feat: add OpenCode and Antigravity CLI providers
Adds two new free CLI-based LLM providers: - **OpenCode**: Uses the opencode CLI (https://github.com/opencode-ai/opencode) with non-interactive JSON output mode (-p, -f json, -q flags) - **Antigravity/Gemini CLI**: Uses the gemini CLI (https://github.com/google-gemini/gemini-cli) with headless mode Both follow the same subprocess pattern as ClaudeCliProvider. Provider names in config: - opencode / open-code - antigravity / gemini-cli Closes #68
This commit is contained in:
Atharva
parent
e7f15afdd4
commit
b1230aec51
5 changed files with 602 additions and 11 deletions
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@ -6,6 +6,11 @@
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# OPENAI_API_KEY=sk-xxx
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# GEMINI_API_KEY=xxx
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# ── CLI-based Providers (free) ───────────
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# Set provider to "opencode" or "antigravity" in config.json
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# OpenCode: install from https://github.com/opencode-ai/opencode
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# Antigravity/Gemini CLI: install from https://github.com/google-gemini/gemini-cli
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# ── Chat Channel ──────────────────────────
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# TELEGRAM_BOT_TOKEN=123456:ABC...
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# DISCORD_BOT_TOKEN=xxx
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@ -180,6 +180,8 @@ type ProvidersConfig struct {
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ShengSuanYun ProviderConfig `json:"shengsuanyun"`
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DeepSeek ProviderConfig `json:"deepseek"`
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GitHubCopilot ProviderConfig `json:"github_copilot"`
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OpenCode ProviderConfig `json:"opencode"`
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Antigravity ProviderConfig `json:"antigravity"`
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}
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type ProviderConfig struct {
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@ -303,8 +305,13 @@ func DefaultConfig() *Config {
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VLLM: ProviderConfig{},
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Gemini: ProviderConfig{},
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Nvidia: ProviderConfig{},
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Ollama: ProviderConfig{},
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Moonshot: ProviderConfig{},
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ShengSuanYun: ProviderConfig{},
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DeepSeek: ProviderConfig{},
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GitHubCopilot: ProviderConfig{},
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OpenCode: ProviderConfig{},
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Antigravity: ProviderConfig{},
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},
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Gateway: GatewayConfig{
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Host: "0.0.0.0",
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286
pkg/providers/antigravity_provider.go
Normal file
286
pkg/providers/antigravity_provider.go
Normal file
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@ -0,0 +1,286 @@
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package providers
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import (
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"bytes"
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"context"
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"encoding/json"
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"fmt"
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"os/exec"
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"strings"
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)
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// AntigravityProvider implements LLMProvider using the Gemini CLI (Antigravity) as a subprocess.
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// Antigravity/Gemini CLI (https://github.com/google-gemini/gemini-cli) is a free,
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// open-source AI coding agent that runs in the terminal.
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type AntigravityProvider struct {
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command string
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workspace string
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}
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// NewAntigravityProvider creates a new Antigravity/Gemini CLI provider.
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func NewAntigravityProvider(workspace string) *AntigravityProvider {
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return &AntigravityProvider{
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command: "gemini",
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workspace: workspace,
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}
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}
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// Chat implements LLMProvider.Chat by executing the gemini CLI.
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func (p *AntigravityProvider) Chat(ctx context.Context, messages []Message, tools []ToolDefinition, model string, options map[string]interface{}) (*LLMResponse, error) {
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systemPrompt := p.buildSystemPrompt(messages, tools)
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prompt := p.messagesToPrompt(messages)
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if systemPrompt != "" {
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prompt = systemPrompt + "\n\n" + prompt
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}
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// gemini -p "prompt" --json-log (headless/non-interactive mode)
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args := []string{"-p", prompt}
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// Use sandbox=false to auto-approve permissions in non-interactive mode
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args = append(args, "--sandbox", "false")
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cmd := exec.CommandContext(ctx, p.command, args...)
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if p.workspace != "" {
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cmd.Dir = p.workspace
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}
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var stdout, stderr bytes.Buffer
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cmd.Stdout = &stdout
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cmd.Stderr = &stderr
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if err := cmd.Run(); err != nil {
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if stderrStr := stderr.String(); stderrStr != "" {
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return nil, fmt.Errorf("antigravity/gemini cli error: %s", stderrStr)
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}
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return nil, fmt.Errorf("antigravity/gemini cli error: %w", err)
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}
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return p.parseAntigravityResponse(stdout.String())
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}
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// GetDefaultModel returns the default model identifier.
