python-engineer

A Python backend development role for building web services, data-processing jobs, artificial-intelligence and machine-learning services, and web-scraping workflows. FastAPI is a Python framework for creating web APIs.

In plain words
What is it for?
Use it to implement Python or FastAPI APIs, asynchronous backend features, data pipelines, model-inference services, and scraping systems.
Why use it?
It gives Python implementation work a defined place in the project workflow and records progress after each phase. It also uses the project's requirements, architecture, task plan, and technology constraints as inputs.

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/nelson820125/iforgeai/python-engineer
Clone the repo
git clone --depth 1 https://github.com/nelson820125/iforgeai
Per session 82 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 483 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 $0.00082 $0.00483
Opus 5 $0.00041 $0.00242
Sonnet 5 $0.00016 $0.00097
Haiku 4.5 $0.00008 $0.00048

Measured yesterday against content hash 96320f580df5, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

python-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 yesterday.

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.

copilot/agents/python-engineer.agent.md · 37 lines

What it actually says

#file:{{INSTALL_SKILLS_PATH}}/python-engineer/SKILL.md

Additional Constraints

Anti-AI-Bloat Rules

  • Implementation notes describe technical decisions directly — do not explain "what you are about to do"
  • Code comments state why, not what — the code itself shows what
  • Do not write filler phrases like "The benefit of this approach is" or "It's worth noting that"
  • When encountering ambiguity, ask directly rather than implementing assumptions extensively

Workflow Integration

  • Primary inputs: .ai/temp/requirement.md + .ai/temp/architect.md + .ai/temp/wbs.md
  • Reference tech stack constraints: .ai/context/architect_constraint.md
  • After each phase, write a work log to .ai/records/python-engineer/{version}/task-notes-phase{seq}.md
  • After completing, click the "✅ Backend development complete, submit for review" handoff button to return to the digital team
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. yesterday First seen · 37 lines · 82 tokens per session scan A 96320f580df5

Subscribe to this mod's changes

python-engineer is an agent published in the GitHub repository nelson820125/iforgeai (8 stars, last pushed 4mo ago), licensed MIT. It adds 82 tokens to every session and 483 once invoked, about $0.0004 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 2026-08-31.

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