Show every model in the /model picker via gateway discovery - #9
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Background research (docs/research/2026-08-20-model-picker.md) found Claude
Code's supported mechanism: CLAUDE_CODE_ENABLE_GATEWAY_MODEL_DISCOVERY=1
fetches {base}/v1/models at startup and adds rows labeled "From gateway" —
keeping only ids containing claude|anthropic. So:
- Each GPT model gets a second alias, anthropic-compat/<id>, which passes the
filter with a readable name; the alias IS the inference mapping, so picking
the row just works.
- The launcher exports the discovery flag on the proxy route.
- claude-code.disable-cloaking-model-list: true in the proxy config —
without it CLIProxyAPI serves the picker REVERSED pseudo-claude ids
(claude-fable-5-dd-los-6.5-tpg), which is its own filter workaround and
reads as gibberish.
- That option needs a recent CLIProxyAPI, so the installer feature-detects it
on the binary (strings | grep) and upgrades/downloads when absent.
The feature gate initially failed on success: grep -q exits at first match,
strings dies of SIGPIPE, pipefail turns that into failure — the same class as
the json extractors. Guarded the same way, with a regression test.
Verified live on a fresh reinstall: 12 picker rows cached (4 claude +
8 anthropic-compat/gpt), inference on plain and prefixed ids, claude direct.
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Closes the last gap:
/modelinside a session now lists all 12 models.How (from primary-source research, checked into
docs/research/)Claude Code has a documented gateway-discovery mechanism:
CLAUDE_CODE_ENABLE_GATEWAY_MODEL_DISCOVERY=1makes it fetch{ANTHROPIC_BASE_URL}/v1/modelsat startup and add picker rows labeled"From gateway" — but a hard filter keeps only ids containing
claude/anthropic. Three pieces make GPT models pass it cleanly:anthropic-compat/<id>. The alias is the inference mapping, so picking therow routes to the real model — no strip logic anywhere.
claude-code.disable-cloaking-model-list: true: without it CLIProxyAPIapplies its own filter workaround and serves reversed pseudo-claude ids
(
claude-fable-5-dd-los-6.5-tpg— that'sgpt-5.6-solbackwards). Realdiscovery, gibberish picker.
it on the candidate binary (
strings | grep) and upgrades viabrew/release download when absent — never version-string parsing.
The bug the gate grew
strings | grep -qunderset -euo pipefailfails on SUCCESS: grep exits atthe first match, strings dies of SIGPIPE. Same class as the json extractors
in #4; same subshell guard, plus a regression test in
tests/extractors.sh.Verified live (fresh delete + reinstall)
~/.claude/cache/gateway-models.json)anthropic-compat/gpt-*--model gpt-5.6-sol(plain alias)--model anthropic-compat/gpt-5.4(picker row id)Research report with binary offsets and doc citations:
docs/research/2026-08-20-model-picker.md.