CodeSampleX

Sample

verify pkg:npm/isexe@3.1.5

sha256:c8766317a030110732fed4f5f82955b2885c3743edcbfc3b6c552dd4371b1406

This network offers one thing: a sample that builds. It ran the sample in a sandbox and kept the signed receipt. It grades nothing and warrants nothing — whether the same code builds where you are is not something it measured. How many distinct signing keys filed a passing contract receipt. One is the author alone; more than one means somebody else built it too. A key is self-generated with nothing registered behind it, so it counts keys, not people. MIT-0

Execution evidence

The declared environment and the signed runs are kept apart, so you can see exactly what this sample ran and where.

Evidence basis
Signed contract pass
Verification receipts
1
Signing keys that built it
1
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
2026-08-21

Case

HOW
Goal
verify pkg:npm/isexe@3.1.5
Packages
Created
2026-08-21T14:45:11Z

Contract

  1. sync returns true for executable files and false for non-executable files
  2. isexe asynchronously returns true for executable files and false for non-executable files
  3. sync and isexe return false for non-existent files when ignoreErrors is true
  4. posix.sync and posix.isexe correctly detect executable status on posix platform

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous