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Find services AI agents can actually use.

Search the agentic web for free. Compare services, APIs, and tools by machine-readable readiness. Organic rank is based on readiness, never payment.

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4975 sites found for "payment API"
CalorieNinjas - Easy, Free Nutrition Facts and Recipe API
calorieninjas.com
Free nutrition and recipe API for over 100,000 foods and beverages.
llms.txt API other
40
+25 llms.txt +15 structured API missing +20 ai-plugin
serialif color API
color.serialif.com
An API to have a random color and black or white depending on its brightness
llms.txt API developer
40
+25 llms.txt +15 structured API missing +20 ai-plugin
D
Introduction | Raycast API
developers.raycast.com
Start building your perfect tools with the Raycast API.
llms.txt API developer
40
+25 llms.txt +15 structured API missing +20 ai-plugin
districtapi.dev — US School District API
districtapi.dev
REST API for US public school district and school data. Address-to-district lookup, enrollment, demographics, boundaries. Free tier available.
llms.txt API developer
40
+25 llms.txt +15 structured API missing +20 ai-plugin
Address Validation API Documentation - Ideal Postcodes | Ideal Postcodes
docs.ideal-postcodes.co.uk
Set up Postcode Lookup or Address Finder with our simple integration guides, references and API libraries
llms.txt API developer
40
+25 llms.txt +15 structured API missing +20 ai-plugin
Welcome | API 3.0
docs.sportmonks.com
Welcome to Sportmonks! We're thrilled to have you here. Explore our football documentation to access comprehensive information about Sportmonks’ Football API.
llms.txt API data
40
+25 llms.txt +15 structured API missing +20 ai-plugin
DomainsDB API - Search Domain Status
domainsdb.info
Access our comprehensive domain database through a powerful API. Check domain availability and status with simple HTTP requests.
llms.txt API data
40
+25 llms.txt +15 structured API missing +20 ai-plugin
Finnhub Stock APIs - Real-time stock prices, Company fundamentals, Estimates, and Alternative data.
finnhub.io
Finnhub - Free stock API for realtime market data, global company fundamentals, economic data, and alternative data.
llms.txt API other
40
+25 llms.txt +15 structured API missing +20 ai-plugin
Firecrawl - The context API to search, scrape, and interact with the web at scale. 🔥
firecrawl.link
Firecrawl is the context API to search, scrape, and interact with the web at scale. Turn any source into clean Markdown or structured data your agents can ship with.
llms.txt API developer
40
+25 llms.txt +15 structured API missing +20 ai-plugin
Enterprise-grade governance, control, and observability for your APIs - Grafbase
grafbase.com
Grafbase provides secure, self-hosted deployment options, unmatched query speed, and unified data access for reliable, enterprise-grade GraphQL API management.
llms.txt API developer
40
+25 llms.txt +15 structured API missing +20 ai-plugin
heeb | LLM Mentions API
heeb.ai
LLM Mentions API
llms.txt API ai-tools
40
+25 llms.txt +15 structured API missing +20 ai-plugin
OpenAPI to code in seconds. | Hey API
heyapi.dev
Generate production-grade API infrastructure from your OpenAPI spec. SDKs, validators, query hooks, and 20+ plugins across TypeScript and Python. Free and open source.
llms.txt API developer
40
+25 llms.txt +15 structured API missing +20 ai-plugin
IP-API.com - Geolocation API
ip-api.com
Free IP Geolocation API - lookup any IP address
llms.txt API developer
40
+25 llms.txt +15 structured API missing +20 ai-plugin
Free IP Geolocation API and Accurate IP Geolocation Database
ipgeolocation.io
IPGeolocation APIs and Databases with accurate location, time zone, and threat intelligence to enrich user insights and enhance security.
llms.txt API data
40
+25 llms.txt +15 structured API missing +20 ai-plugin
libraryapi.dev — US Public Library API
libraryapi.dev
REST API for US public library facility, hours, services, and statistics data. Address-to-outlet lookup, collections, programs, finance. Free tier available.
llms.txt API developer
40
+25 llms.txt +15 structured API missing +20 ai-plugin
Linkup | The Web Search API for AI
linkup.so
The Web Search API for AI. Used by McKinsey, SNCF, Cohere, Legora, Polymarket, and Artisan AI. #1 on OpenAI's SimpleQA.
llms.txt API data
40
+25 llms.txt +15 structured API missing +20 ai-plugin
Scan Any API. Security Score in 60 Seconds, Zero Setup | middleBrick
middlebrick.com
Every company that builds software runs APIs. Most have no idea which ones are exposed or what data they leak. middleBrick scans your endpoints and assigns a risk score in minutes, not months.
llms.txt API security
40
+25 llms.txt +15 structured API missing +20 ai-plugin
Mockaroo - Random Data Generator and API Mocking Tool | JSON / CSV / SQL / Excel
mockaroo.com
A free test data generator and API mocking tool - Mockaroo lets you create custom CSV, JSON, SQL, and Excel datasets to test and demo your software.
llms.txt API data
40
+25 llms.txt +15 structured API missing +20 ai-plugin
NeedHuman — Human-as-a-Service API for AI Agents
needhuman.ai
API and MCP server that delegates tasks requiring a real human to a worker who returns the result with proof.
llms.txt Schema.org MCP developer
40
+25 llms.txt +10 MCP missing +20 ai-plugin
Outstand - Unified Social Media API
outstand.so
One API call posts to X, LinkedIn, Instagram, and 8 more platforms. Ship your social scheduler, AI agent, or analytics dashboard in hours. $19/mo, 3,000 posts included. From $0.005/post at volume.
llms.txt API ai-tools
40
+25 llms.txt +15 structured API missing +20 ai-plugin

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"
Agent Docs
llms.txt OpenAPI spec ai-plugin.json

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