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Contributing

Thanks for contributing to opencode-a2a.

This repository maintains an OpenCode A2A runtime. Changes should keep runtime behavior, Agent Card declarations, OpenAPI examples, and machine-readable extension contracts aligned.

Before You Start

  • Read README.md for project scope and user/operator paths.
  • Read docs/guide.md for runtime contracts and compatibility guidance.
  • Read SECURITY.md before changing auth, deployment, or secret handling.

Development Setup

Requirements:

  • Python 3.11, 3.12, or 3.13
  • uv
  • A reachable OpenCode runtime if you need end-to-end manual checks

Install dependencies:

uv sync --all-extras

Start OpenCode in one terminal:

opencode serve --hostname 127.0.0.1 --port 4096

Then start the A2A runtime in another terminal:

A2A_STATIC_AUTH_CREDENTIALS='[{"scheme":"bearer","token":"dev-token","principal":"automation"}]' \
OPENCODE_BASE_URL=http://127.0.0.1:4096 \
OPENCODE_WORKSPACE_ROOT=/abs/path/to/workspace \
uv run opencode-a2a serve

Validation

Run the default validation baseline before opening a PR:

bash ./scripts/doctor.sh

doctor.sh is the primary repository validation entrypoint. It currently runs locked-environment sync, dependency compatibility checks, pre-commit, mypy, pytest, the repository coverage gate, package build, and a built-wheel smoke test.

If you change shell scripts, also run bash -n on each modified script, for example:

bash -n scripts/doctor.sh
bash -n scripts/lint.sh

External interoperability experiments stay outside the default regression baseline. When you need to reproduce current official-tool behavior, run:

bash ./scripts/conformance.sh

Treat that output as investigation input. Do not fold it into doctor.sh or the default CI quality gate unless the repository explicitly decides to promote a specific experiment into a maintained policy.

If you change extension methods, extension metadata, or Agent Card/OpenAPI contract surfaces, also make sure the targeted contract checks stay green:

uv run pytest tests/contracts/test_extension_contract_consistency.py
uv run mypy src/opencode_a2a

Change Expectations

  • Keep code, comments, and docs in English.
  • Keep issue / PR discussion in Simplified Chinese when collaborating in this repository.
  • Do not drift Agent Card, OpenAPI examples, wire contract metadata, and runtime behavior.
  • Prefer additive, explicit compatibility changes over silent behavior changes.
  • Treat opencode.* surfaces as provider-private unless the repository already defines them as shared A2A contracts.

Git and PR Workflow

  • Branch from the latest main.
  • Use git fetch and git merge --ff-only to sync mainline.
  • Do not push directly to protected branches.
  • Link the relevant issue in commits and PR descriptions when applicable.
  • Open PRs as Draft by default when the change still needs review or iteration.

Release Recovery

Publish is the release workflow for tagged versions. It now supports both the normal tag-push path and explicit maintainer recovery runs.

  • Tag pushes still perform the full release flow: regression checks, artifact builds, PyPI publish, and GitHub Release sync.
  • Manual workflow_dispatch runs require a release_tag input so the workflow checks out and rebuilds the exact tagged revision instead of the current branch tip.
  • Manual workflow_dispatch runs default publish_to_pypi=false so the safest recovery path is to repair the GitHub Release without attempting a duplicate PyPI publish.
  • Set publish_to_pypi=true only when a maintainer intentionally needs the manual dispatch to publish artifacts to PyPI before syncing the GitHub Release.
  • GitHub Release sync is idempotent for the tagged release: it creates the release when missing and uploads only missing wheel/sdist assets.

If a release run publishes to PyPI successfully but fails while creating or uploading the GitHub Release, recover with a manual dispatch against the same tag and set publish_to_pypi=false.

Documentation

Update docs together with code whenever you change:

  • authentication or deployment behavior
  • extension contracts or compatibility expectations
  • user-facing request or response shapes
  • operational scripts

Keep usage details in docs/guide.md and compatibility-sensitive stability guidance in docs/compatibility.md.

When changing extension contracts, update src/opencode_a2a/contracts/extensions.py first and keep these generated/documented surfaces aligned:

  • Agent Card extension params
  • OpenAPI POST / extension metadata and examples
  • JSON-RPC notification behavior (204 No Content)