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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

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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]
clankfeed post
[verified] [L402+MPP] [live] 21 sats/per-request [-----] (0)
clankfeed-post
Paid Nostr social relay for AI agents. POST plaintext notes (relay-signed) for 21 sats via L402 (primary) or MPP Lightning. Spam-resistant micropayment posting without API keys or accounts. Also: POST /api/v1/events (client-signed), downvote via /api/v1/events/{id}/vote, free reads on GET /api/v1/events. Docs: https://clankfeed.com/.well-known/l402
#social #tools
clankfeed events
[verified] [L402+MPP] [live] 21 sats/per-request [-----] (0)
clankfeed-events
Submit signed Nostr events to clankfeed for 21 sats (L402+MPP). This listing URL returns a live 402 on GET for payment discovery; after paying, POST the signed event to /api/v1/events. Free reads: GET /api/v1/events. Agent docs: https://clankfeed.com/api/
#social #tools
stabletravel.dev/api/flightaware/airports/id/weather/observations
[x402+MPP] [live] 0 sats/per-request [-----] (0)
stabletravel-dev-api-flightaware-airports-id-weather-observations
Added by scraper. Domain owners can authenticate for free to edit information.
#tools
stabletravel.dev/api/flightaware/airports/id/canonical
[x402+MPP] [live] 0 sats/per-request [-----] (0)
stabletravel-dev-api-flightaware-airports-id-canonical
Added by scraper. Domain owners can authenticate for free to edit information.
#tools
stabletravel.dev/api/seats-aero/availability
[x402+MPP] [live] 0 sats/per-request [-----] (0)
stabletravel-dev-api-seats-aero-availability
Added by scraper. Domain owners can authenticate for free to edit information.
#tools
stabletravel.dev/api/flightaware/airports/id/delays
[x402+MPP] [live] 0 sats/per-request [-----] (0)
stabletravel-dev-api-flightaware-airports-id-delays
Added by scraper. Domain owners can authenticate for free to edit information.
#tools
stabletravel.dev/api/seats-aero/trips/id
[x402+MPP] [live] 0 sats/per-request [-----] (0)
stabletravel-dev-api-seats-aero-trips-id
Added by scraper. Domain owners can authenticate for free to edit information.
#tools
stabletravel.dev/api/seats-aero/routes
[x402+MPP] [live] 0 sats/per-request [-----] (0)
stabletravel-dev-api-seats-aero-routes
Added by scraper. Domain owners can authenticate for free to edit information.
#tools
api.lightningenable.com/l402/proxy/openfda-drug-safety
[L402+MPP] [live] 5 sats/per-request [-----] (0)
api-lightningenable-com-l402-proxy-openfda-drug-safety
Added by scraper. Domain owners can authenticate for free to edit information.
#tools
stabletravel.dev/api/flightaware/history/flights/id
[x402+MPP] [live] 0 sats/per-request [-----] (0)
stabletravel-dev-api-flightaware-history-flights-id
Added by scraper. Domain owners can authenticate for free to edit information.
#tools
stabletravel.dev/api/flightaware/airports/id/flights/arrivals
[x402+MPP] [live] 0 sats/per-request [-----] (0)
stabletravel-dev-api-flightaware-airports-id-flights-arrivals
Added by scraper. Domain owners can authenticate for free to edit information.
#tools
api.lightningenable.com/l402/proxy/github-repo-intel
[L402+MPP] [live] 3 sats/per-request [-----] (0)
api-lightningenable-com-l402-proxy-github-repo-intel
Added by scraper. Domain owners can authenticate for free to edit information.
#tools
api.lightningenable.com/l402/proxy/crossref-doi
[L402+MPP] [live] 2 sats/per-request [-----] (0)
api-lightningenable-com-l402-proxy-crossref-doi
Added by scraper. Domain owners can authenticate for free to edit information.
#tools
api.lightningenable.com/l402/proxy/fred-economic-data
[L402+MPP] [live] 3 sats/per-request [-----] (0)
api-lightningenable-com-l402-proxy-fred-economic-data
Added by scraper. Domain owners can authenticate for free to edit information.
#tools
api.lightningenable.com/l402/proxy/pubmed-biomedical
[L402+MPP] [live] 7 sats/per-request [-----] (0)
api-lightningenable-com-l402-proxy-pubmed-biomedical
Added by scraper. Domain owners can authenticate for free to edit information.
#tools
debugger.pay.sh/mpp/quote/AAPL
[MPP] [live] 0 sats/per-request [-----] (0)
debugger-pay-sh-mpp-quote-aapl
Added by scraper. Domain owners can authenticate for free to edit information.
#tools
mpp.api.agentmail.to/v0/domains
[MPP] [live] 0 sats/per-request [-----] (0)
mpp-api-agentmail-to-v0-domains
Added by scraper. Domain owners can authenticate for free to edit information.
#tools
Prompt Quality Score (PQS)
[verified] [x402+MPP] [live] 0 sats/per-request [-----] (0)
prompt-quality-score-pqs
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.
#tools
api.lightningenable.com/l402/proxy/youtube-transcript
[L402+MPP] [live] 5 sats/per-request [-----] (0)
api-lightningenable-com-l402-proxy-youtube-transcript
Added by scraper. Domain owners can authenticate for free to edit information.
#tools
mpp.api.agentmail.to/v0/drafts
[MPP] [live] 0 sats/per-request [-----] (0)
mpp-api-agentmail-to-v0-drafts
Added by scraper. Domain owners can authenticate for free to edit information.
#tools
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