| 1 | package plugin |
| 2 | |
| 3 | import ( |
| 4 | "context" |
| 5 | "encoding/json" |
| 6 | "fmt" |
| 7 | "strings" |
| 8 | ) |
| 9 | |
| 10 | // Prompt is an MCP prompt exposed by a server. It surfaces in the chat TUI as a |
| 11 | // slash command "/mcp__<server>__<prompt>"; running it fetches the rendered |
| 12 | // prompt and sends it to the model as a turn. |
| 13 | type Prompt struct { |
| 14 | Name string // "mcp__<server>__<prompt>" — the slash-command body |
| 15 | Server string // owning server name |
| 16 | Raw string // original prompt name for prompts/get |
| 17 | Description string // human-readable summary |
| 18 | Args []PromptArg // declared arguments, in order |
| 19 | client *Client |
| 20 | } |
| 21 | |
| 22 | // PromptArg is one declared prompt argument. Reasonix maps space-separated |
| 23 | // positional command arguments onto these in order, matching Claude Code. |
| 24 | type PromptArg struct { |
| 25 | Name string `json:"name"` |
| 26 | Description string `json:"description"` |
| 27 | Required bool `json:"required"` |
| 28 | } |
| 29 | |
| 30 | // Get fetches the prompt with the given arguments and flattens its returned |
| 31 | // messages into a single text block to send to the model. |
| 32 | func (p Prompt) Get(ctx context.Context, args map[string]string) (string, error) { |
| 33 | return p.client.getPrompt(ctx, p.Raw, args) |
| 34 | } |
| 35 | |
| 36 | func (c *Client) listPrompts(ctx context.Context) ([]Prompt, error) { |
| 37 | res, err := c.call(ctx, "prompts/list", map[string]any{}) |
| 38 | if err != nil { |
| 39 | return nil, err |
| 40 | } |
| 41 | var out struct { |
| 42 | Prompts []struct { |
| 43 | Name string `json:"name"` |
| 44 | Description string `json:"description"` |
| 45 | Arguments []PromptArg `json:"arguments"` |
| 46 | } `json:"prompts"` |
| 47 | } |
| 48 | if err := json.Unmarshal(res, &out); err != nil { |
| 49 | return nil, fmt.Errorf("plugin %q: decode prompts/list: %w", c.name, err) |
| 50 | } |
| 51 | prompts := make([]Prompt, 0, len(out.Prompts)) |
| 52 | for _, p := range out.Prompts { |
| 53 | prompts = append(prompts, Prompt{ |
| 54 | Name: "mcp__" + normalizeName(c.name) + "__" + normalizeName(p.Name), |
| 55 | Server: c.name, |
| 56 | Raw: p.Name, |
| 57 | Description: p.Description, |
| 58 | Args: p.Arguments, |
| 59 | client: c, |
| 60 | }) |
| 61 | } |
| 62 | return prompts, nil |
| 63 | } |
| 64 | |
| 65 | func (c *Client) getPrompt(ctx context.Context, name string, args map[string]string) (string, error) { |
| 66 | params := map[string]any{"name": name} |
| 67 | if len(args) > 0 { |
| 68 | params["arguments"] = args |
| 69 | } |
| 70 | res, err := c.call(ctx, "prompts/get", params) |
| 71 | if err != nil { |
| 72 | return "", err |
| 73 | } |
| 74 | var out struct { |
| 75 | Messages []struct { |
| 76 | Role string `json:"role"` |
| 77 | Content struct { |
| 78 | Type string `json:"type"` |
| 79 | Text string `json:"text"` |
| 80 | } `json:"content"` |
| 81 | } `json:"messages"` |
| 82 | } |
| 83 | if err := json.Unmarshal(res, &out); err != nil { |
| 84 | return "", fmt.Errorf("plugin %q: decode prompts/get: %w", c.name, err) |
| 85 | } |
| 86 | var sb strings.Builder |
| 87 | for _, m := range out.Messages { |
| 88 | if m.Content.Type == "text" && m.Content.Text != "" { |
| 89 | if sb.Len() > 0 { |
| 90 | sb.WriteString("\n\n") |
| 91 | } |
| 92 | sb.WriteString(m.Content.Text) |
| 93 | } |
| 94 | } |
| 95 | return sb.String(), nil |
| 96 | } |
| 97 |