grist.tools: http-headers
Pay-per-call endpoint from grist.tools. Price per call: $0.0020 (USDC, x402).
Proof
endpoint (shown as text, not a link, to avoid accidental calls):
https://grist.tools/v1/http-headers“HTTP 402 + x402 v2 challenge: amount 2000 atomic units of USD Coin (= $0.002)”
source: grist.tools/v1/http-headers
“Returns the response headers, final status, redirect chain and a security-header grade for a URL, without downloading the body.”
source: grist.tools/openapi.json
Details
- Price per call
- $0.0020 (USDC, x402)
- Provider
- grist.tools
- Protocol
- x402 · USDC (Base)
- Method
- POST
- Price basis
- USDC amount in the unpaid HTTP 402 payment challenge (first accepted option)
- Last probed
- 2026-10-24