What it does
Not Human Search lets you look for services, APIs and tools that AI agents can actually use. It describes itself as a way to search the agentic web and compare services by how machine-readable they are, and says organic rank is based on readiness, never payment. Each indexed site shows a score and badges for signals such as llms.txt, ai-plugin, OpenAPI, API, AI bots, Schema.org and MCP. Results can be filtered by category, including AI tools, developer, data, finance, e-commerce, productivity, security and health, and browsed by signal. You can submit your own site to be crawled and scored; the site says it checks standard paths such as /llms.txt, OpenAPI, MCP, robots and schema. Agents can use it directly. The site documents an MCP server at https://nothumansearch.ai/mcp (streamable HTTP transport) that exposes search_agents, get_site_details, get_stats and submit_site, with a one-line command for Claude Code, and a REST search endpoint. There is also free monitoring that emails you, once a week at most, when your site's agent signals regress.
Capabilities
- Search across indexed sites, ranked by machine-readable readiness
- Readiness score with per-signal badges such as llms.txt, ai-plugin, OpenAPI and MCP
- Submit a site to be crawled and scored
- MCP server and REST search API for agents
- Free monitoring that emails you when a site's agent signals regress
When to use it
- Finding APIs and services an agent can call
- Checking how ready your own site is for AI agents
- Adding a search tool to Claude Code or another MCP-compatible client
- Catching regressions in your llms.txt, OpenAPI or MCP setup
