Third-party Anthropic-compat providers (MiniMax, GLM, Kimi, DeepSeek)
all reuse the Anthropic SDK's wire format, which means the claude CLI
and claude-code-sdk read the bearer token from ANTHROPIC_AUTH_TOKEN no
matter which vendor is being talked to. Pre-#244:
* Canvas surfaced the vendor-specific name (MINIMAX_API_KEY, etc.)
to the user — so a user who saved only MINIMAX_API_KEY hit a
silent 401 on first call.
* The boot audit said `MINIMAX_API_KEY=set`, making it look like an
SDK bug rather than a routing gap.
* A user with multiple vendor keys could only run one workspace at a
time because they all fought over the shared ANTHROPIC_AUTH_TOKEN
slot.
Diagnostic-only audit logging shipped earlier (#32) but the actual
routing was never written — task #244 was mismarked complete.
Changes:
* config.yaml: third-party model `required_env` now references the
per-vendor name (MINIMAX_API_KEY, GLM_API_KEY, KIMI_API_KEY,
DEEPSEEK_API_KEY) so canvas asks the user for the right key.
First-party Anthropic models still use ANTHROPIC_AUTH_TOKEN /
CLAUDE_CODE_OAUTH_TOKEN.
* config.yaml: each third-party provider's `auth_env` lists the
vendor name FIRST (priority order) so projection picks the
vendor key over a stale ANTHROPIC_AUTH_TOKEN.
* adapter.py: new `_project_vendor_auth(provider)` helper, called
from `setup()` right after `_resolve_provider`. Idempotent — only
projects when ANTHROPIC_AUTH_TOKEN is unset (operator override
always wins). Logs the projection by NAME, never by VALUE
(mirrors `_audit_auth_env_presence`).
* tests/test_provider_routing.py: 6 new tests pin the contract —
vendor-key-set projects, AUTH_TOKEN-already-set is never
clobbered, first-party providers skip projection, secret value
never leaks into a log record, empty-string vendor env doesn't
trigger projection, and the same routing fires for GLM / Kimi /
DeepSeek.
Mirrors the parallel hermes-side fix from task #249 / hermes PR #38;
keeps the two runtimes' multi-vendor UX in lockstep.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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