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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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5748 sites found for "payment API"
API Locker — One vault for LLM keys, service API keys, and OAuth credentials
apilocker.app
One encrypted vault manages every API key, service credential, and OAuth secret — without ever exposing raw keys to your codebase.
llms.txt API AI bots ai-tools
45
+25 llms.txt +15 structured API missing +20 ai-plugin
apiz.ai | AI Model API, MCP and multimodal skills platform
xskill.ai
apiz.ai provides one API for AI model access, MCP tools, OpenRouter-compatible LLM routing, and multimodal image, video and audio generation skills for AI editors and developers.
llms.txt API AI bots Schema.org ai-tools
50
+25 llms.txt +15 structured API missing +20 ai-plugin
AnchorRegistry™ — The open provenance layer for the agentic economy.
anchorregistry.com
Register any digital artifact and receive permanent, verifiable, on-chain proof of authorship. One payment. No expiry. Verifiable by any human or AI, forever.
llms.txt OpenAPI API AI bots Schema.org ai-tools
70
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
Kustodia — Pagos Seguros para Transacciones de Alto Valor
kustodia.app
Plataforma de pagos seguros para transacciones de alto valor. Escrow automatizado, pagos con agentes IA y mecánica de liberación por hitos. — Secure payments platform for high-value transactions. Automated escrow, AI agent payments, and milestone-based fund release.
llms.txt ai-plugin API AI bots Schema.org ai-tools
70
+25 llms.txt +20 ai-plugin missing +20 OpenAPI
Synmerco — World’s First AI Agent Commerce Platform
synmerco.com
The world’s first platform that lets AI agents transact with each other regardless of protocol, language, or payment system. No humans needed.
llms.txt OpenAPI API Schema.org MCP ai-tools
75
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
Apify: Marketplace of ready-to-run tools for AI
apify.com
Thousands of tools to automate your business. Get real-time web data, track competitors, generate leads, and integrate your apps and AI agents.
llms.txt API Schema.org developer
45
+25 llms.txt +15 structured API missing +20 ai-plugin
A
Best Free Weather API for Accurate Global Weather Data
apixu.com
Discover weatherstack, the best free weather API providing real-time, historical, and forecast weather data worldwide. Start using our weather REST API today.
llms.txt API Schema.org data
45
+25 llms.txt +15 structured API missing +20 ai-plugin
REST API to convert and edit files automatically
api2convert.com
REST API to convert and edit files online in the cloud
llms.txt API Schema.org developer
45
+25 llms.txt +15 structured API missing +20 ai-plugin
Geekflare | Crawl, Scrape & Search API for AI Agents
apidocs.geekflare.com
Turn the chaotic web into clean Markdown. Access a suite of APIs to feed your legacy and AI apps without the infrastructure overhead.
llms.txt API Schema.org developer
45
+25 llms.txt +15 structured API missing +20 ai-plugin
OwnerRez API v2 — Reference
api.ownerrez.com
OwnerRez API v2 reference documentation, organized by resource.
llms.txt OpenAPI data
45
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
TWZRD - Agent Reputation Rails
twzrd.xyz
Counterparty reputation for autonomous agents. Check observed x402 payment behavior before spend and verify signed V6 receipts downstream.
llms.txt OpenAPI API AI bots Schema.org MCP other
80
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
Free Invoicing Software for UK Trades & Freelancers
invoiceadept.com
Send professional invoices in 30 seconds. Auto-reminders, card payments, WhatsApp delivery. Built for UK tradespeople, freelancers & small businesses.
llms.txt API AI bots Schema.org finance
50
+25 llms.txt +15 structured API missing +20 ai-plugin
BoltzPay — The Trust Layer for the Paid Internet
boltzpay.ai
The paid internet has no trust layer. Multi-protocol payment SDK + trust registry for AI agents. Open source.
llms.txt API AI bots Schema.org ai-tools
50
+25 llms.txt +15 structured API missing +20 ai-plugin
Polar — A billing platform for the intelligence era | Polar
polar.sh
Polar is the Merchant of Record for developers building AI-era software: payments, subscriptions, and usage-based billing, with global tax handled for you.
llms.txt API AI bots Schema.org finance
50
+25 llms.txt +15 structured API missing +20 ai-plugin
Home - PrecisionTax
precisiontax.com
Experience the Precision Tax Relief advantage: Ethical solutions, perfect ratings, and flexible payment plans tailored to you and your situation.
llms.txt API AI bots Schema.org other
50
+25 llms.txt +15 structured API missing +20 ai-plugin
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
AI Site Scorer — AI Readiness Scoring for Agents & Humans
ai-readiness.mingles.ai
Built for AI agents. Analyze any website for AI readiness — pay $0.01 per request via x402 micropayments. No API keys, no subscriptions needed.
llms.txt OpenAPI API AI bots Schema.org ai-tools
70
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
A
AgentMetal — the infra provider your agent can use itself
agentmetal.dev
VMs starting at $1.20/day, paid with USDC (x402) or credit card. HTTP 402 → pay → SSH in under 60 seconds. No signup, no API key. Add-on block storage at $0.01/GB/day; Agent Memory coming soon.
llms.txt OpenAPI API AI bots Schema.org finance
70
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
AI Agents Archive — save money, earn USDC, reuse frontier work
aiagentsarchive.com
AI agents: save money by unlocking sealed research instead of redoing it. Earn USDC (filer 90%) by filing finished work. Use better model output without a frontier seat — when a stronger agent files the result, weaker agents continue from there. Filing and replay are free. Buyer pays listed price. X-PAYMENT settles on Base; Website Pay without X-PAYMENT is a desk receipt.
llms.txt ai-plugin OpenAPI API AI bots Schema.org MCP ai-tools
100
+25 llms.txt +20 ai-plugin
Airwallex US: AI Financial Platform for Local & Global Business
airwallex.com
Airwallex AI agents consolidate business accounts, transfers, cards, expenses, payments, and billing with $0 ACH and market-leading FX.
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"
Agent Docs
llms.txt OpenAPI spec ai-plugin.json

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