langchain/.github/PULL_REQUEST_TEMPLATE.md at add-metadata

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Mason Daugherty cb50fed2bb ci: bypass issue-link gate for trusted contributors (#35720 )

Bypass the issue-link requirement for external contributors who have
earned the `trusted-contributor` tier label (>=5 merged PRs). Previously
only PRs with the `internal` label skipped the gate, meaning repeat
contributors still had to link an approved issue on every PR. Also
includes minor template and linting tweaks for contributor experience.

## Changes
- Add `trusted-contributor` bypass to the `check-issue-link` job
condition in `require_issue_link.yml`, with a secondary live-label API
fetch inside the script to cover the race where the `external` labeled
event payload doesn't yet include the tier label
- Add a `bypass-trusted-contributor` job in `require_issue_link.yml`
that removes `missing-issue-link` and reopens the PR when the
`trusted-contributor` label arrives after enforcement has already closed
it
- Reorder steps in `tag-external-contributions.yml` so the tier label is
applied *before* the `external` label — eliminates the race window
entirely since `trusted-contributor` is already on the PR when the
downstream `labeled` event fires
- Switch the tier-label step from `GITHUB_TOKEN` to the app token so the
`trusted-contributor` labeled event propagates to downstream workflows
- Add `hotfix` to allowed PR title types in `pr_lint.yml`
- Promote the English language policy to a blockquote callout in issue
and PR templates; add a "do not begin work without assignment" note to
the feature request template

2026-03-10 12:01:07 -04:00

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Fixes #

Read the full contributing guidelines: https://docs.langchain.com/oss/python/contributing/overview

All contributions must be in English. See the language policy.

If you paste a large clearly AI generated description here your PR may be IGNORED or CLOSED!

Thank you for contributing to LangChain! Follow these steps to have your pull request considered as ready for review.

PR title: Should follow the format: TYPE(SCOPE): DESCRIPTION

Examples:
- fix(anthropic): resolve flag parsing error
- feat(core): add multi-tenant support
- test(openai): update API usage tests
Allowed TYPE and SCOPE values: https://github.com/langchain-ai/langchain/blob/master/.github/workflows/pr_lint.yml#L15-L33

PR description:

Write 1-2 sentences summarizing the change.
The Fixes #xx line at the top is required for external contributions — update the issue number and keep the keyword. This links your PR to the approved issue and auto-closes it on merge.
If there are any breaking changes, please clearly describe them.
If this PR depends on another PR being merged first, please include "Depends on #PR_NUMBER" in the description.

Run make format, make lint and make test from the root of the package(s) you've modified.

We will not consider a PR unless these three are passing in CI.

How did you verify your code works?

Additional guidelines:

All external PRs must link to an issue or discussion where a solution has been approved by a maintainer, and you must be assigned to that issue. PRs without prior approval will be closed.
PRs should not touch more than one package unless absolutely necessary.
Do not update the uv.lock files or add dependencies to pyproject.toml files (even optional ones) unless you have explicit permission to do so by a maintainer.

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