CodeSampleX

Sample

verify pkg:npm/statuses@2.0.2

sha256:207ceb8baf99f174968ccf244538bfad31eabc62475f03f98b12e9ed4ebcb29a

Publication state. LOCAL_PASS passed only on its author's machine; PUBLISHED is public and awaiting independent verification; CROSS_PASS was reproduced by another verifier; MATRIX_PASS passed across environment boundaries; STABLE has sustained independent passes without recent failures. Evidence strength. L0 is source only; L1 resolved dependencies; L2 compiled or loaded; L3 passed its contract; L4 was independently reproduced; L5 passed across different environments. MIT-0

Execution evidence

Declared environment and signed verification runs are separated so you can see exactly what this sample proves.

Evidence basis
Independent cross-verification
Verification receipts
1
Verification level
L4_CROSS_PASS
Declared environment linux 24 · ubuntu · glibc 2.39 x64 npm

Verification-run environments

Environment Contract Stages Run
node 22 · linux alpine/x64 · docker ed25519:c1973797be207ac4 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · node-typescript@1		 2026-08-20

Case

HOW
Goal
verify pkg:npm/statuses@2.0.2
Packages
Created
2026-08-20T13:54:19Z

Contract

  1. status(code) returns the canonical HTTP status message string (e.g. status(200) === 'OK')
  2. status(message) returns the HTTP status code for valid message strings case-insensitively (e.g. status('not found') === 404)
  3. status.message[code] maps numerical status codes to status message strings
  4. status.code[message] maps lowercase status message strings to numerical status codes
  5. status.codes lists all supported numeric HTTP status codes
  6. status.empty[code] identifies status codes with empty response bodies (e.g. 204, 304)
  7. status.redirect[code] identifies redirect status codes (e.g. 301, 302)
  8. status.retry[code] identifies retryable status codes (e.g. 503)
  9. status(invalid) throws an error for unknown status codes or messages

Files

  • PROMPT.md
  • csx.json
  • package-lock.json
  • package.json
  • spec.json
  • src/index.mjs
  • test/contract.mjs

Download the source artifact (tar.gz)

Origin Seeder

anonymous