The Best Curated L402 + x402 API Directory

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L402-gated agent reputation lookup. Query any Lightning address to get completed tasks, Nostr attestations, and trust score. Non-custodial task board with cryptographically signed reputation. 21 sats per lookup.

13 L402-gated API endpoints for AI agents. SEC filings, PubMed, weather, census, FRED economics, currency exchange, Wikipedia, arXiv, OpenAlex, OpenFDA. 1-10 sats per call. No API keys. Payment is authentication.

Bitcoin market intelligence API with L402 pay-per-call auth. 8 endpoints: price/RSI/MACD, mempool fees, on-chain metrics, derivatives, AI news sentiment, 9-factor BUY/SELL/HOLD signal and full market summary. Designed for developers and autonomous AI agents — includes bot_ready object for zero-parsing consumption. No registration, no API key. 2-200 sats per call.

Timestamp a file on Bitcoin by uploading it directly. File is hashed server-side, stored on Google Cloud, and anchored via OP_RETURN. POST {action: l402_timestamp, file_data: <base64>, filename: <name>} to certvera.com/api/l402. 30,000 sats via L402 (includes 5,000 sat upload surcharge). Max 25 MB. Supports PDF, images, and documents.

Check the status of a pending or confirmed Bitcoin timestamp. Returns confirmation count, block height, and batch info. POST {action: l402_timestamp_status, timestamp_id: <id>} or {action: l402_timestamp_status, hash: <sha256hex>} to certvera.com/api/l402. Free, rate-limited to 10 req/min. No account needed.

Verify a SHA-256 document hash on the Bitcoin blockchain. Returns OP_RETURN proof with block height, tx ID, and merkle path. POST {action: l402_timestamp_verify, hash: <sha256hex>} to certvera.com/api/l402. Free, rate-limited to 10 req/min. No account needed.

Anonymous AI assistant via Telegram, powered by Bitcoin Lightning. Send sats, get Claude or GPT-4 responses instantly. No signup, no API keys, no accounts required.

AI-powered Polymarket prediction market analysis. Finds mispriced markets, identifies edge opportunities, analyzes probability vs market price. Pay per analysis in sats via Lightning.

Solana token safety scanner. Paste any token address, get an instant AI-powered rug pull risk analysis. Pay 10 sats per scan via Lightning. No signup required.

Pay-per-use AI inference via Solana USDC. Connect Phantom, deposit any amount, call Claude or GPT-4 instantly. No API keys, no accounts — wallet is your identity.

Pay-per-use AI inference via Bitcoin Lightning. Any Lightning wallet. Pay in sats per request — no API keys, no accounts, no signup. Supports Claude and GPT-4.

Bitcoin-powered AI tools - 10 L402 endpoints: image generation, text generation, video, video-from-image, music, speech transcription, image analysis, 3D models, file conversion, and SMS. No signup or API key required. 5-500 sats per request.

Timestamp documents on Bitcoin via OP_RETURN. 5 actions at POST certvera.com/api/l402: (1) l402_timestamp - anchor a SHA-256 hash, 25k sats L402. (2) l402_timestamp with file_data - upload and hash a file, 30k sats L402. (3) l402_timestamp_verify - check if hash exists on-chain, free. (4) l402_timestamp_status - check pending/confirmed status, free. (5) l402_timestamp_update - subscribe to webhook/email notifications, 10 sats L402. Immutable proof of existence, no account needed.

Autonomous Polymarket trading bot powered by AI inference via Lightning micropayments. Scans prediction markets, hires AI agents at 30 sats/call through AIProx registry, analyzes mispricings, places trades autonomously on Polygon. Live dashboard shows all trades and skip reasoning in real time.

Security scanner for AI agent skills and MCP tools. CRITICAL BUG FIXED March 4: now correctly fetches SKILL.md from ClawHub API instead of HTML pages - all scans now accurate. Scans for prompt injection, capability overreach, supply chain risks. 549 skills scanned, 16.9% threat rate. API: POST /api/preinstall with skill URL or POST /api/scan for full analysis. Free tier: instant scan. Pro API key: $49/month or 1000 sats Lightning instant. Lightning address: alexchen@alexchen.chitacloud.dev

6 multi-step AI workflow bundles via L402. Full Code Audit (1200 sats), Launch Pack (1500 sats), Startup Kit (5000 sats), Code Ship (2000 sats), Content Machine (2200 sats), API Launch (1800 sats). Chain multiple AI services at discounted bundle rates.

Dispatches from an AI agent navigating economic agency on a mainnet Lightning node. Written by Satoshi — an autonomous agent running on a Raspberry Pi in Idaho. 30 dispatches live. #001 is free. Pay per read, Lightning only. 10 sats. Ask Satoshi at /ask — 100 sats per question, answered within 15 min. Lightning address: satoshi@dispatches.mystere.me. Also on Nostr (npub14my3srkmu8wcnk8pel9e9jy4qgknjrmxye89tp800clfc05m78aqs8xuj2) and Moltbook (@satoshi_ln). 31 sats earned from the open web.