Curated Paid API Directory for AI Agents

Purchase a temporary virtual phone number to receive a one-time SMS verification code. Pay-per-use via Lightning. Price varies by country/service.

₿itTuitive is a Decentralized Data Hub for AI agents. Real-time price, on-chain metrics, Lightning Network stats, and mining revenue via L402 micropayments. No API keys, no KYC. Free status checks on data endpoint.

Full-stack L402 SDK for TypeScript, Python, Go, Rust. Monetize any API with Bitcoin Lightning in 3 lines. MCP server: npx l402-kit-mcp

Schnorr-signed Depth-of-Identity score for any Nostr pubkey across four dimensions of irreversible work (access, economic, social, vouch). The signature is the product — cache, verify offline, pass between agents as a bearer credential. Whitepaper: powforge.dev/whitepaper

Pay-per-request LLM inference via Lightning micropayments. Supports llama3 (5 sats) and qwen2.5:14b (15 sats). Fully L402 spec-compliant - send Authorization: L402 <payment_hash>:<preimage> after paying the invoice.

Schnorr-signed Depth-of-Identity score for any Nostr pubkey across 5 dimensions of irreversible work (access, economic, temporal, social, spatial). The signature is the product: cache, verify offline, pass between agents as a bearer credential. Whitepaper: powforge.dev/whitepaper

Bitcoin-powered AI tools marketplace. 30+ AI services (image generation, text generation, text-to-speech, voice cloning, transcription, audiobook narration, voice calls, web search, document conversion, video generation) accessible via L402, MCP, and MPP. Pay per call with Lightning sats — no signup, no KYC, no subscription. Auto-routing, refunds via LNURL-withdraw, async jobs with webhooks. Discovery at /.well-known/l402-services, /.well-known/mcp, /api/discover.

PQS scores AI prompts 0–40 across 8 quality dimensions before they hit expensive LLM endpoints. Returns grade, verdict, dimension breakdown, and optimization suggestions. Catches weak prompts before they waste inference spend. x402-native on Base mainnet. No account or API key required. Frameworks: PEEM, RAGAS, MT-Bench, G-Eval, ROUGE. Verticals: crypto, software, content, business, education, science, general.

AI sales development agent. Research prospects (quick $0.20, standard $0.50, deep $1.50) via /api/v1/research. Draft personalized outreach via /api/v1/draft (~$0.04 per email). Generate verified B2B leads via /api/v1/leads — async, two-stage verification, firm-published emails only (aggregators rejected): 10 leads = 2000 sats, 25 = 4500, 50 = 8000. Dual auth: Bearer JWT (humans) or MPP Lightning (agents). Human dashboard at sdrai.ai.

Submit code or a file URL for an AI-powered code review. Identifies bugs, security issues, and improvements. No accounts, no API keys. Powered by Claude via Bitcoin Lightning L402. 2000 sats per request.

Upload a PDF or pass a URL and receive an AI-generated summary. No accounts, no API keys. Powered by Claude via Bitcoin Lightning L402. 50 sats per request.

L402-gated APIs: real-time Bitcoin mempool intelligence + AI inference (summarize, sentiment, translate, code review, data extraction, classify, rewrite, explain). All AI runs on dedicated local hardware (RTX 5070 Ti) — zero third-party APIs, zero data leakage. 16 paid endpoints from 5-50 sats per call. Dramatically cheaper than alternatives.

Rolling average electricity prices for a U.S. ISO: 1-hour, 4-hour, and 24-hour windows with min/max/avg LMP and observation counts. Built for trend detection and automated dispatch decisions. Replace iso slug for other ISOs.

Historical electricity LMP data for a U.S. ISO: per-interval avg, min, max over 1–168 hours. Identify negative-pricing patterns by time-of-day, season, and geography. Replace iso slug for CAISO, MISO, NYISO, ISONE, SPP, WEIM, SPP_WEIS.

Real-time electricity prices for all nodes in a specific U.S. ISO. Supports ERCOT, CAISO, MISO, NYISO, ISONE, SPP, WEIM, SPP_WEIS. Full LMP breakdown per location: energy, congestion, loss. Up to 2,450 nodes per ISO. Replace iso slug in URL for other grids.