Return the certification record for ONE DeepSeek Harness plugin repository, identified by its GitHub owner and repository name: the letter grade, the snapshot date the grade was measured, and the five-dimension evidence behind it. Use this when you already know which plugin you are asking about and need its grade, or the reasoning that produced it. Use list_certified instead to enumerate every certified plugin, and certification_spec instead to learn what the five dimensions, the grade scale and the veto rule mean. Read-only: it reads a registry snapshot bundled with this server. When the public registry is reachable the snapshot may be refreshed opportunistically; otherwise the embedded snapshot is used. It performs no writes, contacts no service other than that optional refresh, and requires no credentials. Two calls with the same arguments return the same record. If the registry holds no entry for that owner/repo, the result is a plain not-found sentence naming the key it looked up and the snapshot date - it never invents, interpolates or approximates a grade.

List every plugin in the public dsh-plugin-certification registry, each with its repository, letter grade and snapshot date, plus the registry spec version, its generation timestamp and the total count. The returned coverage object states what that count is and is not: the registry is an opt-in subset of the ecosystem (a plugin appears only after it was evaluated), so a short list — the bundled snapshot holds one entry — is not evidence that the ecosystem is uncertified, and a single-entry list supports no comparison across plugins. Read coverage before drawing any conclusion from count. Use this to discover what is in the registry, or to compare grades across plugins. Use get_certification instead when you already know the plugin and want its full five-dimension evidence; this tool returns the summary row only. Read-only: it reads the embedded registry snapshot (optionally refreshed from the public registry when reachable), takes no parameters, performs no writes and needs no credentials. Repeated calls are identical until the snapshot is refreshed.

Return the dsh-plugin-certification specification document, version 1: the five graded dimensions, the grade scale from A to F, and the veto rule that can override a grade. Use this to interpret a grade you have already read - for example to learn why a record was vetoed, or what a dimension actually measures. Use list_certified or get_certification instead when you want a specific plugin's data rather than the rules behind it. Read-only: the document is compiled into the server, takes no parameters, performs no writes and needs no credentials. The same document is returned on every call.