api-discovery MCP servers & tools

Proprietary hosted Streamable HTTP MCP gateway for API discovery, operation schemas, API calls, usage checks and subscription management through five tools: search_apis, get_api_tools, call_api, check_usage and manage_subscription. Requires an API.market account with OAuth (recommended) or API-key authentication. Free tiers, paid plans and limits vary by API; API calls and subscription changes may incur charges. OAuth/PKCE and five-tool discovery verified with Claude Code 2.1.281; not every API operation or client has been tested. The public integration repository contains configuration and documentation, not the hosted server implementation. Connect directly to https://api.market/api/mcp/gateway; no local package is required.

Natural language API discovery — search 700+ API capabilities, get endpoints, auth setup, and code snippets. Supports auto-discovery of new APIs.

Official SynapseNetwork MCP server for agent payments, service discovery, and receipts.

One MCP endpoint over 75 public PPN APIs: search_apis to discover, execute_api to call. Free tier.

Discover, compare, and monitor 1,400+ APIs directly from your AI coding agent.

MCP server for Singularity Marketplace - browse and discover APIs, products, and ERC-8004 agents

API discovery and selection for AI agents connecting to the physical world.

Find verified APIs and MCP servers for AI agents: auth, free tier, MCP endpoint, docs.

Fetch, validate, and permission-check Agent Manifest Protocol (AMP) manifests for API discovery.