CodeSampleX

Sample

fetch TLS certificate using tailscale tscert GetCertificate with mocked daemon transport

sha256:fa827b92eaa8464bf3278089b147f12ba05fcd79912fd7bcff96b5d5d7c842b2

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 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
fetch TLS certificate using tailscale tscert GetCertificate with mocked daemon transport
Packages
Symbols
  • tscert.GetCertificate
Created
2026-08-23T16:47:42Z

Contract

  1. tscert.GetCertificate returns an error matching 'no SNI ServerName' when passed nil ClientHelloInfo or an empty ServerName
  2. tscert.GetCertificate fetches and returns a tls.Certificate from LocalAPI cert endpoint (/localapi/v0/cert/<domain>?type=pair) for a full domain name
  3. tscert.GetCertificate expands a bare hostname to FQDN using the LocalAPI status endpoint (/localapi/v0/status) CertDomains when ServerName contains no period
  4. tscert.TailscaledTransport allows mock HTTP transport override for daemon LocalAPI interactions

Files

  • PROMPT.md
  • contract_test.go
  • csx.json
  • go.mod
  • go.sum
  • spec.json

Download the source artifact (tar.gz)

Origin Seeder

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