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func (p *AntigravityProvider) GetDefaultModel() string {
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return "antigravity"
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}
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// messagesToPrompt converts messages to a CLI-compatible prompt string.
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func (p *AntigravityProvider) messagesToPrompt(messages []Message) string {
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var parts []string
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for _, msg := range messages {
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switch msg.Role {
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case "system":
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// handled separately in buildSystemPrompt
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case "user":
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parts = append(parts, "User: "+msg.Content)
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case "assistant":
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parts = append(parts, "Assistant: "+msg.Content)
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case "tool":
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parts = append(parts, fmt.Sprintf("[Tool Result for %s]: %s", msg.ToolCallID, msg.Content))
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}
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}
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// Simplify single user message
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if len(parts) == 1 && strings.HasPrefix(parts[0], "User: ") {
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return strings.TrimPrefix(parts[0], "User: ")
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}
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return strings.Join(parts, "\n")
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}
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// buildSystemPrompt combines system messages and tool definitions.
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func (p *AntigravityProvider) buildSystemPrompt(messages []Message, tools []ToolDefinition) string {
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var parts []string
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for _, msg := range messages {
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if msg.Role == "system" {
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parts = append(parts, msg.Content)
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}
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}
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if len(tools) > 0 {
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parts = append(parts, p.buildToolsPrompt(tools))
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}
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return strings.Join(parts, "\n\n")
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}
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// buildToolsPrompt creates the tool definitions section for the system prompt.
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func (p *AntigravityProvider) buildToolsPrompt(tools []ToolDefinition) string {
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var sb strings.Builder
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sb.WriteString("## Available Tools\n\n")
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sb.WriteString("When you need to use a tool, respond with ONLY a JSON object:\n\n")
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sb.WriteString("```json\n")
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sb.WriteString(`{"tool_calls":[{"id":"call_xxx","type":"function","function":{"name":"tool_name","arguments":"{...}"}}]}`)
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sb.WriteString("\n```\n\n")
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sb.WriteString("CRITICAL: The 'arguments' field MUST be a JSON-encoded STRING.\n\n")
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sb.WriteString("### Tool Definitions:\n\n")
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for _, tool := range tools {
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if tool.Type != "function" {
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continue
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}
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sb.WriteString(fmt.Sprintf("#### %s\n", tool.Function.Name))
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if tool.Function.Description != "" {
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sb.WriteString(fmt.Sprintf("Description: %s\n", tool.Function.Description))
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}
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if len(tool.Function.Parameters) > 0 {
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paramsJSON, _ := json.Marshal(tool.Function.Parameters)
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sb.WriteString(fmt.Sprintf("Parameters:\n```json\n%s\n```\n", string(paramsJSON)))
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}
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sb.WriteString("\n")
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}
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return sb.String()
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}
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// parseAntigravityResponse parses the output from the gemini CLI.
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func (p *AntigravityProvider) parseAntigravityResponse(output string) (*LLMResponse, error) {
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// Try to parse as structured JSON first
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var resp antigravityJSONResponse
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if err := json.Unmarshal([]byte(output), &resp); err != nil {
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// If JSON parsing fails, treat as plain text response
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trimmed := strings.TrimSpace(output)
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if trimmed == "" {
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return &LLMResponse{
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Content: "",
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FinishReason: "stop",
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}, nil
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}
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// Try to find JSON object in the output
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start := strings.Index(trimmed, "{")
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if start >= 0 {
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if err2 := json.Unmarshal([]byte(trimmed[start:]), &resp); err2 != nil {
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// Return the raw text as content
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return &LLMResponse{
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Content: trimmed,
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FinishReason: "stop",
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}, nil
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}
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} else {
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// Return raw text as content
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return &LLMResponse{
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Content: trimmed,
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FinishReason: "stop",
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}, nil
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}
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}
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content := resp.Result
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if content == "" {
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content = resp.Message
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}
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if content == "" {
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content = resp.Response
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}
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if content == "" {
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content = resp.Text
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}
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toolCalls := p.extractToolCalls(content)
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finishReason := "stop"
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if len(toolCalls) > 0 {
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finishReason = "tool_calls"
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content = p.stripToolCallsJSON(content)
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}
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var usage *UsageInfo
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if resp.Usage.InputTokens > 0 || resp.Usage.OutputTokens > 0 {
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usage = &UsageInfo{
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PromptTokens: resp.Usage.InputTokens,
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CompletionTokens: resp.Usage.OutputTokens,
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TotalTokens: resp.Usage.InputTokens + resp.Usage.OutputTokens,
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}
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}
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return &LLMResponse{
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Content: strings.TrimSpace(content),
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ToolCalls: toolCalls,
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FinishReason: finishReason,
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Usage: usage,
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}, nil
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}
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// extractToolCalls parses tool call JSON from the response text.
