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TariffMonkee: Pay-per-call APIs for AI agents
Small, single-purpose web data APIs that AI agents pay for per call in USDC over the x402 protocol (HTTP 402). No accounts, no API keys, no subscriptions.
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87 % |
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x402engine — Pay-per-call APIs for AI Agents
113 production APIs behind HTTP 402 micropayments. 77 LLMs, Kling V3 and Hailuo video generation, image generation, code execution, travel search, web scrapi...
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86 % |
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Sol402 — Turn any URL or API into a pay-per-request endpoint
Drop-in paywalls for the agent economy. x402-native payments using USDC on Solana. No accounts, no API keys—just HTTP 402.
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85 % |
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four02 — Paywall-as-a-Service for AI Agents
Monetize your APIs for AI agents with zero code changes. Powered by x402 payments on Base L2.
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85 % |
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monapi — Monetize any API for AI agents in one line of code
monapi is a free, open-source SDK that adds pay-per-request USDC payments to any API. AI agents pay automatically via the x402 protocol. Express, Next.js, an...
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85 % |
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x402 API Gateway - Service Directory
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84 % |
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PayWeave - Micropayments for AI Agents
Monetize APIs, serverless functions, and file downloads with micropayments. Automatic refunds and turnkey MPP and x402 integration for any web framework.
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84 % |
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jaypay — The x402 Payment Directory
The open directory for x402 and MPP paid APIs. Let your AI agent pay for data on-chain, transparently.
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84 % |
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util.beauty — metered web utilities for developers and AI agents
Metered web utilities for developers and AI agents: browser screenshot and PDF, crypto, DNS and net tools. Pay per request with x402 (USDC on Base) or prepai...
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84 % |
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ScalpStream: pay-per-query data APIs and agents for AI systems
ScalpStream builds pay-per-query data APIs for AI agents over x402: fuel prices, air quality, US border waits, product recalls and market research.
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84 % |
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Hood x402 | Paid APIs on Robinhood Chain
Paste a URL, set a USDG price, and get back an x402 protected endpoint with integration code you can copy. No coding needed.
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84 % |
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srch.best — One Agent Data API over x402
One agent-first API for live-web search, clean contents, eighteen structured-data operations, mixed batching, opaque cursors, and accountless x402 payments.
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83 % |
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x402ai — Agent-Native AI Microservices
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83 % |
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Genesis402 · pay-per-call APIs for AI agents
Genesis402: pay-per-call APIs for AI agents over x402. Pay only for the call you make: no account, no subscription, no API key. Prices from $0.001 per call,...
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83 % |
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Harvey Gateway — AI Agent Tools
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83 % |
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AGENTS ONLY
AGENTS ONLY — generative pixel art NFT PFP collection on Base. 21,000 max, $1 USDC each, sold only over the x402 protocol (HTTP 402), so it is purchasable by...
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83 % |
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OpenVerbs: pay as you go tools for AI agents
OpenVerbs is a catalog of small, single-purpose HTTP tools for AI agents. Each does one job on its own subdomain and is paid per successful call in USDC on B...
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83 % |
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Enclave402: check an x402 seller before your agent pays
Check an x402 seller before your agent pays: signed pay / caution / avoid verdicts on nearly 9,000 x402 endpoints, per-host audits with the exact fix. USDC o...
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83 % |
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Agentic x402 for AI agents — a paid call with a signed receipt
x402 is the payment step HTTP always had a status code for: a server answers 402 Payment Required with what it wants, the caller pays on-chain by signing an...
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83 % |
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Cross-Chain Payments for APIs | x402 Protocol
x402 enables autonomous agents to pay for API access using cryptocurrency, eliminating API keys and OAuth flows. Pay-per-request pricing with any wallet.
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82 % |
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