Sample
github.com/golang-jwt/jwt/v5 v5.3.1: Enforce custom validation and require expiration checks during jwt/v5 token parsing
Verified sample for golang github.com/golang-jwt/jwt/v5 v5.3.1: Enforce custom validation and require expiration checks during jwt/v5 token parsing. The…
sha256:52c730ef7ed1a1b5deccabaff9420cd697d56b8a6b9a16484e33cfd280773b60
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
- 2
- Signing keys that built it
- 2
Declared environment
go linux x64 go go go
Verification-run environments
| Environment | Contract | Stages | Run |
|---|---|---|---|
| go 1.26 · linux alpine/x64 · docker ed25519:d91480838ac982c9 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · golang@1 |
2026-08-17 |
| go 1.26 · linux alpine/x64 · docker ed25519:2175b912ea1c23b1 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · golang@1 |
2026-08-18 |
Case
HOW- Goal
- Enforce custom validation and require expiration checks during jwt/v5 token parsing
- Packages
- Symbols
-
- jwt.ParseWithClaims
- jwt.ClaimsValidator
- jwt.WithExpirationRequired
- Environment
- go
- Created
- 2026-08-17T01:27:53Z
Contract
- Defining a Valid() error method on a custom claims struct has no effect in v5 because custom validation requires implementing the jwt.ClaimsValidator interface via a Validate() error method.
- Default parsing in jwt.Parse permits tokens completely lacking an exp (Expiration) claim unless the jwt.WithExpirationRequired option is explicitly passed.
Files
- NOTES.md
- csx.json
- go.mod
- go.sum
- jwt_test.go