sigtap - JSON tools: flatten JSON to dot paths, or convert JSON rows to CSV online
https://sigtap-outreach-api.sigtap.workers.dev/tools/jsonOverview
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 -> 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 12:52:02
Health
Status
healthy
Latency (p50)
655ms
Uptime (30d)
100.0%
Reliability Score
87/100
Last Checked
2026-09-09 19:15:37
Last Healthy
2026-09-09 19:15:37
Consecutive Failures
0
x402 Payment Validation
Payment Requirements
Valid
Asset Verified
Known USDC
Facilitator
—
Recent Health Checks
| Time | Status | HTTP | Latency | Error |
|---|---|---|---|---|
| 2026-09-09 19:15:37 | healthy | 402 | 78ms | |
| 2026-09-09 12:58:28 | healthy | 402 | 653ms | |
| 2026-09-09 03:15:18 | healthy | 402 | 6032ms | |
| 2026-09-08 11:09:47 | healthy | 402 | 1083ms | |
| 2026-09-08 04:29:04 | healthy | 402 | 626ms | |
| 2026-09-07 18:05:30 | healthy | 402 | 719ms | |
| 2026-09-07 13:26:30 | healthy | 402 | 1190ms | |
| 2026-09-06 22:21:43 | healthy | 402 | 545ms | |
| 2026-09-06 19:23:50 | healthy | 402 | 655ms |