httpbin.org
✓ Official Vendor SpecDeveloper ToolsTesting Qanone73 EndpointsREST
For Agents
Exercise and verify HTTP client behaviour against 73 well-known test endpoints covering methods, status codes, auth, cookies, redirects, and encodings.
Use for: I need to test how my HTTP client handles a 500 error, Verify that my agent retries on a 429 response, Echo a POST request body back to confirm headers were sent correctly, Check whether my client decompresses gzip responses
Not supported: Does not host real applications, persist data between requests, or handle production traffic - use for HTTP client and middleware testing only.
httpbin.org is a free, public HTTP request and response service used to test, debug, and demonstrate HTTP clients, proxies, and middleware. Endpoints echo request data, simulate status codes, exercise common authentication schemes, set and read cookies, return delays and streaming responses, and serve common encodings such as gzip, deflate, brotli, and base64. It is the standard reference target for verifying HTTP behaviour in CI pipelines, agent tool tests, and SDK integration suites.
Install Jentic One Beta
Connect the httpbin.org to your agent
Jentic One is a self-hosted execution layer for AI agents. It lets your agent call the httpbin.org, or any other public or private API you need. You set the rules, the agent never sees your credentials, and every call is logged.
Two steps, two machines. Install the instance in a safe environment, then register your agent from wherever it runs.
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Step 1: Jentic One Host machine
# On the machine that will host your Jentic One instance:
curl -fsSL "https://jentic.com/install.sh?src=apis&api=%2Fapis%2Fhttpbin.org%2Fhttpbin" | sh2
Step 2: Agent machine
# On the machine where your agent runs (keep this separate from the instance):
curl -fsSL "https://jentic.com/install.sh?src=apis&api=%2Fapis%2Fhttpbin.org%2Fhttpbin" | sh
jentic register # connects your agent to your Jentic One instanceJentic One is in public beta. The setup above keeps your agent separate from the instance, which is what you want before using real credentials: an agent running as the same OS user as Jentic One can read its stored keys directly. Just evaluating? A single local install is fine to start. See the secure deployment guide for the tiers.
Capabilities
What an agent can do with httpbin.org API.
Echo back request method, headers, query string, and body via /get, /post, /put, /patch, /delete, and /anything
Return any HTTP status code on demand to test client error handling and retries
Exercise basic, bearer, digest, and hidden basic-auth flows for client credential testing
Set, read, and delete cookies through the /cookies family of endpoints
Stream delayed and chunked responses to test client timeouts and back-pressure handling
Serve gzip, deflate, brotli, and base64 encoded payloads to verify decompression in clients
Use Cases
Patterns agents use httpbin.org API for, with concrete tasks.
★ HTTP Client Conformance Testing
Verify that an HTTP client library or SDK correctly handles methods, headers, query parameters, status codes, and bodies by directing tests at httpbin endpoints. /anything echoes the full request shape, while /status/{codes} returns arbitrary status codes for error-path coverage. The service is free, public, and stable enough for CI use.
Send a POST to /anything with a JSON body and assert the response echoes the same headers and body fields.
Retry and Timeout Logic Validation
Validate retry policies and timeout behaviour by hitting /status/{codes} with codes like 500, 502, and 429, or /delay/{delay} to simulate slow responses. This produces deterministic, reproducible failure modes so retry middleware can be tuned with confidence.
GET /delay/5 with a 2-second client timeout and confirm the client raises a timeout error.
Authentication Scheme Demos
Demonstrate and test how a client handles HTTP basic, bearer, and digest authentication. /basic-auth/{user}/{passwd} and /bearer return 401 unless valid credentials are supplied, making them ideal targets for credential-handling tests in agent frameworks.
GET /basic-auth/user/pass with the matching credentials and confirm a 200 response with the authenticated payload.
Agent Tool Smoke Tests via Jentic
When validating that a Jentic-mediated tool call actually reaches the target server, point the agent at httpbin and inspect the echoed request. This isolates network and tool-execution issues from real-API behaviour during agent development.
Search Jentic for echo an http request, load /anything on httpbin, and execute with custom headers to confirm the agent sent them correctly.
Key Endpoints
73 endpoints — httpbin.
METHOD
PATH
DESCRIPTION
GET
/get
Echo the GET request including headers and query
POST
/anything
Echo any HTTP request method and body
GET
/status/{codes}
Return the requested HTTP status code
GET
/delay/{delay}
Delay the response by N seconds
GET
/basic-auth/{user}/{passwd}
Challenge with HTTP basic auth
GET
/cookies
Return current request cookies
GET
/gzip
Return a gzip-encoded response
GET
/get
Echo the GET request including headers and query
POST
/anything
Echo any HTTP request method and body
GET
/status/{codes}
Return the requested HTTP status code
GET
/delay/{delay}
Delay the response by N seconds
GET
/basic-auth/{user}/{passwd}
Challenge with HTTP basic auth
GET
/cookies
Return current request cookies
GET
/gzip
Return a gzip-encoded response
Why Jentic?
What agents get from Jentic-routed access to this vendor.
Setup
Wiring httpbin by hand means standing up a client against its httpbin.org host and handling each test endpoint yourself. Through Jentic you install once, import httpbin.org from the API Directory, and your agent calls it, with no credential to configure since the service is unauthenticated.
Permission scoping
httpbin exposes stateless test endpoints, so scope your agent to the operations it needs, such as echoing a request or returning a given status code. You choose which calls are in the allowed set, so anything beyond the test endpoints you pick is excluded.
Credential isolation
httpbin.org is unauthenticated, so your Jentic One instance injects no credential at execution time and none enters the agent's prompt, logs, or context.
Intent-based discovery
Agents search Jentic by intent such as 'echo an HTTP request' or 'test a 500 error', and Jentic returns the matching httpbin operation with its input schema so the agent calls the right endpoint without browsing the reference docs.
Related APIs
Alternatives and complements available in the Jentic catalogue.
FAQs
Specific to using httpbin.org API through Jentic.
What authentication does httpbin require?
httpbin.org has no authentication on its own - it is a public service. Some endpoints like /basic-auth and /bearer return 401 unless you supply credentials, but those credentials are echoed for testing only and not validated against any account.
Can I use httpbin to test retry logic for AI agents?
Yes. Hit /status/{codes} with values like 429, 500, or 503 to trigger deterministic failures, and /delay/{delay} for slow responses. Together these cover the most common retry and circuit-breaker test paths.
What are the rate limits for httpbin.org?
httpbin.org is a public service with no documented per-key limits. For high-volume testing, run kennethreitz/httpbin locally with docker run -p 80:80 kennethreitz/httpbin to avoid rate-limit risk and shared-instance variance.
How do I use httpbin through Jentic to debug an agent?
Search Jentic for echo an http request, load the /anything operation on httpbin, and execute. The response shows exactly which headers, query parameters, and body the agent sent - useful for diagnosing tool-call construction bugs.
Does httpbin support testing compressed responses?
Yes. /gzip, /deflate, and /brotli return responses encoded with the named compression so the client's decompression handling can be verified end-to-end.
Is httpbin free to use?
Yes. httpbin.org is free and open-source. The same service can also be self-hosted via the kennethreitz/httpbin Docker image for fully isolated CI usage.
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