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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]

L402 Text Transformer

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

l402-text-transformer-2

Pay-per-request text transforms (uppercase, reverse, leetspeak, morse) over Lightning L402. Also agent tools at /api/tool: btc_price, sats_convert, sha256. Free discovery: GET /api/tools.

Satsback Agent API

[verified] [L402] [live] 21 sats/one-time [-----] (0)

satsback-agent-api

Cashback infrastructure for AI agents, settled in sats. Browse 25,000+ online retailers, generate affiliate-tracked links, and receive Bitcoin payouts straight to a Lightning address. Registration is one standard L402 dance: POST, pay 21 sats, POST again with the preimage. No signup, no API keys, no extra steps. Full MCP server support for agentic workflows.

#tools #finance

[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

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

AsterPay is the trust, discovery and EUR-settlement layer for AI agent commerce. This endpoint returns a real-time USDC to EUR settlement estimate (exchange rate, fee, and SEPA Instant delivery in under 10 seconds) - the only x402 endpoint that settles stablecoins to EUR fiat. AsterPay also provides a KYA Trust Score (Know Your Agent: ERC-8004 agent identity plus sanctions screening, scored 0-100) so agents can verify a counterparty before paying, and merchant discovery to resolve a company name to verified IBAN/BIC. x402 and MPP are accepted on every paid endpoint. Supports USDC, EURC and EURCV across Base, Ethereum, Arbitrum, Optimism and Polygon. Operated by AELIRA LTD (Cyprus).

#finance #identity

tako.com/api/mpp/v1/contents

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

tako-com-api-mpp-v1-contents

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

#search #storage

blockrun.ai/api/v1/images/image2image

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

blockrun-ai-api-v1-images-image2image

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

Ollama LLM Inference (L402)

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

ollama-llm-inference-l402

Pay-per-request LLM inference via Lightning micropayments. Supports llama3 (5 sats) and qwen2.5:14b (15 sats). Fully L402 spec-compliant - send Authorization: L402 <payment_hash>:<preimage> after paying the invoice.

Satring Search API

[verified] [L402+x402+MPP] [live] 100 sats/free [-----] (0)

satring-search-api

Full-text search across L402 and x402 service names and descriptions. Filter by protocol, status, category. Paginated results.

govlaws.ai/api/mpp/identity

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

govlaws-ai-api-mpp-identity

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

#identity #finance

www.x402scan.com/api/x402/registry/origin

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

www-x402scan-com-api-x402-registry-origin

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

Pre-Swap Token Safety — ERC-20 Risk Scanner

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

pre-swap-token-safety-erc-20-risk-scanner

lightningfaucet.com: /api/

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

lightningfaucet-com-api

lace your message on the public agent message board API endpoint: `POST https://lightningfaucet.com/api/` with JSON body `{"action": "...", "api_key": "..."}` --- ## MCP Server (Model Context Proto

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

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

tako-com-api-mpp-v1-search-fast

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

x402-gateway-production.up.railway.app/api/crypto/price

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

x402-gateway-production-up-railway-app-api-crypto-price

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.

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.

blockrun.ai/api/v1/videos/generations

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

blockrun-ai-api-v1-videos-generations

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

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

Semantic search for Telegram: search over 1M+ public channels, 170K+ public chats, 140K+ bots (continuously growing). Hybrid search using both vector embeddings and keywords with smart ranking. Search for similar channels/chats/bots by username. Receive from 100 to 1000 results depending on request. Docs: https://semagram.io/agent-api.md

#search #social

api.run402.com/tiers/v1/status

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

api-run402-com-tiers-v1-status

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

#identity #storage

Lightning Faucet Memory Bank

[L402] [live] 5 sats/per-request [*****] (1)

lightning-faucet-memory-bank

Persistent key-value storage for AI agents. Store, retrieve, query, delete data. 5-50 sats per op.

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