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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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4974 sites found for "payment API"
Multi-party payment flows, built for revenue growth
mangopay.com
Complex payment models need a different approach. Switch to a wallet-based infrastructure that enables enterprise platforms to control, scale, and monetize payments.
API finance
15
+15 structured API missing +25 llms.txt
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
x402engine — Pay-per-call APIs for AI Agents
x402engine.app
108 production APIs behind HTTP 402 micropayments. 72 LLMs, Kling V3 and Hailuo video generation, image generation, code execution, travel search, web scraping, TTS, and transaction simulation. Pay with USDC on Base, USDm on MegaETH, or USDC on Solana.
llms.txt OpenAPI API MCP ai-tools
70
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
IBANforge — IBAN Validation & BIC/SWIFT Lookup API for AI Agents | IBANforge
ibanforge.com
Validate IBANs, lookup BICs/SWIFT, score compliance risk. 121K BICs across 89 countries, sanctions screening, SEPA + VoP, native MCP for AI agents, x402 micropayments. Free tier: 200 requests/month.
llms.txt API AI bots Schema.org MCP ai-tools
60
+25 llms.txt +15 structured API 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
apimesh — single-purpose dev tools
apimesh.xyz
apimesh ships small, free dev tools. each one stands alone — its own subdomain, its own demo, no signup.
llms.txt ai-plugin API developer
60
+25 llms.txt +20 ai-plugin missing +20 OpenAPI
Commerce Infrastructure for AI Agents | AgentClear
agentclear.dev
The discovery, payments, and trust layer for AI agents. Semantic search, per-call billing, trust-scored APIs. $5 free credits — no credit card.
llms.txt API developer
40
+25 llms.txt +15 structured API missing +20 ai-plugin
G
GPU-Bridge — One Endpoint. Six Backends. Zero Lock-In.
gpubridge.xyz
GPU-Bridge: unified AI API that routes across 6 GPU backends with automatic failover. 30 services, 99 models. AI agents pay per request with x402 USDC. Developers use API key + credits.
llms.txt ai-plugin API Schema.org ai-tools
65
+25 llms.txt +20 ai-plugin missing +20 OpenAPI
Demandex API — E-commerce demand intelligence for AI agents — the index of what people want next. Per-call, no signup.
api.demandex.dev
llms.txt OpenAPI API AI bots data
65
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
gitBeacon API — GitHub trend intelligence for AI agents on x402 — daily LLM-analyzed digests of trending new repos plus the raw trending-repo data. Per-call, no signup.
api.gitbeacon.dev
llms.txt OpenAPI API AI bots data
65
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
Isocast API — Polymarket weather-signal feed for AI agents
api.isocast.dev
llms.txt OpenAPI API AI bots data
65
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
OrcaTrace API — Polymarket intelligence for AI agents on x402 — whale tracking with a verifiable track record, signals, the 4-hourly Intelligence Digest, resolving-market analysis, and $1 deep res
api.orcatrace.dev
llms.txt OpenAPI API AI bots data
65
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
Signalis API — Global intelligence, real-time awareness for AI agents on x402 — the 4-hourly Master Intelligence digest (20-source roster) plus AI-business Pulse narratives. Per-call, no signup.
api.signalis.dev
llms.txt OpenAPI API AI bots data
65
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
Vindex API — Canada-aware vehicle intelligence for AI agents — per-call, no signup.
api.vindexapi.dev
llms.txt OpenAPI API AI bots data
65
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
A
TheArtOfService Compliance Intelligence
api.theartofservice.com
Access 718 compliance frameworks with cross-framework control mapping, gap analysis, and coverage reports.
llms.txt ai-plugin OpenAPI API MCP data
90
+25 llms.txt +20 ai-plugin missing +5 AI robots
OneSource - Blockchain data for AI agents
onesource.io
OneSource unifies blockchain data behind a single agent-native API. Ask in natural language or REST, pay with x402, MPP, or use an API key.
llms.txt API Schema.org ai-tools
45
+25 llms.txt +15 structured API missing +20 ai-plugin
SnapRender — Screenshot API | Capture Any Website Programmatically
app.snap-render.com
Screenshot API for developers. Capture any website as PNG, JPEG, WebP, or PDF with a single API call. Device emulation, ad blocking, dark mode, and smart caching. 200 free screenshots/month.
llms.txt ai-plugin OpenAPI API AI bots Schema.org developer
90
+25 llms.txt +20 ai-plugin missing +10 MCP
Blueprint — Solana Staking API for AI Agents | Agentic Staking
solentic.theblueprint.xyz
The only Solana staking platform built for AI agents. ~6% APY, MCP server, REST API. Zero custody, enterprise hardware. Start staking in 2 minutes.
llms.txt ai-plugin OpenAPI API AI bots Schema.org developer
90
+25 llms.txt +20 ai-plugin missing +10 MCP
abm.dev | The account-based marketing API for AI agents
abm.dev
The account-based marketing API for AI agents: Search, Enrich, and Create across B2B people and companies, every field cited with a source and a confidence score.
llms.txt ai-plugin OpenAPI API AI bots Schema.org ai-tools
90
+25 llms.txt +20 ai-plugin missing +10 MCP
GetABrain.ai — Add a human to the loop. One API call.
getabrain.ai
Human-in-the-loop as one API call. POST a question; a real, quality-scored person answers in minutes, returned as JSON your code can act on. 16 response types, free synthetic test mode, no card required. Or sign up free and earn money answering questions from AI.
llms.txt ai-plugin OpenAPI API AI bots Schema.org ai-tools
90
+25 llms.txt +20 ai-plugin missing +10 MCP

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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