CodeSampleX

Sample

verify pkg:npm/ws@8.21.0

sha256:aaeba7a0e737c9f4ea5d9338b954df8ea8ecfd3fe17caf83d0e9727284813075

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
2
Verification level
L4_CROSS_PASS
Declared environment node 22.23 linux 24 · ubuntu · glibc 2.39 x64 node 22.23 javascript npm 10

Verification-run environments

Environment Contract Stages Run
node 22 · linux alpine/x64 · docker ed25519:c1973797be207ac4 SKIPPED compile:SKIPPED · contract:SKIPPED · load:SKIPPED · resolve:FAIL
CONTAINER_RUN · node-typescript@1		 2026-08-20
node 22 · linux alpine/x64 · docker ed25519:d91480838ac982c9 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · node-typescript@1		 2026-08-20

Case

HOW
Goal
verify pkg:npm/ws@8.21.0
Packages
Environment
node 22.23.2
Created
2026-08-20T06:52:49Z

Contract

  1. WebSocketServer starts on an ephemeral port and accepts incoming WebSocket client connections
  2. WebSocket clients and server exchange UTF-8 text and binary buffer messages bidirectionally
  3. WebSocketServer broadcasts messages across all currently connected and open clients
  4. WebSocket client ping emits corresponding pong heartbeat response from the server
  5. WebSocket client and server close gracefully with specified status code and reason

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