Paragon ActionKit API

openapi: 3.2.0
info:
  title: Paragon Action Kit API
  description: 'Unofficial, community-authored OpenAPI description of Paragon''s embedded integration platform APIs, compiled by API Evangelist from Paragon''s public documentation. Paragon exposes several distinct API surfaces across different hosts: the Connect API (zeus.useparagon.com) for managing authenticated users, connected credentials, integrations, workflow triggers, and proxied third-party requests; ActionKit (actionkit.useparagon.com) for listing and running prebuilt LLM-ready actions; and Managed Sync (sync.useparagon.com / managed-sync.useparagon.com) for normalized third-party data ingestion and permission checks.

    Nearly all requests are authenticated with a Paragon User Token, an RS256-signed JWT that your application signs with the private signing key from the Paragon dashboard (Settings > SDK Setup) and that Paragon verifies with the matching public key. In production most developers use Paragon''s Connect SDK and Connect Portal, which sit in front of this API; the raw HTTP surface documented here is used for server-side and headless integrations.

    Endpoint paths and payloads are approximate representations of Paragon''s documented behavior and should be verified against the official docs.'
  version: '1.0'
  contact:
    name: Paragon Support
    url: https://docs.useparagon.com/
  termsOfService: https://www.useparagon.com/legal/terms-of-service
servers:
- url: https://zeus.useparagon.com
  description: Connect API (users, credentials, integrations, workflow triggers, proxy)
- url: https://actionkit.useparagon.com
  description: ActionKit API (list and run prebuilt actions)
- url: https://proxy.useparagon.com
  description: Proxy API (alternate host for passthrough third-party requests)
- url: https://sync.useparagon.com
  description: Managed Sync API (data ingestion pipelines)
- url: https://managed-sync.useparagon.com
  description: Managed Sync records and Permissions API
security:
- ParagonUserToken: []
tags:
- name: ActionKit
  description: Prebuilt, LLM-ready actions across connected SaaS providers.
paths:
  /projects/{projectId}/actions:
    get:
      operationId: listActions
      tags:
      - ActionKit
      summary: List available ActionKit actions
      description: Returns the catalog of prebuilt, LLM-ready actions available to the authenticated user across their connected integrations. The response is designed to be handed to an AI agent as tool definitions.
      servers:
      - url: https://actionkit.useparagon.com
      parameters:
      - $ref: '#/components/parameters/ProjectId'
      - name: categories
        in: query
        required: false
        description: Optional filter limiting the actions returned by category or provider.
        schema:
          type: string
      responses:
        '200':
          description: The list of available actions and their JSON schemas.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ActionList'
        '401':
          $ref: '#/components/responses/Unauthorized'
  /projects/{projectId}/actions/run:
    post:
      operationId: runAction
      tags:
      - ActionKit
      summary: Run an ActionKit action
      description: Executes a single prebuilt action for the authenticated user by name (for example, `SLACK_SEND_MESSAGE`) with the action-specific parameters. Paragon returns the API response of the last underlying request used to run the action; the response shape varies by provider.
      servers:
      - url: https://actionkit.useparagon.com
      parameters:
      - $ref: '#/components/parameters/ProjectId'
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/RunActionRequest'
      responses:
        '200':
          description: The result of running the action.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/RunActionResponse'
        '400':
          description: Invalid action name or parameters.
        '401':
          $ref: '#/components/responses/Unauthorized'
components:
  responses:
    Unauthorized:
      description: Missing or invalid Paragon User Token.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
  schemas:
    RunActionRequest:
      type: object
      required:
      - action
      - parameters
      properties:
        action:
          type: string
          example: SLACK_SEND_MESSAGE
        parameters:
          type: object
          additionalProperties: true
          example:
            channel: C0123456789
            text: Hello from ActionKit
    ActionList:
      type: object
      properties:
        actions:
          type: array
          items:
            $ref: '#/components/schemas/Action'
    Error:
      type: object
      properties:
        message:
          type: string
        code:
          type: string
    RunActionResponse:
      type: object
      description: The provider API response of the last request used to run the action.
      additionalProperties: true
    Action:
      type: object
      properties:
        name:
          type: string
          example: SLACK_SEND_MESSAGE
        description:
          type: string
        provider:
          type: string
          example: slack
        parameters:
          type: object
          description: JSON Schema for the action's parameters.
          additionalProperties: true
  parameters:
    ProjectId:
      name: projectId
      in: path
      required: true
      description: The Paragon project identifier.
      schema:
        type: string
  securitySchemes:
    ParagonUserToken:
      type: http
      scheme: bearer
      bearerFormat: JWT
      description: 'A Paragon User Token: an RS256-signed JWT whose subject identifies the end user. Sign it with the private signing key from Settings > SDK Setup in the Paragon dashboard; Paragon verifies it with the matching public key.'