feat: deepseek claude endpoint

[seefs001]

Summary by CodeRabbit

• New Features
  • Added support for Claude models in the relay, enabling requests and responses through the Claude pathway.
• Refactor
  • Improved request routing to select the correct endpoints based on format and mode, preserving existing beta handling for non-Claude paths.
• Bug Fixes
  • Resolved inconsistencies in endpoint selection to reduce failed or misrouted requests when switching between completions and chat-completions.

[coderabbitai]

Walkthrough

Added Claude adaptor support in deepseek channel. ConvertClaudeRequest now uses claude.Adaptor. Request URL construction branches by RelayFormat: Claude routes to /anthropic/v1/messages; non-Claude preserves beta handling and selects /completions or /v1/chat/completions based on RelayMode.

Changes

Cohort / File(s)	Summary of changes
DeepSeek adaptor updates relay/channel/deepseek/adaptor.go	Updated imports (added gin-gonic/gin and claude packages; removed duplicate gin). ConvertClaudeRequest now delegates to claude.Adaptor. GetRequestURL refactored to branch on RelayFormat: Claude -> .../anthropic/v1/messages; else ensure /beta suffix when needed, then choose .../completions or .../v1/chat/completions based on RelayMode.

Sequence Diagram(s)

sequenceDiagram
  autonumber
  participant Client
  participant DeepSeekAdaptor as DeepSeek Adaptor
  participant ClaudeAdaptor as Claude Adaptor
  participant OpenAIAdaptor as OpenAI Adaptor
  participant Channel as Channel API

  Client->>DeepSeekAdaptor: Request (RelayFormat, RelayMode, BaseURL)
  alt RelayFormat == Claude
    DeepSeekAdaptor->>ClaudeAdaptor: ConvertClaudeRequest(...)
    Note over DeepSeekAdaptor: URL = BaseURL + "/anthropic/v1/messages"
    DeepSeekAdaptor->>Channel: POST /anthropic/v1/messages
  else Non-Claude
    DeepSeekAdaptor->>OpenAIAdaptor: Convert request (existing path)
    Note over DeepSeekAdaptor: Ensure BaseURL ends with "/beta" when needed
    alt RelayMode == Completions
      DeepSeekAdaptor->>Channel: POST .../beta/completions
    else Chat Completions
      DeepSeekAdaptor->>Channel: POST /v1/chat/completions
    end
  end
  Channel-->>DeepSeekAdaptor: Response
  DeepSeekAdaptor-->>Client: Relay response

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Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Possibly related PRs

• fix: kimi claude code #1831 — Similar change switching ConvertClaudeRequest to use claude.Adaptor in another channel adaptor.
• feat: support deepseek claude format (convert) #1522 — Prior edits to deepseek adaptor’s Claude conversion and routing logic.
• feat: Claude to gemini （适配claude格式调用gemini渠道模型） #1443 — Related adaptor work handling Claude-format request conversion for a different channel.

Suggested reviewers

• Calcium-Ion

Poem

A twitch of whiskers, ears held high,
I mapped new paths where packets fly.
Claude hops left, DeepSeek right—
URLs align, the routes feel light.
With gentle paws, I nudge the streams,
And burrow back to coding dreams. 🐇✨

Pre-merge checks and finishing touches

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title Check	✅ Passed	The title "feat: deepseek claude endpoint" is concise, uses a conventional commit prefix, and accurately summarizes the primary change in the diff (adding Claude/Anthropic support and routing for the deepseek channel); it directly relates to the adaptor and URL construction changes in the changeset. This makes the PR intent clear to reviewers without noisy detail.
Docstring Coverage	✅ Passed	No functions found in the changes. Docstring coverage check skipped.

✨ Finishing touches

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🧪 Generate unit tests

• Create PR with unit tests
• Post copyable unit tests in a comment

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[coderabbitai]

Actionable comments posted: 0

🧹 Nitpick comments (1)

relay/channel/deepseek/adaptor.go (1)

54-59: Consider the URL construction logic for consistency.

The URL construction logic has an inconsistency: for RelayModeCompletions, it uses fimBaseUrl (with /beta appended), but for the default case, it uses info.ChannelBaseUrl directly. This could lead to different behavior depending on the relay mode.

Consider making the URL construction more consistent:

 	switch info.RelayMode {
 	case constant.RelayModeCompletions:
 		return fmt.Sprintf("%s/completions", fimBaseUrl), nil
 	default:
-		return fmt.Sprintf("%s/v1/chat/completions", info.ChannelBaseUrl), nil
+		return fmt.Sprintf("%s/v1/chat/completions", fimBaseUrl), nil
 	}

Or if the beta URL is only needed for completions mode, add a comment explaining this behavior.

📜 Review details

Configuration used: CodeRabbit UI

Review profile: CHILL

Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 08638b1 and 23ee0fc.

📒 Files selected for processing (1)

• relay/channel/deepseek/adaptor.go (3 hunks)

🧰 Additional context used

🧬 Code graph analysis (1)

relay/channel/deepseek/adaptor.go (4)

relay/channel/openai/adaptor.go (1)

• Adaptor (32-35)

relay/channel/claude/adaptor.go (1)

• Adaptor (23-25)

types/relay_format.go (2)

• RelayFormat (3-3)
• RelayFormatClaude (7-7)

relay/constant/relay_mode.go (1)

• RelayModeCompletions (11-11)