chat-adapter-github

GitHub adapter for chat-py. Python port of upstream packages/adapter-github.

Handles issue_comment and pull_request_review_comment webhooks; supports PAT, single-tenant GitHub App, and multi-tenant GitHub App auth.

Install

uv add chat-py chat-py-adapter-github chat-py-adapter-state-pg

Auth / config

Three discriminated config variants:

All variants additionally accept: webhookSecret (required for signature verify), botUserId, apiUrl, logger, userName.

Minimal example

from chat import Chat
from chat_adapter_github import create_github_adapter
from chat_adapter_state_pg import create_postgres_state

bot = Chat(
    user_name="mybot",
    adapters={"github": create_github_adapter(
        token="ghp_...",             # PAT mode
        webhookSecret="...",
    )},
    state=create_postgres_state(url="postgres://localhost/chat"),
)


@bot.on_new_mention
async def respond(thread, message):
    await thread.post("On it.")

Mount bot.handle_webhook("github", body, headers) under /api/webhooks/github. The handler verifies X-Hub-Signature-256 via verify_github_signature.

Thread ID

GitHub thread IDs encode {owner}/{repo}#{issue_or_pr_number}, optionally with a comment ID for review threads.

Features

• HMAC-SHA256 webhook signature verify (verify_github_signature)
• GFM markdown rendering via GitHubFormatConverter
• card_to_github_markdown / card_to_plain_text fallbacks (no native card support)
• Reactions (on_reaction) for issue comments and PR review comments

Parity notes

• No card or streaming support — GitHub comments are markdown-only. Cards degrade to GFM via card_to_github_markdown.
• Error wrapping (handle_github_error) maps GitHub REST errors to the shared AdapterError hierarchy.

Test

uv run pytest packages/chat-adapter-github

# Live
GITHUB_TOKEN=... uv run pytest packages/chat-integration-tests -k github

Upstream

https://github.com/vercel/chat/tree/main/packages/adapter-github