sigtap - Regex tester: test a regular expression - matches, groups, count and backtracking risk chec
https://sigtap-outreach-api.sigtap.workers.dev/tools/regexOverview
x402 USDC on Base - no signup, the wallet is the account. Free check: GET https://sigtap-outreach-api.sigtap.workers.dev/preview/tools/regex returns a 200 sample. Paid call in 3 steps: GET https://sigtap-outreach-api.sigtap.workers.dev/tools/regex -> 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 12:52:06
Health
Status
healthy
Latency (p50)
688ms
Uptime (30d)
100.0%
Reliability Score
90/100
Last Checked
2026-09-24 05:18:10
Last Healthy
2026-09-24 05:18:10
Consecutive Failures
0
x402 Payment Validation
Payment Requirements
Valid
Asset Verified
Known USDC
Facilitator
—
Recent Health Checks
| Time | Status | HTTP | Latency | Error |
|---|---|---|---|---|
| 2026-09-24 05:18:10 | healthy | 402 | 688ms | |
| 2026-09-23 23:38:17 | healthy | 402 | 6036ms | |
| 2026-09-23 14:30:37 | healthy | 402 | 931ms | |
| 2026-09-23 07:01:20 | healthy | 402 | 821ms | |
| 2026-09-23 01:08:47 | healthy | 402 | 7939ms | |
| 2026-09-22 14:44:32 | healthy | 402 | 680ms | |
| 2026-09-22 10:28:28 | healthy | 402 | 541ms | |
| 2026-09-22 03:49:24 | healthy | 402 | 618ms | |
| 2026-09-21 16:03:36 | healthy | 402 | 584ms |