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curated paid API directory for AI agents

₿ satring --list

Curated Paid API Directory for AI Agents

Discover paid APIs for your AI agents, via Lightning and USDC

cat> [all] [ai/ml] [data] [finance] [identity] [media] [search] [social] [storage] [tools]

filter> [all] [verified] [confirmed] [live] [down] [unknown]

proto> [all] [L402] [x402] [MPP]

sort> [popular] [newest] [top-rated] [cheapest] [most-reviewed]

WebberSites Data & Tools API

[verified] [L402+x402] [confirmed] 2 sats/per-request [-----] (0)

webbersites-data-tools-api

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

minia2a — x402 Agent Marketplace

[x402] [confirmed] 0 sats/per-request [-----] (0)

minia2a-x402-agent-marketplace

Satring Analytics

[verified] [L402+x402+MPP] [confirmed] 500 sats/per-request [*****] (1)

satring-analytics

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

Bitcoin Benji API

[verified] [L402] [confirmed] 10 sats/per-request [-----] (0)

bitcoin-benji-api

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) â zero third-party APIs, zero data leakage. 16 paid endpoints from 5-50 sats per call. Dramatically cheaper than alternatives.

[L402] [confirmed] 10 sats/per-request [-----] (0)

₿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.

Mycelia Signal — US 10Y-2Y Yield Curve

[x402] [live] 1000 sats/per-request [-----] (0)

mycelia-signal-us-10y-2y-yield-curve

Satring Service Health Analytics

[verified] [L402+x402+MPP] [live] 50 sats/per-request [-----] (0)

satring-service-health-analytics

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

Lightning Faucet Fee Estimate

[L402] [confirmed] 50 sats/per-request [*****] (1)

lightning-faucet-fee-estimate

Real-time Bitcoin on-chain fee estimates for multiple confirmation targets. 50 sats.

stabletravel.dev/api/transfers/cancel

[x402+MPP] [live] 0 sats/per-request [-----] (0)

stabletravel-dev-api-transfers-cancel

Added by scraper. Domain owners can authenticate for free to edit information.

Lightning Faucet Keyword Extraction

[L402] [live] 30 sats/per-request [*****] (1)

lightning-faucet-keyword-extraction

Extract keywords and key phrases from text. Returns ranked keywords with relevance scores. 30 sats.

Lightning Faucet Timestamp

[L402] [confirmed] 10 sats/per-request [*****] (1)

lightning-faucet-timestamp

Trusted high-precision timestamp with current Bitcoin block height. 10 sats.

Satring Ratings API

[verified] [L402+x402+MPP] [confirmed] 10 sats/per-request [-----] (0)

satring-ratings-api

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.

[x402] [confirmed] 0 sats/per-request [-----] (0)

Keyless pay-per-call API for AI agents: 316 endpoints across 95+ groups — patents & trademarks (USPTO), legal (CourtListener), government & economy (SEC EDGAR, Census, World Bank, Federal Register), finance/markets, science & medicine (arXiv, PubMed, ICD-10), vehicles & aviation (NHTSA), geo & weather (OpenStreetMap, NWS/NOAA, USGS), business registries (GLEIF LEI), sanctions screening (OFAC), cybersecurity (CVE/KEV/EPSS), and web/data utilities. No signup, no API key: pay per request in USDC on Base or Solana via x402. Machine-readable OpenAPI, llms.txt, JSON-LD, MCP server card.

U.S. Grid — ISO Price History

[L402] [confirmed] 10 sats/per-request [-----] (0)

u-s-grid-iso-price-history

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.

minifetch.com/api/v1/x402/run/seo-page-audit

[x402] [confirmed] 0 sats/per-request [-----] (0)

minifetch-com-api-v1-x402-run-seo-page-audit

Added by scraper. Domain owners can authenticate for free to edit information.

api.nansen.ai/api/v1/profiler/perp-trades

[x402] [live] 0 sats/per-request [-----] (0)

api-nansen-ai-api-v1-profiler-perp-trades

Added by scraper. Domain owners can authenticate for free to edit information.

stableenrich.dev/api/google-maps/solar/rgb-image

[x402+MPP] [confirmed] 0 sats/per-request [-----] (0)

stableenrich-dev-api-google-maps-solar-rgb-image

Added by scraper. Domain owners can authenticate for free to edit information.

tako.com/api/mpp/v1/visualize

[x402+MPP] [confirmed] 0 sats/per-request [-----] (0)

tako-com-api-mpp-v1-visualize

Added by scraper. Domain owners can authenticate for free to edit information.

Bitcoin Latest Block

[verified] [L402] [confirmed] 5 sats/per-request [-----] (0)

bitcoin-latest-block

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

stableenrich.dev/api/influencer/enrich-by-social

[x402+MPP] [confirmed] 0 sats/per-request [-----] (0)

stableenrich-dev-api-influencer-enrich-by-social

Added by scraper. Domain owners can authenticate for free to edit information.

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