mirror of
https://github.com/router-for-me/CLIProxyAPIPlus.git
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2398ebad55
Claude Code and MCP clients may send tool names containing characters invalid for Gemini's function_declarations (e.g. '/', '@', spaces). Sanitize on request via SanitizeFunctionName and restore original names on response for both antigravity/claude and gemini-cli/claude translators.
243 lines
10 KiB
Go
243 lines
10 KiB
Go
// Package claude provides request translation functionality for Claude Code API compatibility.
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// This package handles the conversion of Claude Code API requests into Gemini CLI-compatible
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// JSON format, transforming message contents, system instructions, and tool declarations
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// into the format expected by Gemini CLI API clients. It performs JSON data transformation
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// to ensure compatibility between Claude Code API format and Gemini CLI API's expected format.
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package claude
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import (
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"strings"
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"github.com/router-for-me/CLIProxyAPI/v6/internal/translator/gemini/common"
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"github.com/router-for-me/CLIProxyAPI/v6/internal/util"
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"github.com/tidwall/gjson"
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"github.com/tidwall/sjson"
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)
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const geminiCLIClaudeThoughtSignature = "skip_thought_signature_validator"
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// ConvertClaudeRequestToCLI parses and transforms a Claude Code API request into Gemini CLI API format.
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// It extracts the model name, system instruction, message contents, and tool declarations
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// from the raw JSON request and returns them in the format expected by the Gemini CLI API.
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// The function performs the following transformations:
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// 1. Extracts the model information from the request
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// 2. Restructures the JSON to match Gemini CLI API format
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// 3. Converts system instructions to the expected format
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// 4. Maps message contents with proper role transformations
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// 5. Handles tool declarations and tool choices
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// 6. Maps generation configuration parameters
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//
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// Parameters:
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// - modelName: The name of the model to use for the request
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// - rawJSON: The raw JSON request data from the Claude Code API
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// - stream: A boolean indicating if the request is for a streaming response (unused in current implementation)
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//
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// Returns:
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// - []byte: The transformed request data in Gemini CLI API format
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func ConvertClaudeRequestToCLI(modelName string, inputRawJSON []byte, _ bool) []byte {
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rawJSON := inputRawJSON
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// Build output Gemini CLI request JSON
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out := []byte(`{"model":"","request":{"contents":[]}}`)
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out, _ = sjson.SetBytes(out, "model", modelName)
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// system instruction
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if systemResult := gjson.GetBytes(rawJSON, "system"); systemResult.IsArray() {
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systemInstruction := []byte(`{"role":"user","parts":[]}`)
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hasSystemParts := false
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systemResult.ForEach(func(_, systemPromptResult gjson.Result) bool {
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if systemPromptResult.Get("type").String() == "text" {
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textResult := systemPromptResult.Get("text")
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if textResult.Type == gjson.String {
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part := []byte(`{"text":""}`)
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part, _ = sjson.SetBytes(part, "text", textResult.String())
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systemInstruction, _ = sjson.SetRawBytes(systemInstruction, "parts.-1", part)
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hasSystemParts = true
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}
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}
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return true
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})
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if hasSystemParts {
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out, _ = sjson.SetRawBytes(out, "request.systemInstruction", systemInstruction)
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}
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} else if systemResult.Type == gjson.String {
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out, _ = sjson.SetBytes(out, "request.systemInstruction.parts.-1.text", systemResult.String())
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}
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// contents
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if messagesResult := gjson.GetBytes(rawJSON, "messages"); messagesResult.IsArray() {
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messagesResult.ForEach(func(_, messageResult gjson.Result) bool {
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roleResult := messageResult.Get("role")
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if roleResult.Type != gjson.String {
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return true
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}
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role := roleResult.String()
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if role == "assistant" {
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role = "model"
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}
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contentJSON := []byte(`{"role":"","parts":[]}`)
