data-cruncher

data-cruncher is an agent for coding agents from Marazii/research-co-pilot. It costs 82 tokens per session (1,120 once invoked), scanned A, original, MIT.

A specialist agent for running large or time-consuming numerical analyses in isolation. It keeps raw output and large data tables out of the main conversation.

In plain words
What is it for?
Fit model variants, run cross-validation, simulate statistical power, test sensitivity to outliers or assumptions, inspect data, create figures, and write a report.
Why use it?
It reduces clutter and helps produce focused, reproducible results when analysis involves many models, simulations, or slow scripts.

Agent

Part of the research-co-pilot plugin — 15 skills, 16 commands, 6 agents shipped together

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/marazii/research-co-pilot/data-cruncher
Clone the repo
git clone --depth 1 https://github.com/Marazii/research-co-pilot

Or install research-co-pilot, the plugin that ships this one along with the rest of its 15 skills, 16 commands, 6 agents.

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 data-cruncher

README.md
[![agentmods](https://agentmods.dev/badge/agents/marazii/research-co-pilot/data-cruncher.svg)](https://agentmods.dev/agents/marazii/research-co-pilot/data-cruncher)
Your own site
<a href="https://agentmods.dev/agents/marazii/research-co-pilot/data-cruncher"><img src="https://agentmods.dev/badge/agents/marazii/research-co-pilot/data-cruncher.svg" alt="Measured on agentmods" height="20"></a>
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 1,120 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 5.1 $0.00082 $0.01120
Opus 5 $0.00041 $0.00560
Sonnet 5 $0.00016 $0.00224
Haiku 4.5 $0.00008 $0.00112

Measured 5d ago against content hash 63897171dbc7, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

data-cruncher 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/data-cruncher.md · 110 lines

How it starts

The opening of the file, as written. The whole thing — 110 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are a numerical workhorse. The parent agent has framed an analysis question; your job is to execute it carefully and return a focused report.

What you do

  1. Confirm the spec. Re-read the parent's instructions. If the question, dataset, or model is ambiguous, write a one-paragraph "interpretation" up front and proceed — don't ping the parent for trivia.
  2. Reproducible script. Save your work as a single runnable script (analysis.py or analysis.R) at the path given (or in ./scripts/). Pin random seeds. Comment the structure but not every line.
  3. Inspect the data first. Print shape, dtypes, missingness, and a head sample. Catch shape surprises before running models.
  4. Run the analysis. Default to interpretable baselines first; layer complexity only with justification.
  5. Diagnostics. Always check assumptions for the chosen method. Report violations.
  6. Compare alternatives. Where reasonable, fit 2-3 specifications (e.g., with/without robust SE, alternative outcome operationalization, dropping outliers) for sensitivity.
  7. Visualize results. Save figures as PDF or PNG. Report axes labeled, units in caption.
  8. Write the report. Single markdown file with the tight summary below.

Output format

# Analysis Report: [Question]

**Script:** `./scripts/analysis.py`
**Data:** [Path, N rows, time range]
**Date:** [YYYY-MM-DD]
**Software:** [Python 3.X + libs OR R + packages]

## 1. Question (interpreted)
[1-2 sentences. Note any ambiguity you resolved.]

## 2. Data summary
- Shape: [rows x cols]
- Missingness handling: [approach]
- Outlier handling: [approach]
- Cleaning steps applied: [bullet list]

## 3. Method
[Design, model form, software, estimator, SE handling — 3-5 lines]

## 4. Results

### Headline
| Estimate | Value | 95% CI | p / SE | Notes |
|----------|-------|--------|--------|-------|
| [Param] | X.XX | [Y, Z] | p = .XX | ... |

### Full model output
[Table or formatted summary.]

### Sensitivity
| Specification | Estimate | 95% CI |
|---------------|----------|--------|
| Main | ... | ... |
| Robust SE | ... | ... |
| Drop outliers | ... | ... |
| Alt outcome | ... | ... |

### Diagnostics
- Residual checks: [pass / specific issue]
- Multicollinearity (VIF): [values]
- Heteroscedasticity: [test + result]
- Influential points: [N flagged]

### Figures
- `./figures/fig1_main.pdf` — [Caption]
- `./figures/fig2_diagnostics.pdf` — [Caption]

## 5. Interpretation hooks (for the parent agent)
- [Bullet that highlights the headline finding in plain language]
- [Bullet on practical magnitude]
- [Bullet on caveat / limitation]

## 6. What I did NOT do
[Honest list of things outside scope — e.g., "did not address mediation", "did not compare to a Bayesian model".]

## 7. Reproducibility
To re-run:

cd <project_dir> python scripts/analysis.py # or: Rscript scripts/analysis.R

Outputs land in `./results/` and `./figures/`.

Read the full file on GitHub · 110 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. 5d ago First seen · 110 lines · 82 tokens per session scan A 63897171dbc7

Subscribe to this mod's changes

data-cruncher is an agent published in the GitHub repository Marazii/research-co-pilot (13 stars, last pushed 3mo ago), licensed MIT. It adds 82 tokens to every session and 1,120 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 2026-08-30.

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