 ___  __ _| |_ _ __(_)_ __   __ _
/ __|/ _` | __| '__| | '_ \ / _` |
\__ \ (_| | |_| |  | | | | | (_| |
|___/\__,_|\__|_|  |_|_| |_|\__, |
                             |___/

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]

[verified] [L402+MPP] [live] 21 sats/per-request [-----] (0)

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

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/

Satring Bulk Export

[verified] [L402+x402+MPP] [live] 5000 sats/per-request [-----] (0)

satring-bulk-export

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

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.

Satring Directory API

[verified] [L402+x402+MPP] [live] 100 sats/free [*****] (1)

satring-directory-api

L402 + x402 paid API directory. GET for paginated listing with category/protocol filters, detail by slug, and search. POST to submit new services (1000 sats / $0.50 USDC). PATCH to edit with token.

stabletravel.dev/api/reference/recommendations

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

stabletravel-dev-api-reference-recommendations

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

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.

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.

Kevros Governance Attest

[L402+x402+MPP] [live] 30 sats/per-request [-----] (0)

governance-taskhawktech-com-governance-attest

Tamper-evident audit trail for AI agents. Every action hash-chained into an append-only ledger with ML-DSA-87 (FIPS 204) on-chain plus SLH-DSA-256f (FIPS 205) witness-lane post-quantum block signatures. Independently verifiable. $0.02 per attestation. Current Lightning sats price is published by the live L402 challenge. US customers only pending export classification.

stabletravel.dev/api/flightaware/history/airports/id/flights/arrivals

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

stabletravel-dev-api-flightaware-history-airports-id-flights-arrivals

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

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.

Kevros Media Attest

[L402+x402+MPP] [live] 75 sats/per-request [-----] (0)

kevros-media-attest

Media attestation for AI agents. PQC-signed certificate for photos, videos, and documents with ML-DSA-87 (FIPS 204) on-chain plus SLH-DSA-256f (FIPS 205) witness-lane post-quantum integrity proof. Independently verifiable. $0.05 per attestation. Current Lightning sats price is published by the live L402 challenge. US customers only pending export classification.

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.

tako.com/api/mpp/v1/thinviz/create

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

tako-com-api-mpp-v1-thinviz-create

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

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.

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.

stabledomains.dev/api/domain/dns

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

stabledomains-dev-api-domain-dns

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

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.

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.

api.lightningenable.com/l402/proxy/sec-edgar

[L402+MPP] [live] 3 sats/per-request [-----] (0)

api-lightningenable-com-l402-proxy-sec-edgar

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

[< prev] page 1/4 [next >]