Curated Paid API Directory for AI Agents

Paid JSON API of the Agent Paywire library for AI agents: agent-payment protocols (L402, x402, MPP), Lightning, stablecoins, SDK security and release data. GET /v1/search?q=, /v1/digest, /v1/updates?since=, /v1/changes?since=: 100 sats via L402 (buys 100 credits valid 30 days) or 0.01 USDC on Base via x402 per call. POST /v1/verify (paid endpoint verification) 1000 sats / 1 USDC. POST /v1/check (402 conformance check, 2 free/day) 50 sats / 0.05 USDC. POST /v1/alerts (30-day signed webhooks) 2000 sats / 2 USDC. POST /v1/credits: 100 calls 800 sats / 0.80 USDC, 1000 calls 7000 sats / 7 USDC. Discovery: https://api.agentpaywire.com/.well-known/l402 and /.well-known/x402. Not investment advice.

Aggregate stats across all listed services: totals, averages, top-rated, protocol breakdown. Paywalled (500 sats / $0.25 USDC). Supports L402 and x402.

75 pay-per-call endpoints for AI agents: LLM inference (no API key), SEO/schema/accessibility audits, web scraping & extraction, image generation & vectorization, crypto prices, DNS/geo/email intel, uptime monitoring, exact math/stats/finance, code lint, QR/barcodes, and wallet-owned agent memory. Dual rail: USDC on Base (x402) on every 402; Bitcoin Lightning (L402) when you opt in with the X-Pay-With: l402 header. Catalogs: /.well-known/l402.json and /openapi.json. Human docs + live 2-sat demo: https://l402.webbersites.com

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.

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.

Export the full service directory as JSON in a single request. Paywalled (5000 sats / $2.50 USDC). Supports L402 and x402.

Detects large Bitcoin transactions in the mempool. Returns top whale TXs sorted by fee and vsize. Data from a full Bitcoin node.

Per-service health report: uptime percentage, avg latency, probe history. Paywalled (50 sats / $0.025 USDC). Supports L402 and x402.

Analyze text sentiment. Returns positive/negative/neutral score with confidence. 30 sats.

Predicts Bitcoin network congestion level and estimated wait times. Returns fee estimates for next block through this week.

₿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.

Real-time Bitcoin fee estimates for next block, 6 blocks, and 144 blocks. Data from a full Bitcoin node.

Returns the latest Bitcoin block data including hash, height, and transaction list. Data from a full Bitcoin node.

Real-time Bitcoin mempool statistics including size, bytes, and minimum fee rate. Data from a full Bitcoin node.

Read and submit ratings for any listed service. GET /:slug/ratings is free; POST is paywalled (10 sats / $0.01 USDC). Supports L402 and x402.

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.

Verify Bitcoin transactions, addresses, and invoices. Get fee estimates, block height, and BTC/USD price with Nostr-signed attestation. Real mainnet node. 21 sats/request via L402.