Harden runtime env, tokens, control text and model content - #550
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davidmckayv merged 2 commits intoSep 15, 2026
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Supervisor passed whitespace-only COMPUTER_IMAGE/NETWORK/RUNTIME through to Docker and forwarded bad BROWSER_MODEs to crash the child; values are trimmed and modes fail fast. Whitespace COMPUTER_TOKEN is omitted instead of crashing the child at boot. Stream query tokens and Bearer remainders are trimmed like headers. Control reason/label are capped at 500 chars against poll amplification. Empty WORKSPACE_DIR falls back instead of ENOENT crash. Unparseable socket input gets an error frame. Model image parts are mime-allowlisted and base64-checked.
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September 15, 2026 09:29
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Code-verified clean; CI green on this sha.
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…564) The Unreleased changelog was missing several changes that landed since v0.0.11: the Composio connector (#481), the removal of a skill's grants when it is uninstalled (#563), and the request-validation sweep that answers a malformed request with a 400 rather than coercing it or letting it through (#543-#548, #550), including the one fail-open it closed. Added, each checked against the code. The README's Governed MCP bullet named only Google Drive and Notion; Composio brokers a few hundred more apps in the catalogue now, so it says so.
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Supervisor passed whitespace-only COMPUTER_IMAGE/NETWORK/RUNTIME through to Docker and forwarded bad BROWSER_MODEs to crash the child; values are trimmed and modes fail fast. Whitespace COMPUTER_TOKEN is omitted instead of crashing the child at boot. Stream query tokens and Bearer remainders are trimmed like headers. Control reason/label are capped at 500 chars against poll amplification. Empty WORKSPACE_DIR falls back instead of ENOENT crash. Unparseable socket input gets an error frame. Model image parts are mime-allowlisted and base64-checked.
Verified: bun test shared/user-content-hardening.test.ts (6 pass), supervisor tests/environment-hardening.test.ts + environment.test.ts (6 pass), agent-computer tests/runtime-hardening.test.ts + authorisation + control (45 pass). Biome lint and format clean.