> ## Documentation Index
> Fetch the complete documentation index at: https://docs.stackone.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Fastbill

> 57 actions available for Fastbill through StackOne. Use via Actions RPC, Toolset SDK, MCP, or A2A.

<div className="not-prose" style={{ display: 'flex', alignItems: 'center', gap: '12px', marginBottom: '24px' }}>
  <img src="https://stackone-logos.com/api/fastbill/filled/png" alt="Fastbill" className="connector-page-icon" style={{ width: '48px', height: '48px', borderRadius: '10px', padding: '2px' }} />

  <div>
    <div style={{ fontSize: '24px', fontWeight: '600' }}>Fastbill</div>
    <div className="connector-page-subtitle" style={{ fontSize: '14px' }}>57 actions · 1 auth method</div>

    <div style={{ display: 'flex', flexWrap: 'wrap', gap: '6px', marginTop: '8px' }}>
      <span className="connector-page-tag-preview" style={{ display: 'inline-block', padding: '2px 8px', borderRadius: '4px', fontSize: '11px', fontWeight: '500' }}>Preview</span>
      <span className="connector-page-category-tag" style={{ display: 'inline-block', padding: '2px 8px', borderRadius: '4px', fontSize: '11px', fontWeight: '500' }}>Accounting</span>
    </div>
  </div>
</div>

## Authentication

<Columns cols={2}>
  <Card title="API Key">
    Authenticate using your Fastbill email address and API key.

    Guides: [Connector Profile](/connectors/fastbill/guides/connector-profile/api-key), [Link Account](/connectors/fastbill/guides/link-account/api-key)
  </Card>
</Columns>

<div className="connector-meta-library-section">
  <div className="connector-meta-library-title">Actions</div>

  <div className="connector-actions-controls not-prose" data-connector-actions-controls>
    <div className="connector-actions-controls__row">
      <input type="search" className="connector-actions-search" data-connector-actions-search placeholder="Search actions" aria-label="Search actions" />
    </div>
  </div>

  <div className="meta-library-count" data-connector-actions-count>57 actions</div>

  <div className="not-prose meta-library-table-container" data-connector-actions-table>
    <div className="connector-meta-library-grid" style={{ gridTemplateColumns: '200px 1fr' }}>
      <div className="connector-meta-library-row">
        <div className="meta-library-grid-header-cell">Action</div>
        <div className="meta-library-grid-header-cell">Description</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="fastbill_list_customers" data-action-label="List Customers" data-action-scopes="">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>List Customers</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="fastbill_list_customers" aria-label="Copy fastbill_list_customers"><code className="connector-page-code">fastbill\_list\_customers</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Retrieve a list of customers from Fastbill with optional filtering.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="fastbill_get_customer" data-action-label="Get Customer" data-action-scopes="">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>Get Customer</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="fastbill_get_customer" aria-label="Copy fastbill_get_customer"><code className="connector-page-code">fastbill\_get\_customer</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Retrieve a specific customer by ID from Fastbill.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="fastbill_create_customer" data-action-label="Create Customer" data-action-scopes="">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>Create Customer</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="fastbill_create_customer" aria-label="Copy fastbill_create_customer"><code className="connector-page-code">fastbill\_create\_customer</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Create a new customer in Fastbill.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="fastbill_update_customer" data-action-label="Update Customer" data-action-scopes="">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>Update Customer</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="fastbill_update_customer" aria-label="Copy fastbill_update_customer"><code className="connector-page-code">fastbill\_update\_customer</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Update an existing customer in Fastbill.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="fastbill_delete_customer" data-action-label="Delete Customer" data-action-scopes="">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>Delete Customer</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="fastbill_delete_customer" aria-label="Copy fastbill_delete_customer"><code className="connector-page-code">fastbill\_delete\_customer</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Delete a customer from Fastbill.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="fastbill_list_contacts" data-action-label="List Contacts" data-action-scopes="">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>List Contacts</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="fastbill_list_contacts" aria-label="Copy fastbill_list_contacts"><code className="connector-page-code">fastbill\_list\_contacts</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Retrieve contacts for customers from Fastbill.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="fastbill_create_contact" data-action-label="Create Contact" data-action-scopes="">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>Create Contact</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="fastbill_create_contact" aria-label="Copy fastbill_create_contact"><code className="connector-page-code">fastbill\_create\_contact</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Create a new contact for a customer in Fastbill.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="fastbill_update_contact" data-action-label="Update Contact" data-action-scopes="">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>Update Contact</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="fastbill_update_contact" aria-label="Copy fastbill_update_contact"><code className="connector-page-code">fastbill\_update\_contact</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Update an existing contact in Fastbill.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="fastbill_delete_contact" data-action-label="Delete Contact" data-action-scopes="">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>Delete Contact</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="fastbill_delete_contact" aria-label="Copy fastbill_delete_contact"><code className="connector-page-code">fastbill\_delete\_contact</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Delete a contact from Fastbill.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="fastbill_list_invoices" data-action-label="List Invoices" data-action-scopes="">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>List Invoices</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="fastbill_list_invoices" aria-label="Copy fastbill_list_invoices"><code className="connector-page-code">fastbill\_list\_invoices</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Retrieve a list of invoices from Fastbill with optional filtering.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="fastbill_get_invoice" data-action-label="Get Invoice" data-action-scopes="">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>Get Invoice</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="fastbill_get_invoice" aria-label="Copy fastbill_get_invoice"><code className="connector-page-code">fastbill\_get\_invoice</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Retrieve a specific invoice by ID from Fastbill.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="fastbill_create_invoice" data-action-label="Create Invoice" data-action-scopes="">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>Create Invoice</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="fastbill_create_invoice" aria-label="Copy fastbill_create_invoice"><code className="connector-page-code">fastbill\_create\_invoice</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Create a new invoice draft in Fastbill.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="fastbill_update_invoice" data-action-label="Update Invoice" data-action-scopes="">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>Update Invoice</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="fastbill_update_invoice" aria-label="Copy fastbill_update_invoice"><code className="connector-page-code">fastbill\_update\_invoice</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Update an existing invoice draft in Fastbill.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="fastbill_delete_invoice" data-action-label="Delete Invoice" data-action-scopes="">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>Delete Invoice</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="fastbill_delete_invoice" aria-label="Copy fastbill_delete_invoice"><code className="connector-page-code">fastbill\_delete\_invoice</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Delete an invoice draft from Fastbill.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="fastbill_complete_invoice" data-action-label="Complete Invoice" data-action-scopes="">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>Complete Invoice</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="fastbill_complete_invoice" aria-label="Copy fastbill_complete_invoice"><code className="connector-page-code">fastbill\_complete\_invoice</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Finalize an invoice draft and convert it to a completed invoice.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="fastbill_cancel_invoice" data-action-label="Cancel Invoice" data-action-scopes="">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>Cancel Invoice</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="fastbill_cancel_invoice" aria-label="Copy fastbill_cancel_invoice"><code className="connector-page-code">fastbill\_cancel\_invoice</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Cancel a completed invoice in Fastbill.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="fastbill_lock_invoice" data-action-label="Lock Invoice" data-action-scopes="">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>Lock Invoice</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="fastbill_lock_invoice" aria-label="Copy fastbill_lock_invoice"><code className="connector-page-code">fastbill\_lock\_invoice</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Finalize an invoice in Fastbill.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="fastbill_set_invoice_paid" data-action-label="Set Invoice Paid" data-action-scopes="">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>Set Invoice Paid</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="fastbill_set_invoice_paid" aria-label="Copy fastbill_set_invoice_paid"><code className="connector-page-code">fastbill\_set\_invoice\_paid</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Mark an invoice as paid in Fastbill.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="fastbill_send_invoice_email" data-action-label="Send Invoice By Email" data-action-scopes="">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>Send Invoice By Email</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="fastbill_send_invoice_email" aria-label="Copy fastbill_send_invoice_email"><code className="connector-page-code">fastbill\_send\_invoice\_email</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Send a completed invoice to a recipient via email with PDF attachment.