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package agentloop
import (
"context"
"encoding/json"
"errors"
"fmt"
"github.com/thepeterstone/claudomator/internal/agentchannel"
"github.com/thepeterstone/claudomator/internal/provider"
"github.com/thepeterstone/claudomator/internal/sandbox"
)
// agentToolSpecs returns the eight tools available to the loop: the four
// agent back-channel tools (mirroring the MCP tools ContainerRunner exposes)
// plus the four sandbox tools, as provider-neutral ToolSpecs. Ported verbatim
// (same names/descriptions/JSON schemas) from the former
// executor.agentToolDefs (internal/executor/localtools.go).
func agentToolSpecs() []provider.ToolSpec {
strProp := func(desc string) map[string]any {
return map[string]any{"type": "string", "description": desc}
}
return []provider.ToolSpec{
{
Name: "ask_user",
Description: "Ask the user a question when you genuinely need a decision to proceed. The task pauses until the user answers; do not call other tools after this.",
ParametersJSONSchema: map[string]any{
"type": "object",
"properties": map[string]any{
"question": strProp("the question to ask, phrased as a real question"),
"options": map[string]any{"type": "array", "items": map[string]any{"type": "string"}, "description": "optional suggested answer choices"},
},
"required": []string{"question"},
},
},
{
Name: "report_summary",
Description: "Record a concise 2-5 sentence summary of what you accomplished. Call this before finishing.",
ParametersJSONSchema: map[string]any{
"type": "object",
"properties": map[string]any{"summary": strProp("the summary text")},
"required": []string{"summary"},
},
},
{
Name: "spawn_subtask",
Description: "Create a child task to be executed separately. Use this to break large work into focused pieces.",
ParametersJSONSchema: map[string]any{
"type": "object",
"properties": map[string]any{
"name": strProp("short descriptive name for the subtask"),
"instructions": strProp("complete instructions for the subtask agent"),
"model": strProp("optional model override"),
"max_budget_usd": map[string]any{"type": "number", "description": "optional budget cap in USD"},
"role": strProp("optional role name to dispatch the subtask through instead of a fixed model (e.g. an evaluator role); when set, model is ignored and the role's escalation ladder picks the provider/model"),
},
"required": []string{"name", "instructions"},
},
},
{
Name: "record_progress",
Description: "Record a short progress note that appears in the task timeline.",
ParametersJSONSchema: map[string]any{
"type": "object",
"properties": map[string]any{"message": strProp("a short progress note")},
"required": []string{"message"},
},
},
{
Name: "read_file",
Description: "Read the contents of a file in the sandbox working directory.",
ParametersJSONSchema: map[string]any{
"type": "object",
"properties": map[string]any{"path": strProp("path to the file, relative or absolute")},
"required": []string{"path"},
},
},
{
Name: "write_file",
Description: "Write or overwrite a file in the sandbox working directory.",
ParametersJSONSchema: map[string]any{
"type": "object",
"properties": map[string]any{
"path": strProp("path to the file, relative or absolute"),
"content": strProp("content to write"),
},
"required": []string{"path", "content"},
},
},
{
Name: "run_bash",
Description: "Run a shell command in the sandbox working directory. Returns exit code, stdout, and stderr.",
ParametersJSONSchema: map[string]any{
"type": "object",
"properties": map[string]any{"command": strProp("shell command to execute")},
"required": []string{"command"},
},
},
{
Name: "glob",
Description: "List files matching a glob pattern relative to the sandbox working directory.",
ParametersJSONSchema: map[string]any{
"type": "object",
"properties": map[string]any{"pattern": strProp("glob pattern, e.g. **/*.go")},
"required": []string{"pattern"},
},
},
}
}
// dispatchTool invokes one model-requested tool. Back-channel tools
// (ask_user/report_summary/spawn_subtask/record_progress) go to l.Channel;
// sandbox tools (read_file/write_file/run_bash/glob) go to l.Sandbox. It
// returns the text to feed back to the model as the tool result, and a
// blocked flag set when ask_user could not be answered in-session (the run
// must stop and the task block). Ported from the former
// executor.dispatchAgentTool (internal/executor/localtools.go), preserving
// identical result-string formatting.