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func (p *AntigravityProvider) extractToolCalls(text string) []ToolCall {
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start := strings.Index(text, `{"tool_calls"`)
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if start == -1 {
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return nil
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}
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end := findMatchingBrace(text, start)
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if end == start {
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return nil
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}
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jsonStr := text[start:end]
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var wrapper struct {
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ToolCalls []struct {
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ID string `json:"id"`
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Type string `json:"type"`
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Function struct {
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Name string `json:"name"`
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Arguments string `json:"arguments"`
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} `json:"function"`
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} `json:"tool_calls"`
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}
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if err := json.Unmarshal([]byte(jsonStr), &wrapper); err != nil {
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return nil
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}
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var result []ToolCall
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for _, tc := range wrapper.ToolCalls {
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var args map[string]interface{}
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json.Unmarshal([]byte(tc.Function.Arguments), &args)
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result = append(result, ToolCall{
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ID: tc.ID,
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Type: tc.Type,
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Name: tc.Function.Name,
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Arguments: args,
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Function: &FunctionCall{
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Name: tc.Function.Name,
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Arguments: tc.Function.Arguments,
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},
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})
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}
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return result
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}
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// stripToolCallsJSON removes tool call JSON from response text.
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func (p *AntigravityProvider) stripToolCallsJSON(text string) string {
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start := strings.Index(text, `{"tool_calls"`)
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if start == -1 {
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return text
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}
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end := findMatchingBrace(text, start)
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if end == start {
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return text
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}
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return strings.TrimSpace(text[:start] + text[end:])
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}
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// antigravityJSONResponse represents the JSON output from the gemini/antigravity CLI.
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type antigravityJSONResponse struct {
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Result string `json:"result"`
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Message string `json:"message"`
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Response string `json:"response"`
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Text string `json:"text"`
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IsError bool `json:"is_error"`
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Usage antigravityUsageInfo `json:"usage"`
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}
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// antigravityUsageInfo represents token usage from the antigravity CLI response.
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type antigravityUsageInfo struct {
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InputTokens int `json:"input_tokens"`
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OutputTokens int `json:"output_tokens"`
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}
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@ -331,7 +331,18 @@ func CreateProvider(cfg *config.Config) (LLMProvider, error) {
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apiBase = "localhost:4321"
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}
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return NewGitHubCopilotProvider(apiBase, cfg.Providers.GitHubCopilot.ConnectMode, model)
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case "opencode", "open-code":
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workspace := cfg.Agents.Defaults.Workspace
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if workspace == "" {
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workspace = "."
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}
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return NewOpenCodeProvider(workspace), nil
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case "antigravity", "gemini-cli":
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workspace := cfg.Agents.Defaults.Workspace
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if workspace == "" {
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workspace = "."
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}
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return NewAntigravityProvider(workspace), nil
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}
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}
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282
pkg/providers/opencode_provider.go
Normal file
282
pkg/providers/opencode_provider.go
Normal file
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@ -0,0 +1,282 @@
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package providers
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import (
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"bytes"
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"context"
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"encoding/json"
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"fmt"
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"os/exec"
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"strings"
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)
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// OpenCodeProvider implements LLMProvider using the opencode CLI as a subprocess.
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// OpenCode (https://github.com/opencode-ai/opencode) is a free, open-source
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// AI coding agent built for the terminal.
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type OpenCodeProvider struct {
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command string
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workspace string
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}
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// NewOpenCodeProvider creates a new OpenCode CLI provider.
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func NewOpenCodeProvider(workspace string) *OpenCodeProvider {
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return &OpenCodeProvider{
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command: "opencode",
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workspace: workspace,
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}
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}
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// Chat implements LLMProvider.Chat by executing the opencode CLI.
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func (p *OpenCodeProvider) Chat(ctx context.Context, messages []Message, tools []ToolDefinition, model string, options map[string]interface{}) (*LLMResponse, error) {
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systemPrompt := p.buildSystemPrompt(messages, tools)
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prompt := p.messagesToPrompt(messages)
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if systemPrompt != "" {
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prompt = systemPrompt + "\n\n" + prompt
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}
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// opencode -p "prompt" -f json -q
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args := []string{"-p", prompt, "-f", "json", "-q"}
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if p.workspace != "" {
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args = append([]string{"-c", p.workspace}, args...)
