LetterBox adds granular API key permissions, agents can create Drafts over MCP
rchardkovacs · x · 2026-11-03
LetterBox now supports granular API key permissions: when creating a key, you can set per-resource access (No access/Read/Create) across Drafts, Templates, Posts, Stats, and more, plus workspace scoping and expiry.
The first resource with write access is Drafts — agents can now create drafts over MCP, while edits and deletes remain disabled. The UI also lets you name keys (e.g. for Claude Code), reflecting a least-privilege approach to agent access.
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