sigtap - JSON tools: flatten JSON to dot paths, or convert JSON rows to CSV online
https://sigtap-outreach-api.sigtap.workers.dev/tools/json?data=testOverview
x402 USDC on Base - no signup, the wallet is the account. Free check: GET https://sigtap-outreach-api.sigtap.workers.dev/preview/tools/json returns a 200 sample. Paid call in 3 steps: GET https://sigtap-outreach-api.sigtap.workers.dev/tools/json?data=test -> 402 challenge (payTo+amount) -> sign and retry with the X-PAYMENT header (@x402/fetch does this) -> 200 + settled on-chain. Catalog + MCP twin: GET /llms.txt on this origin.
Protocol
x402
Price
$0.0010
Payment Asset
USDC
Payment Network
Base
Category
tools
Provider
sigtap
Source
self-registered
Indexed
2026-09-05 14:11:26
Health
Status
healthy
Latency (p50)
627ms
Uptime (30d)
100.0%
Reliability Score
90/100
Last Checked
2026-09-13 06:59:11
Last Healthy
2026-09-13 06:59:11
Consecutive Failures
0
x402 Payment Validation
Payment Requirements
Valid
Asset Verified
Known USDC
Facilitator
—
Recent Health Checks
| Time | Status | HTTP | Latency | Error |
|---|---|---|---|---|
| 2026-09-13 06:59:11 | healthy | 402 | 33ms | |
| 2026-09-13 00:53:06 | healthy | 402 | 6029ms | |
| 2026-09-12 17:41:43 | healthy | 402 | 627ms | |
| 2026-09-12 01:43:01 | healthy | 402 | 533ms | |
| 2026-09-11 10:26:09 | healthy | 402 | 6030ms | |
| 2026-09-10 23:07:35 | healthy | 402 | 490ms |