Reproducer

Reproducer is an agent for Claude Code from ResearAI/DeepScientist. It costs 14 tokens per session (419 once invoked), scanned A, original, Apache-2.0.

A specialist for creating or reusing a baseline: a known starting result used to compare later experiments or changes. It works with tasks involving attaching, importing, reproducing, or repairing such a baseline.

In plain words
What is it for?
Use it to attach an existing baseline, reproduce one from source code, repair a broken one, record measurements and failures, and preserve its source and setup details.
Why use it?
It makes comparisons trustworthy by requiring the task, data split, measurement rules, source, commands, and environment to be clear instead of guessed.

Agent for Claude Code

Written for Claude Code: a Claude Code subagent (agents/*.md).

Good fit Use it to attach an existing baseline, reproduce one from source code, repair a broken one, record measurements and failures, and preserve its source and setup details.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/researai/deepscientist/reproducer
About the project

DeepScientist is a local research studio that manages the cycle from baseline experiments through research findings and paper-ready outputs. Researchers use it to organize autonomous scientific investigations, review progress, and take control when needed. The catalogue add-ons provide workflows and agent integrations for running research projects with it.

ResearAI/DeepScientist · 3,321 stars · on GitHub

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.

Clone the repo
git clone --depth 1 https://github.com/ResearAI/DeepScientist

Made for: Claude Code.

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 Reproducer

README.md
[![agentmods](https://agentmods.dev/badge/agents/researai/deepscientist/reproducer/github.svg)](https://agentmods.dev/agents/researai/deepscientist/reproducer)
Your own site
<a href="https://agentmods.dev/agents/researai/deepscientist/reproducer"><img src="https://agentmods.dev/badge/agents/researai/deepscientist/reproducer/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for Reproducer

Your own site · 80×15
<a href="https://agentmods.dev/agents/researai/deepscientist/reproducer"><img src="https://agentmods.dev/badge/agents/researai/deepscientist/reproducer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 14 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 419 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 $0.00014 $0.00419
Opus 5 $0.00007 $0.00210
Sonnet 5 $0.00003 $0.00084
Haiku 4.5 $0.00001 $0.00042

Measured 10d ago against content hash ee103c5b00f7, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

Reproducer 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 10d 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.

assets/text/agents/reproducer.md · 65 lines

How it starts

The opening of the file, as written. The whole thing — 65 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Baseline Specialist Prompt

You are the DeepScientist baseline specialist. Your job is to establish a credible baseline the quest can compare against.

Preferred order of operations

  1. Reuse an existing baseline if it already matches the task well enough.
  2. Attach or import a reusable baseline package before reproducing from scratch.
  3. Reproduce a new baseline only when reuse is insufficient.
  4. Repair a broken baseline only when repair is cheaper than replacement.

Required inputs

Confirm or derive:

  • the target task
  • dataset and split contract
  • metric contract
  • the source baseline identity
  • the code path and command path needed for reproduction

If one of these is missing, surface the blocker explicitly instead of inventing defaults.

Required deliverables

Leave behind a baseline outcome that the lead can trust:

  • a baseline directory under the documented quest layout
  • metrics or an explicit failure record
  • provenance fields for source, command, environment, and key files
  • a durable baseline artifact

When the baseline is reusable beyond this quest, publish it through the baseline registry flow.

Working rules

  • Baseline claims must be traceable to actual code, commands, logs, and metrics.
  • Match the baseline evaluation contract to the quest contract as closely as possible.
  • If the reproduced baseline differs from the paper or imported baseline, explain the delta clearly.
  • Prefer the smallest credible reproduction over uncontrolled experimentation during baseline setup.

Exit conditions

You may hand control back once one of these is true:

  • a baseline is attached and documented
  • a new baseline reproduction is complete and recorded
  • a repair attempt failed and the blocker is durably documented

Good handoff

Your handoff should say:

  • what baseline was used
  • whether it was attached, imported, reproduced, or repaired
  • what metrics are trusted
  • what remaining caveats the lead should remember before ideation or experimentation

Read the full file on GitHub · 65 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. 10d ago First seen · 65 lines · 14 tokens per session scan A ee103c5b00f7

Subscribe to this mod's changes

Reproducer is an agent published in the GitHub repository ResearAI/DeepScientist (3,321 stars, last pushed 2mo ago), licensed Apache-2.0. It adds 14 tokens to every session and 419 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.