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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]

Lightning Faucet Mempool Heatmap

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

lightning-faucet-mempool-heatmap

Bitcoin mempool visualization data as a fee-rate heatmap. See pending transaction distribution. 30 sats.

Lightning Faucet Node Info

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

lightning-faucet-node-info

Query Lightning Network node info by pubkey. Returns alias, capacity, channels, and features. 30 sats.

Lightning Faucet Fee Estimate

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

lightning-faucet-fee-estimate

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

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

[x402] [live] 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.

Kronos Quant Signal API

[verified] [x402] [live] 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.

WebberSites Data & Tools API

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

minia2a-x402-agent-marketplace

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

[x402] [live] 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.

[x402] [live] 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.

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.

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

[x402] [live] 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.

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

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

api-nansen-ai-api-v1-tgm-perp-positions

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

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

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

api-nansen-ai-api-v1-tgm-dex-trades

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

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

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

api-nansen-ai-api-v1-profiler-perp-positions

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

api.nansen.ai/api/v1/profiler/address/related-wallets

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

api-nansen-ai-api-v1-profiler-address-related-wallets

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

api.nansen.ai/api/v1/profiler/address/transactions

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

api-nansen-ai-api-v1-profiler-address-transactions

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

api.nansen.ai/api/v1/smart-money/dex-trades

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

api-nansen-ai-api-v1-smart-money-dex-trades

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

agenthealthmonitor.xyz/ahs/route/policy

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

agenthealthmonitor-xyz-ahs-route-policy

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

#identity #data

agenthealthmonitor.xyz/ahs/batch

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

agenthealthmonitor-xyz-ahs-batch

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

#identity #data

tako.com/api/mpp/v1/search/deep

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

tako-com-api-mpp-v1-search-deep

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

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