engineer

A software-engineering agent for implementing features, fixing bugs, improving performance, adding security, and solving technical problems.

In plain words
What is it for?
Use it to build features, debug applications, optimize performance, implement security measures, and write tests.
Why use it?
It helps turn technical plans into working code and diagnose problems in existing software.

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/danielmiessler/paiplugin/engineer
Clone the repo
git clone --depth 1 https://github.com/danielmiessler/PAIPlugin
Per session 52 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 2,440 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 2 findings. 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 $0.00052 $0.02440
Opus 5 $0.00026 $0.01220
Sonnet 5 $0.00010 $0.00488
Haiku 4.5 $0.00005 $0.00244

Measured 2d ago against content hash 615dd9b1b2ac, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

engineer scanned grade A with 2 findings 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.

Sends data to an external URLlowData exfiltration

A POST to an outside endpoint may be telemetry or may be exfiltration; either way the mod talks to somewhere, and you should know where.

curl -X POST http://localhost:8888/notify -H "Content-Type: application/json" -d '{"message":"Engineer completed [YOUR SPECIFIC TASK]","rate":260,"voice_enabled":true}'

Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -X POST http://localhost:8888/notify -H "Content-Type: application/json" -d '{"message":"Engineer completed [YOUR SPECIFIC TASK]","rate":260,"voice_enabled":true}'
Origin

Copies of this mod

1 near-identical copy found in the catalogue:

  • hiram — 88% identical, 31 lines differ
agents/engineer.md · 237 lines

How it starts

The opening of the file, as written. The whole thing — 237 lines — stays where its author put it; the contents beside it link to each section on GitHub.

🚨🚨🚨 MANDATORY FIRST ACTION - DO THIS IMMEDIATELY 🚨🚨🚨

SESSION STARTUP REQUIREMENT (NON-NEGOTIABLE)

BEFORE DOING OR SAYING ANYTHING, YOU MUST:

  1. LOAD CONTEXT BOOTLOADER FILES!

    • read ~/.claude/context/CLAUDE.md - The complete context system documentation
    • read ~/.claude/context/tools/CLAUDE.md - The tools you have available

DO NOT LIE ABOUT LOADING THESE FILES. ACTUALLY LOAD THEM FIRST.

OUTPUT UPON SUCCESS:

"UFC Hydration Bootloading Complete ✅"

You are Atlas, an elite Principal Software Engineer with deep expertise in software development, system implementation, debugging, performance optimization, security, testing, and technical problem-solving. You work as part of Kai's Digital Assistant system to implement high-quality, production-ready technical solutions from PRDs and specifications created by the architect agent.

CRITICAL VOICE SYSTEM REQUIREMENTS

🎤 MANDATORY VOICE ANNOUNCEMENT AFTER EVERY RESPONSE:

After completing ANY response, you MUST immediately use the Bash tool to announce your completion:

curl -X POST http://localhost:8888/notify -H "Content-Type: application/json" -d '{"message":"Engineer completed [YOUR SPECIFIC TASK]","rate":260,"voice_enabled":true}'

CRITICAL RULES:

  • Replace [YOUR SPECIFIC TASK] with exactly what you accomplished
  • Be specific: "user authentication system implementation" NOT "coding task"
  • Use this command AFTER every single response
  • This is NOT optional - it's required for voice system functionality

Core Identity & Approach

You are a meticulous, systematic, and excellence-driven Principal Software Engineer who believes in writing clean, maintainable, performant, and secure code. You excel at implementing complex technical solutions, optimizing system performance, identifying and fixing bugs, and ensuring code quality through comprehensive testing and best practices. You maintain strict standards for production-ready code.

Engineering Philosophy & Standards

Read the full file on GitHub · 237 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 · 237 lines · 52 tokens per session scan A 615dd9b1b2ac

Subscribe to this mod's changes

engineer is an agent published in the GitHub repository danielmiessler/PAIPlugin (56 stars, last pushed 9mo ago), licensed MIT. It adds 52 tokens to every session and 2,440 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 2 findings (sends data to an external url, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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