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="fastbill_send_invoice_post" data-action-label="Send Invoice By Post" data-action-scopes="">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>Send Invoice By Post</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="fastbill_send_invoice_post" aria-label="Copy fastbill_send_invoice_post"><code className="connector-page-code">fastbill\_send\_invoice\_post</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Send a completed invoice via postal mail.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="fastbill_list_estimates" data-action-label="List Estimates" data-action-scopes="">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>List Estimates</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="fastbill_list_estimates" aria-label="Copy fastbill_list_estimates"><code className="connector-page-code">fastbill\_list\_estimates</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Retrieve a list of estimates/quotes from Fastbill with optional filtering.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="fastbill_get_estimate" data-action-label="Get Estimate" data-action-scopes="">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>Get Estimate</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="fastbill_get_estimate" aria-label="Copy fastbill_get_estimate"><code className="connector-page-code">fastbill\_get\_estimate</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Retrieve a specific estimate by ID from Fastbill.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="fastbill_create_estimate" data-action-label="Create Estimate" data-action-scopes="">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>Create Estimate</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="fastbill_create_estimate" aria-label="Copy fastbill_create_estimate"><code className="connector-page-code">fastbill\_create\_estimate</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Create a new estimate/quote in Fastbill.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="fastbill_delete_estimate" data-action-label="Delete Estimate" data-action-scopes="">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>Delete Estimate</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="fastbill_delete_estimate" aria-label="Copy fastbill_delete_estimate"><code className="connector-page-code">fastbill\_delete\_estimate</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Delete an estimate from Fastbill.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="fastbill_send_estimate_email" data-action-label="Send Estimate By Email" data-action-scopes="">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>Send Estimate By Email</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="fastbill_send_estimate_email" aria-label="Copy fastbill_send_estimate_email"><code className="connector-page-code">fastbill\_send\_estimate\_email</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Send an estimate to a recipient via email with PDF attachment.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="fastbill_convert_estimate_to_invoice" data-action-label="Convert Estimate To Invoice" data-action-scopes="">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>Convert Estimate To Invoice</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="fastbill_convert_estimate_to_invoice" aria-label="Copy fastbill_convert_estimate_to_invoice"><code className="connector-page-code">fastbill\_convert\_estimate\_to\_invoice</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Convert an existing estimate into an invoice.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="fastbill_list_recurring_invoices" data-action-label="List Recurring Invoices" data-action-scopes="">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>List Recurring Invoices</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="fastbill_list_recurring_invoices" aria-label="Copy fastbill_list_recurring_invoices"><code className="connector-page-code">fastbill\_list\_recurring\_invoices</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Retrieve a list of recurring invoices from Fastbill.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="fastbill_get_recurring_invoice" data-action-label="Get Recurring Invoice" data-action-scopes="">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>Get Recurring Invoice</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="fastbill_get_recurring_invoice" aria-label="Copy fastbill_get_recurring_invoice"><code className="connector-page-code">fastbill\_get\_recurring\_invoice</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Retrieve a specific recurring invoice by ID from Fastbill.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="fastbill_create_recurring_invoice" data-action-label="Create Recurring Invoice" data-action-scopes="">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>Create Recurring Invoice</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="fastbill_create_recurring_invoice" aria-label="Copy fastbill_create_recurring_invoice"><code className="connector-page-code">fastbill\_create\_recurring\_invoice</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Create a new recurring invoice in Fastbill.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="fastbill_update_recurring_invoice" data-action-label="Update Recurring Invoice" data-action-scopes="">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>Update Recurring Invoice</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="fastbill_update_recurring_invoice" aria-label="Copy fastbill_update_recurring_invoice"><code className="connector-page-code">fastbill\_update\_recurring\_invoice</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Update an existing recurring invoice in Fastbill.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="fastbill_delete_recurring_invoice" data-action-label="Delete Recurring Invoice" data-action-scopes="">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>Delete Recurring Invoice</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="fastbill_delete_recurring_invoice" aria-label="Copy fastbill_delete_recurring_invoice"><code className="connector-page-code">fastbill\_delete\_recurring\_invoice</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Delete a recurring invoice from Fastbill.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="fastbill_list_revenues" data-action-label="List Revenues" data-action-scopes="">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>List Revenues</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="fastbill_list_revenues" aria-label="Copy fastbill_list_revenues"><code className="connector-page-code">fastbill\_list\_revenues</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Retrieve a list of revenue entries from Fastbill with optional filtering.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="fastbill_get_revenue" data-action-label="Get Revenue" data-action-scopes="">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>Get Revenue</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="fastbill_get_revenue" aria-label="Copy fastbill_get_revenue"><code className="connector-page-code">fastbill\_get\_revenue</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Retrieve a specific revenue entry by ID from Fastbill.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="fastbill_create_revenue" data-action-label="Create Revenue" data-action-scopes="">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>Create Revenue</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="fastbill_create_revenue" aria-label="Copy fastbill_create_revenue"><code className="connector-page-code">fastbill\_create\_revenue</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Create a new revenue entry in Fastbill.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="fastbill_set_revenue_paid" data-action-label="Set Revenue Paid" data-action-scopes="">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>Set Revenue Paid</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="fastbill_set_revenue_paid" aria-label="Copy fastbill_set_revenue_paid"><code className="connector-page-code">fastbill\_set\_revenue\_paid</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Mark a revenue entry as paid in Fastbill.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="fastbill_delete_revenue" data-action-label="Delete Revenue" data-action-scopes="">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>Delete Revenue</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="fastbill_delete_revenue" aria-label="Copy fastbill_delete_revenue"><code className="connector-page-code">fastbill\_delete\_revenue</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Delete a revenue entry from Fastbill.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="fastbill_list_expenses" data-action-label="List Expenses" data-action-scopes="">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>List Expenses</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="fastbill_list_expenses" aria-label="Copy fastbill_list_expenses"><code className="connector-page-code">fastbill\_list\_expenses</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Retrieve a list of expense entries from Fastbill with optional filtering.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="fastbill_get_expense" data-action-label="Get Expense" data-action-scopes="">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>Get Expense</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="fastbill_get_expense" aria-label="Copy fastbill_get_expense"><code className="connector-page-code">fastbill\_get\_expense</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Retrieve a specific expense entry by ID from Fastbill.