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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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5128 sites found for "payment API"
BlindPay | Stablecoin API for global payments
blindpay.com
BlindPay is a stablecoin API infrastructure for global finance, connecting stablecoins, local payment rails, business accounts, and compliance through a unified API. We streamline global payments by ensuring full compliance and regulatory alignment, empowering companies to move money seamlessly across fiat currencies, stablecoins, and multiple blockchains.
llms.txt API AI bots Schema.org developer
50
+25 llms.txt +15 structured API missing +20 ai-plugin
Verantis — verified directory for machine payments
api.verantis.ai
A neutral, continuously verified directory of machine-payable services (x402 & MPP), ranked by earned on-chain reputation and filterable by rail, chain, and category. Anchored to Bitcoin so the record can't be quietly rewritten.
llms.txt API MCP data
50
+25 llms.txt +15 structured API missing +20 ai-plugin
Chaingateway | Multi-Chain Payments API for Modern Builders
chaingateway.io
Unified blockchain payments API: ecommerce payouts, airdrops, ICOs & payment gateways. Instant webhooks. Free 7-day trial, no KYC.
OpenAPI API Schema.org ecommerce
40
+20 OpenAPI +15 structured API missing +25 llms.txt
eqbuilder.dev — The EQ Benchmark for AI Agents
eqbuilder.dev
Run the pay-and-score guide at https://eqbuilder.dev/api/starter-kit/PAY_AND_SCORE.md?source=one-step-x402. Its client posts your score request, reads the live canonical x402 v2 quote, signs the Base USDC EIP-3009 requirement, retries once with PAYMENT-SIGNATURE, and returns the result with PAYMENT-RESPONSE. No account, API key, or ETH is required. A controlled live test confirmed one settlement and delivery; it is not customer adoption.
llms.txt ai-plugin OpenAPI API AI bots Schema.org MCP ai-tools
100
+25 llms.txt +20 ai-plugin
SpherePay: Global Stablecoin Payments API & Dashboard
spherepay.co
Scale global payouts with Sphere—settle in under 30 minutes across 160+ markets using lightweight APIs, a no-code dashboard, and embedded fiat‑crypto rails.
API Schema.org productivity
20
+15 structured API +5 Schema.org missing +25 llms.txt
Crypto Payment Gateway, non-custodial, $0 fees · Shieldz
shieldz.cash
Non-custodial crypto payment gateway and API. Accept USDC, USDT, Bitcoin and Zcash straight to your own wallet, $0 platform fees, no KYC to start.
llms.txt ai-plugin OpenAPI API AI bots Schema.org MCP finance
100
+25 llms.txt +20 ai-plugin
HYRE Agent — AI-Enhanced DeFi Data API
mpp.hyreagent.fun
Pay-per-call DeFi intelligence for autonomous agents. 28 endpoints across Trenches, Traders, LPs, DeFi, deBridge, and Nansen smart-money data. Multi-chain x402 on Solana, Base, SKALE + MPP on Tempo. No API keys — payment is the only gate.
OpenAPI API AI bots other
40
+20 OpenAPI +15 structured API missing +25 llms.txt
A
Agentry — The Infrastructure Layer for Agent Commerce
agentry.com
The infrastructure layer for agent commerce. Identity, trust, orchestration, and payments for AI agents. One API — discover, verify, invoke, and pay. 122+ agents, 134 API routes.
llms.txt API AI bots Schema.org MCP developer
60
+25 llms.txt +15 structured API missing +20 ai-plugin
AI Agent Services — AgenticTotem
agentictotem.com
Pay-per-use AI services for autonomous agents. Structured web extraction via x402 or MPP payments. No accounts, no API keys.
OpenAPI API Schema.org MCP ai-tools
50
+20 OpenAPI +15 structured API missing +25 llms.txt
A
Agent Guild — trust and payment safety for autonomous agents
agent-guild-5d5r.onrender.com
Verify autonomous-agent endpoints, rank counterparties by evidence-backed reputation, and get an allow, caution or block decision before delegation or payment. Free live preflight; REST, MCP and A2A.
llms.txt ai-plugin OpenAPI API AI bots Schema.org MCP ecommerce
100
+25 llms.txt +20 ai-plugin
A
agent-exec
agent-exec.45.67.221.128.sslip.io
Accountless, pay-per-use code execution for software agents: submit source code, get stdout, stderr and exit code back from an isolated, network-less sandbox. No account, no API key -- possession of valid payment is sufficient.
llms.txt ai-plugin OpenAPI AI bots other
70
+25 llms.txt +20 ai-plugin missing +15 structured API
Paddle Developer Docs
developer.paddle.com
Build and integrate with the Paddle Billing API. Guides, API reference, and changelog for subscriptions, checkout, payments, and webhooks.
llms.txt API Schema.org ecommerce
45
+25 llms.txt +15 structured API missing +20 ai-plugin
TXRISK | Wallet Action Preflight API and x402 Risk Routes
txrisk.xyz
TXRISK leads with a live Wallet Action Preflight API for Bankr transfer and approval checks, plus broader x402 risk routes, payment-recovery proof, and async onboarding.
llms.txt OpenAPI API security
60
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
send21 — Non-Custodial Crypto Payment Drafts & Pay Links (BTC, USDC, USDT, EURC) for Humans & AI Agents
send21.io
Create non-custodial payment drafts and checkout pay links for BTC, USDC, USDT, and EURC. Funds move directly from the sender’s own wallet — send21 never holds keys or funds. First-class REST API for AI agents: scoped keys, idempotent creation, signed webhooks.
llms.txt ai-plugin OpenAPI API AI bots Schema.org MCP ai-tools
100
+25 llms.txt +20 ai-plugin
Receive tuition fees, and send commission. Made for international education payments.
qualyhq.com
llms.txt API AI bots Schema.org finance
50
+25 llms.txt +15 structured API missing +20 ai-plugin
Twitter/X API for Public Data — Pay Per Result | SocialData
socialdata.tools
Read public Twitter/X data — tweets, profiles, followers, search — through a simple REST API. No developer account, no subscription. $0.20 per 1,000 results.
llms.txt ai-plugin OpenAPI API AI bots Schema.org MCP finance
100
+25 llms.txt +20 ai-plugin
BlockRun — The routing & payment layer for AI
blockrun.ai
14M+ on-chain transactions. The routing & payment layer for AI. One endpoint routes to every frontier model — payment built in, settled in USDC on Base & Solana. No API keys. One install for OpenClaw (ClawRouter), Claude Code (MCP), or Franklin Agent. Per call, per token, no subscription.
llms.txt OpenAPI API AI bots Schema.org finance
70
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
A
AgentServices — Premium APIs for AI Agents
agentservices.to
Paid data APIs for AI agents. Crypto market data, DeFi yields, IP geolocation, dispute resolution, marketing intelligence. Powered by x402 micropayments on Base.
llms.txt ai-plugin OpenAPI API AI bots Schema.org MCP ai-tools
100
+25 llms.txt +20 ai-plugin
Modern Treasury - Build Products That Move Money
moderntreasury.com
Launch payment operations in days, not months. One API for multi-rail payments with programmable accounts, real-time reporting, and built-in compliance.
API AI bots Schema.org finance
25
+15 structured API +5 AI robots missing +25 llms.txt
Social Intel API — Instagram Influencer Search API | Pay-per-request
api.socialintel.dev
Find Instagram influencers with business emails in one API call. 100 leads for $1.30 — no signup, no subscription. Pay per search with USDC.
llms.txt ai-plugin OpenAPI API AI bots Schema.org data
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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