CodeSampleX

Sample

Encode and decode logfmt formatted key-value pairs

sha256:92d59914b0ae1aabab59a799aac9c24e15da6bd593c29adac29f8be1d74830ca

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 go 1.26 linux 24 · ubuntu · glibc 2.39 x64 go 1.26 go go

Verification-run environments

Environment Contract Stages Run
go 1.26 · linux alpine/x64 · docker ed25519:c1973797be207ac4 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · golang@1golang:1.26-alpine@sha256:28d89ee9cc0f…
2026-08-23

Case

HOW
Goal
Encode and decode logfmt formatted key-value pairs
Packages
Symbols
  • Decoder.ScanRecord
  • Encoder.EncodeKeyval
  • NewDecoder
  • NewEncoder
Environment
go 1.26
Created
2026-08-23T17:37:15Z

Contract

  1. NewEncoder formats key-value pairs and ends record with newline
  2. NewDecoder scans logfmt records and extracts keys and values
  3. Round-trip encoding and decoding through sample helpers

Files

  • PROMPT.md
  • csx.json
  • go.mod
  • go.sum
  • logfmt.go
  • spec.json
  • test/contract_test.go

Download the source artifact (tar.gz)

Origin Seeder

anonymous