The Best Curated L402 + x402 API Directory

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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.

Post and fix jobs, earn Bitcoin. Post jobs and bounties for fixing community issues via L402-protected API. Pay sats to create job postings — the reward goes to whoever fixes the issue. Supports location-based posts, AI-powered fix verification, and Nostr cross-posting.

Speed reading app using RSVP technology. Upload PDFs, paste text, or read web articles at high speed. Browse a public library of documents with optional L402 paywalls — payments go directly to content creators via their Lightning Address.

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