Sample
verify pkg:npm/cors@2.8.6
sha256:967878c4e4e2dc3fcaea821e96b777ab8d21019aa36026307e3ae828601839fe
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… |
2026-08-26 |
Case
HOW- Goal
- verify pkg:npm/cors@2.8.6
- Packages
- Symbols
-
- cors
- Created
- 2026-08-26T08:54:13Z
Contract
- cors is exported as a function from cors package
- cors() sets default Access-Control-Allow-Origin to wildcard (*)
- cors({ origin: true }) reflects the request Origin header and appends Vary: Origin
- cors({ origin: [...] }) allows matching origin from allowed array and suppresses origin header for non-matching origins
- cors({ credentials: true }) sets Access-Control-Allow-Credentials to true
- cors handles OPTIONS preflight request by default with status 204, Content-Length 0, and configured methods/headers
- cors({ optionsSuccessStatus: 200 }) responds with status 200 for OPTIONS preflight requests
- cors supports dynamic options callback to determine configuration per request and forwards callback errors
Files
- PROMPT.md
- csx.json
- package-lock.json
- package.json
- spec.json
- src/index.js
- test/contract.mjs
Origin Seeder
anonymous