sigtap - Crypto price API: BTC and ETH spot price from Coinbase with buy, sell and spread percent
https://sigtap-outreach-api.sigtap.workers.dev/tools/crypto-price?from=test&to=testOverview
x402 USDC on Base - no signup, the wallet is the account. Free check: GET https://sigtap-outreach-api.sigtap.workers.dev/preview/tools/crypto-price returns a 200 sample. Paid call in 3 steps: GET https://sigtap-outreach-api.sigtap.workers.dev/tools/crypto-price?from=test&to=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
$0.0020
Payment Asset
USDC
Payment Network
Base
Category
tools
Provider
sigtap
Source
self-registered
Indexed
2026-09-05 14:09:42
Health
Status
healthy
Latency (p50)
633ms
Uptime (30d)
100.0%
Reliability Score
87/100
Last Checked
2026-09-11 16:48:59
Last Healthy
2026-09-11 16:48:59
Consecutive Failures
0
x402 Payment Validation
Payment Requirements
Valid
Asset Verified
Known USDC
Facilitator
—
Recent Health Checks
| Time | Status | HTTP | Latency | Error |
|---|---|---|---|---|
| 2026-09-11 16:48:59 | healthy | 402 | 1004ms | |
| 2026-09-11 00:09:26 | healthy | 402 | 458ms | |
| 2026-09-10 09:21:08 | healthy | 402 | 6034ms | |
| 2026-09-10 05:25:09 | healthy | 402 | 633ms | |
| 2026-09-09 15:14:24 | healthy | 402 | 552ms | |
| 2026-09-09 12:47:31 | healthy | 402 | 720ms | |
| 2026-09-08 21:17:32 | healthy | 402 | 29ms |