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fix(hub): serve Codex models their tools in code mode - #124
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TheGreatAxios merged 2 commits intoNov 4, 2026
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Codex models are trained to reach tools through one exec tool that runs
JavaScript. Given plain function tools, GPT-6.1 Terra repeats its last
call with identical arguments until the doom-loop guard fails the run,
and writes placeholder arguments. The Codex adapter offers one exec tool
that declares every tool, under a JavaScript-safe alias of its name, on
a typed tools object rendered from its JSON schema. It replays past
calls as scripts and turns the one tools.<name>({...}) call a script
makes back into an ordinary tool call, so the reactor still gates,
audits and loop-checks it. Scripts are read, never run: the argument is
parsed with Bun.JSON5, and any other script, such as one with a
condition, loop or second call, becomes an exec call answered with the
rules.
A Codex script the hub cannot read reaches the transcript as an exec call whose result is "unknown tool: exec", which reads like a platform fault. The step is named as rewriting a tool call and its result says the assistant was asked to write it again.
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The Codex adapter serves Codex models their tools through one exec code tool and turns the call in each script back into an ordinary Interchange tool call; the transcript describes an unreadable script in plain words.
No findings.
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Triage: Pass No changes needed from you. A maintainer will review this pull request. Triage will approve, request review. |
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Summary
execcode tool that declares every tool on a typedtoolsobject rendered from its JSON schema, and replays past calls and their results as scripts.tools.<name>({...})call in a model's script reaches Interchange as an ordinary tool call, so approvals, audit and the doom-loop guard apply to it. Scripts are read, never run; arguments are parsed withBun.JSON5.Verification
bun run lint,format:check,typecheck,test(216 pass),pins:verifyandvendor:verifypass.request_approvalcalled throughexecstops at the approval gate before it runs, in 4 of 4 runs.Closes CL-12050