prompt_engineer

prompt_engineer is an agent for coding agents from josstei/maestro-orchestrate. It costs 98 tokens per session (220 once invoked), scanned A, original, Apache-2.0.

A specialist for designing and reviewing prompts and evaluation setups for large language models, software that generates or analyzes text.

In plain words
What is it for?
Use it to write prompts, structure examples, build evaluation datasets, improve retrieval for retrieval-augmented generation systems, and investigate output changes.
Why use it?
It helps make model instructions clearer and helps identify regressions in generated results or search quality.

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/josstei/maestro-orchestrate/prompt_engineer
Clone the repo
git clone --depth 1 https://github.com/josstei/maestro-orchestrate

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for prompt_engineer

README.md
[![agentmods](https://agentmods.dev/badge/agents/josstei/maestro-orchestrate/prompt_engineer.svg)](https://agentmods.dev/agents/josstei/maestro-orchestrate/prompt_engineer)
Your own site
<a href="https://agentmods.dev/agents/josstei/maestro-orchestrate/prompt_engineer"><img src="https://agentmods.dev/badge/agents/josstei/maestro-orchestrate/prompt_engineer.svg" alt="Measured on agentmods" height="20"></a>
Per session 98 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 220 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 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 $0.00098 $0.00220
Opus 5 $0.00049 $0.00110
Sonnet 5 $0.00020 $0.00044
Haiku 4.5 $0.00010 $0.00022

Measured 5d ago against content hash 41937af899e3, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

prompt_engineer scanned grade A with 0 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 5d 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.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

agents/prompt_engineer.md · 23 lines

What it actually says

Agent methodology loaded via MCP tool get_agent. Call get_agent(agents: ["prompt-engineer"]) to read the full methodology at delegation time.

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. 5d ago First seen · 23 lines · 98 tokens per session scan A 41937af899e3

Subscribe to this mod's changes

prompt_engineer is an agent published in the GitHub repository josstei/maestro-orchestrate (461 stars, last pushed 29d ago), licensed Apache-2.0. It adds 98 tokens to every session and 220 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Related

Other agents, from other repositories

cortex

Designs and ships production AI features — LLM integration, prompt engineering, RAG pipelines, evals, and MLOps. Use when you need an AI architecture decision, a prompt-first vs RAG vs fine-tune call, or an eval harness for an existing feature. Trigger with "build this AI feature", "design the RAG pipeline".

jeremylongshore/tons-of-skills-marketplace · 75 tokens

token

Optimizes LLM context windows through token budgeting, chunking strategy, and truncation design. Use when you need to control token spend, design a chunking pipeline, or audit token usage in a production AI system. Trigger with "design my token budget", "fix my context overflow".

jeremylongshore/tons-of-skills-marketplace · 60 tokens

ai-engineer

AI/ML Engineer (Reza Tehrani) - LLM seçimi, prompt engineering, RAG, AI agent mimarisi, fine-tuning.

vibeeval/vibecosystem · 36 tokens

ai-engineer

Build LLM applications, RAG systems, and prompt pipelines. Implements vector search, agent orchestration, and AI API integrations. Use PROACTIVELY for LLM features, chatbots, or AI-powered applications.

echoVic/blade-code · 48 tokens

enhanceprompt

Agent "enhanceprompt" from nodetool-ai/nodetool, covering description, properties, outputs and related nodes.

nodetool-ai/nodetool · 0 tokens

agent-developer

Expert in agent architecture, persona design, and multi-agent systems. Designs agents using ReAct/Plan-Execute/Reflection patterns, implements RAG and tool integration, creates evaluation frameworks. Use for agent design decisions, system architec...

SteveGJones/ai-first-sdlc-practices · 52 tokens