graph-query v1.0.0B

Immutable. This exact content never changes and is served at /api/v1/blob/cd6e0186487b9f34.

---
name: graph-query
description: Query the code graph for callers, dependencies and the blast radius of a change. Use before changing the signature or behaviour of a function, class or module that other code uses, when the user asks "find callers", "what uses this" or "check dependencies", and when exploring an unfamiliar codebase.
allowed-tools: Bash
compatibility: Requires AI Maestro (aimaestro.dev) with Bash shell access
metadata:
  author: 23blocks
  version: 1.0.0
---

# AI Maestro Code Graph Query

## CRITICAL: AUTOMATIC BEHAVIOR - READ THIS FIRST

**THIS IS NOT OPTIONAL. THIS IS YOUR DEFAULT BEHAVIOR.**

Every time you use the `Read` tool on a code file, you MUST IMMEDIATELY query the graph to understand:
- What is this component/function?
- What depends on it? (callers, serializers, child classes)
- What does it depend on? (callees, parent classes, associations)

**DO NOT:**
- Wait for the user to ask you to query the graph
- Skip the graph query because "it seems simple"
- Assume you understand the impact without checking
- Make changes before understanding dependencies

**ALWAYS:**
- Query the graph IMMEDIATELY after reading any code file
- Query BEFORE making any modifications
- Query when you find files via search (grep/glob)
- Include graph findings in your analysis to the user

### The Rule: Read File → Query Graph → Then Proceed

```
1. You read a file with Read tool
2. IMMEDIATELY run graph queries (describe, find-callers, find-serializers, etc.)
3. NOW you understand the full context
4. NOW you can analyze, modify, or discuss the code
```

**Example - Reading a Model:**
```bash
# After reading app/models/user.rb, IMMEDIATELY run:
graph-describe.sh User
graph-find-serializers.sh User
graph-find-associations.sh User
```

**Example - Reading a Function:**
```bash
# After reading a file with process_payment function, IMMEDIATELY run:
graph-find-callers.sh process_payment
graph-find-callees.sh process_payment
```

---

## Available Commands

All commands auto-detect your agent ID from the tmux session. Just run them:

### Query Commands
| Command | Description |
|---------|-------------|
| `graph-describe.sh <name>` | Describe a component or function |
| `graph-find-callers.sh <function>` | Find all functions that call this function |
| `graph-find-callees.sh <function>` | Find all functions called by this function |
| `graph-find-related.sh <component>` | Find related components (extends, includes, etc.) |
| `graph-find-by-type.sh <type>` | Find all components of a type (model, controller, etc.) |
| `graph-find-serializers.sh <model>` | Find serializers for a model |
| `graph-find-associations.sh <model>` | Find model associations (belongs_to, has_many) |
| `graph-find-path.sh <from> <to>` | Find call path between two functions |

### Indexing Commands
| Command | Description |
|---------|-------------|
| `graph-index-delta.sh [project-path]` | **Delta index** - only re-index changed files |

## Delta Indexing (New)

When files change in your codebase, use delta indexing to quickly update the graph:

```bash
# Delta index - only process changed files
graph-index-delta.sh

# Delta index a specific project
graph-index-delta.sh /path/to/project
```

**First Run Behavior:**
- First time: Does a full index + initializes file tracking metadata
- Subsequent runs: Only indexes new/modified/deleted files

> **Note:** There is no separate `graph-index.sh` script. `graph-index-delta.sh` handles both full indexing (on first run) and incremental updates (on subsequent runs).

**Output shows:**
- New files added
- Modified files re-indexed
- Deleted files removed
- Unchanged files skipped

**Performance:**
- Full index: 30-120 seconds (1000+ files)
- Delta index: 1-5 seconds (5-10 changed files)

## What to Query Based on What You Read

| File Type | IMMEDIATELY Query |
|-----------|-------------------|
| Model | `graph-describe.sh`, `graph-find-serializers.sh`, `graph-find-associations.sh` |
| Controller | `graph-describe.sh`, `graph-find-callees.sh` |
| Service | `graph-describe.sh`, `graph-find-callers.sh` |
| Function | `graph-find-callers.sh`, `graph-find-callees.sh` |
| Serializer | `graph-describe.sh` |
| Any class | `graph-find-related.sh` |

## Why This Matters

Without querying the graph, you will:
- Miss serializers that need updating when you change a model
- Break callers when you change a function signature
- Miss child classes that inherit your changes
- Overlook associations that depend on this model

**The graph query takes 1 second. A broken deployment takes hours to fix.**

## Component Types

Use with `graph-find-by-type.sh`:
- `model` - Database models
- `serializer` - JSON serializers
- `controller` - API controllers
- `service` - Service objects
- `job` - Background jobs
- `concern` - Shared modules
- `component` - React/Vue components
- `hook` - React hooks

## Helper Scripts

This skill relies on an internal helper script that provides shared utility functions:

- **`graph-helper.sh`** - Sourced by the `graph-*.sh` tool scripts. Provides graph-specific API functions (`graph_query`, `init_graph`) and initialization logic. Located alongside the tool scripts in `~/.local/bin/` (installed) or `plugin/src/scripts/` (source). If tool scripts fail with "common.sh not found", re-run `install-graph-tools.sh` from your AI Maestro checkout (the folder AI Maestro was installed from; `update-aimaestro.sh` also reinstalls it).

## Error Handling

**Script not found:**
- Check PATH: `which graph-describe.sh`
- Verify scripts installed: `ls -la ~/.local/bin/graph-*.sh`
- Scripts are installed to `~/.local/bin/` which should be in your PATH
- If not found, run `install-graph-tools.sh` from your AI Maestro checkout

**API connection fails:**
- Ensure AI Maestro is running: `curl http://127.0.0.1:23000/api/hosts/identity`
- Ensure your agent is registered (scripts auto-detect from tmux session)
- Check exact component names (case-sensitive)

**Graph is unavailable:**
- Inform the user: "Graph unavailable, proceeding with manual analysis - increased risk of missing dependencies."

## Installation

If commands are not found, run the installer from your AI Maestro checkout (the folder AI Maestro was installed from):
```bash
cd <your AI Maestro checkout> && ./install-graph-tools.sh
```

This installs scripts to `~/.local/bin/`.