chp-adapter-github

GitHub inspection as governed Capability Host Protocol capabilities. Read-only first slice: repositories, pull requests, issues, CI workflow runs, and PR reviews — each exposed as chp.adapters.github.<op> with a full execution evidence chain.

Built on the canonical chp-core adapter template (BaseAdapter + @capability), the same pattern as chp-adapter-mcp.

Install

pip install chp-adapter-github

Usage

from chp_core import LocalCapabilityHost, register_adapter
from chp_adapter_github import GitHubAdapter, GitHubConfig

host = LocalCapabilityHost()
register_adapter(host, GitHubAdapter(GitHubConfig()))  # token from GITHUB_TOKEN

pr = host.invoke("chp.adapters.github.get_pull_request", {
    "owner": "capabilityhostprotocol", "repo": "chp-core", "number": 1,
})
print(pr.data["state"], pr.data["mergeable_state"])

Capabilities (read-only)

Capability	Purpose
`chp.adapters.github.get_repo`	Repository metadata
`chp.adapters.github.list_pull_requests`	List PRs (state filter)
`chp.adapters.github.get_pull_request`	Single PR + merge/CI detail
`chp.adapters.github.list_issues`	List issues (PRs excluded)
`chp.adapters.github.get_issue`	Single issue
`chp.adapters.github.list_workflow_runs`	GitHub Actions CI status
`chp.adapters.github.list_pr_reviews`	Reviews on a PR

Each returns a curated projection — a capability, not a raw API mirror.

Auth

GitHubConfig.token (or the GITHUB_TOKEN / GH_TOKEN env var). A token is optional for public reads but raises the rate limit. The token is sent in the Authorization header and never appears in evidence payloads.

Design notes

A fresh httpx.AsyncClient is created per call: the host runs handlers via asyncio.run (a new loop per host.invoke), and an AsyncClient is loop-bound.
GitHubConfig.transport accepts an httpx transport (e.g. httpx.MockTransport) for tests — no network required.
Write operations (create issue, comment, etc.) are a deliberate later slice; they carry a higher risk tier and policy gates.

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