“OpenAPI”

Turn any OpenAPI/Swagger spec into MCP tools.

Lint OpenAPI 3.x documents for missing security, responses, descriptions and versioning.

Local OpenAPI contract and breaking-change checks for AI agents.

Point Gecko at an OpenAPI spec; get first-call-correct, auth-hidden agent tools.

Mock OpenAPI specs locally, or log in to deploy hosted mocks on mockzilla.org from your MCP client.

Free agent-service discovery, OpenAPI document checks, and receipt verification.

AgentDiet A2A, MCP & HTTP 402 Endpoint SLA Compliance Auditor

agentdiet.devOfficial

Audits any remote agent or MCP URL for JSON-RPC compliance, latency SLA, OpenAPI schema, and HTTP.

Deterministic validation for AI-generated artifacts: JSON Schema, OpenAPI response, SQL syntax.

Public HTAG discovery for MCP tools, API endpoints, OpenAPI ops, and agents.

Autonomous AI microservices: 55 dynamic guardrails, contract audits & oracles via L402/x402/MPP.

API Schema Drift Monitor — detect breaking changes in OpenAPI specs

APIs.guru MCP — keyless directory of 2,500+ public APIs and their OpenAPI specs.

MCP server for Nexon MapleStory OpenAPI - character, rankings, union, guild, and notices

Free API/MCP/x402 health checks plus $19 hourly managed monitoring for agent services.

OpenAgenda

openagenda.comOfficial

Search, analyze and manage events on OpenAgenda.

PR blast radius and 0-1 risk score from git history, so low-risk PRs can be auto-approved.

Typed AI judgments for agents: choice, score, and yes/no probabilities instead of prose.

OpenAQ MCP — global air-quality measurements via the OpenAQ v3 API.

OpenAIRE MCP — EU research outputs (publications, datasets, software, projects)

OpenF1 MCP — real-time & historical Formula 1 data.

OpenAgenda MCP.

OpenSea MCP — NFT marketplace data (v2 API)

OpenFEC MCP — Federal Election Commission campaign finance data

OpenFEMA MCP — US Federal Emergency Management Agency open data.