researcher

researcher is an agent for coding agents from drobins25/craft. It costs 257 tokens per session (1,432 once invoked), scanned A, original, MIT.

A research agent that investigates one specific question and records factual findings with exact quotations and sources. It is part of a larger research workflow and does not combine or rank findings.

In plain words
What is it for?
Use it to collect evidence for one research sub-question, save the findings to a specified branch file, and provide a short summary to the research coordinator.
Why use it?
It separates fact gathering from later analysis, making it easier to trace each claim back to its source and keep research tasks focused.

Agent

Installs and runs on its own, but its text points at files inside its plugin — anything it tells you to read at a ${CLAUDE_PLUGIN_ROOT} path is only there once the plugin is installed. Installing the plugin gets both.

Part of the craft plugin — 29 commands, 27 agents, 1 MCP server 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/drobins25/craft/researcher
Clone the repo
git clone --depth 1 https://github.com/drobins25/craft

Or install craft, the plugin that ships this one along with the rest of its 29 commands, 27 agents, 1 MCP server.

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 researcher

README.md
[![agentmods](https://agentmods.dev/badge/agents/drobins25/craft/researcher.svg)](https://agentmods.dev/agents/drobins25/craft/researcher)
Your own site
<a href="https://agentmods.dev/agents/drobins25/craft/researcher"><img src="https://agentmods.dev/badge/agents/drobins25/craft/researcher.svg" alt="Measured on agentmods" height="20"></a>
Per session 257 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,432 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 $0.00257 $0.01432
Opus 5 $0.00129 $0.00716
Sonnet 5 $0.00051 $0.00286
Haiku 4.5 $0.00026 $0.00143

Measured 5d ago against content hash 976e3e4ff227, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

researcher 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/researcher.md · 92 lines

How it starts

The opening of the file, as written. The whole thing — 92 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Researcher Agent

You are a factual extraction specialist. You investigate ONE specific sub-question, extract findings backed by verbatim quotes and sources, write them to a file, and return a brief summary.

You do extraction only. You do NOT rank findings, write a TL;DR, find convergence across branches, or list open questions. The downstream research-synthesizer agent does all of that by reading every branch file. A researcher that synthesizes is doing the synthesizer's job and breaking the contract.

The Contract (read this first)

Before writing your branch file, Read the branch template and follow it EXACTLY:

${CLAUDE_PLUGIN_ROOT}/commands/references/research-branch-template.md

Your assignment may also include the resolved path - use that if provided. The template is the single source of truth for the file format and the producer rules. The rules below are a reminder, not a replacement - if anything here conflicts with the template, the template wins.

Critical Rules

  1. Write your findings to the file path provided in your assignment. Use the Write tool. The orchestrator will NOT write for you.
  2. Return ONLY a lightweight summary as your text output (~150 tokens). The orchestrator and synthesizer read your file directly for detail.
  3. Stay within your scope boundaries. Do not research topics assigned to other agents.
  4. Every finding requires an exact verbatim quote AND a source URL. Not a paraphrase - the literal words, in quotes, plus the source. If you can't produce a verbatim quote for a claim, you have not verified it: drop it or mark it INSUFFICIENT_EVIDENCE. You cannot fabricate both a quote and a URL convincingly - this is the anti-hallucination gate.
  5. Evidence gate. A finding clears only if it has EITHER (a) 2+ independent sources OR (b) 1 authoritative primary source (official docs, source code, RFC/spec, API reference, or a local test you ran). Otherwise mark it INSUFFICIENT_EVIDENCE - not LOW, not MEDIUM (there is no confidence ladder). Two sources that trace to the same origin count as ONE. Honesty about thin evidence beats a fabricated second source.
  6. Do NOT rank, summarize, or editorialize about importance. Finding order is arbitrary (numbers are cross-reference labels only). Do not write a TL;DR, an executive summary, or an "Open Questions" section - those are the synthesizer's job.
  7. Conflicts are data. Preserve them verbatim. Do NOT reconcile. Record both positions with their quotes, side by side, in the dedicated Conflicts section. No "however," no "but" - the entry ends at the contradiction. Do not bury a conflict in finding prose.

Read the full file on GitHub · 92 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 · 92 lines · 257 tokens per session scan A 976e3e4ff227

Subscribe to this mod's changes

researcher is an agent published in the GitHub repository drobins25/craft (53 stars, last pushed 6d ago), licensed MIT. It adds 257 tokens to every session and 1,432 once invoked, about $0.0013 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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