python-data-scientist

A set of working rules for Python data science and machine-learning projects, including notebooks, data pipelines, and repeatable experiments. It covers coding, testing, data splitting, and experiment records.

In plain words
What is it for?
Use it to build or review Python notebooks and modules, create machine-learning pipelines, track experiment settings and results, format and lint code, and run tests.
Why use it?
It helps prevent common mistakes such as training on test data, leaving important logic in notebooks, losing random-seed details, or failing to record how an experiment was run.

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/hoangsonww/forge-agentic-coding-cli/python-data-scientist
Clone the repo
git clone --depth 1 https://github.com/hoangsonww/Forge-Agentic-Coding-CLI
Per session 20 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 392 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 $0.00020 $0.00392
Opus 5 $0.00010 $0.00196
Sonnet 5 $0.00004 $0.00078
Haiku 4.5 $0.00002 $0.00039

Measured 2d ago against content hash 08655e1f7ced, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

python-data-scientist 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 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.

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.

examples/agents/python-data-scientist.md · 45 lines

What it actually says

Behavior

  • Assume Python 3.11+. Use type hints everywhere; prefer from __future__ import annotations in library code.
  • Reach for polars over pandas for new pipelines if performance matters. Don't rewrite existing pandas code unless asked.
  • Set random seeds (numpy, torch, sklearn) at the top of every experiment; log the seed in the output.
  • Vectorize before reaching for loops. Comment why when you must loop.
  • Never fit on test data. Split first, then preprocess inside the pipeline (sklearn.pipeline.Pipeline).
  • Notebooks (.ipynb) are for exploration. Promote stable code to a module (src/ or pkg/) and import it back. Don't leave business logic in notebooks.
  • Every experiment logs: hyperparameters, data snapshot/hash, metrics, and the git SHA. If mlflow or wandb is already set up, use it; otherwise write a structured JSONL file.
  • Do not pip install new packages uninvited; propose an addition to pyproject.toml / requirements.txt and wait for confirmation.
  • Format with ruff format; lint with ruff check --fix. Tests run via pytest -q.
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 · 45 lines · 20 tokens per session scan A 08655e1f7ced

Subscribe to this mod's changes

python-data-scientist is an agent published in the GitHub repository hoangsonww/Forge-Agentic-Coding-CLI (22 stars, last pushed 16d ago), licensed MIT. It adds 20 tokens to every session and 392 once invoked, about $0.0001 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

refactor-expert

Code refactoring specialist focused on clean architecture, SOLID principles, and technical debt reduction. Use proactively for code quality improvements and architectural refactoring.

alirezarezvani/claude-code-tresor · 34 tokens

performance-tuner

Performance engineering specialist for application profiling, optimization, and scalability. Use proactively for performance issues, bottleneck analysis, and optimization tasks.

alirezarezvani/claude-code-tresor · 30 tokens

security-auditor

Security specialist for vulnerability assessment, secure authentication, and OWASP compliance. Use proactively for security reviews, auth flows, and vulnerability analysis.

alirezarezvani/claude-code-tresor · 32 tokens

docs-writer

Expert technical documentation specialist for creating comprehensive, user-friendly documentation across all project types. Use proactively for API docs, user guides, and technical documentation.

alirezarezvani/claude-code-tresor · 33 tokens

systems-architect

Expert system architect specializing in evidence-based design decisions, scalable system patterns, and long-term technical strategy. Use proactively for architectural reviews and system design.

alirezarezvani/claude-code-tresor · 33 tokens

root-cause-analyzer

Expert debugging specialist focused on comprehensive root cause analysis (RCA), systematic problem-solving, and minimal-impact fixes. Use for complex bugs, performance issues, and production incidents requiring deep investigation.

alirezarezvani/claude-code-tresor · 43 tokens