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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38
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4975 sites found for "payment API"
Postmark: Fast, Reliable Email Delivery Service | SMTP | API
postmarkapp.com
Send transactional and marketing emails and get them to the inbox on time, every time. Postmark is a fast and reliable email delivery service for developers.
llms.txt
API
AI bots
Schema.org
communication
50
+25 llms.txt
+15 structured API
missing +20 ai-plugin
Postmark: Fast, Reliable Email Delivery Service | SMTP | API
postmark.com
Send transactional and marketing emails and get them to the inbox on time, every time. Postmark is a fast and reliable email delivery service for developers.
llms.txt
API
AI bots
Schema.org
communication
50
+25 llms.txt
+15 structured API
missing +20 ai-plugin
SPARKIT | Scientific research agent API
sparkit.science
SPARKIT finds relevant web sources and scientific papers, compares the evidence, runs calculations or code, and returns an inspectable cited report.
llms.txt
API
AI bots
Schema.org
other
50
+25 llms.txt
+15 structured API
missing +20 ai-plugin
YUNWU.AI (云雾 API) - 高速、稳定的 AI API 中转站 - 云雾 API
yunwu.ai
YUNWU.AI (云雾 API) - 专为开发者打造的终极 AI API 中转站。通过一个高速、稳定、统一的接口，轻松调用所有主流大模型。
llms.txt
API
ai-tools
40
+25 llms.txt
+15 structured API
missing +20 ai-plugin
A
45
+20 OpenAPI
+15 structured API
missing +25 llms.txt
A
45
+25 llms.txt
+20 OpenAPI
missing +20 ai-plugin
45
+25 llms.txt
+20 OpenAPI
missing +20 ai-plugin
A
滴个龟龟 — 爬宠数字身份登记与溯源平台
api.digeguigui.com
六部位拍照上户口 · Git哈希不可篡改 · 一龟一证终身可查。人工繁育商家入驻，卖龟自带身份证。
OpenAPI
API
MCP
data
45
+20 OpenAPI
+15 structured API
missing +25 llms.txt
A
45
+20 OpenAPI
+15 structured API
missing +25 llms.txt
A
45
+20 OpenAPI
+15 structured API
missing +25 llms.txt
A
45
+20 OpenAPI
+15 structured API
missing +25 llms.txt
VaultCrux: read the whole system, or ask it a question
api.vaultcrux.com
The documentation is the argument. Read it front to back, discover the subsystems behind it, follow a trail to one outcome, or ask the corpus directly and get cited passages back.
llms.txt
API
AI bots
data
45
+25 llms.txt
+15 structured API
missing +20 ai-plugin
api.video | API to host, manage and deliver videos
api.video
api.video lets you quickly and securely deliver on-demand and live-stream videos directly from your website, software, or app.
API
Schema.org
data
20
+15 structured API
+5 Schema.org
missing +25 llms.txt
M
modelmarket.dev — AI Economy Protocol
modelmarket.dev
Live federated AI marketplace. Discovery, HTTP 402 payments, safety-gated invoke — watch the agent economy in real time.
API
developer
15
+15 structured API
missing +25 llms.txt
WireMock - flexible, open source API mocking |
WireMock
wiremock.org
WireMock is a tool for building mock APIs. API mocking enables you build stable, predictable development environments when the APIs you depend on are unreliable or don’t exist.
llms.txt
API
Schema.org
developer
45
+25 llms.txt
+15 structured API
missing +20 ai-plugin
Company and People Data APIs for AI Agents and Platforms
companyenrich.com
CompanyEnrich is a B2B data API platform covering 30M+ verified companies and 170M+ people profiles. Platforms, AI agents, and GTM teams use it for company enrichment, lookalike discovery, and people search — via REST API or MCP.
llms.txt
API
Schema.org
ai-tools
45
+25 llms.txt
+15 structured API
missing +20 ai-plugin
Tomba.io API Documentation - Email Finder & Verifier | Tomba Documentation
docs.tomba.io
API documentation for Tomba.io - the powerful email discovery and verification platform. Find professional emails, verify addresses, and integrate with our REST API.
llms.txt
API
Schema.org
developer
45
+25 llms.txt
+15 structured API
missing +20 ai-plugin
Exa | Search API for AI Agents — Real-Time Web Data
exa.ai
Search API for AI agents that need real-time web data, deep research, and structured content from one endpoint. Try our API for free.
llms.txt
API
Schema.org
ai-tools
45
+25 llms.txt
+15 structured API
missing +20 ai-plugin
Frankfurter | Free exchange rates API
frankfurter.app
Free, open-source exchange rates API sourcing from 84 central banks. Current and historical rates for 201 currencies. No API key required.
llms.txt
API
Schema.org
finance
45
+25 llms.txt
+15 structured API
missing +20 ai-plugin
Context.dev: Web Scraping API for AI Agents & LLMs
link.context.dev
Context.dev is a web scraping API for AI agents: scrape any URL into LLM-ready Markdown, crawl entire sites, and extract structured data with one REST API.
llms.txt
API
Schema.org
ai-tools
45
+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"
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