WIP: Add DeepSeek Anthropic-compatible route by Hmbown · Pull Request #3449 · Hmbown/CodeWhale

Hmbown · 2026-06-23T05:04:30Z

Goal

Add a first-class opt-in route for DeepSeek's Anthropic-compatible API without changing the existing DeepSeek Chat Completions path.

Refs #2963.

Changes

Adds deepseek-anthropic / deepseek_anthropic provider metadata, config tables, aliases, defaults, and env var wiring.
Defaults the route to https://api.deepseek.com/anthropic with deepseek-v4-pro.
Routes the provider through the existing Anthropic Messages adapter and x-api-key / anthropic-version header dialect.
Marks runtime capability metadata as AnthropicMessages, while keeping DeepSeek-native cache telemetry scoped to the existing DeepSeek routes.
Updates provider docs, provider registry drift checks, and generated web facts maps for the new manual provider.
Adds focused config, URL, header, capability, and metadata parity tests.

Upstream Docs Checked

DeepSeek Anthropic API guide: https://api-docs.deepseek.com/guides/anthropic_api
DeepSeek V4 update: https://api-docs.deepseek.com/updates
Anthropic tool-use docs surface: https://platform.claude.com/docs/en/agents-and-tools/tool-use/overview

Verification

cargo fmt --all -- --check
cargo test -p codewhale-config --locked provider_metadata_defaults_match_runtime_helpers
cargo test -p codewhale-config --locked deepseek_anthropic_route_defaults_to_anthropic_endpoint
cargo test -p codewhale-tui --bin codewhale-tui --locked messages_url_tolerates_v1_suffix
cargo test -p codewhale-tui --bin codewhale-tui --locked deepseek_anthropic_uses_anthropic_header_dialect
cargo test -p codewhale-tui --bin codewhale-tui --locked provider_capability_deepseek_anthropic_uses_messages_payload
cargo test -p codewhale-tui --bin codewhale-tui --locked body_maps_reasoning_effort_to_adaptive_thinking_and_effort
cargo test -p codewhale-tui --bin codewhale-tui --locked sse_fixture_decodes_text_thinking_signature_and_tool_use
cargo test -p codewhale-tui --bin codewhale-tui --locked parse_usage_reads_deepseek_cache_and_reasoning_tokens
cargo test -p codewhale-tui --bin codewhale-tui --locked api_provider_metadata_helpers_follow_config_provider_metadata
cargo test -p codewhale-tui --bin codewhale-tui --locked provider_config_key_follows_config_provider_metadata
node web/scripts/derive-facts.mjs
python3 scripts/check-provider-registry.py
./scripts/release/check-versions.sh
./scripts/release/check-ohos-deps.sh
git diff --check

Remaining Risk

This wires the documented API shape and adapter path, but does not prove account-specific server-tool behavior against a live DeepSeek key. That should stay as a follow-up manual probe before marking #2963 fully done.

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gemini-code-assist

Code Review

This pull request introduces a new DeepseekAnthropic provider variant, allowing users to opt-in to a DeepSeek route that communicates via the Anthropic Messages wire protocol. The changes span configuration structures, provider registries, and TUI client implementations to support the new endpoint, authentication headers, and aliases. The review feedback highlights three key areas for improvement: a security risk where ANTHROPIC_API_KEY could be leaked to DeepSeek servers if configured as a fallback, missing hyphenated aliases in the subagent provider key matching logic, and an inconsistency in EnvRuntimeOverrides that prevents overriding the base URL for the new provider via environment variables.

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gemini-code-assist · 2026-06-23T05:05:49Z

+    fn env_vars(&self) -> &'static [&'static str] {
+        &["DEEPSEEK_API_KEY", "ANTHROPIC_API_KEY"]
+    }


Including ANTHROPIC_API_KEY in the list of environment variables for DeepseekAnthropic poses a security risk. If a user has ANTHROPIC_API_KEY set in their environment (which is common for Anthropic users) but has not set DEEPSEEK_API_KEY, the application will fall back to using the Anthropic API key and send it to DeepSeek's servers (https://api.deepseek.com/anthropic). This results in credential exposure to a third party. Since DeepSeek's Anthropic-compatible endpoint requires a DeepSeek API key and cannot authenticate with an Anthropic key, ANTHROPIC_API_KEY should be removed from this list.

