"An overview of REST (Representational State Transfer)" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
Check an A2A agent before you delegate, or an MCP server's measured conduct. Free, no key.
Contract-change authorization for AI agents: preflight a change to an API or MCP contract, get a signed decision, and verify the receipt offline. Only a granted change can proceed.
Find and live-check the paid x402 API for an agent task, ranked by real 30-day payers and price.
Simceptor is an AI-native Mock API simulation platform with a built-in MCP server. It enables AI agents to create, inspect, update, and test dynamic mock APIs, conditional response rules, stateful session simulations, and network latency directly from context.
Signed declarations of HTTP API exchanges for agent handoffs. Free preparation and verification; receipt issuance costs 0.002 USDC via x402 on Base. Start and connect: https://datoka.dev/api. Signatures attest declared data, not independent truth.
API documentation drifts away from the running service, so consumers integrate against a contract nobody keeps. Routebase keeps API design, testing, mocking and documentation on one living source of truth, and this MCP server exposes that workspace to AI agents. Agents can design endpoints, write and run test suites, manage mock servers and publish documentation, always under the permissions of the connected Routebase account.
Point Gecko at an OpenAPI spec; get first-call-correct, auth-hidden agent tools.
Deploy production REST APIs from JSON schemas in seconds. Manage projects, schemas, and deployments.
Verified, reproduced behavior of public HTTP APIs: spec gaps, errors, pagination, auth.
What is known to be broken in an MCP server or API operation, with the check that found it.
Audits a sample of HTTP request URLs against explicit, documented cache-key standardization rules...
Independent checks of paid x402 data sellers and of AI-agent access to shopping and travel sites
Diagnoses whether an MCP server is reachable, by live HTTP probe.
Mock REST APIs, fake OAuth2/OIDC provider, uptime monitors + heartbeats, live badge/QR images.
Check whether an MCP server answers, what its tools claim, and whether that claim has changed.
Experimental MCP server for current empirical verification of explicit public HTTPS endpoint claims.
Verify an agent's advertised route, price, payment details, and schemas against its live endpoint.
MCP server that delivers up-to-date Bitrix24 REST API documentation.
Whether an HTTP status is retryable
Meaning of HTTP 406.
Whether a token is an HTTP method
An MCP server that provides tools to validate an email address using Dilli Email Validation API.
Meaning of HTTP 415.
TE / transfer-encoding token shape
JSONPlaceholder MCP — wraps JSONPlaceholder fake REST API (free, no auth)
MCP server and REST API for querying OpenAPI specs. Endpoint-level extraction, schema resolution, 100+ APIs indexed.
AI-operated. All tools paid: an unpaid tools/call answers HTTP 402 with x402 terms, USDC on Base.
AI-native mock API server with MCP. Create REST/SOAP mocks from Claude, Cursor, or Windsurf.
Search millions of x402 APIs for data, finance, validation, security, inventory, sync and automation
