502 listings: 475 MCP servers, 27 paid HTTP APIs. 25 have a listed price (median $0.01, range $0.001 to $5.99); 7 have payment-verified usage, with 68 verified buyers (summed per service) and 791 settlements in the last 30 days.
| Listing | Price | Trust | Verified buyers 30d | Settlements 30d | Uptime 30d |
|---|---|---|---|---|---|
| GovEdge http_api Paid API for US federal contracting data: USASpending award records cross-referenced with vendor stock tickers, plus live SAM.gov solicitati | from $0.2 | 64 | 35 | 610 | 100% |
| M2M Sentinel http_api Deterministic Base mainnet transaction preflight and static bytecode capability evidence with PUSH-aware opcode analysis, proxy and EIP-7702 | from $0.005 | 51 | 12 | 46 | 99.4% |
| Would Pay Again — Ad Slot Booking http_api Would Pay Again is a newsletter about the machine-payments (x402) economy, produced by paying x402 endpoints. It sells its own ad inventory | from $0.2 | 49 | 12 | 91 | 100% |
| x402check http_api Live x402 conformance pre-flight check. Pass ?url=<x402 endpoint> and get a structured PASS/WARN/FAIL verdict on its HTTP 402 challenge — wi | from $0.002 | 34 | 5 | 17 | 100% |
| RootCrak Preflight http_api Before an agent pays or connects, it can buy a drainer + domain preflight over x402. Fail-closed. Signals, not a SAFE stamp. USDC on Base an | from $0.05 | 27 | 2 | 20 | 99.6% |
| RegEvidenceHub Taxi http_api Evidence-linked deterministic England taxi and private-hire licensing preflight and cross-authority comparison for agents, with live x402 pa | from $0.02 | 13 | 1 | 4 | 99.8% |
| FOXIFY Agent Transaction Preflight http_api Pay-per-call security preflight for autonomous-agent payment intents. Checks mandate, recipient, merchant, expiry and replay risk before exe | from $0.05 | 12 | 1 | 3 | 100% |
| Listing | Price | Trust | Verified buyers 30d | Settlements 30d | Uptime 30d |
|---|---|---|---|---|---|
| x402check http_api Live x402 conformance pre-flight check. Pass ?url=<x402 endpoint> and get a structured PASS/WARN/FAIL verdict on its HTTP 402 challenge — wi | from $0.002 | 34 | 5 | 17 | 100% |
| M2M Sentinel http_api Deterministic Base mainnet transaction preflight and static bytecode capability evidence with PUSH-aware opcode analysis, proxy and EIP-7702 | from $0.005 | 51 | 12 | 46 | 99.4% |
| RegEvidenceHub Taxi http_api Evidence-linked deterministic England taxi and private-hire licensing preflight and cross-authority comparison for agents, with live x402 pa | from $0.02 | 13 | 1 | 4 | 99.8% |
| RootCrak Preflight http_api Before an agent pays or connects, it can buy a drainer + domain preflight over x402. Fail-closed. Signals, not a SAFE stamp. USDC on Base an | from $0.05 | 27 | 2 | 20 | 99.6% |
| FOXIFY Agent Transaction Preflight http_api Pay-per-call security preflight for autonomous-agent payment intents. Checks mandate, recipient, merchant, expiry and replay risk before exe | from $0.05 | 12 | 1 | 3 | 100% |
| GovEdge http_api Paid API for US federal contracting data: USASpending award records cross-referenced with vendor stock tickers, plus live SAM.gov solicitati | from $0.2 | 64 | 35 | 610 | 100% |
| Would Pay Again — Ad Slot Booking http_api Would Pay Again is a newsletter about the machine-payments (x402) economy, produced by paying x402 endpoints. It sells its own ad inventory | from $0.2 | 49 | 12 | 91 | 100% |
Search all 502 travel listings · JSON: /api/v1/search?category=travel