fix: allow slash custom model IDs and live Cloudflare Workers AI search - #1793
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Included review availability: Your plan includes up to 10 reviews per rolling hour; 7 remain after this review. 📝 WalkthroughWalkthroughCustom model IDs now support ChangesCustom model management and validation
Estimated code review effort: 3 (Moderate) | ~25 minutes Merge Risk: ⚪ Minimal · up to The PR enables slash-containing custom model IDs and corrects live Cloudflare Workers AI discovery behavior; no actionable merge-blocking risk remains after normal checks and review. Sequence Diagram(s)sequenceDiagram
participant ModelsCLI
participant Config
participant knownModelIdsForProvider
participant decodeRoutedModelIdOrThrow
ModelsCLI->>Config: store or remove a routed model selector
decodeRoutedModelIdOrThrow->>knownModelIdsForProvider: collect provider, default, custom, and discovered IDs
knownModelIdsForProvider-->>decodeRoutedModelIdOrThrow: return known model IDs
decodeRoutedModelIdOrThrow-->>ModelsCLI: return one ID or reject an ambiguous match
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The live dashboard capture is ready locally (Cloudflare Workers AI → Models → Add custom model, |
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Inline comments:
In `@src/cli/models.ts`:
- Line 9: Update the custom-model selector logic around slugEquals to collect
every matching index instead of using findIndex; reject ambiguous selectors when
multiple models match and require the custom model UUID, while preserving
single-match behavior. Add a regression test in cli-models tests covering the
collision between the raw model ID openai-gpt-5.5 and encoded openai/gpt-5.5.
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📒 Files selected for processing (13)
gui/src/components/provider-workspace/ProviderModels.tsxgui/tests/provider-model-custom-add.test.tsxsrc/claude/agents-inject.tssrc/cli/models.tssrc/providers/model-discovery.tssrc/providers/registry.tssrc/router.tssrc/server/management/model-routes.tssrc/types.tstests/catalog-input-modality-enum.test.tstests/cli-models.test.tstests/provider-model-discovery-contract.test.tstests/slug-codec.test.ts
💤 Files with no reviewable changes (2)
- src/server/management/model-routes.ts
- gui/src/components/provider-workspace/ProviderModels.tsx
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The Cloudflare Workers AI discovery change looks reasonable, but the slash-custom-model change introduces an ambiguous slug collision that can route a selection to a different native model.
Required before re-review:
-
Reject or otherwise safely resolve collisions between an encoded slash custom id and another known native provider id. Example: native
openai-gpt-5.5and customopenai/gpt-5.5both exposeprovider/openai-gpt-5.5.decodeRoutedModelId()intentionally prefers an exact native-id match, so the custom row can be shown while the wire request resolves to the other native model. Add a regression covering this exact case, plus another multi-slash/hyphen collision such asa/b-cvsa-b/c. -
Fix
ocx models removeambiguity.slugEquals()can match more than one custom-model row in hand-edited/legacy configs, andfindIndex()then removes whichever appears first. Collect all matches and fail with an explicit ambiguity error requiring the custom-model UUID when there is more than one. Add the collision regression requested by the existing review thread. -
Keep API/GUI/CLI duplicate-admission rules aligned so a model that cannot be routed unambiguously cannot be created through one surface but rejected through another.
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Refresh onto current
devand run the real GitHub Actions workflows on the resulting head before re-review.
I did not find a blocking issue in the Cloudflare discovery portion itself.
Operators can store native ids like openai/gpt-5.5. Codex still sees the one-slash encoded slug. Display names remain slash-rejected.
Point named cloudflare-workers-ai rows at the official search endpoint with format=openrouter so live lists stop 405ing on GET /ai/v1/models.
Refuse custom ids whose encoded slug already names another known model, and fail ambiguous ocx models remove selectors instead of deleting the first match.
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Re-review on current head 5e0b2ab. The original collision and models remove blockers are fixed, but two routing-safety gaps remain:
[P1] defaultModel is missing from the shared collision set. The GUI includes item.defaultModel when checking encoded collisions, but CLI/API call knownModelIdsForProvider(), which currently unions prov.models, registry seeds/hints, live cache, and custom models but not prov.defaultModel. A provider whose only known native id is defaultModel: "openai-gpt-5.5" can therefore still admit custom openai/gpt-5.5 through CLI/API even though the GUI blocks it; both expose the same Codex-facing slug. Please include prov.defaultModel in knownModelIdsForProvider() and add defaultModel-only API + CLI regressions so all three admission surfaces stay aligned.
[P1] Collision safety still depends on the live-model cache state. On a cold start, a live-discovery provider can admit custom openai/gpt-5.5 while the cache is empty. If discovery later learns native openai-gpt-5.5, the same Codex-facing slug becomes ambiguous and decodeRoutedModelId() will prefer the exact native id, silently changing which model is sent upstream. Write-time validation cannot fully prevent this because the provider's live catalog can change after the write. Please add a runtime fail-safe that detects a custom encoded slug colliding with another currently known native id and fails explicitly rather than routing to a different model. Add a regression for: custom admitted while cache is empty -> live cache later gains the colliding native id -> routing the encoded selector returns an ambiguity error, not the native hyphen model.
The previous ocx models remove ambiguity fix, API/CLI/GUI collision checks for already-known ids, Cloudflare discovery changes, and current-dev refresh otherwise look good. After these two points are fixed, rerun the full exact-head CI.