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}
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cmd := exec.CommandContext(ctx, p.command, args...)
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if p.workspace != "" {
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cmd.Dir = p.workspace
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}
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var stdout, stderr bytes.Buffer
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cmd.Stdout = &stdout
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cmd.Stderr = &stderr
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if err := cmd.Run(); err != nil {
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if stderrStr := stderr.String(); stderrStr != "" {
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return nil, fmt.Errorf("opencode cli error: %s", stderrStr)
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}
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return nil, fmt.Errorf("opencode cli error: %w", err)
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}
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return p.parseOpenCodeResponse(stdout.String())
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}
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// GetDefaultModel returns the default model identifier.
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func (p *OpenCodeProvider) GetDefaultModel() string {
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return "opencode"
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}
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// messagesToPrompt converts messages to a CLI-compatible prompt string.
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func (p *OpenCodeProvider) messagesToPrompt(messages []Message) string {
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var parts []string
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for _, msg := range messages {
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switch msg.Role {
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case "system":
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// handled separately in buildSystemPrompt
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case "user":
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parts = append(parts, "User: "+msg.Content)
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case "assistant":
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parts = append(parts, "Assistant: "+msg.Content)
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case "tool":
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parts = append(parts, fmt.Sprintf("[Tool Result for %s]: %s", msg.ToolCallID, msg.Content))
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}
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}
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// Simplify single user message
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if len(parts) == 1 && strings.HasPrefix(parts[0], "User: ") {
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return strings.TrimPrefix(parts[0], "User: ")
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}
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return strings.Join(parts, "\n")
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}
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// buildSystemPrompt combines system messages and tool definitions.
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func (p *OpenCodeProvider) buildSystemPrompt(messages []Message, tools []ToolDefinition) string {
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var parts []string
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for _, msg := range messages {
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if msg.Role == "system" {
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parts = append(parts, msg.Content)
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}
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}
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if len(tools) > 0 {
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parts = append(parts, p.buildToolsPrompt(tools))
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}
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return strings.Join(parts, "\n\n")
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}
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// buildToolsPrompt creates the tool definitions section for the system prompt.
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func (p *OpenCodeProvider) buildToolsPrompt(tools []ToolDefinition) string {
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var sb strings.Builder
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sb.WriteString("## Available Tools\n\n")
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sb.WriteString("When you need to use a tool, respond with ONLY a JSON object:\n\n")
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sb.WriteString("```json\n")
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sb.WriteString(`{"tool_calls":[{"id":"call_xxx","type":"function","function":{"name":"tool_name","arguments":"{...}"}}]}`)
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sb.WriteString("\n```\n\n")
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sb.WriteString("CRITICAL: The 'arguments' field MUST be a JSON-encoded STRING.\n\n")
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sb.WriteString("### Tool Definitions:\n\n")
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for _, tool := range tools {
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if tool.Type != "function" {
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continue
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}
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sb.WriteString(fmt.Sprintf("#### %s\n", tool.Function.Name))
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if tool.Function.Description != "" {
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sb.WriteString(fmt.Sprintf("Description: %s\n", tool.Function.Description))
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}
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if len(tool.Function.Parameters) > 0 {
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paramsJSON, _ := json.Marshal(tool.Function.Parameters)
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sb.WriteString(fmt.Sprintf("Parameters:\n```json\n%s\n```\n", string(paramsJSON)))
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}
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sb.WriteString("\n")
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}
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||||
|
||||
return sb.String()
|
||||
}
|
||||
|
||||
// parseOpenCodeResponse parses the JSON output from the opencode CLI.
