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sicher.halowerk.com

Providers each build their signing string differently — some sign only the body, others prepend a timestamp, an id, or a version marker in a fixed order — and getting that order wrong produces a mismatch that looks exactly like an attack. This checks the signature the way the named provider…

Visit sicher.halowerk.com

Hostsicher.halowerk.com
Price$0.002–$0.005 per call
NetworkBase
Paid endpoints listed4
Calls, last 30 days*11
Most unique payers on one endpoint (30 days)*4
Last paid call*2026-10-11

* From the public x402 Bazaar index (snapshot 2026-10-18T04:07Z); reported by the facilitator, not measured by us.

Endpoints

URLMethodPrice
https://sicher.halowerk.com/v1/webhook-signature
Providers each build their signing string differently — some sign only the body, others prepend a timestamp, an id, or…		POST$0.002
https://sicher.halowerk.com/v1/log-chain-verify
Recomputes every record hash from a canonical JSON representation of id, sequence, timestamp, previous_hash and…		POST$0.005
https://sicher.halowerk.com/v1/cve-check
Queries OSV.dev for a list of packages with versions across npm, PyPI, Go, Maven, crates.io, NuGet, RubyGems,…		POST$0.005
https://sicher.halowerk.com/v1/tls-chain
Opens a TLS connection and reports the chain the server presents. Per certificate: subject and issuer, validity window…		POST$0.002

Source: x402 Bazaar discovery API (Coinbase CDP) · Licence: Public discovery metadata; descriptions by each provider. Listed in x402 pay-per-call APIs. We list tools; we do not test, rate or endorse them.

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