> ## Documentation Index
> Fetch the complete documentation index at: https://docs.optimism.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Tools & SDKs Listing Criteria

> What a tool or SDK must meet to be listed on the support matrix, the removal rule, and the maintenance sweep that keeps listings accurate.

This page governs the [Tools & SDKs support matrix](/app-developers/tools-sdks/support-matrix).
It exists so that adding or removing a listing is the application of written
policy, not a per-pull-request argument. The approach follows the
[ethereum.org product-listing policy](https://ethereum.org/en/contributing/adding-products/),
which uses published criteria plus a standing removal rule for the same reason.

Listings must also satisfy the site-wide
[content guide](/op-stack/contribute/content-guide): the matrix is a routing
page (clause 3 of the three-clause test), so every listing links one canonical
documentation home and restates nothing.

## Listing Criteria

A tool or SDK is eligible for the matrix only if **all** of the following hold:

1. **Open source, public repository.** The source is publicly available and
   the repository is linkable from the matrix.
2. **Works with the OP Stack as documented.** A developer can follow the
   tool's own quickstart against an OP Stack chain and succeed. Listings for
   tools that only incidentally support the OP Stack must link the
   OP-Stack-relevant entry point, not a generic homepage.
3. **Actively maintained.** The project ships releases and responds to
   issues. An archived or visibly abandoned repository is disqualifying.
4. **Has one canonical documentation home.** There is a single place we can
   link as the source of truth (per the content guide's dual-sourcing ban we
   will not maintain a copy of its documentation here).
5. **Honest support status.** The listing's support status must match what
   the owner declares in its own repository or docs. Experimental or preview
   software is listed as such, never as production.
6. **Third-party listings are marked.** Any listing not owned by the Optimism
   Collective passes through the `<ThirdPartyContent>` component, per the
   [content guide](/op-stack/contribute/content-guide).

## Proposing a Listing

Open a pull request against the
[matrix page](/app-developers/tools-sdks/support-matrix) that adds one row and,
in the PR description, states how the tool meets each criterion above — with
links as evidence (repository, docs home, release page, the owner's own status
declaration). Reviewers apply this page; if a criterion is unclear, the fix is
a PR to this page, not an exception.

## Removal Rule

A listing is removed — not left stale — when it no longer meets the criteria.
Typical triggers:

* The repository is archived, or releases and issue activity have stopped.
* The documented quickstart no longer works against an OP Stack chain.
* The canonical docs home is gone or no longer maintained.
* The owner's declared status changed and the listing was not updated
  (in that case, update the row instead if the tool still qualifies).

Removal is an ordinary pull request that cites the failed criterion. Rows are
never soft-deprecated in place: the ethereum.org experience this policy is
modeled on shows that stale curated tables are worse than absent ones.

## Maintenance Sweep

Curated listings rot silently, so accuracy is maintained by a scheduled sweep
rather than by hoping readers report drift:

* **What is checked.** Every sweep re-verifies all four cells of every row —
  purpose, owner, canonical docs link, and support status — against the
  upstream repository and docs, and re-checks each criterion above.
* **What is recorded.** The sweep PR (or its "no changes" note) lists what
  was checked and the upstream sources consulted, so the next sweep starts
  from evidence.
* **Who runs it.** The docs maintainers own the sweep as part of the
  standing docs review rotation; anyone may run one ahead of schedule by
  opening the same kind of PR.
* **Outcome.** Each row is updated, confirmed, or removed under the
  removal rule. A sweep that cannot verify a row treats it as failing.

## Next Steps

* Browse the [Tools & SDKs support matrix](/app-developers/tools-sdks/support-matrix).
* Read the [content guide](/op-stack/contribute/content-guide) for the
  site-wide rules this policy inherits.