Include defaultModel in the shared known-id set so CLI/API match the GUI, and throw when a later live cache makes a custom encoded slug collide with another known native id.
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@Wibias addressed in 41abdb9 (still on current
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Inline comments:
In `@src/providers/slug-codec.ts`:
- Around line 72-79: Materialize knownIds once in decodeRoutedModelIdOrThrow by
creating an ids array, then use ids for both the ambiguity check loop and the
decodeRoutedModelId call so single-use iterables are traversed safely. Add a
regression test using a generator where "openai-gpt-5.5" resolves to
"openai/gpt-5.5".
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📒 Files selected for processing (10)
gui/src/components/provider-workspace/ProviderModels.tsxgui/tests/provider-model-custom-add.test.tsxsrc/claude/agents-inject.tssrc/cli/models.tssrc/providers/slug-codec.tssrc/router.tssrc/server/management/model-routes.tstests/catalog-input-modality-enum.test.tstests/cli-models.test.tstests/slug-codec.test.ts
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Re-review on current head 41abdb93c. The two previous routing blockers are fixed: defaultModel is now part of the shared known-id set, and the route-time ambiguity guard correctly prevents a later live-cache collision from silently switching the upstream model.
One correctness issue remains before approval:
[P2] decodeRoutedModelIdOrThrow() traverses knownIds twice without materializing it. Its public contract accepts Iterable<string>, so a single-use iterable such as a generator is valid input. The first for...of consumes it; the subsequent decodeRoutedModelId(requested, knownIds) then sees an exhausted iterable and can return the encoded request unchanged instead of the native slash id. Example: a generator yielding only openai/gpt-5.5 with requested openai-gpt-5.5 should decode to openai/gpt-5.5, but the second traversal has no values left.
Please materialize once (const ids = [...knownIds]) and use ids for both the ambiguity scan and the final decode. Add the generator regression requested in the current CodeRabbit thread.
Everything else I previously blocked on now looks addressed. After this fix, rerun exact-head CI; the current head's GitHub Actions are still action_required, not green.
Reuse one array in decodeRoutedModelIdOrThrow so a single-use iterable still decodes openai-gpt-5.5 to openai/gpt-5.5.
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@Wibias addressed in facbb0c (still on current
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Approved on exact head facbb0c2300ae979a810a8bc21b50bf77dc8f6de after re-review. The previous iterable/generator blocker is fixed correctly and I do not see a remaining code blocker. Cross-platform CI was still running at approval time, so merge should still wait for the exact-head workflow to finish green.
Pre-merge review — one blocker, patch includedThanks for this. The Cloudflare portion matches the official models-search contract including One blocker before merge. The collision guard removes the documented raw full-slash escape hatch
Reproduced on That contradicts the codec's own stated precedence in its header:
and
The new test at PatchResolve an exact slash-bearing native id before ambiguity is considered: export function decodeRoutedModelIdOrThrow(requested: string, knownIds: Iterable<string>): string {
const ids = [...knownIds];
+ // An exact slash-bearing native id wins before ambiguity is considered, which
+ // is the codec's stated precedence ("native exact match ... > unique alias")
+ // and the raw full-slash escape hatch README documents. Without this, a live
+ // cache that later adds the hyphenated twin (`openai-gpt-5.5` alongside
+ // `openai/gpt-5.5`) made the encoded selector correctly ambiguous AND the
+ // explicit raw selector throw, leaving the slash model unreachable by any
+ // spelling — the exact case raw routing exists to serve.
+ if (requested.includes("/") && ids.includes(requested)) return requested;
const encodedRequested = encodeRoutedModelId(requested);The encoded selector still throws, because it genuinely names two ids. And a regression pinning both halves, appended to the existing collision test: test("the raw full-slash selector still routes after a live-cache collision", () => {
const config = zenmuxConfig();
config.customModels = [{ id: "c1", provider: "zenmux", modelId: "openai/gpt-5.5" }];
setCached("zenmux", [{ provider: "zenmux", id: "openai-gpt-5.5" }]);
expect(() => routeModel(config, "zenmux/openai-gpt-5.5")).toThrow(/ambiguous/);
expect(routeModel(config, "zenmux/openai/gpt-5.5").modelId).toBe("openai/gpt-5.5");
});Verified locally on top of your head: This PR has Batch note: only |
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Summary
/, so operators can store native ids likeopenai/gpt-5.5. Codex still sees the one-slash encoded slug (provider/openai-gpt-5.5). Display names remain slash-rejected.defaultModel-only providers.ambiguous model idinstead of silently sending the native hyphen id.decodeRoutedModelIdOrThrow()materializesknownIdsonce so a single-use iterable still decodes.ocx models removefails when an encoded selector matches more than one custom-model row and requires the custom-model UUID.cloudflare-workers-ailive discovery now uses officialGET /ai/models/search?format=openrouterinstead of the 405GET /ai/v1/models.Root cause: the custom-model write path banned
/even though the slug codec already handled native slash ids, and Workers AI live discovery hit the OpenAI-compatible/ai/v1/modelsURL that Cloudflare rejects.Verification
dev(e1769b5e29). Headfacbb0c23. Merge-base matches; branch is 0 behind / 5 ahead.bun run typecheck— cleanbun test tests/slug-codec.test.ts tests/cli-models.test.ts tests/catalog-input-modality-enum.test.ts ./gui/tests/provider-model-custom-add.test.tsx— 79 pass, 0 fail5e0b2abaa— 12415 pass, 8 skip, 0 failScreenshot
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