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contentJSON, _ = sjson.SetBytes(contentJSON, "role", role)
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contentsResult := messageResult.Get("content")
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if contentsResult.IsArray() {
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contentsResult.ForEach(func(_, contentResult gjson.Result) bool {
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switch contentResult.Get("type").String() {
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case "text":
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part := []byte(`{"text":""}`)
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part, _ = sjson.SetBytes(part, "text", contentResult.Get("text").String())
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contentJSON, _ = sjson.SetRawBytes(contentJSON, "parts.-1", part)
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case "tool_use":
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functionName := util.SanitizeFunctionName(contentResult.Get("name").String())
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functionArgs := contentResult.Get("input").String()
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argsResult := gjson.Parse(functionArgs)
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if argsResult.IsObject() && gjson.Valid(functionArgs) {
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part := []byte(`{"thoughtSignature":"","functionCall":{"name":"","args":{}}}`)
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part, _ = sjson.SetBytes(part, "thoughtSignature", geminiCLIClaudeThoughtSignature)
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part, _ = sjson.SetBytes(part, "functionCall.name", functionName)
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part, _ = sjson.SetRawBytes(part, "functionCall.args", []byte(functionArgs))
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contentJSON, _ = sjson.SetRawBytes(contentJSON, "parts.-1", part)
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}
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case "tool_result":
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toolCallID := contentResult.Get("tool_use_id").String()
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if toolCallID == "" {
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return true
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}
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funcName := toolCallID
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toolCallIDs := strings.Split(toolCallID, "-")
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if len(toolCallIDs) > 1 {
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funcName = strings.Join(toolCallIDs[0:len(toolCallIDs)-1], "-")
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}
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responseData := contentResult.Get("content").Raw
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part := []byte(`{"functionResponse":{"name":"","response":{"result":""}}}`)
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part, _ = sjson.SetBytes(part, "functionResponse.name", util.SanitizeFunctionName(funcName))
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part, _ = sjson.SetBytes(part, "functionResponse.response.result", responseData)
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contentJSON, _ = sjson.SetRawBytes(contentJSON, "parts.-1", part)
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case "image":
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source := contentResult.Get("source")
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if source.Get("type").String() == "base64" {
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mimeType := source.Get("media_type").String()
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data := source.Get("data").String()
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if mimeType != "" && data != "" {
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part := []byte(`{"inlineData":{"mime_type":"","data":""}}`)
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part, _ = sjson.SetBytes(part, "inlineData.mime_type", mimeType)
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part, _ = sjson.SetBytes(part, "inlineData.data", data)
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contentJSON, _ = sjson.SetRawBytes(contentJSON, "parts.-1", part)
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}
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}
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}
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return true
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})
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out, _ = sjson.SetRawBytes(out, "request.contents.-1", contentJSON)
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} else if contentsResult.Type == gjson.String {
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part := []byte(`{"text":""}`)
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part, _ = sjson.SetBytes(part, "text", contentsResult.String())
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contentJSON, _ = sjson.SetRawBytes(contentJSON, "parts.-1", part)
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out, _ = sjson.SetRawBytes(out, "request.contents.-1", contentJSON)
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}
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return true
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})
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}
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// tools
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if toolsResult := gjson.GetBytes(rawJSON, "tools"); toolsResult.IsArray() {
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hasTools := false
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toolsResult.ForEach(func(_, toolResult gjson.Result) bool {
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inputSchemaResult := toolResult.Get("input_schema")
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if inputSchemaResult.Exists() && inputSchemaResult.IsObject() {
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inputSchema := util.CleanJSONSchemaForGemini(inputSchemaResult.Raw)
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tool, _ := sjson.DeleteBytes([]byte(toolResult.Raw), "input_schema")
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tool, _ = sjson.SetRawBytes(tool, "parametersJsonSchema", []byte(inputSchema))
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tool, _ = sjson.SetBytes(tool, "name", util.SanitizeFunctionName(gjson.GetBytes(tool, "name").String()))
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tool, _ = sjson.DeleteBytes(tool, "strict")
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tool, _ = sjson.DeleteBytes(tool, "input_examples")
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tool, _ = sjson.DeleteBytes(tool, "type")
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tool, _ = sjson.DeleteBytes(tool, "cache_control")
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tool, _ = sjson.DeleteBytes(tool, "defer_loading")
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tool, _ = sjson.DeleteBytes(tool, "eager_input_streaming")
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if gjson.ValidBytes(tool) && gjson.ParseBytes(tool).IsObject() {
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if !hasTools {
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out, _ = sjson.SetRawBytes(out, "request.tools", []byte(`[{"functionDeclarations":[]}]`))
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hasTools = true
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}
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out, _ = sjson.SetRawBytes(out, "request.tools.0.functionDeclarations.-1", tool)
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}
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}
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return true
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})
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if !hasTools {
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out, _ = sjson.DeleteBytes(out, "request.tools")
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}
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}
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// tool_choice
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toolChoiceResult := gjson.GetBytes(rawJSON, "tool_choice")
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if toolChoiceResult.Exists() {
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toolChoiceType := ""
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toolChoiceName := ""
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if toolChoiceResult.IsObject() {
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toolChoiceType = toolChoiceResult.Get("type").String()
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toolChoiceName = toolChoiceResult.Get("name").String()
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} else if toolChoiceResult.Type == gjson.String {
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toolChoiceType = toolChoiceResult.String()
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}
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switch toolChoiceType {
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case "auto":
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out, _ = sjson.SetBytes(out, "request.toolConfig.functionCallingConfig.mode", "AUTO")
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case "none":
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out, _ = sjson.SetBytes(out, "request.toolConfig.functionCallingConfig.mode", "NONE")
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case "any":
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out, _ = sjson.SetBytes(out, "request.toolConfig.functionCallingConfig.mode", "ANY")
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case "tool":
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out, _ = sjson.SetBytes(out, "request.toolConfig.functionCallingConfig.mode", "ANY")
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if toolChoiceName != "" {
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out, _ = sjson.SetBytes(out, "request.toolConfig.functionCallingConfig.allowedFunctionNames", []string{util.SanitizeFunctionName(toolChoiceName)})
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}
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}
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}
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// Map Anthropic thinking -> Gemini CLI thinkingConfig when enabled
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// Translator only does format conversion, ApplyThinking handles model capability validation.
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if t := gjson.GetBytes(rawJSON, "thinking"); t.Exists() && t.IsObject() {
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switch t.Get("type").String() {
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case "enabled":
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if b := t.Get("budget_tokens"); b.Exists() && b.Type == gjson.Number {
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budget := int(b.Int())
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out, _ = sjson.SetBytes(out, "request.generationConfig.thinkingConfig.thinkingBudget", budget)
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out, _ = sjson.SetBytes(out, "request.generationConfig.thinkingConfig.includeThoughts", true)
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}
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case "adaptive", "auto":
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// For adaptive thinking:
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// - If output_config.effort is explicitly present, pass through as thinkingLevel.
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// - Otherwise, treat it as "enabled with target-model maximum" and emit high.
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// ApplyThinking handles clamping to target model's supported levels.
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effort := ""
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if v := gjson.GetBytes(rawJSON, "output_config.effort"); v.Exists() && v.Type == gjson.String {
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effort = strings.ToLower(strings.TrimSpace(v.String()))
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}
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if effort != "" {
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out, _ = sjson.SetBytes(out, "request.generationConfig.thinkingConfig.thinkingLevel", effort)
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} else {
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out, _ = sjson.SetBytes(out, "request.generationConfig.thinkingConfig.thinkingLevel", "high")
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}
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out, _ = sjson.SetBytes(out, "request.generationConfig.thinkingConfig.includeThoughts", true)
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}
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}
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if v := gjson.GetBytes(rawJSON, "temperature"); v.Exists() && v.Type == gjson.Number {
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out, _ = sjson.SetBytes(out, "request.generationConfig.temperature", v.Num)
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}
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if v := gjson.GetBytes(rawJSON, "top_p"); v.Exists() && v.Type == gjson.Number {
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out, _ = sjson.SetBytes(out, "request.generationConfig.topP", v.Num)
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}
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if v := gjson.GetBytes(rawJSON, "top_k"); v.Exists() && v.Type == gjson.Number {
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out, _ = sjson.SetBytes(out, "request.generationConfig.topK", v.Num)
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}
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out = common.AttachDefaultSafetySettings(out, "request.safetySettings")
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return out
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}
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