Add provider id "anthropic-compatible": the existing AnthropicProvider
pointed at Anthropic-compatible local servers (vLLM /v1/messages),
mirroring the openai/openai-compatible split. Registry-only — configured
via the admin Models tab or [models.*] toml, not exposed on the bare
--provider flag, so the CLI/server prod-URL defaults are unreachable for
the lane and real-Anthropic behavior is untouched.
Lane behavior (live-verified against vLLM 0.22.1rc1 + DeepSeek-V4-Flash):
- Capability defaults replace the Claude static table: token_param
max_tokens, thinking_mode none, web_search/tool_search/vision off,
reasoning replay on. vLLM rejects Anthropic server-side tool types
(tools require input_schema) and ignores the thinking request param,
so neither is sent; thinking blocks still stream back and round-trip
through the native lane verbatim.
- Reasoning toggles via server_compat extra_body chat_template_kwargs
(first-class vLLM request field; request-level keys beat server
defaults). _build_thinking_and_kwargs forwards non-internal
extra_params as SDK extra_body; thinking_budget_tokens stays internal.
- No temperature force: thinking_mode none skips the Claude-only
temperature=1.0 requirement.
Admin UI: provider option + URL placeholder (base_url without /v1 — the
SDK appends /v1/messages); the server-compat section shows only the
extra-body field for the lane. thinking_mode round-trips through the
form dropdown for every provider except anthropic-compatible, where it
stays in the raw capabilities JSON — the edit-load lift and save restore
use the same predicate so stored overrides are never silently dropped.
Docs: architecture.md gains the lane subsection incl. verified quirks
(thinking param dropped by vLLM; stop_sequences cut inside thinking and
report end_turn; usage has no cache fields; images need a multimodal
model; mid-conversation system turns are per-model opt-in).
Negative-tested: removing the _INTERNAL_EXTRA_PARAMS exclusion fails
test_internal_keys_not_leaked; the live test drives a streamed turn with
the chat_template_kwargs toggle and asserts no reasoning deltas.
* fix: detect context window from vLLM max_model_len field
vLLM exposes the context window as max_model_len on the model object,
not meta.n_ctx_train (llama.cpp format). Both detect_model() and
probe_model_endpoint() now check max_model_len first, falling back
to meta.n_ctx_train for llama.cpp. Fixes 32768 fallback on vLLM
servers that report 262144+ token context windows.
* test: add vLLM max_model_len detection tests
Copilot review: new vLLM context window path had no test coverage.
Add tests for probe_model_endpoint (max_model_len detected, preferred
over meta.n_ctx_train) and detect_model (vLLM model object with
max_model_len).
Claude 4.6 (Opus + Sonnet) unified on 1M token context windows.
Update capabilities table from 200K to 1M for both models. Remove
claude-opus-4 and claude-sonnet-4 entries (end of life). 4.5 models
remain at 200K. Default fallback stays at 200K for unknown models.
* feat: model detect button, capabilities API, and model dropdowns
Admin Models tab: add Detect button that probes a model endpoint to
verify reachability, list available models, detect context_window, and
identify server type (llama.cpp/vLLM/SGLang/OpenAI/Anthropic). Add
static capability lookup endpoint for auto-filling form fields when
a known model name is entered. Add known-models endpoint for datalist
autocomplete suggestions.
Add "openai-compatible" as a third provider option for local servers,
keeping the OpenAI SDK under the hood but suppressing capability
auto-fill and known-model suggestions.
Replace free-text model input with a select dropdown in both console
and server new-workstream modals, populated from a new lightweight
GET /v1/api/models endpoint.
New endpoints:
- POST /v1/api/admin/model-definitions/detect
- GET /v1/api/admin/model-capabilities
- GET /v1/api/admin/model-capabilities/known
- GET /v1/api/models (both console and server)
* fix: accumulate signature_delta for Anthropic thinking blocks (#214)
The streaming path captured thinking_delta events but not
signature_delta, leaving the signature empty on round-trip and
causing 400 errors on multi-turn conversations with thinking enabled.
* fix: address PR review — empty base_url, capability leak, response schemas
- Don't pass empty base_url to OpenAI client (falls back to SDK default)
- Return None from lookup_model_capabilities for openai-compatible provider
- Only use static capability table for known models in _detect_openai_compat,
avoiding misleading 200k default for unknown local models
- Add AvailableModelInfo + ListAvailableModelsResponse schemas to both
console_spec and server_spec
- Regenerate TypeScript SDK OpenAPI snapshots
* fix: apply same known-model guard to Anthropic context_window detection
Only report context_window from the static capability table when the
Anthropic model is actually known, matching the OpenAI path fix.
* ui: add autocomplete hint to Model ID label in admin modal
* fix: use explicit kwargs for OpenAI() to satisfy strict mypy
Patrick Buckley