|
||||
func (p *OpenCodeProvider) parseOpenCodeResponse(output string) (*LLMResponse, error) {
|
||||
// OpenCode JSON output format - try to parse as structured JSON first
|
||||
var resp openCodeJSONResponse
|
||||
if err := json.Unmarshal([]byte(output), &resp); err != nil {
|
||||
// If JSON parsing fails, try to find JSON in the output
|
||||
trimmed := strings.TrimSpace(output)
|
||||
if trimmed == "" {
|
||||
return &LLMResponse{
|
||||
Content: "",
|
||||
FinishReason: "stop",
|
||||
}, nil
|
||||
}
|
||||
|
||||
// Try to find JSON object in output
|
||||
start := strings.Index(trimmed, "{")
|
||||
if start >= 0 {
|
||||
if err2 := json.Unmarshal([]byte(trimmed[start:]), &resp); err2 != nil {
|
||||
// Return the raw text as content
|
||||
return &LLMResponse{
|
||||
Content: trimmed,
|
||||
FinishReason: "stop",
|
||||
}, nil
|
||||
}
|
||||
} else {
|
||||
// Return raw text as content
|
||||
return &LLMResponse{
|
||||
Content: trimmed,
|
||||
FinishReason: "stop",
|
||||
}, nil
|
||||
}
|
||||
}
|
||||
|
||||
content := resp.Result
|
||||
if content == "" {
|
||||
content = resp.Message
|
||||
}
|
||||
if content == "" {
|
||||
content = resp.Response
|
||||
}
|
||||
|
||||
toolCalls := p.extractToolCalls(content)
|
||||
|
||||
finishReason := "stop"
|
||||
if len(toolCalls) > 0 {
|
||||
finishReason = "tool_calls"
|
||||
content = p.stripToolCallsJSON(content)
|
||||
}
|
||||
|
||||
var usage *UsageInfo
|
||||
if resp.Usage.InputTokens > 0 || resp.Usage.OutputTokens > 0 {
|
||||
usage = &UsageInfo{
|
||||
PromptTokens: resp.Usage.InputTokens,
|
||||
CompletionTokens: resp.Usage.OutputTokens,
|
||||
TotalTokens: resp.Usage.InputTokens + resp.Usage.OutputTokens,
|
||||
}
|
||||
}
|
||||
|
||||
return &LLMResponse{
|
||||
Content: strings.TrimSpace(content),
|
||||
ToolCalls: toolCalls,
|
||||
FinishReason: finishReason,
|
||||
Usage: usage,
|
||||
}, nil
|
||||
}
|
||||
|
||||
// extractToolCalls parses tool call JSON from the response text.
|
||||
func (p *OpenCodeProvider) extractToolCalls(text string) []ToolCall {
|
||||
start := strings.Index(text, `{"tool_calls"`)
|
||||
if start == -1 {
|
||||
return nil
|
||||
}
|
||||
|
||||
end := findMatchingBrace(text, start)
|
||||
if end == start {
|
||||
return nil
|
||||
}
|
||||
|
||||
jsonStr := text[start:end]
|
||||
|
||||
var wrapper struct {
|
||||
ToolCalls []struct {
|
||||
ID string `json:"id"`
|
||||
Type string `json:"type"`
|
||||
Function struct {
|
||||
Name string `json:"name"`
|
||||
Arguments string `json:"arguments"`
|
||||
} `json:"function"`
|
||||
} `json:"tool_calls"`
|
||||
}
|
||||
|
||||
if err := json.Unmarshal([]byte(jsonStr), &wrapper); err != nil {
|
||||
return nil
|
||||
}
|
||||
|
||||
var result []ToolCall
|
||||
for _, tc := range wrapper.ToolCalls {
|
||||
var args map[string]interface{}
|
||||
json.Unmarshal([]byte(tc.Function.Arguments), &args)
|
||||
|
||||
result = append(result, ToolCall{
|
||||
ID: tc.ID,
|
||||
Type: tc.Type,
|
||||
Name: tc.Function.Name,
|
||||
Arguments: args,
|
||||
Function: &FunctionCall{
|
||||
Name: tc.Function.Name,
|
||||
Arguments: tc.Function.Arguments,
|
||||
},
|
||||
})
|
||||
}
|
||||
|
||||
return result
|
||||
}
|
||||
|
||||
// stripToolCallsJSON removes tool call JSON from response text.
|
||||
func (p *OpenCodeProvider) stripToolCallsJSON(text string) string {
|
||||
start := strings.Index(text, `{"tool_calls"`)
|
||||
if start == -1 {
|
||||
return text
|
||||
}
|
||||
|
||||
end := findMatchingBrace(text, start)
|
||||
if end == start {
|
||||
return text
|
||||
}
|
||||
|
||||
return strings.TrimSpace(text[:start] + text[end:])
|
||||
}
|
||||
|
||||
// openCodeJSONResponse represents the JSON output from the opencode CLI.
|
||||
type openCodeJSONResponse struct {
|
||||
Result string `json:"result"`
|
||||
Message string `json:"message"`
|
||||
Response string `json:"response"`
|
||||
IsError bool `json:"is_error"`
|
||||
Usage openCodeUsageInfo `json:"usage"`
|
||||
}
|
||||
|
||||
// openCodeUsageInfo represents token usage from the opencode CLI response.
|
||||
type openCodeUsageInfo struct {
|
||||
InputTokens int `json:"input_tokens"`
|
||||
OutputTokens int `json:"output_tokens"`
|
||||
}
|
||||
Loading…
Add table
Reference in a new issue