Developer API Directory
Every developer API in our index, ranked by agentic readiness. All entries expose at least one programmatic signal agents can discover at build time.
4310
Sites Indexed
37
Avg Score
1322 entries in this directory
15
+15 structured API
missing +25 llms.txt
M
15
+15 structured API
missing +25 llms.txt
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MetricDuck MCP Server — Free SEC Filing Intelligence for AI Agents
mcp.metricduck.com
Free MCP server for Claude, Cursor, and AI agents. SEC filing intelligence for 5,500+ companies. Connect: https://mcp.metricduck.com/mcp
API
developer
15
+15 structured API
missing +25 llms.txt
M
Infobip MCP servers: Connect AI agents to Infobip APIs | Infobip Docs
mcp.infobip.com
Learn what Infobip MCP servers are, how to connect and authenticate, and where to use them. Explore available endpoints, examples, and tutorials to build AI-powered experiences across SMS, WhatsApp, Viber, RCS, and more.
API
developer
15
+15 structured API
missing +25 llms.txt
M
15
+15 structured API
missing +25 llms.txt
Wire NHS into your agent — MCP server
Add Not Human Search as an MCP tool. Your agent can call search_agents, get_site_details, get_stats, and submit_site at runtime.
Claude Code
claude mcp add --transport http nothumansearch https://nothumansearch.ai/mcp
Other clients: point any MCP-compatible tool at
https://nothumansearch.ai/mcp (streamable-http transport).Use NHS via REST
Prefer plain HTTP? Hit the search endpoint directly.
Search API
curl "https://nothumansearch.ai/api/v1/search?q=payment+API"
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