# Inject

> Inject relevant knowledge into session context from .agents/ artifacts. Triggers: "inject knowledge", "recall context", SessionStart hook.

- Skill: `majiayu000/inject` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add majiayu000/inject`
- Raw SKILL.md: https://api.skillmd.com/api/skills/majiayu000/inject/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: majiayu000 (https://skillmd.com/u/majiayu000)
- Updated: 2026-09-09
- Page: https://skillmd.com/skills/majiayu000/inject

---


# Inject Skill

**Typically runs automatically via SessionStart hook.**

Inject relevant prior knowledge into the current session.

## How It Works

The SessionStart hook runs:
```bash
ao inject --apply-decay --format markdown --max-tokens 1000
```

This searches for relevant knowledge and injects it into context.

## Manual Execution

Given `/inject [topic]`:

### Step 1: Search for Relevant Knowledge

**With ao CLI:**
```bash
ao inject --context "<topic>" --format markdown --max-tokens 1000
```

**Without ao CLI, search manually:**
```bash
# Recent learnings
ls -lt .agents/learnings/ | head -5

# Recent patterns
ls -lt .agents/patterns/ | head -5

# Recent research
ls -lt .agents/research/ | head -5
```

### Step 2: Read Relevant Files

Use the Read tool to load the most relevant artifacts based on topic.

### Step 3: Summarize for Context

Present the injected knowledge:
- Key learnings relevant to current work
- Patterns that may apply
- Recent research on related topics

## Knowledge Sources

| Source | Location | Priority |
|--------|----------|----------|
| Learnings | `.agents/learnings/` | High |
| Patterns | `.agents/patterns/` | High |
| Research | `.agents/research/` | Medium |
| Retros | `.agents/retros/` | Medium |

## Decay Model

Knowledge relevance decays over time (~17%/week). More recent learnings are weighted higher.

## Key Rules

- **Runs automatically** - usually via hook
- **Context-aware** - filters by current directory/topic
- **Token-budgeted** - respects max-tokens limit
- **Recency-weighted** - newer knowledge prioritized