> ## Documentation Index > Fetch the complete documentation index at: https://fal.ai/docs/llms.txt > Use this file to discover all available pages before exploring further. > ## Agent Instructions > fal has two developer products. Model APIs run hosted models through an API key. fal Serverless deploys your own Python apps and models on fal GPUs. > To call a hosted model, start with the [Quick Start](https://fal.ai/docs/documentation/quickstart.md) and the [Model APIs overview](https://fal.ai/docs/documentation/model-apis/overview.md). > To deploy your own model with fal Serverless, start with these pages: > - [Introduction to Serverless](https://fal.ai/docs/documentation/serverless/index.md): What fal Serverless is and the three ways to deploy on it. > - [Installation & Setup](https://fal.ai/docs/documentation/development/getting-started/installation.md): Install the fal CLI with `pip install fal` and authenticate. > - [Quick Start](https://fal.ai/docs/documentation/development/getting-started/quick-start.md): Build a Hello World app, test it with `fal run`, and ship it with `fal deploy`. > - [App Lifecycle](https://fal.ai/docs/documentation/development/app-lifecycle.md): How a `fal.App` goes from code to running runners. > - [Define Your Endpoints](https://fal.ai/docs/documentation/development/endpoints-overview.md): Structure the API endpoints that your app exposes. > - [Deploy to Production](https://fal.ai/docs/documentation/deployment/deploy-to-production.md): Persistent URLs, authentication modes, and automatic scaling. > - [Machine Types](https://fal.ai/docs/documentation/deployment/machine-types.md): Available GPU and CPU machine types and how to choose one. > - [Pricing](https://fal.ai/docs/documentation/serverless/pricing.md): Per-second billing and the runner states that are billed. > - [Scaling Parameter Reference](https://fal.ai/docs/documentation/deployment/scale-your-application.md): Parameters that control runners, concurrency, and scale to zero. > - [Optimizing Cold Starts](https://fal.ai/docs/documentation/serverless/optimizations/optimize-cold-starts.md): Causes of cold starts and ways to make them shorter. > - [Examples](https://fal.ai/docs/examples/index.md): Complete Serverless apps for image, video, audio, 3D, realtime, and multi-GPU workloads. > - [Migrating to fal](https://fal.ai/docs/documentation/development/migrating-to-fal.md): Guides to move an existing Docker server or an app from another platform to fal. > fal Serverless deploys need access that the fal team approves for each account. Request access at https://fal.ai/dashboard/serverless-get-started. # Revoke API Key > Revokes an API key by its ID, so it can no longer be used. This action is irreversible. The key stops working immediately and drops out of `GET /v1/keys`, but the record is retained with when it was revoked and by whom. **Requirements:** - Key must belong to the authenticated user's workspace **Key Features:** - Permanently revoke API key access while retaining the audit record - Idempotent operation (safe to retry) - Optional Idempotency-Key header for safe retries **Important:** - This action cannot be undone - Any applications using this key will immediately lose access - Returns 204 even if the key doesn't exist or is already revoked **Common Use Cases:** - Revoke compromised keys - Clean up unused keys - Implement key rotation (revoke old, create new) - Offboard team members **Required permissions:** `auth:keys:write`. Key presets that include them: `FULL`. See [key permissions](https://fal.ai/docs/documentation/model-apis/authentication/key-based#permissions). ## OpenAPI ````yaml /api-reference/platform-apis/openapi/v1.json post /keys/{key_id}/revoke openapi: 3.1.0 info: title: Platform APIs version: v1 description: fal REST API for programmatic access to platform resources. servers: - url: https://api.fal.ai/v1 description: Production server security: [] paths: /keys/{key_id}/revoke: post: tags: - Keys summary: Revoke API Key description: >- Revokes an API key by its ID, so it can no longer be used. This action is irreversible. The key stops working immediately and drops out of `GET /v1/keys`, but the record is retained with when it was revoked and by whom. **Requirements:** - Key must belong to the authenticated user's workspace **Key Features:** - Permanently revoke API key access while retaining the audit record - Idempotent operation (safe to retry) - Optional Idempotency-Key header for safe retries **Important:** - This action cannot be undone - Any applications using this key will immediately lose access - Returns 204 even if the key doesn't exist or is already revoked **Common Use Cases:** - Revoke compromised keys - Clean up unused keys - Implement key rotation (revoke old, create new) - Offboard team members **Required permissions:** `auth:keys:write`. Key presets that include them: `FULL`. See [key permissions](https://fal.ai/docs/documentation/model-apis/authentication/key-based#permissions). operationId: revokeApiKey parameters: - schema: type: string minLength: 1 description: Unique identifier of the API key to revoke example: abc123def456 required: true description: Unique identifier of the API key to revoke name: key_id in: path - schema: type: string description: Optional idempotency key for safe request retries example: 550e8400-e29b-41d4-a716-446655440000 required: false description: Optional idempotency key for safe request retries name: Idempotency-Key in: header responses: '204': description: API key revoked successfully (or already revoked) '401': description: Authentication required content: application/json: schema: type: object properties: error: type: object properties: type: type: string enum: - authorization_error - validation_error - not_found - rate_limited - server_error - not_implemented description: The category of error that occurred message: type: string description: Human-readable error message docs_url: type: string format: uri description: Link to relevant documentation request_id: type: string description: Unique request identifier for debugging required: - type - message description: Error details required: - error description: Standard error response format example: error: type: authorization_error message: Authentication required '403': description: Access denied content: application/json: schema: type: object properties: error: type: object properties: type: type: string enum: - authorization_error - validation_error - not_found - rate_limited - server_error - not_implemented description: The category of error that occurred message: type: string description: Human-readable error message docs_url: type: string format: uri description: Link to relevant documentation request_id: type: string description: Unique request identifier for debugging required: - type - message description: Error details required: - error description: Standard error response format example: error: type: authorization_error message: Access denied '429': description: Rate limit exceeded content: application/json: schema: type: object properties: error: type: object properties: type: type: string enum: - authorization_error - validation_error - not_found - rate_limited - server_error - not_implemented description: The category of error that occurred message: type: string description: Human-readable error message docs_url: type: string format: uri description: Link to relevant documentation request_id: type: string description: Unique request identifier for debugging required: - type - message description: Error details required: - error description: Standard error response format example: error: type: rate_limited message: Rate limit exceeded '500': description: Internal server error content: application/json: schema: type: object properties: error: type: object properties: type: type: string enum: - authorization_error - validation_error - not_found - rate_limited - server_error - not_implemented description: The category of error that occurred message: type: string description: Human-readable error message docs_url: type: string format: uri description: Link to relevant documentation request_id: type: string description: Unique request identifier for debugging required: - type - message description: Error details required: - error description: Standard error response format example: error: type: server_error message: An unexpected error occurred security: - fullApiKey: [] components: securitySchemes: fullApiKey: type: apiKey in: header name: Authorization description: >- Key on the `FULL` preset, or any key whose permissions include the ones this API lists. Prefix it with "Key ", e.g. Authorization: Key YOUR_API_KEY ````