Merge pull request #2367 from modelcontextprotocol/v2/feat/2294-skills-catalog-budget-settings

feat: make the skills verification catalog budget configurable per server (#2294)
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Cliff Hall 2026-09-14 01:40:52 -04:00 • committed by GitHub
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@ -391,7 +391,12 @@ not read has not been cleared of anything:
| Per skill, on the wire | 16 MiB actually served | The declared sizes are server-controlled; this one cannot be lied past. |
| Per run | 256 skills / 64 MiB | SEP-2640 bounds a skill and deliberately does not bound a *catalog*. Every entry costs at least one `resources/read`, so without this a large listing — hostile or merely big — is unbounded work against the tool inspecting it. |
The run bound is this tool's, not the spec's. A skill past it is still reported,
The run bound is this tool's, not the spec's, and it is configurable per server:
set `skillCatalogMaxSkills` / `skillCatalogMaxBytes` on the server's entry in
`mcp.json`, or edit them under **Skills** in the web client's Server Settings
(see [the configuration reference](../../docs/mcp-server-configuration.md)).
Both must be positive integers — there is no unlimited value, since the bound
is what makes the run terminate. A skill past it is still reported,
with its static conformance findings and an `incomplete` reason saying nothing
about its files was checked; verify it on its own with `--method skills/get
--uri <skill>` to get a verdict for it.