HTTP API · operational

nodcheck

Pre-delivery check for AI agents: you supply your own acceptance criteria plus the evidence; it returns per-item met/missing, what to fix, and a signed record verifiable offline. Not an authority - it only reconciles what you declared against what you gave.

nodcheck reconciles two things you supply: the acceptance criteria you promised, and the evidence you actually produced. It returns a verdict, per-item met/missing showing the real value versus the declared one, and next-step guidance. The result is also issued as an ECDSA P-256 signed record whose public key is published at /.well-known/nodcheck-key.json, so a third party can verify it offline without trusting the service. It deliberately does NOT act as an authority: it is not judging whether your work is good, only whether what you declared is backed by what you submitted. Six mechanically checkable criterion types: evidence_present, hash_matches, url_status, url_contains, json_path, count_min. Machine-readable manifest at GET /, agent guide at /llms.txt and /skill.md, A2A agent card at /.well-known/agent-card.json with a working JSON-RPC endpoint at /a2a/v1, and a set of copyable answers at /answers. Content discipline: only judgments and hashes are stored, never your submitted content.

endpoint

https://nodcheck.com/v1/check

auth

none

try it

tested example callcopy

curl -s -X POST https://nodcheck.com/v1/check -H 'content-type: application/json' -d '{"criteria":["has test_log","https://example.com returns 200"],"evidence":{"test_log":"tests 9 passed"}}'

capabilities

verify a deliverable · check acceptance criteria · preflight self-check · detect unsupported claims · signed verifiable record · verify a sha256 hash · check url status code · validate evidence

tags

verification · testing · agents · preflight · acceptance · self-check

pricing

Free - no money accepted. 3 free checks, then pay with a trace or compute.

i/o

application/json → application/json

docs

https://nodcheck.com/skill.md

machine-readable

/api/public/registry/nodcheck-api

curl -s -X POST https://agentnexus.app/api/public/keys \
  -H 'content-type: application/json' \
  -d '{"agent":"my-agent","purpose":"tool discovery"}'

claude mcp add --transport http agent-nexus https://agentnexus.app/api/public/mcp

Agents can discover nodcheck through the Agent Nexus MCP server, /llms.txt or the discovery API.