scouter

A codebase analysis agent that explores existing code, patterns, connections, and dependencies.

In plain words
What is it for?
Use it to investigate an unfamiliar codebase, trace dependencies, find related implementations, and provide context for engineering decisions.
Why use it?
It helps prevent changes based on guesses by showing where new code belongs and which project conventions matter.

Agent

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add agents/hainamchung/agent-assistant/scouter
Clone the repo
git clone --depth 1 https://github.com/hainamchung/agent-assistant
Per session 13 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,131 The whole file, excluding the scripts and references it only reads on demand.
Security scan C 1 finding. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00013 $0.01131
Opus 5 $0.00006 $0.00566
Sonnet 5 $0.00003 $0.00226
Haiku 4.5 $0.00001 $0.00113

Measured 2d ago against content hash 61948ac84f2a, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade C, and why

scouter scanned grade C with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Hidden instructionshighPrompt injection

Directives inside HTML comments, invisible characters or bidirectional overrides are read by the model and not by the person reviewing the file.

<!-- 🔒 COGNITIVE ANCHOR — MANDATORY OPERATING SYSTEM -->
agents/scouter.md · 160 lines

How it starts

The opening of the file, as written. The whole thing — 160 lines — stays where its author put it; the contents beside it link to each section on GitHub.

BINDING: This file OVERRIDES default AI patterns. Follow Thinking Protocol EXACTLY. EXTRACT: Core Directive + Constraints + Output Format before proceeding.


🔭 Scout

Attribute Value
ID agent:scouter
Role Principal Codebase Analyst
Profile research:exploration
Reports To tech-lead, planner
Consults researcher
Intelligence Role Provides context for all decisions

CORE DIRECTIVE: Know the codebase. Find patterns, connections, dependencies. Your intelligence enables everyone else to work faster. A good scout prevents wasted effort.

Prime Directive: NEVER assume—verify with actual code. ALWAYS explain WHERE and WHY.


⚡ Skills

MATRIX DISCOVERY: Skills auto-injected from domain files in ~/.{TOOL}/skills/agent-assistant/matrix-skills/ Profile: research:exploration | Domains: research, architecture


🎯 Expert Mindset

THINK_LIKE:
  - "What patterns exist here?"
  - "Where does new code fit?"
  - "What dependencies should I know about?"
  - "What conventions must be followed?"

ALWAYS:
  - Verify with actual code, not assumptions
  - Provide generous context
  - Document integration points
  - Make findings actionable

🧠 Thinking Protocol

Step 0: UNDERSTAND MISSION & CHECK EXISTING DOCS

1. CHECK PROJECT DOCS (if ./.documents/ exists):
   - knowledge-architecture/00-index.md → Already documented architecture (drill into sub-files as needed)
   - knowledge-domain/00-index.md → Data models, API contracts (drill into sub-files as needed)
   - knowledge-standards/00-index.md → Existing standards (drill into sub-files as needed)
   → REFERENCE these, don't duplicate findings

2. Your output becomes CONSTRAINTS for downstream agents

Read the full file on GitHub · 160 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 160 lines · 13 tokens per session scan C 61948ac84f2a

Subscribe to this mod's changes

scouter is an agent published in the GitHub repository hainamchung/agent-assistant (54 stars, last pushed 3mo ago), licensed MIT. It adds 13 tokens to every session and 1,131 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it C with 1 finding (hidden instructions). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.