Summary

• slack_set_status declared status as required: true / user-or-llm, so the shared required-param validator (tools/utils.ts) treated an empty string as missing and threw "Status is required for Slack Set Assistant Status" — the empty-string-clear path documented in the tool's own description could never reach Slack
• Made status non-required so an omitted or empty value passes validation. The request body builder already sends status: params.status ?? '', and Slack's assistant.threads.setStatus treats an empty status as "clear the status indicator"
• Updated the param description and SlackSetStatusParams.status to match
• Left the generic validator alone — empty-string-is-missing is correct for other tools; the fix is scoping this one param as optional. The Slack block's status subblock was already required: false

Note: the docs row in apps/docs/content/docs/en/integrations/slack.mdx is generated, but bun run generate-docs currently produces a broken result locally (truncates slack.mdx from 1873 to 15 lines, drops all MANUAL-CONTENT blocks, deletes the 13 *-service-account.mdx pages, and rewrites ~15 unrelated integration pages). I reverted that and hand-applied only the single table row a correct regen would emit. The generator looks like it is running against an incomplete registry — worth a separate look.

Type of Change

• Bug fix

Testing

bun run type-check clean. vitest run tools/utils.test.ts serializer/tests/dual-validation.test.ts — 40 passed. bun run lint and bun run check:api-validation:strict pass.

Checklist

• Code follows project style guidelines
• Self-reviewed my changes
• Tests added/updated and passing
• No new warnings introduced
• I confirm that I have read and agree to the terms outlined in the Contributor License Agreement (CLA)