func (l *Loop) dispatchTool(ctx context.Context, name, argsJSON string) (result string, blocked bool, err error) {
switch name {
case "ask_user":
var a struct {
Question string `json:"question"`
Options []string `json:"options"`
}
_ = json.Unmarshal([]byte(argsJSON), &a)
q := map[string]any{"text": a.Question}
if len(a.Options) > 0 {
q["options"] = a.Options
}
payload, _ := json.Marshal(q)
ans, askErr := l.Channel.AskUser(ctx, string(payload))
if errors.Is(askErr, agentchannel.ErrAgentBlocked) {
return "", true, nil
}
if askErr != nil {
return "", false, askErr
}
return ans, false, nil
case "report_summary":
var a struct {
Summary string `json:"summary"`
}
_ = json.Unmarshal([]byte(argsJSON), &a)
if rsErr := l.Channel.ReportSummary(ctx, a.Summary); rsErr != nil {
return "", false, rsErr
}
return "Summary recorded.", false, nil
case "spawn_subtask":
var a struct {
Name string `json:"name"`
Instructions string `json:"instructions"`
Model string `json:"model"`
MaxBudgetUSD float64 `json:"max_budget_usd"`
Role string `json:"role"`
}
_ = json.Unmarshal([]byte(argsJSON), &a)
id, ssErr := l.Channel.SpawnSubtask(ctx, agentchannel.SubtaskSpec{
Name: a.Name,
Instructions: a.Instructions,
Model: a.Model,
MaxBudgetUSD: a.MaxBudgetUSD,
Role: a.Role,
})
if ssErr != nil {
return "", false, ssErr
}
return "Created subtask " + id, false, nil
case "record_progress":
var a struct {
Message string `json:"message"`
}
_ = json.Unmarshal([]byte(argsJSON), &a)
if rpErr := l.Channel.RecordProgress(ctx, a.Message); rpErr != nil {
return "", false, rpErr
}
return "Noted.", false, nil
case "read_file":
var a struct {
Path string `json:"path"`
}
_ = json.Unmarshal([]byte(argsJSON), &a)
content, readErr := l.Sandbox.ReadFile(ctx, a.Path)
if readErr != nil {
return "", false, readErr
}
return content, false, nil
case "write_file":
var a struct {
Path string `json:"path"`
Content string `json:"content"`
}
_ = json.Unmarshal([]byte(argsJSON), &a)
if writeErr := l.Sandbox.WriteFile(ctx, a.Path, a.Content); writeErr != nil {
// A guardrail rejection (sandbox.Guarded wrapping the real
// Sandbox) is not a fatal execution error: feed the reason back
// to the model as ordinary tool content so it can self-correct,
// instead of aborting the whole run the way a genuine sandbox
// failure (e.g. no working directory) does.
var rej *sandbox.RejectionError
if errors.As(writeErr, &rej) {
return rej.Error(), false, nil
}
return "", false, writeErr
}
return "Written.", false, nil
case "run_bash":
var a struct {
Command string `json:"command"`
}
_ = json.Unmarshal([]byte(argsJSON), &a)
out, errOut, exitCode, runErr := l.Sandbox.RunBash(ctx, a.Command)
if runErr != nil {
var rej *sandbox.RejectionError
if errors.As(runErr, &rej) {
return rej.Error(), false, nil
}
return "", false, runErr
}
return fmt.Sprintf("exit_code: %d\nstdout:\n%s\nstderr:\n%s", exitCode, out, errOut), false, nil
case "glob":
var a struct {
Pattern string `json:"pattern"`
}
_ = json.Unmarshal([]byte(argsJSON), &a)
matches, globErr := l.Sandbox.Glob(ctx, a.Pattern)
if globErr != nil {
return "", false, globErr
}
out, _ := json.Marshal(matches)
return string(out), false, nil
default:
return "", false, fmt.Errorf("unknown tool %q", name)
}
}
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