Five reviewers (Fable 5.1, Opus 5.5, Sonnet 5.5, Codex GPT-6 Astra, Codex
GPT-6.1 Sol) found no behavior or security regression; this commit applies
what they asked for.
Settings dialog: the automatic model list fetch only fills the list, which
waits behind 'Browse models'; it no longer opens the picker (the modal picker
took the focus from whatever the user was typing) and shows no error of its
own. One list request per provider at a time, so a click during the automatic
fetch sends nothing twice; the baseline that detects freshly entered
credentials is taken on every visit of a provider page; SGLang's prefilled
local example URL triggers no fetch. Entries saved with Azure's old
placeholder URL still count as having no URL. The base URL field of Azure and
of the custom preset is labelled required (new dictionary key baseUrlRequired).
Smaller code: the PROVIDER_INFO alias is gone (three files and the tests
import PROVIDERS), as are three logo values no code read, two unused type
re-exports, three unused exports and SINGLE_SYSTEM_PROVIDERS (the chat route
reads the record). Renamed for clarity: REQUIRED_KEY_VARS, requiredKeyEnv,
configuredUrl, LocalizedText. Seven stale comments rewritten; the custom
preset's note shortened.
Tests: the matrix gains six override shapes (a Vertex key alone, AWS keys with
a session token, headers with a URL, a trusted URL with a key, a key with a
server model's URL variable, '/' alone), 5843 rows; the new rows were
regenerated on the pre-refactor code and match it. The matrix and the server
credential tests clear every variable they read; the admin variable table
covers every provider; a test that derived its expectation from the function
under test is gone; the singleSystem, listNeedsNoKey, sdkKnowsEndpoint and
auto-detection sets are spelled out.
Docs: the READMEs say 25 providers and name the OpenAI-compatible preset; the
AI_PROVIDER lists are complete; the Azure example URL has its /openai suffix;
'Adding a Provider' names the tests to update.
Step 8 of the provider refactor plan, a new provider made of one record.
'custom' runs on @ai-sdk/openai-compatible with <think> extraction, merges
system messages (open-source chat templates reject several), has no default
URL (so a key alone does not count as connected, and the chat endpoint is
shown under the URL field) and lists models from its /models. Server side:
CUSTOM_API_KEY and CUSTOM_BASE_URL, ADMIN_CUSTOM_* in the admin panel.
env.example and the three provider docs gained a section; the picker count
in the e2e test is 25 and a new e2e test walks through the preset. The
behavior snapshot gained the new provider's 146 rows; its two 'No AI provider
configured' rows list CUSTOM_API_KEY now.
A sixteenth override shape, a key with a private base URL, so the snapshot
holds usesServerEndpoint's answer for the server's own network before the
function changes. 252 rows added, none changed.
Step 2 of the provider refactor plan. lib/providers.ts holds one record per
provider (SDK kind, credential kind, env prefix, default URL, picker group,
notes and base URL hints in four languages, and the short model list of the
six providers that cannot list models). ProviderName is now the record's
key set and lib/types/model-config.ts re-exports the record as PROVIDER_INFO,
so the twelve importers are unchanged.
Derived from the record, under their old names and in their old files:
FIXED_CRED_PROVIDERS, PROVIDER_LOGO_MAP and chatRequestUrl's own-path list
(model-config.ts), SINGLE_SYSTEM_PROVIDERS, PROVIDER_ENV_VARS and
SDK_KNOWS_ENDPOINT (ai-providers.ts), PROVIDER_GROUPS and OPTIONS_OPEN
(provider-setup.ts), NO_KEY_NEEDED (provider-models route).
tests/unit/providers.test.ts freezes the old tables' values and checks the
derived ones against them. The record is written in the picker's order, so
the provider lists in two 'No AI provider configured' messages change order;
those two snapshot rows are the only snapshot change.
Step 0 of docs/plans/2026-10-provider-refactor.md. provider-matrix.test.ts
snapshots what getAIModel hands to each SDK factory, and what
usesServerCredentials, usesServerEndpoint, globalBaseUrl and chatRequestUrl
answer, for 24 providers, 15 client override shapes and 9 server
environments, plus auto-detection rows and model id probes (3879 rows).
provider-legacy.test.ts keeps a copy of the two quota functions and compares
them with the live ones over every input class (30720 and 288 combinations).
No production code changes.
dayuan.jiang