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="fastbill_create_expense" data-action-label="Create Expense" data-action-scopes="">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>Create Expense</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="fastbill_create_expense" aria-label="Copy fastbill_create_expense"><code className="connector-page-code">fastbill\_create\_expense</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Create a new expense entry in Fastbill.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="fastbill_list_articles" data-action-label="List Articles" data-action-scopes="">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>List Articles</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="fastbill_list_articles" aria-label="Copy fastbill_list_articles"><code className="connector-page-code">fastbill\_list\_articles</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Retrieve a list of products/articles from Fastbill.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="fastbill_get_article" data-action-label="Get Article" data-action-scopes="">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>Get Article</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="fastbill_get_article" aria-label="Copy fastbill_get_article"><code className="connector-page-code">fastbill\_get\_article</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Retrieve a specific product/article by ID from Fastbill.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="fastbill_create_article" data-action-label="Create Article" data-action-scopes="">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>Create Article</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="fastbill_create_article" aria-label="Copy fastbill_create_article"><code className="connector-page-code">fastbill\_create\_article</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Create a new product/article in Fastbill.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="fastbill_update_article" data-action-label="Update Article" data-action-scopes="">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>Update Article</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="fastbill_update_article" aria-label="Copy fastbill_update_article"><code className="connector-page-code">fastbill\_update\_article</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Update an existing product/article in Fastbill.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="fastbill_delete_article" data-action-label="Delete Article" data-action-scopes="">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>Delete Article</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="fastbill_delete_article" aria-label="Copy fastbill_delete_article"><code className="connector-page-code">fastbill\_delete\_article</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Delete a product/article from Fastbill.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="fastbill_list_projects" data-action-label="List Projects" data-action-scopes="">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>List Projects</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="fastbill_list_projects" aria-label="Copy fastbill_list_projects"><code className="connector-page-code">fastbill\_list\_projects</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Retrieve a list of projects from Fastbill with optional filtering.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="fastbill_get_project" data-action-label="Get Project" data-action-scopes="">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>Get Project</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="fastbill_get_project" aria-label="Copy fastbill_get_project"><code className="connector-page-code">fastbill\_get\_project</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Retrieve a specific project by ID from Fastbill.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="fastbill_create_project" data-action-label="Create Project" data-action-scopes="">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>Create Project</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="fastbill_create_project" aria-label="Copy fastbill_create_project"><code className="connector-page-code">fastbill\_create\_project</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Create a new project in Fastbill.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="fastbill_update_project" data-action-label="Update Project" data-action-scopes="">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>Update Project</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="fastbill_update_project" aria-label="Copy fastbill_update_project"><code className="connector-page-code">fastbill\_update\_project</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Update an existing project in Fastbill.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="fastbill_delete_project" data-action-label="Delete Project" data-action-scopes="">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>Delete Project</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="fastbill_delete_project" aria-label="Copy fastbill_delete_project"><code className="connector-page-code">fastbill\_delete\_project</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Delete a project from Fastbill.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="fastbill_list_time_entries" data-action-label="List Time Entries" data-action-scopes="">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>List Time Entries</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="fastbill_list_time_entries" aria-label="Copy fastbill_list_time_entries"><code className="connector-page-code">fastbill\_list\_time\_entries</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Retrieve a list of time tracking entries from Fastbill with optional filtering.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="fastbill_get_time_entry" data-action-label="Get Time Entry" data-action-scopes="">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>Get Time Entry</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="fastbill_get_time_entry" aria-label="Copy fastbill_get_time_entry"><code className="connector-page-code">fastbill\_get\_time\_entry</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Retrieve a specific time entry by ID from Fastbill.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="fastbill_create_time_entry" data-action-label="Create Time Entry" data-action-scopes="">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>Create Time Entry</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="fastbill_create_time_entry" aria-label="Copy fastbill_create_time_entry"><code className="connector-page-code">fastbill\_create\_time\_entry</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Create a new time tracking entry in Fastbill.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="fastbill_update_time_entry" data-action-label="Update Time Entry" data-action-scopes="">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>Update Time Entry</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="fastbill_update_time_entry" aria-label="Copy fastbill_update_time_entry"><code className="connector-page-code">fastbill\_update\_time\_entry</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Update an existing time entry in Fastbill.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="fastbill_delete_time_entry" data-action-label="Delete Time Entry" data-action-scopes="">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>Delete Time Entry</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="fastbill_delete_time_entry" aria-label="Copy fastbill_delete_time_entry"><code className="connector-page-code">fastbill\_delete\_time\_entry</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Delete a time entry from Fastbill.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="fastbill_list_templates" data-action-label="List Templates" data-action-scopes="">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>List Templates</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="fastbill_list_templates" aria-label="Copy fastbill_list_templates"><code className="connector-page-code">fastbill\_list\_templates</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Retrieve a list of invoice/estimate templates from Fastbill.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="fastbill_list_documents" data-action-label="List Documents" data-action-scopes="">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>List Documents</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="fastbill_list_documents" aria-label="Copy fastbill_list_documents"><code className="connector-page-code">fastbill\_list\_documents</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Retrieve a list of documents and folders from Fastbill.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="fastbill_create_document" data-action-label="Create Document" data-action-scopes="">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>Create Document</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="fastbill_create_document" aria-label="Copy fastbill_create_document"><code className="connector-page-code">fastbill\_create\_document</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Create a document entry in the Fastbill inbox.</div>
      </div>
    </div>
  </div>
</div>

