Beeceptor
Service for creating mock REST APIs, intercepting requests, and testing webhooks.
Open the official app on beeceptor.com
This tool is hosted by its maintainers. Click below to open beeceptor.com in a new tab — it's their official demo.
Browse developer tools →What's next with Beeceptor?
Choose how you want to get started.
Use it free
Open the official tool or demo — no account needed.
Self-host it
Run the open-source version on your own infrastructure.
What is Beeceptor?
Beeceptor is a developer-focused API simulation platform designed to create mock servers for testing, development, and demonstration purposes. It enables teams to simulate REST, SOAP, GraphQL, gRPC, and other API types without relying on backend infrastructure, addressing the challenge of integrating systems before full implementation. Developers, QA engineers, and DevOps teams use Beeceptor to streamline workflows by eliminating guesswork in API behavior and accelerating integration testing. The tool solves problems such as dependency on real services during development, ensuring consistent environments for testing and demos. By generating realistic mock data and supporting stateful interactions, Beeceptor reduces delays caused by waiting for backend components, making it ideal for agile workflows and continuous integration pipelines.
How it works
Beeceptor is a behavioral API simulator that allows users to create mock servers for testing, prototyping, and demonstration. It abstracts the complexity of backend systems by generating realistic API responses based on specifications or rules. The tool is primarily used by developers and QA teams to simulate API endpoints, enabling testing of frontends, integrations, and workflows without requiring live backend services. It supports scenarios where backend systems are not yet available or where controlled failure simulations are needed. Beeceptor supports mock servers for REST, SOAP, GraphQL, and gRPC, with AI-powered generation of realistic test data. Users can upload OpenAPI/Swagger specs to automatically generate full mock servers with dynamic responses. Stateful interactions like CRUD operations and counters are supported through customizable rules.
How to use it
- 1Sign in via Google, GitHub, Microsoft, or password to access the dashboard. 2. Upload an OpenAPI/Swagger specification to auto-generate a mock server with AI-generated data. 3. Customize response rules using the UI to define behavior based on request parameters. 4. Test the mock server through its endpoints or integrate it into CI/CD pipelines via APIs. Practical tips include using the request inspection tool to debug payloads and headers, leveraging dynamic responses for context-aware simulations, and utilizing proxy features to route traffic to real services during development.
What it can do
- API mocking
Use cases
Assumptions and limitations
Assumptions
- source: https://beeceptor.com/
- license: Proprietary — free to use
- privacy: Opens an external demo
Limitations
- Requires internet connectivity for cloud-based operation
- Limited advanced customization for complex business logic
- No built-in support for real-time collaboration features
- Proprietary license may restrict enterprise deployment flexibility
- Dependent on OpenAPI/Swagger specs for automated mock generation
Understanding the result
Service for creating mock REST APIs, intercepting requests, and testing webhooks.
Tool details
- Clearly flagged when a network request is needed.
- No account, no sign-up, and no tracking of your content.
- Powered by (MIT).
- Built with
- (https://beeceptor.com/)
- License
- MIT
- Runs locally
- No — requires a network request
- Verification
- Not yet verified
- Input
- Query
- Output
- Text
Built with https://beeceptor.com/. OpenToolVault provides the discovery and browser interface while crediting the original project maintainers.
- Built with
- License
- MIT
Open-source project
OpenToolVault is an independent directory. We are not affiliated with or endorsed by this project.
References
- / — GitHub Repository
Upstream project · GitHub
- Proprietary License
Upstream project
Frequently asked
What is Beeceptor and how does it differ from traditional API mocking tools?
Beeceptor is a cloud-based API simulation platform that automates mock server creation using OpenAPI specs or AI-generated rules. Unlike traditional tools that require manual configuration, Beeceptor offers no-code setup and dynamic response generation. It also integrates proxying and stateful behavior, making it suitable for both development and testing phases.
How does Beeceptor handle stateful interactions like counters or lists?
Beeceptor allows users to define stateful behavior through customizable rules. For example, a counter endpoint can be configured to increment values across requests by storing session-specific data. These rules are applied per request, enabling simulations of CRUD operations and other state-dependent APIs.
How do I set up a mock server for a GraphQL API?
Upload your GraphQL schema to Beeceptor's OpenAPI importer, which automatically generates a mock server. Customize response rules to define how queries and mutations should behave. Use the UI to set up dynamic data generation and test the endpoint through Beeceptor's mock interface.
How does Beeceptor compare to alternatives like WireMock or Mountebank?
Beeceptor differs by offering AI-powered mock generation and no-code setup, whereas WireMock and Mountebank require manual configuration. Beeceptor's integration with OpenAPI specs and proxying features provides faster setup for API simulation, while alternatives like Postman's Mock Server offer more granular control over request/response mappings.
What should I do if I encounter authentication errors when accessing Beeceptor?
Verify your credentials match the selected authentication method (e.g., SAML, OAuth). Check for expired tokens if using SSO. If issues persist, clear browser cookies or contact support with your account details. Ensure your internet connection is stable and firewall settings allow access to Beeceptor's endpoints.