Go SDK for OpenSandbox (Lifecycle, Execd, Egress)

[AlexandrePh]

Summary

Implement a Go SDK for the three OpenSandbox OpenAPI specs: Lifecycle, Execd, and Egress.

Go SDK is listed on the 2026.03 roadmap. I'd like to pick this up and contribute it upstream.

Approach

• Use oapi-codegen for type-safe client generation from the existing spec files (specs/sandbox-lifecycle.yml, specs/execd-api.yaml, specs/egress-api.yaml)
• Follow the existing SDK directory pattern: sdks/sandbox/go/
• Zero runtime dependencies beyond stdlib + generated code
• SSE streaming support for Execd command/code execution endpoints
• Full coverage of all 3 specs (~23 endpoints)

Planned Structure

sdks/sandbox/go/
  opensandbox/
    api/
      lifecycle.go      # generated from sandbox-lifecycle.yml
      execd.go          # generated from execd-api.yaml
      egress.go         # generated from egress-api.yaml
    client.go           # high-level wrapper (SandboxClient)
    streaming.go        # SSE event handling
    client_test.go
  go.mod
  go.sum
  Makefile              # generate + test targets
  README.md

References

• Python SDK: sdks/sandbox/python/
• TypeScript SDK: sdks/sandbox/javascript/
• Related: [Feature] Support OpenAPI-based code generation for C# SDK and OSSFS volume support #346 (OpenAPI-based code generation for C# SDK)
• Related: SSE Resumption Between execd and SDKs #507 (SSE resumption between execd and SDKs)