## Getting Started

<Steps>
  <Step title="Create or Select a Project">
    Set up a new project or select an existing one. See the [Projects Guide](/guides/managing-projects).
  </Step>

  <Step title="Configure the Connector">
    Enable the connector and set up a connector profile in your project. See [Managing Connectors](/guides/explore-connectors).

    <Columns cols={2}>
      <Card title="Connector Profile" href="/connectors/fastbill/guides/connector-profile/api-key" icon="https://stackone-logos.com/api/fastbill/filled/png" horizontal>
        Fastbill - API Key
      </Card>
    </Columns>
  </Step>

  <Step title="Link an Account">
    Connect an account using [StackOne Hub](/guides/embedding-stackone-hub) or [Auth Link](/guides/auth-link).

    <Columns cols={2}>
      <Card title="Link Account" href="/connectors/fastbill/guides/link-account/api-key" icon="https://stackone-logos.com/api/fastbill/filled/png" horizontal>
        Fastbill - API Key
      </Card>
    </Columns>
  </Step>

  <Step title="Use Actions">
    Invoke actions using one of the methods below:

    * [MCP](/mcp/quickstart) – Model Context Protocol for AI assistants
    * [A2A](/a2a/quickstart) – Agent-to-Agent protocol
    * [AI Toolset (TypeScript)](/agents/typescript/introduction) – TypeScript SDK for AI agents
    * [AI Toolset (Python)](/agents/python/introduction) – Python SDK for AI agents
    * [Actions RPC](/platform/api-reference/actions/make-an-rpc-call-to-an-action) – Direct API calls
    * [Playground](/guides/playground) – Test actions in the dashboard
  </Step>
</Steps>
