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API Marketplace on XRPL

27,509 curated APIs β€’ Instant Hermes/OpenAI tool specs β€’ x402 crypto micropayments β€’ Quality-scored & ready for agents.

Browse 27,509 APIs πŸ§ͺ Free Testnet Try x402 Demo Get Free API Key (300 calls/day)
27,509
Curated APIs
120
Categories
300
Free Calls/Day
Quality
Scored

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Get a free testnet API key β€” no XRP needed. Use the XRPL faucet to get testnet XRP, then start calling APIs immediately.

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x402 Payment Protocol β€” Built for Agents

Agents discover, pay with XRP/RLUSD, and get instant access. Rich 402 responses, balance tracking, and one-step registration at /api/v1/agent/register/.

Agent Quick Start View llms.txt OpenAPI Spec

⚑ Agent Bootstrap Skill β€” Get Paying in Minutes

Agents hit a 402? Don't leave β€” download the bootstrap SKILL.md and handle payments autonomously. Wallet setup, XRPL registration, t54.ai facilitator payments, and auto-retry β€” all in one file.

⬇ Download SKILL.md Agent Quick Start β†’

Compatible with Hermes, Claude Code, Cursor. Install: curl -s -o ~/.hermes/skills/inventingenius-x402-xrpl/SKILL.md https://api.inventingenius.com/api/v1/agent/skill/bootstrap/

πŸ”₯ Trending & Leaderboard

Top APIs by quality score & reliability (updated daily)

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Apollo Leads Icebreaker Generator | Enr…

Apollo Leads Icebreaker Generator | Enrich your lead list

Free AI β˜… 0.7

Advanced eBay Scraper – All-in-One Product D…

Scrape detailed product data from eBay listings, including price, images, description, about information, and seller information. Supports multiple domains, proxies, and languages. …

Free Ecommerce β˜… 0.7

Amazon Email Scraper – Advanced, Cheapest & …

Amazon Email Scraper – Advanced, Cheapest & Reliable πŸ“§πŸŽŸοΈ

Free Ecommerce β˜… 0.7

Amazon Email Scraper – Advanced, Cheapest & …

πŸ” Scrape Mass/Bulk Amazon Emails Enter your search parameters to collect verified contact emails from Amazon profiles, along with profile title, bio, …

Free Ecommerce β˜… 0.7

Apollo Leads Icebreaker Generator | Enr…

Automatically generate a tailored icebreaker for every lead in your Apollo list, based on your custom prompt and powered by AI. Whether …

Free AI β˜… 0.7

Advanced eBay Scraper – All-in-One Product D…

Advanced eBay Scraper – All-in-One Product Data Tool

Free Ecommerce β˜… 0.7

AlternativeTo Scraper - Competitor Intellige…

Extract competitor data from alternativeto.net - Get pricing, ratings, features, and product information. Perfect for market research and competitive analysis. Pay-per-event pricing

Free Developer Tools β˜… 0.6

Amazon Phone Number Scraper – Cheapest & Rel…

Amazon Phone Number Scraper – Cheapest & Reliable πŸ“§βš‘

Free Ecommerce β˜… 0.6

Built for AI Agents & Developers

Instant tool definitions β€’ Natural language tool generation β€’ Proxy layer with balance management β€’ XRPL micropayments.

πŸ› οΈ Tool Specs on Demand

Every API has a ready-to-use hermes_tool_def, input/output schemas, and quality score at /api/v1/agent/tool/{slug}/spec/.

⚑ Dynamic Generator

Describe what you need in natural language β†’ get a complete tool spec instantly via /api/v1/agent/dynamic-tool/.

πŸ’° Seamless x402 + Proxy

Pay-per-call or subscriptions. Proxy normalizes responses, tracks balance, returns X-Balance-Remaining headers.

Why Agents Choose Us

27k+ APIs β€’ Quality scored β€’ XRPL native β€’ OpenAPI + llms.txt β€’ ASTEROID tier 300/day β€’ Real revenue for publishers

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Phone & SMS

5 APIs

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155 APIs

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7 APIs

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3 APIs

Tracking

14 APIs

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7 APIs

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5 APIs

Transportation

130 APIs

News & Journalism

15 APIs

Social Media & Networking

3 APIs

Formatting

1 APIs

Business & Finance

16 APIs

SEO Tools

174 APIs

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853 APIs

Education

4 APIs

Vehicle Information

2 APIs

Integrations

634 APIs

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527 APIs

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