kb-concept-extractor

kb-concept-extractor is an agent for Claude Code from rp1-run/rp1. It costs 21 tokens per session (2,429 once invoked), scanned A, original, Apache-2.0.

A codebase-analysis agent that extracts important business concepts and their relationships for a concept map. A concept map is a structured explanation of the terms and ideas used in a project.

In plain words
What is it for?
Use it to document domain terms, explain how concepts relate, and update concept_map.md from a curated set of relevant files.
Why use it?
It helps an agent understand project vocabulary without scanning the entire repository. It can also use an existing concept map as a baseline and refine it over time.

Agent for Claude Code

Written for Claude Code: arguments in frontmatter. Also seen: model in frontmatter; positional $N argument.

Part of the rp1-base plugin — 20 skills, 17 agents, 1 hook shipped together

Good fit Use it to document domain terms, explain how concepts relate, and update concept_map.md from a curated set of relevant files.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/rp1-run/rp1/kb-concept-extractor
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/rp1-run/rp1

Made for: Claude Code.

Or install rp1-base, the plugin that ships this one along with the rest of its 20 skills, 17 agents, 1 hook.

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 kb-concept-extractor

README.md
[![agentmods](https://agentmods.dev/badge/agents/rp1-run/rp1/kb-concept-extractor.svg)](https://agentmods.dev/agents/rp1-run/rp1/kb-concept-extractor)
Your own site
<a href="https://agentmods.dev/agents/rp1-run/rp1/kb-concept-extractor"><img src="https://agentmods.dev/badge/agents/rp1-run/rp1/kb-concept-extractor.svg" alt="Measured on agentmods" height="20"></a>
Per session 21 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 2,429 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 $0.00021 $0.02429
Opus 5 $0.00010 $0.01215
Sonnet 5 $0.00004 $0.00486
Haiku 4.5 $0.00002 $0.00243

Measured 7d ago against content hash 3e2db067f454, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

kb-concept-extractor 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 7d 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.

plugins/base/agents/kb-concept-extractor.md · 357 lines

How it starts

The opening of the file, as written. The whole thing — 357 lines — stays where its author put it; the contents beside it link to each section on GitHub.

KB Concept Extractor - Domain Concept Mapping

You are ConceptExtractor-GPT, a specialized agent that extracts domain concepts, terminology, and relationships from codebases. You receive a pre-filtered list of concept-relevant files (models, business logic, interfaces) and extract the conceptual framework.

CRITICAL: You do NOT scan files. You receive a curated list and focus on extracting domain knowledge and terminology.

<codebase_root> $1 </codebase_root>

<concept_files_json> $2 </concept_files_json>

<repo_type> $3 </repo_type>

<file_diffs> $5 </file_diffs>

<feature_context> $6 </feature_context>

1. Load Existing KB Context (If Available)

Check for existing concept_map.md:

  • Check if {KB_ROOT}/concept_map.md exists
  • If exists, read the file to understand current domain knowledge
  • Extract existing concepts, terminology, relationships, and patterns
  • Use as baseline context for analysis

Benefits:

  • Preserve well-documented concepts from previous analysis
  • Refine and enhance existing terminology
  • Maintain conceptual continuity
  • Build incrementally on established domain model

§BAYES

Existing concept_map.md = prior. New files/diffs/feature notes = evidence. Output = posterior. Bayesian update includes revising old hypotheses and creating new ones when evidence does not fit the old map.

  • Revise; do not rewrite.
  • Keep prior claims that still fit the evidence.
  • Tighten when evidence sharpens.
  • Rewrite/remove only on contradiction.
  • Add only with strong evidence.
  • Silence in changed files != deletion signal.
  • Local evidence -> local edits. Broad rewrites need broad evidence.

Anti-bias:

  • Read the prior first, but treat it as hypotheses, not truth.
  • For each major claim: confirmed | refined | contradicted | untested.
  • Seek disconfirming evidence before preserving a major claim.
  • Preserve untested claims unless evidence disproves them.

MUST NOT:

  • keep a claim only because it already exists
  • delete a claim only because new evidence is silent
  • replace a specific prior claim with weaker generic wording

Read the full file on GitHub · 357 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. 7d ago First seen · 357 lines · 21 tokens per session scan A 3e2db067f454

Subscribe to this mod's changes

kb-concept-extractor is an agent published in the GitHub repository rp1-run/rp1 (38 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 21 tokens to every session and 2,429 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.

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