Suggested change

fn env_vars(&self) -> &'static [&'static str] {

&["DEEPSEEK_API_KEY", "ANTHROPIC_API_KEY"]

}

fn env_vars(&self) -> &'static [&'static str] {

&["DEEPSEEK_API_KEY"]

}

gemini-code-assist · 2026-06-23T05:05:50Z

+        ApiProvider::DeepseekAnthropic => matches!(
+            normalized.as_str(),
+            "deepseek_anthropic" | "deepseek_claude" | "deepseek_anthropic_api"
+        ),


The subagent provider key matching is missing the hyphenated aliases (deepseek-anthropic and deepseek-claude), which are supported elsewhere in the configuration (e.g., in Serde aliases). If a user configures a subagent using the hyphenated format, it will fail to match. We should include the hyphenated versions to ensure consistency and robustness.

Suggested change

ApiProvider::DeepseekAnthropic => matches!(

normalized.as_str(),

"deepseek_anthropic" | "deepseek_claude" | "deepseek_anthropic_api"

),

ApiProvider::DeepseekAnthropic => matches!(

normalized.as_str(),

"deepseek_anthropic" | "deepseek-anthropic" | "deepseek_claude" | "deepseek-claude" | "deepseek_anthropic_api"

),

gemini-code-assist · 2026-06-23T05:05:50Z

        // values (`providers.<name>.base_url`) still win when env is unset.
        match provider {
            ProviderKind::Deepseek => self.deepseek_base_url.clone(),
+            ProviderKind::DeepseekAnthropic => None,


Returning None here means that EnvRuntimeOverrides does not support overriding the base URL for the deepseek-anthropic provider via environment variables, unlike other providers (e.g., Deepseek uses self.deepseek_base_url.clone()). This creates an inconsistency between crates/config and crates/tui (where DEEPSEEK_ANTHROPIC_BASE_URL or similar is handled). Consider adding a deepseek_anthropic_base_url field to EnvRuntimeOverrides to support environment-based base URL overrides consistently.

greptile-apps

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Add an opt-in deepseek-anthropic provider that resolves to DeepSeek's Anthropic-compatible endpoint and model defaults while leaving the existing DeepSeek chat-completions route unchanged. Route the provider through the existing Anthropic Messages adapter, x-api-key header dialect, and TUI provider config table, with runtime capability metadata marking it as AnthropicMessages. Update the provider docs, provider registry drift checker, and web facts maps so the manual provider implementation stays covered by generated guards. Verified with: cargo fmt --all -- --check; cargo test -p codewhale-config --locked provider_metadata_defaults_match_runtime_helpers; cargo test -p codewhale-config --locked deepseek_anthropic_route_defaults_to_anthropic_endpoint; cargo test -p codewhale-tui --bin codewhale-tui --locked messages_url_tolerates_v1_suffix; cargo test -p codewhale-tui --bin codewhale-tui --locked deepseek_anthropic_uses_anthropic_header_dialect; cargo test -p codewhale-tui --bin codewhale-tui --locked provider_capability_deepseek_anthropic_uses_messages_payload; cargo test -p codewhale-tui --bin codewhale-tui --locked body_maps_reasoning_effort_to_adaptive_thinking_and_effort; cargo test -p codewhale-tui --bin codewhale-tui --locked sse_fixture_decodes_text_thinking_signature_and_tool_use; cargo test -p codewhale-tui --bin codewhale-tui --locked parse_usage_reads_deepseek_cache_and_reasoning_tokens; cargo test -p codewhale-tui --bin codewhale-tui --locked api_provider_metadata_helpers_follow_config_provider_metadata; cargo test -p codewhale-tui --bin codewhale-tui --locked provider_config_key_follows_config_provider_metadata; node web/scripts/derive-facts.mjs; python3 scripts/check-provider-registry.py; ./scripts/release/check-versions.sh; ./scripts/release/check-ohos-deps.sh; git diff --check

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greptile-apps Bot reviewed Jun 23, 2026

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gemini-code-assist Bot reviewed Jun 23, 2026

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Hmbown force-pushed the issue/2963-deepseek-anthropic-route branch from c63864c to 69d198f Compare June 23, 2026 05:07

greptile-apps Bot reviewed Jun 23, 2026

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Hmbown force-pushed the issue/2963-deepseek-anthropic-route branch from 69d198f to e93cc8f Compare June 23, 2026 05:12

greptile-apps Bot reviewed Jun 23, 2026

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Hmbown marked this pull request as ready for review June 23, 2026 05:55

greptile-apps Bot reviewed Jun 23, 2026

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WIP: Add DeepSeek Anthropic-compatible route#3449

WIP: Add DeepSeek Anthropic-compatible route#3449
Hmbown wants to merge 1 commit into
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issue/2963-deepseek-anthropic-route

Hmbown commented Jun 23, 2026 •

edited

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Hmbown commented Jun 23, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

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Goal

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Verification

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Hmbown commented Jun 23, 2026 •

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