"Search functionality without API key requirement" matching MCP connectors:
GET /v1/connectors — MCP directory API referenceMatching Connector Tools:
Conformance checker for MCP servers. Free, no key, verdicts recomputable and re-measured daily.
Detect breaking changes, generate changelogs, diff, and validate OpenAPI specs.
Audits a sample of HTTP request URLs against explicit, documented cache-key standardization rules...
Any API, four tools: discover, call with routing and signed receipts, verify, dispute.
Guide developers from setup through a verified, policy-aware, audited Alter API call.
SqueezeOS MCP for live machine discovery and x402-paid USDC APIs on Base.
ship-on-friday MCP — wraps StupidAPIs (requires X-API-Key)
Your DRF API as MCP tools — 1,800 endpoints become 16 dispatchers, permissioned by Django.
Turn any task into the right API calls: discover, evaluate, and integrate public APIs.
npm MCP — wraps the npm Registry API (free, no auth)
mercury-number MCP — wraps StupidAPIs (requires X-API-Key)
always-seven MCP — wraps StupidAPIs (requires X-API-Key)
Point Claude Code, Qwen Code, Cursor, or any MCP client at https://docs.jmeter.ai/api/mcp and your agent answers JMeter questions grounded in this documentation, with a source link for every answer. Free, no API key, no signup.
Search the JoJ API marketplace, read endpoint docs, and call any API with one key via one gateway.
MCP tool observatory: do registry servers answer, and are their answers true? No key.
Ephemeral mailboxes and a mock OAuth IdP for testing email and auth flows — 39 API-driven tools covering mailboxes, mails, attachments, domains, teams, and mock identities.
yc-rejection MCP — wraps StupidAPIs (requires X-API-Key)
Apideck Unified API MCP — 330 tools across 200+ SaaS connectors (accounting, CRM, HRIS, ATS).
Deterministic validation for AI-generated artifacts: JSON Schema, OpenAPI response, SQL syntax.
API governance for AI agents. Detects breaking changes, scores blast radius, blocks unsafe calls.
