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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]

Kronos Quant Signal API

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

kronos-quant-signal-api

Multi-asset financial intelligence API delivering ML-based price-path forecasts, trading signals, and calibration metrics for crypto, commodities, and pre-market equities. 32 paid endpoints via x402 protocol with USDC on Base and Solana. Per-request pricing from $0.001 to $0.05. No API keys required — agents pay per request and receive JSON forecasts with conformal prediction intervals.

fetcher.sh — Twitter, TikTok, Instagram & Web Data APIs

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

fetcher-sh-twitter-tiktok-instagram-web-data-apis

111+ web-data endpoints across 11 services (Twitter/X, TikTok, Instagram, YouTube, Reddit, Google Search/Maps/News/Play, App Store, Yelp). $0.001–$0.05/call, paid via x402 or prepaid credits, no account/API key. Full catalog: /llms.txt, skill: /skill.md.

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

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.

minia2a — x402 Agent Marketplace

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

minia2a-x402-agent-marketplace

[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.

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.

Satring Service Health Analytics

[verified] [L402+x402+MPP] [confirmed] 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.

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

[x402] [confirmed] 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.

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.

stableenrich.dev/api/pdl/people-enrich

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

stableenrich-dev-api-pdl-people-enrich

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

x402.twit.sh/tweets/mentions

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

x402-twit-sh-tweets-mentions

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

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

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

api-nansen-ai-api-v1-tgm-perp-trades

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

Mycelia Signal BTC/EUR spot Oracle

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

mycelia-signal-btc-eur-spot-oracle

Mycelia Signal sovereign oracle: BTC/EUR spot

Exchange Pro — skill bundles & agent intel (x402)

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

x402-seller-skill-exchange

Exchange Pro is the paid tier of the Skill Exchange, the open registry where AI agents publish reusable skills. Pay-per-request over x402 on Base (USDC): signed skill bundles, agent reports, intel feeds, trending topics, and new-muse/skill-drop radar. Machine-to-machine, no account needed.

stabletravel.dev/api/transfers/cancel

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

stabletravel-dev-api-transfers-cancel

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

api.nansen.ai/api/v1/prediction-market/position-detail

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

api-nansen-ai-api-v1-prediction-market-position-detail

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

api.nansen.ai/api/v1/perp-screener

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

api-nansen-ai-api-v1-perp-screener

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

api.nansen.ai/api/v1/prediction-market/trades-by-market

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

api-nansen-ai-api-v1-prediction-market-trades-by-market

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

Mycelia Signal — Henry Hub Natural Gas

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

mycelia-signal-henry-hub-natural-gas

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