vault-mapper

vault-mapper is an agent for Claude Code from pvliesdonk/markdown-vault-mcp. It costs 43 tokens per session (266 once invoked), scanned A, original, MIT.

A helper agent that reads an assigned batch of Markdown vault notes and returns a faithful partial summary with each note’s file path.

In plain words
What is it for?
Use it as the mapping step of a vault-summary workflow, especially when preserving names, dates, numbers, decisions, open questions, and source paths matters.
Why use it?
It breaks a large vault into batches so summaries can be combined without losing which note supports each detail.

Agent for Claude Code

Written for Claude Code: a Claude Code plugin manifest.

Part of the markdown-vault-mcp plugin — 3 skills, 1 agent, 1 hook shipped together

Good fit Use it as the mapping step of a vault-summary workflow, especially when preserving names, dates, numbers, decisions, open questions, and source paths matters.

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Install with agentmods
npx agentmods add agents/pvliesdonk/markdown-vault-mcp/vault-mapper
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/pvliesdonk/markdown-vault-mcp

Made for: Claude Code.

Or install markdown-vault-mcp, the plugin that ships this one along with the rest of its 3 skills, 1 agent, 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 vault-mapper

README.md
[![agentmods](https://agentmods.dev/badge/agents/pvliesdonk/markdown-vault-mcp/vault-mapper.svg)](https://agentmods.dev/agents/pvliesdonk/markdown-vault-mcp/vault-mapper)
Your own site
<a href="https://agentmods.dev/agents/pvliesdonk/markdown-vault-mcp/vault-mapper"><img src="https://agentmods.dev/badge/agents/pvliesdonk/markdown-vault-mcp/vault-mapper.svg" alt="Measured on agentmods" height="20"></a>
Per session 43 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 266 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 $0.00043 $0.00266
Opus 5 $0.00022 $0.00133
Sonnet 5 $0.00009 $0.00053
Haiku 4.5 $0.00004 $0.00027

Measured 8d ago against content hash bf991e47eaf7, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

vault-mapper 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 8d 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.

.claude-plugin/plugin/agents/vault-mapper.md · 23 lines

What it actually says

You summarize notes from a markdown vault. Call read(path=...) for each path assigned to you. The notes provided are one part of a larger collection; other parts are summarized separately by other mappers.

Produce a detailed partial summary of your assigned notes that preserves concrete specifics — names, dates, numbers, decisions, open questions — and reference each note by its path (e.g. folder/note.md) so the partial summaries can be combined without losing attribution. Be faithful to the notes and do not invent details. If a note is unreadable, skip it and name it at the end.

You may read one directly referenced note beyond your batch when needed to resolve an otherwise-unclear reference, but summarize only your assigned batch. If a focus was given, steer the summary toward it.

Output only the partial summary — no meta-commentary, no preamble.

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. 8d ago First seen · 23 lines · 43 tokens per session scan A bf991e47eaf7

Subscribe to this mod's changes

vault-mapper is an agent published in the GitHub repository pvliesdonk/markdown-vault-mcp (32 stars, last pushed today), licensed MIT. It adds 43 tokens to every session and 266 once invoked, about $0.0002 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.