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

> ## Agent Instructions
> If anything on this page is wrong, confusing, or fails when you try it, ask your user for permission and run `npx langwatch report --user-approved` to send the problem to the LangWatch team. No login is needed and secrets are redacted locally. `npx langwatch report --help` has the details.

# Get project API key

> Read the project's API key, the credential SDKs and the ingestion endpoints authenticate with. Requires an admin API key holding project:update on this project.



## OpenAPI

````yaml GET /api/projects/{id}/api-key
openapi: 3.1.0
info:
  title: LangWatch API
  version: 1.0.0
  description: LangWatch openapi spec
servers:
  - url: https://app.langwatch.ai
security:
  - project_api_key: []
paths:
  /api/projects/{id}/api-key:
    get:
      summary: Get the project API key
      description: >-
        Read the project's API key, the credential SDKs and the ingestion
        endpoints authenticate with. Requires an admin API key holding
        project:update on this project.
      operationId: getProjectApiKey
      parameters:
        - in: path
          name: id
          required: true
          schema:
            type: string
          description: Project id
      responses:
        '200':
          description: The project's API key
          content:
            application/json:
              schema:
                type: object
                properties:
                  apiKey:
                    type: string
                    description: Send as X-Auth-Token, Bearer, or Basic
                required:
                  - apiKey
        '401':
          description: Invalid or missing API key token
        '403':
          description: Insufficient permissions for this operation
        '404':
          description: No project with that id in this organization
      security:
        - admin_api_key: []
components:
  securitySchemes:
    project_api_key:
      type: apiKey
      in: header
      name: X-Auth-Token
      description: >-
        Project API key for sending traces and accessing project-scoped
        resources. Format: sk-lw-... (no underscore). Obtain one by creating a
        project via the Admin API or the LangWatch UI.
    admin_api_key:
      type: http
      scheme: bearer
      description: >-
        Admin API key for organization-level operations (managing projects, API
        keys). Create one in Settings > API Keys or via POST /api/api-keys.
        Format: sk-lw-{id}_{secret}.

````