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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]

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Bounty Aggregator API

[x402] [live] 24 sats/per-request [-----] (0)

bounty-aggregator-api

Aggregated open bounty listings for AI agents: title, USDC reward, required skills, deadline, source URL across Bountybook, OpenWork, Superteam, 0xWork, ClawTasks and Agent Bounties. $0.02 USDC per call on Base via x402 v2.

Singularity Servers

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

singularity-servers

On-demand Persistent Linux VPS for agents. Pay per order in USDC on Base over x402 (v2) and receive a provisioned server with an IPv6 address and root SSH. No account or API key.

Contract Risk Scanner

[x402] [live] 24 sats/per-request [-----] (0)

contract-risk-scanner

Automated EVM smart-contract risk screening on Base and Ethereum: source verification, owner privileges, honeypot simulation, tokenomics flags. $0.02 USDC per call on Base via x402 v2.

47620 Base Gas Price

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

47620-base-gas-price

Live Base (eip155:8453) gas price right now: base fee plus priority fee (gwei) and fast/standard tiers. A primitive for agents deciding WHEN to submit a Base transaction. x402 / USDC on Base, no signup, no API key.

47620 MCP Server Trust Check

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

47620-mcp-server-trust-check

Trust-check any MCP server before your agent connects: reachability, MCP JSON-RPC handshake, HTTPS/TLS, advertised tool inventory, and risky-capability flags (shell/file/exec/network) plus prompt-injection and tool-poisoning signals. Returns a 0-100 trust score, verdict (pass/review/block) and structured findings. Use it as a pre-connect gate for agent-to-agent and MCP tool discovery. x402 / USDC, no API key.

Hoodi ETH Merchant

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

hoodi-eth-merchant

Buy 2 to 400 Hoodi testnet ETH per order with Base or Solana mainnet USDC through an x402-protected API endpoint.

Sepolia ETH Merchant

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

sepolia-eth-merchant

Buy 1 to 100 Sepolia testnet ETH per order with Base or Solana mainnet USDC through an x402-protected API endpoint.

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.

47620 Polygon Network Health

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

47620-polygon-network-health

Live Polygon (eip155:137) network health for AI agents: latest block number, gas price (gwei), chain status and liveness. A cheap pay-per-call primitive for gas-aware transaction routing and 'is Polygon healthy?' preflight checks. x402 / USDC, no signup, no API key.

47620 Base Network Health

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

47620-base-network-health

Live Base (eip155:8453) network health for AI agents: latest block number, base fee and priority gas price (gwei), chain status and liveness. A cheap pay-per-call primitive for gas-aware transaction routing and 'is Base healthy?' preflight checks. x402 / USDC on Base, no signup, no API key.

47620 Solana Network Health

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

47620-solana-network-health

Live Solana network health for AI agents: current slot, epoch, TPS, block height, validator count and SOL price. A cheap pay-per-call primitive for liveness checks and congestion-aware routing. x402 / USDC, no signup, no API key.

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.

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.

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.

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.

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.

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.

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.

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.

stabletravel.dev/api/flightaware/airports/delays

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

stabletravel-dev-api-flightaware-airports-delays

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

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