CodeSampleX

Sample

verify express.urlencoded in pkg:npm/express@5.1.0

sha256:6315d6c03276ac54cf592b240be3e3b34102e99c511c9e39ee783c2aaebf066f

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@1node:22-alpine@sha256:c610fcdfb1d5…		 2026-08-23

Case

HOW
Goal
verify express.urlencoded in pkg:npm/express@5.1.0
Packages
Symbols
  • express.urlencoded
Created
2026-08-23T04:36:14Z

Contract

  1. express.urlencoded({ extended: false }) parses flat URL-encoded form data into req.body key-value pairs
  2. express.urlencoded({ extended: true }) parses nested URL-encoded form data into nested objects and arrays
  3. express.urlencoded({ limit }) rejects payloads exceeding the byte limit with a 413 entity.too.large status
  4. express.urlencoded() ignores requests with unmatched Content-Type headers leaving req.body untouched
  5. express.urlencoded() parses an empty URL-encoded request body into an empty object
  6. express.urlencoded({ type }) parses URL-encoded bodies matching a custom Content-Type header

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous