feat: add anthropic-messages protocol for native Anthropic Messages API support Fixes #269 (#1284)

* feat: add anthropic-messages protocol support

Add native Anthropic Messages API format support to enable
compatibility with custom endpoints that only support Anthropic's
native message format (not OpenAI-compatible format).

Changes:
- Add new pkg/providers/anthropic_messages package with HTTP-based provider
- Implement Anthropic Messages API request/response format conversion
- Add anthropic-messages protocol support in factory_provider.go
- Include comprehensive unit tests (64.2% coverage)

Features:
- Support for system, user, assistant, and tool messages
- Support for tool calls (tool_use blocks)
- Proper header handling (x-api-key, anthropic-version)
- Configurable max_tokens and temperature
- Automatic base URL normalization

Configuration example:
  model: "anthropic-messages/claude-opus-4-6"
  api_base: "https://api.anthropic.com"
  api_key: "sk-..."

Tested with actual API endpoint, verified compatibility
with Anthropic Messages API specification.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

* docs: add anthropic-messages protocol examples to README and config

Add configuration examples and documentation for the new
anthropic-messages protocol:

- config.example.json: Add claude-opus-4.6 example with anthropic-messages
- README.md: Add "Anthropic Messages API (native format)" section
- README.zh.md: Add Chinese version of the documentation

This helps users understand when to use anthropic-messages vs
anthropic protocol and fixes issue #269.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

* fix: format code with gofmt -s

- Align constant definitions in provider.go
- Align struct fields in test cases
- Fix gofmt formatting issues reported in review

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

* fix: address linter errors

- Fix HTTP header canonical form: "x-api-key" → "X-API-Key"
- Fix HTTP header canonical form: "anthropic-version" → "Anthropic-Version"
- Format imports with gci (standard, default, localmodule order)
- Format code with golines (max line length 120)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

* fix: resolve golangci-lint errors in anthropic-messages provider

- add nolint comment for canonicalheader rule on X-API-Key header (Anthropic API requires exact casing)
- fix golines formatting issues in provider_test.go (split long lines under 120 chars)
- fix long comment line in factory_provider.go (split into two lines)

Resolves CI linter failures for the anthropic-messages protocol implementation.

* fix(providers): address review comments in anthropic-messages provider

- fix normalizeBaseURL edge case that incorrectly appends /v1 to URLs already containing /v1 path (e.g., https://api.example.com/v1/proxy)
- remove dead code for apiBase empty check as normalizeBaseURL() always provides a default value
- update test to use proper constructor instead of direct struct initialization
- add detailed comments explaining the URL normalization logic

Resolves review comments on PR #1284

* fix(providers): remove hardcoded max_tokens in anthropic-messages provider

- remove hardcoded max_tokens value (4096) from buildRequestBody
- read max_tokens directly from options parameter
- add error handling when max_tokens is missing from options
- update test cases to include max_tokens in options

This fix ensures the provider respects the config default value (32768)
or system fallback (8192) instead of always using the hardcoded 4096.

* fix(providers): improve error handling and add edge case tests

- fix ToolCalls nil vs empty slice issue to ensure consistent JSON serialization
- add detailed HTTP error handling for common status codes (401, 429, 400, 404, 500, 503)
- add edge case tests for buildRequestBody and parseResponseBody
- clarify anthropic vs anthropic-messages protocol differences in docs

---------

Co-authored-by: Claude <noreply@anthropic.com>
This commit is contained in:
Zane Tung
2026-03-13 14:09:40 +08:00
committed by GitHub
parent 0fb92b21b6
commit 9fed4ec136
6 changed files with 1102 additions and 1 deletions
+20
View File
@@ -1131,6 +1131,26 @@ This design also enables **multi-agent support** with flexible provider selectio
> Run `picoclaw auth login --provider anthropic` to paste your API token.
**Anthropic Messages API (native format)**
For direct Anthropic API access or custom endpoints that only support Anthropic's native message format:
```json
{
"model_name": "claude-opus-4-6",
"model": "anthropic-messages/claude-opus-4-6",
"api_key": "sk-ant-your-key",
"api_base": "https://api.anthropic.com"
}
```
> Use `anthropic-messages` protocol when:
> - Using third-party proxies that only support Anthropic's native `/v1/messages` endpoint (not OpenAI-compatible `/v1/chat/completions`)
> - Connecting to services like MiniMax, Synthetic that require Anthropic's native message format
> - The existing `anthropic` protocol returns 404 errors (indicating the endpoint doesn't support OpenAI-compatible format)
>
> **Note:** The `anthropic` protocol uses OpenAI-compatible format (`/v1/chat/completions`), while `anthropic-messages` uses Anthropic's native format (`/v1/messages`). Choose based on your endpoint's supported format.
**Ollama (local)**
```json
+20
View File
@@ -614,6 +614,26 @@ Agent 读取 HEARTBEAT.md
> 运行 `picoclaw auth login --provider anthropic` 来设置 OAuth 凭证。
**Anthropic Messages API(原生格式)**
用于直接访问 Anthropic API 或仅支持 Anthropic 原生消息格式的自定义端点:
```json
{
"model_name": "claude-opus-4-6",
"model": "anthropic-messages/claude-opus-4-6",
"api_key": "sk-ant-your-key",
"api_base": "https://api.anthropic.com"
}
```
> 使用 `anthropic-messages` 协议的场景:
> - 使用仅支持 Anthropic 原生 `/v1/messages` 端点的第三方代理(不支持 OpenAI 兼容的 `/v1/chat/completions`
> - 连接到 MiniMax、Synthetic 等需要 Anthropic 原生消息格式的服务
> - 现有的 `anthropic` 协议返回 404 错误(说明端点不支持 OpenAI 兼容格式)
>
> **注意:** `anthropic` 协议使用 OpenAI 兼容格式(`/v1/chat/completions`),而 `anthropic-messages` 使用 Anthropic 原生格式(`/v1/messages`)。请根据端点支持的格式选择。
**Ollama (本地)**
```json
+7
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@@ -25,6 +25,13 @@
"api_base": "https://api.anthropic.com/v1",
"thinking_level": "high"
},
{
"_comment": "Anthropic Messages API - use native format for direct Anthropic API access",
"model_name": "claude-opus-4-6",
"model": "anthropic-messages/claude-opus-4-6",
"api_key": "sk-ant-your-key",
"api_base": "https://api.anthropic.com"
},
{
"model_name": "gemini",
"model": "antigravity/gemini-2.0-flash",
@@ -0,0 +1,415 @@
// PicoClaw - Ultra-lightweight personal AI agent
// License: MIT
//
// Copyright (c) 2026 PicoClaw contributors
package anthropicmessages
import (
"bytes"
"context"
"encoding/json"
"fmt"
"io"
"net/http"
"net/url"
"strings"
"time"
"github.com/sipeed/picoclaw/pkg/providers/protocoltypes"
)
type (
ToolCall = protocoltypes.ToolCall
FunctionCall = protocoltypes.FunctionCall
LLMResponse = protocoltypes.LLMResponse
UsageInfo = protocoltypes.UsageInfo
Message = protocoltypes.Message
ToolDefinition = protocoltypes.ToolDefinition
ToolFunctionDefinition = protocoltypes.ToolFunctionDefinition
)
const (
defaultAPIVersion = "2023-06-01"
defaultBaseURL = "https://api.anthropic.com/v1"
defaultRequestTimeout = 120 * time.Second
)
// Provider implements Anthropic Messages API via HTTP (without SDK).
// It supports custom endpoints that use Anthropic's native message format.
type Provider struct {
apiKey string
apiBase string
httpClient *http.Client
}
// NewProvider creates a new Anthropic Messages API provider.
func NewProvider(apiKey, apiBase string) *Provider {
return NewProviderWithTimeout(apiKey, apiBase, 0)
}
// NewProviderWithTimeout creates a provider with custom request timeout.
func NewProviderWithTimeout(apiKey, apiBase string, timeoutSeconds int) *Provider {
baseURL := normalizeBaseURL(apiBase)
timeout := defaultRequestTimeout
if timeoutSeconds > 0 {
timeout = time.Duration(timeoutSeconds) * time.Second
}
return &Provider{
apiKey: apiKey,
apiBase: baseURL,
httpClient: &http.Client{
Timeout: timeout,
},
}
}
// Chat sends messages to the Anthropic Messages API and returns the response.
func (p *Provider) Chat(
ctx context.Context,
messages []Message,
tools []ToolDefinition,
model string,
options map[string]any,
) (*LLMResponse, error) {
if p.apiKey == "" {
return nil, fmt.Errorf("API key not configured")
}
// Build request body
requestBody, err := buildRequestBody(messages, tools, model, options)
if err != nil {
return nil, fmt.Errorf("building request body: %w", err)
}
// Serialize to JSON
jsonBody, err := json.Marshal(requestBody)
if err != nil {
return nil, fmt.Errorf("serializing request body: %w", err)
}
// Build request URL
endpointURL, err := url.JoinPath(p.apiBase, "messages")
if err != nil {
return nil, fmt.Errorf("building endpoint URL: %w", err)
}
// Create HTTP request
req, err := http.NewRequestWithContext(ctx, "POST", endpointURL, bytes.NewReader(jsonBody))
if err != nil {
return nil, fmt.Errorf("creating HTTP request: %w", err)
}
// Set headers
req.Header.Set("Content-Type", "application/json")
req.Header.Set("X-API-Key", p.apiKey) //nolint:canonicalheader // Anthropic API requires exact header name
req.Header.Set("Anthropic-Version", defaultAPIVersion)
// Execute request
resp, err := p.httpClient.Do(req)
if err != nil {
return nil, fmt.Errorf("executing HTTP request: %w", err)
}
defer resp.Body.Close()
// Read response body
body, err := io.ReadAll(resp.Body)
if err != nil {
return nil, fmt.Errorf("reading response body: %w", err)
}
// Check for HTTP errors with detailed messages
switch resp.StatusCode {
case http.StatusUnauthorized:
return nil, fmt.Errorf("authentication failed (401): check your API key")
case http.StatusTooManyRequests:
return nil, fmt.Errorf("rate limited (429): %s", string(body))
case http.StatusBadRequest:
return nil, fmt.Errorf("bad request (400): %s", string(body))
case http.StatusNotFound:
return nil, fmt.Errorf("endpoint not found (404): %s", string(body))
case http.StatusInternalServerError:
return nil, fmt.Errorf("internal server error (500): %s", string(body))
case http.StatusServiceUnavailable:
return nil, fmt.Errorf("service unavailable (503): %s", string(body))
default:
if resp.StatusCode != http.StatusOK {
return nil, fmt.Errorf("API request failed with status %d: %s", resp.StatusCode, string(body))
}
}
// Parse response
return parseResponseBody(body)
}
// GetDefaultModel returns the default model for this provider.
func (p *Provider) GetDefaultModel() string {
return "claude-sonnet-4.6"
}
// buildRequestBody converts internal message format to Anthropic Messages API format.
func buildRequestBody(
messages []Message,
tools []ToolDefinition,
model string,
options map[string]any,
) (map[string]any, error) {
// max_tokens is required and guaranteed by agent loop
maxTokens, ok := asInt(options["max_tokens"])
if !ok {
return nil, fmt.Errorf("max_tokens is required in options")
}
result := map[string]any{
"model": model,
"max_tokens": int64(maxTokens),
"messages": []any{},
}
// Set temperature from options
if temp, ok := asFloat(options["temperature"]); ok {
result["temperature"] = temp
}
// Process messages
var systemPrompt string
var apiMessages []any
for _, msg := range messages {
switch msg.Role {
case "system":
// Accumulate system messages
if systemPrompt != "" {
systemPrompt += "\n\n" + msg.Content
} else {
systemPrompt = msg.Content
}
case "user":
if msg.ToolCallID != "" {
// Tool result message
content := []map[string]any{
{
"type": "tool_result",
"tool_use_id": msg.ToolCallID,
"content": msg.Content,
},
}
apiMessages = append(apiMessages, map[string]any{
"role": "user",
"content": content,
})
} else {
// Regular user message
apiMessages = append(apiMessages, map[string]any{
"role": "user",
"content": msg.Content,
})
}
case "assistant":
content := []any{}
// Add text content if present
if msg.Content != "" {
content = append(content, map[string]any{
"type": "text",
"text": msg.Content,
})
}
// Add tool_use blocks
for _, tc := range msg.ToolCalls {
toolUse := map[string]any{
"type": "tool_use",
"id": tc.ID,
"name": tc.Name,
"input": tc.Arguments,
}
content = append(content, toolUse)
}
apiMessages = append(apiMessages, map[string]any{
"role": "assistant",
"content": content,
})
case "tool":
// Tool result (alternative format)
content := []map[string]any{
{
"type": "tool_result",
"tool_use_id": msg.ToolCallID,
"content": msg.Content,
},
}
apiMessages = append(apiMessages, map[string]any{
"role": "user",
"content": content,
})
}
}
result["messages"] = apiMessages
// Set system prompt if present
if systemPrompt != "" {
result["system"] = systemPrompt
}
// Add tools if present
if len(tools) > 0 {
result["tools"] = buildTools(tools)
}
return result, nil
}
// buildTools converts tool definitions to Anthropic format.
func buildTools(tools []ToolDefinition) []any {
result := make([]any, len(tools))
for i, tool := range tools {
toolDef := map[string]any{
"name": tool.Function.Name,
"description": tool.Function.Description,
"input_schema": tool.Function.Parameters,
}
result[i] = toolDef
}
return result
}
// parseResponseBody parses Anthropic Messages API response.
func parseResponseBody(body []byte) (*LLMResponse, error) {
var resp anthropicMessageResponse
if err := json.Unmarshal(body, &resp); err != nil {
return nil, fmt.Errorf("parsing JSON response: %w", err)
}
// Extract content and tool calls
var content strings.Builder
toolCalls := make([]ToolCall, 0) // Initialize as empty slice (not nil) for consistent JSON serialization
for _, block := range resp.Content {
switch block.Type {
case "text":
content.WriteString(block.Text)
case "tool_use":
argsJSON, _ := json.Marshal(block.Input)
toolCalls = append(toolCalls, ToolCall{
ID: block.ID,
Name: block.Name,
Arguments: block.Input,
Function: &FunctionCall{
Name: block.Name,
Arguments: string(argsJSON),
},
})
}
}
// Map stop_reason
finishReason := "stop"
switch resp.StopReason {
case "tool_use":
finishReason = "tool_calls"
case "max_tokens":
finishReason = "length"
case "end_turn":
finishReason = "stop"
case "stop_sequence":
finishReason = "stop"
}
return &LLMResponse{
Content: content.String(),
ToolCalls: toolCalls,
FinishReason: finishReason,
Usage: &UsageInfo{
PromptTokens: int(resp.Usage.InputTokens),
CompletionTokens: int(resp.Usage.OutputTokens),
TotalTokens: int(resp.Usage.InputTokens + resp.Usage.OutputTokens),
},
}, nil
}
// normalizeBaseURL ensures the base URL is properly formatted.
// It removes /v1 suffix if present (to avoid duplication) and always appends /v1.
// This handles edge cases like "https://api.example.com/v1/proxy" correctly.
func normalizeBaseURL(apiBase string) string {
base := strings.TrimSpace(apiBase)
if base == "" {
return defaultBaseURL
}
// Remove trailing slashes
base = strings.TrimRight(base, "/")
// Remove /v1 suffix if present (will be re-added)
// This prevents duplication for URLs like "https://api.example.com/v1/proxy"
if before, ok := strings.CutSuffix(base, "/v1"); ok {
base = before
}
// Ensure we don't have an empty string after cutting
if base == "" {
return defaultBaseURL
}
// Add /v1 suffix (required by Anthropic Messages API)
return base + "/v1"
}
// Helper functions for type conversion
func asInt(v any) (int, bool) {
switch val := v.(type) {
case int:
return val, true
case float64:
return int(val), true
case int64:
return int(val), true
default:
return 0, false
}
}
func asFloat(v any) (float64, bool) {
switch val := v.(type) {
case float64:
return val, true
case int:
return float64(val), true
case int64:
return float64(val), true
default:
return 0, false
}
}
// Anthropic API response structures
type anthropicMessageResponse struct {
ID string `json:"id"`
Type string `json:"type"`
Role string `json:"role"`
Content []contentBlock `json:"content"`
StopReason string `json:"stop_reason"`
Model string `json:"model"`
Usage usageInfo `json:"usage"`
}
type contentBlock struct {
Type string `json:"type"`
Text string `json:"text,omitempty"`
ID string `json:"id,omitempty"`
Name string `json:"name,omitempty"`
Input map[string]any `json:"input,omitempty"`
}
type usageInfo struct {
InputTokens int64 `json:"input_tokens"`
OutputTokens int64 `json:"output_tokens"`
}
@@ -0,0 +1,622 @@
// PicoClaw - Ultra-lightweight personal AI agent
// License: MIT
//
// Copyright (c) 2026 PicoClaw contributors
package anthropicmessages
import (
"context"
"encoding/json"
"reflect"
"strings"
"testing"
)
func TestBuildRequestBody(t *testing.T) {
tests := []struct {
name string
messages []Message
tools []ToolDefinition
model string
options map[string]any
want map[string]any
wantErr bool
}{
{
name: "basic user message",
messages: []Message{
{Role: "user", Content: "Hello, world!"},
},
model: "test-model",
options: map[string]any{
"max_tokens": 8192,
},
want: map[string]any{
"model": "test-model",
"max_tokens": int64(8192),
"messages": []any{
map[string]any{
"role": "user",
"content": "Hello, world!",
},
},
},
},
{
name: "user and assistant messages",
messages: []Message{
{Role: "user", Content: "What is 2+2?"},
{Role: "assistant", Content: "4"},
},
model: "test-model",
options: map[string]any{
"max_tokens": 8192,
},
want: map[string]any{
"model": "test-model",
"max_tokens": int64(8192),
"messages": []any{
map[string]any{
"role": "user",
"content": "What is 2+2?",
},
map[string]any{
"role": "assistant",
"content": []any{
map[string]any{
"type": "text",
"text": "4",
},
},
},
},
},
},
{
name: "with system message",
messages: []Message{
{Role: "system", Content: "You are a helpful assistant."},
{Role: "user", Content: "Hello"},
},
model: "test-model",
options: map[string]any{
"max_tokens": 8192,
},
want: map[string]any{
"model": "test-model",
"max_tokens": int64(8192),
"system": "You are a helpful assistant.",
"messages": []any{
map[string]any{
"role": "user",
"content": "Hello",
},
},
},
},
{
name: "with custom max_tokens and temperature",
messages: []Message{
{Role: "user", Content: "Test"},
},
model: "test-model",
options: map[string]any{
"max_tokens": 2048,
"temperature": 0.5,
},
want: map[string]any{
"model": "test-model",
"max_tokens": int64(2048),
"temperature": 0.5,
"messages": []any{
map[string]any{
"role": "user",
"content": "Test",
},
},
},
},
{
name: "missing max_tokens returns error",
messages: []Message{
{Role: "user", Content: "Test"},
},
model: "test-model",
options: map[string]any{},
want: nil,
wantErr: true,
},
{
name: "with tools",
messages: []Message{
{Role: "user", Content: "What's the weather?"},
},
tools: []ToolDefinition{
{
Function: ToolFunctionDefinition{
Name: "get_weather",
Description: "Get current weather",
Parameters: map[string]any{
"type": "object",
"properties": map[string]any{
"location": map[string]any{
"type": "string",
"description": "City name",
},
},
},
},
},
},
model: "test-model",
options: map[string]any{
"max_tokens": 8192,
},
want: map[string]any{
"model": "test-model",
"max_tokens": int64(8192),
"messages": []any{
map[string]any{
"role": "user",
"content": "What's the weather?",
},
},
"tools": []any{
map[string]any{
"name": "get_weather",
"description": "Get current weather",
"input_schema": map[string]any{
"type": "object",
"properties": map[string]any{
"location": map[string]any{
"type": "string",
"description": "City name",
},
},
},
},
},
},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got, err := buildRequestBody(tt.messages, tt.tools, tt.model, tt.options)
if (err != nil) != tt.wantErr {
t.Errorf("buildRequestBody() error = %v, wantErr %v", err, tt.wantErr)
return
}
if !reflect.DeepEqual(got, tt.want) {
gotJSON, _ := json.MarshalIndent(got, "", " ")
wantJSON, _ := json.MarshalIndent(tt.want, "", " ")
t.Errorf("buildRequestBody() mismatch:\ngot:\n%s\nwant:\n%s", gotJSON, wantJSON)
}
})
}
}
func TestParseResponseBody(t *testing.T) {
tests := []struct {
name string
body []byte
want *LLMResponse
wantErr bool
}{
{
name: "basic text response",
body: []byte(`{
"id": "msg-123",
"type": "message",
"role": "assistant",
"content": [
{"type": "text", "text": "Hello, how can I help?"}
],
"stop_reason": "end_turn",
"model": "test-model",
"usage": {
"input_tokens": 10,
"output_tokens": 5
}
}`),
want: &LLMResponse{
Content: "Hello, how can I help?",
ToolCalls: []ToolCall{},
FinishReason: "stop",
Usage: &UsageInfo{
PromptTokens: 10,
CompletionTokens: 5,
TotalTokens: 15,
},
Reasoning: "",
ReasoningDetails: nil,
},
wantErr: false,
},
{
name: "response with tool use",
body: []byte(`{
"id": "msg-456",
"type": "message",
"role": "assistant",
"content": [
{"type": "text", "text": "I'll check the weather for you."},
{
"type": "tool_use",
"id": "toolu-123",
"name": "get_weather",
"input": {"location": "Tokyo"}
}
],
"stop_reason": "tool_use",
"model": "test-model",
"usage": {
"input_tokens": 20,
"output_tokens": 15
}
}`),
want: &LLMResponse{
Content: "I'll check the weather for you.",
ToolCalls: []ToolCall{
{
ID: "toolu-123",
Name: "get_weather",
Arguments: map[string]any{
"location": "Tokyo",
},
Function: &FunctionCall{
Name: "get_weather",
Arguments: `{"location":"Tokyo"}`,
},
},
},
FinishReason: "tool_calls",
Usage: &UsageInfo{
PromptTokens: 20,
CompletionTokens: 15,
TotalTokens: 35,
},
Reasoning: "",
ReasoningDetails: nil,
},
wantErr: false,
},
{
name: "invalid JSON",
body: []byte(`invalid json`),
want: nil,
wantErr: true,
},
{
name: "max_tokens stop reason",
body: []byte(`{
"id": "msg-789",
"type": "message",
"role": "assistant",
"content": [
{"type": "text", "text": "Partial response"}
],
"stop_reason": "max_tokens",
"model": "test-model",
"usage": {
"input_tokens": 100,
"output_tokens": 4096
}
}`),
want: &LLMResponse{
Content: "Partial response",
ToolCalls: []ToolCall{},
FinishReason: "length",
Usage: &UsageInfo{
PromptTokens: 100,
CompletionTokens: 4096,
TotalTokens: 4196,
},
Reasoning: "",
ReasoningDetails: nil,
},
wantErr: false,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got, err := parseResponseBody(tt.body)
if (err != nil) != tt.wantErr {
t.Errorf("parseResponseBody() error = %v, wantErr %v", err, tt.wantErr)
return
}
if err != nil {
return
}
// Compare individual fields
if got.Content != tt.want.Content {
t.Errorf("Content = %q, want %q", got.Content, tt.want.Content)
}
if got.FinishReason != tt.want.FinishReason {
t.Errorf("FinishReason = %q, want %q", got.FinishReason, tt.want.FinishReason)
}
if got.Usage == nil && tt.want.Usage != nil {
t.Errorf("Usage = nil, want non-nil")
} else if got.Usage != nil && tt.want.Usage == nil {
t.Errorf("Usage = non-nil, want nil")
} else if got.Usage != nil && tt.want.Usage != nil {
if got.Usage.PromptTokens != tt.want.Usage.PromptTokens {
t.Errorf("Usage.PromptTokens = %d, want %d", got.Usage.PromptTokens, tt.want.Usage.PromptTokens)
}
if got.Usage.CompletionTokens != tt.want.Usage.CompletionTokens {
t.Errorf("Usage.CompletionTokens = %d, want %d",
got.Usage.CompletionTokens, tt.want.Usage.CompletionTokens)
}
if got.Usage.TotalTokens != tt.want.Usage.TotalTokens {
t.Errorf("Usage.TotalTokens = %d, want %d", got.Usage.TotalTokens, tt.want.Usage.TotalTokens)
}
}
if len(got.ToolCalls) != len(tt.want.ToolCalls) {
t.Errorf("ToolCalls length = %d, want %d", len(got.ToolCalls), len(tt.want.ToolCalls))
} else {
for i := range got.ToolCalls {
if got.ToolCalls[i].ID != tt.want.ToolCalls[i].ID {
t.Errorf("ToolCalls[%d].ID = %q, want %q",
i, got.ToolCalls[i].ID, tt.want.ToolCalls[i].ID)
}
if got.ToolCalls[i].Name != tt.want.ToolCalls[i].Name {
t.Errorf("ToolCalls[%d].Name = %q, want %q",
i, got.ToolCalls[i].Name, tt.want.ToolCalls[i].Name)
}
}
}
})
}
}
func TestNormalizeBaseURL(t *testing.T) {
tests := []struct {
name string
apiBase string
expected string
}{
{
name: "empty string defaults to official API",
apiBase: "",
expected: "https://api.anthropic.com/v1",
},
{
name: "URL without /v1 gets it appended",
apiBase: "https://api.example.com/anthropic",
expected: "https://api.example.com/anthropic/v1",
},
{
name: "URL with /v1 remains unchanged",
apiBase: "https://api.example.com/v1",
expected: "https://api.example.com/v1",
},
{
name: "URL with trailing slash gets cleaned",
apiBase: "https://api.example.com/anthropic/",
expected: "https://api.example.com/anthropic/v1",
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got := normalizeBaseURL(tt.apiBase)
if got != tt.expected {
t.Errorf("normalizeBaseURL(%q) = %q, want %q", tt.apiBase, got, tt.expected)
}
})
}
}
func TestNewProvider(t *testing.T) {
provider := NewProvider("test-key", "https://api.example.com")
if provider == nil {
t.Fatal("NewProvider() returned nil")
}
if provider.apiKey != "test-key" {
t.Errorf("provider.apiKey = %q, want %q", provider.apiKey, "test-key")
}
if provider.apiBase != "https://api.example.com/v1" {
t.Errorf("provider.apiBase = %q, want %q", provider.apiBase, "https://api.example.com/v1")
}
}
func TestGetDefaultModel(t *testing.T) {
provider := NewProvider("test-key", "")
got := provider.GetDefaultModel()
expected := "claude-sonnet-4.6"
if got != expected {
t.Errorf("GetDefaultModel() = %q, want %q", got, expected)
}
}
// TestBuildRequestBodyEdgeCases tests edge cases for buildRequestBody.
func TestBuildRequestBodyEdgeCases(t *testing.T) {
tests := []struct {
name string
messages []Message
tools []ToolDefinition
model string
options map[string]any
wantErr bool
}{
{
name: "empty message list",
messages: []Message{},
model: "test-model",
options: map[string]any{
"max_tokens": 8192,
},
wantErr: false,
},
{
name: "very long system message",
messages: []Message{
{Role: "system", Content: strings.Repeat("This is a very long system prompt. ", 1000)},
{Role: "user", Content: "Hello"},
},
model: "test-model",
options: map[string]any{
"max_tokens": 8192,
},
wantErr: false,
},
{
name: "multiple consecutive system messages",
messages: []Message{
{Role: "system", Content: "First system message"},
{Role: "system", Content: "Second system message"},
{Role: "system", Content: "Third system message"},
{Role: "user", Content: "Hello"},
},
model: "test-model",
options: map[string]any{
"max_tokens": 8192,
},
wantErr: false,
},
{
name: "tool result without tool call",
messages: []Message{
{Role: "user", Content: "Use a tool"},
{Role: "assistant", Content: "", ToolCalls: []ToolCall{
{ID: "tool-1", Name: "test_tool", Arguments: map[string]any{"arg": "value"}},
}},
{Role: "user", ToolCallID: "tool-1", Content: "Tool result"},
},
model: "test-model",
options: map[string]any{
"max_tokens": 8192,
},
wantErr: false,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got, err := buildRequestBody(tt.messages, tt.tools, tt.model, tt.options)
if (err != nil) != tt.wantErr {
t.Errorf("buildRequestBody() error = %v, wantErr %v", err, tt.wantErr)
return
}
if err != nil {
return
}
// Verify basic structure
if got == nil {
t.Error("buildRequestBody() returned nil")
return
}
if got["model"] != tt.model {
t.Errorf("model = %v, want %v", got["model"], tt.model)
}
})
}
}
// TestParseResponseBodyEdgeCases tests edge cases for parseResponseBody.
func TestParseResponseBodyEdgeCases(t *testing.T) {
tests := []struct {
name string
body []byte
wantErr bool
check func(*testing.T, *LLMResponse)
}{
{
name: "empty content blocks",
body: []byte(`{
"id": "msg-empty",
"type": "message",
"role": "assistant",
"content": [],
"stop_reason": "end_turn",
"model": "test-model",
"usage": {"input_tokens": 5, "output_tokens": 0}
}`),
wantErr: false,
check: func(t *testing.T, resp *LLMResponse) {
if resp.Content != "" {
t.Errorf("Content = %q, want empty string", resp.Content)
}
if len(resp.ToolCalls) != 0 {
t.Errorf("ToolCalls length = %d, want 0", len(resp.ToolCalls))
}
},
},
{
name: "multiple tool use blocks",
body: []byte(`{
"id": "msg-multi",
"type": "message",
"role": "assistant",
"content": [
{"type": "tool_use", "id": "tool-1", "name": "func1", "input": {"arg": "val1"}},
{"type": "tool_use", "id": "tool-2", "name": "func2", "input": {"arg": "val2"}}
],
"stop_reason": "tool_use",
"model": "test-model",
"usage": {"input_tokens": 10, "output_tokens": 20}
}`),
wantErr: false,
check: func(t *testing.T, resp *LLMResponse) {
if len(resp.ToolCalls) != 2 {
t.Errorf("ToolCalls length = %d, want 2", len(resp.ToolCalls))
}
},
},
{
name: "malformed JSON response",
body: []byte(`{invalid json`),
wantErr: true,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got, err := parseResponseBody(tt.body)
if (err != nil) != tt.wantErr {
t.Errorf("parseResponseBody() error = %v, wantErr %v", err, tt.wantErr)
return
}
if tt.check != nil && err == nil {
tt.check(t, got)
}
})
}
}
// TestProviderChatErrors tests error handling in Chat.
// Note: apiBase check removed as it's dead code - normalizeBaseURL() always provides a default.
func TestProviderChatErrors(t *testing.T) {
tests := []struct {
name string
apiKey string
messages []Message
wantErrMsg string
}{
{
name: "missing API key",
apiKey: "",
messages: []Message{{Role: "user", Content: "Test"}},
wantErrMsg: "API key not configured",
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
// Create provider using constructor to ensure proper initialization
provider := NewProvider(tt.apiKey, "https://api.example.com")
_, err := provider.Chat(context.Background(), tt.messages, nil, "test-model", nil)
if err == nil {
t.Fatal("Chat() expected error, got nil")
}
if err.Error() != tt.wantErrMsg {
t.Errorf("Chat() error = %q, want %q", err.Error(), tt.wantErrMsg)
}
})
}
}
+18 -1
View File
@@ -10,6 +10,7 @@ import (
"strings"
"github.com/sipeed/picoclaw/pkg/config"
anthropicmessages "github.com/sipeed/picoclaw/pkg/providers/anthropic_messages"
)
// createClaudeAuthProvider creates a Claude provider using OAuth credentials from auth store.
@@ -53,7 +54,8 @@ func ExtractProtocol(model string) (protocol, modelID string) {
// CreateProviderFromConfig creates a provider based on the ModelConfig.
// It uses the protocol prefix in the Model field to determine which provider to create.
// Supported protocols: openai, litellm, anthropic, antigravity, claude-cli, codex-cli, github-copilot
// Supported protocols: openai, litellm, anthropic, anthropic-messages, antigravity,
// claude-cli, codex-cli, github-copilot
// Returns the provider, the model ID (without protocol prefix), and any error.
func CreateProviderFromConfig(cfg *config.ModelConfig) (LLMProvider, string, error) {
if cfg == nil {
@@ -137,6 +139,21 @@ func CreateProviderFromConfig(cfg *config.ModelConfig) (LLMProvider, string, err
cfg.RequestTimeout,
), modelID, nil
case "anthropic-messages":
// Anthropic Messages API with native format (HTTP-based, no SDK)
apiBase := cfg.APIBase
if apiBase == "" {
apiBase = "https://api.anthropic.com/v1"
}
if cfg.APIKey == "" {
return nil, "", fmt.Errorf("api_key is required for anthropic-messages protocol (model: %s)", cfg.Model)
}
return anthropicmessages.NewProviderWithTimeout(
cfg.APIKey,
apiBase,
cfg.RequestTimeout,
), modelID, nil
case "antigravity":
return NewAntigravityProvider(), modelID, nil