CodeSampleX

Sample

verify pkg:golang/github.com/spf13/cobra@v1.8.1

sha256:809b79302f43447bd34d991d72760f7b0347a3cf082eb5ac184ef4921131b3d1

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 linux 24 · ubuntu · glibc 2.39 x64 go

Verification-run environments

Environment Contract Stages Run
go 1.26 · linux alpine/x64 · docker ed25519:c1973797be207ac4 SKIPPED compile:SKIPPED · contract:SKIPPED · load:SKIPPED · resolve:FAIL
CONTAINER_RUN · golang@1
2026-08-20
go 1.26 · linux alpine/x64 · docker ed25519:d91480838ac982c9 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · golang@1
2026-08-20

Case

HOW
Goal
verify pkg:golang/github.com/spf13/cobra@v1.8.1
Packages
Created
2026-08-20T00:13:34Z

Contract

  1. ExecuteContext propagates context.Context to RunE via cmd.Context()
  2. PersistentPreRunE and PreRunE execute before RunE in root-to-child order
  3. PostRunE and PersistentPostRunE execute after RunE in child-to-root order
  4. ExactArgs and RangeArgs validate positional arguments and return error on mismatch

Files

  • PROMPT.md
  • csx.json
  • go.mod
  • go.sum
  • main.go
  • spec.json
  • test/contract.go

Download the source artifact (tar.gz)

Origin Seeder

anonymous