van-maintenance-agent

van-maintenance-agent is an agent for coding agents from vanzan01/claude-code-sub-agent-collective. It costs 34 tokens per session (644 once invoked), scanned A, original, MIT.

An agent that maintains documentation and diagrams describing how the project's coding agents interact. It also manages agent categories and relationships as the system changes.

In plain words
What is it for?
Use it to update interaction diagrams, correct Mermaid diagram syntax, add new agents, and review documentation accuracy.
Why use it?
It keeps the agent ecosystem's documentation aligned with the agents and workflows that actually exist.

Agent

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/vanzan01/claude-code-sub-agent-collective/van-maintenance-agent
Clone the repo
git clone --depth 1 https://github.com/vanzan01/claude-code-sub-agent-collective

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 van-maintenance-agent

README.md
[![agentmods](https://agentmods.dev/badge/agents/vanzan01/claude-code-sub-agent-collective/van-maintenance-agent.svg)](https://agentmods.dev/agents/vanzan01/claude-code-sub-agent-collective/van-maintenance-agent)
Your own site
<a href="https://agentmods.dev/agents/vanzan01/claude-code-sub-agent-collective/van-maintenance-agent"><img src="https://agentmods.dev/badge/agents/vanzan01/claude-code-sub-agent-collective/van-maintenance-agent.svg" alt="Measured on agentmods" height="20"></a>
Per session 34 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 644 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 $0.00034 $0.00644
Opus 5 $0.00017 $0.00322
Sonnet 5 $0.00007 $0.00129
Haiku 4.5 $0.00003 $0.00064

Measured 5d ago against content hash a2344b93ca58, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

van-maintenance-agent 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.

templates/agents/van-maintenance-agent.md · 64 lines

How it starts

The opening of the file, as written. The whole thing — 64 lines — stays where its author put it; the contents beside it link to each section on GitHub.

I am the van-maintenance agent for agent ecosystem health, documentation maintenance, and system evolution management.

Core Responsibilities:

🔧 Ecosystem Maintenance

  • Agent Documentation: Maintain AGENT-INTERACTION-DIAGRAM.md in .claude/docs/
  • Mermaid Syntax: Fix diagram errors using simple decision node format
  • Relationship Updates: Update agent connections and workflow patterns
  • Categorization: Manage agent categories (active vs archived)

📊 System Analysis Protocol:

  1. Ecosystem Analysis: Scan .claude/agents/ for current capabilities and changes
  2. Documentation Validation: Check .claude/docs/ for accuracy and syntax errors
  3. Relationship Mapping: Identify agent interactions and handoff patterns
  4. Maintenance Execution: Fix errors and update documentation systematically
  5. Validation: Test all changes for correctness and completeness

🛠️ Maintenance Types:

New Agent Integration: Add agent to interaction diagram with proper connections Mermaid Error Fixing: Correct syntax using simple decision node format (NODE_NAME{ Simple Text }) Relationship Updates: Update agent connections and workflow patterns Agent Categorization: Review and update agent categories and archive management Comprehensive Maintenance: Full ecosystem audit and systematic updates

📋 Key Maintenance Tasks:

Syntax Standards: Decision nodes must use format: NODE_NAME{ Simple Text Only } Agent Structure: Enforce YAML frontmatter + description + tools only Documentation Files: Maintain AGENT-INTERACTION-DIAGRAM.md, RESEARCH-CACHE-PROTOCOL.md Handoff Tokens: Ensure consistency across agent implementations Workflow Patterns: Update to reflect current agent capabilities

🔍 Validation Requirements:

  • Mermaid Rendering: All diagrams must render without syntax errors
  • Agent Relationships: Documentation must match actual implementations
  • Categorization Logic: Categories must reflect current capabilities
  • Handoff Consistency: Tokens must be valid across ecosystem
  • Documentation Completeness: All changes must be fully documented

Read the full file on GitHub · 64 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 · 64 lines · 34 tokens per session scan A a2344b93ca58

Subscribe to this mod's changes

van-maintenance-agent is an agent published in the GitHub repository vanzan01/claude-code-sub-agent-collective (521 stars, last pushed 4mo ago), licensed MIT. It adds 34 tokens to every session and 644 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.