monarch

monarch is a skill for Claude Code from rmarji/monarch-mcp-server. It costs 58 tokens per session (2,358 once invoked), scanned A, original, MIT.

A personal finance analysis skill that reads data from Monarch Money, a personal-finance app. It examines accounts, transactions, cash flow, and spending categories using budgeting and debt-repayment methods.

In plain words
What is it for?
Use it to review balances and net worth, find spending leaks, assess cash flow, and compare budgeting or debt-payment approaches.
Why use it?
It turns financial records into analysis and recommendations instead of leaving you to interpret raw account and transaction data.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: positional $N argument.

Good fit Use it to review balances and net worth, find spending leaks, assess cash flow, and compare budgeting or debt-payment approaches.

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Install with agentmods
npx agentmods add skills/rmarji/monarch-mcp-server/monarch
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.

Any agent
npx skills add rmarji/monarch-mcp-server --skill monarch
Clone the repo
git clone --depth 1 https://github.com/rmarji/monarch-mcp-server

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 monarch

README.md
[![agentmods](https://agentmods.dev/badge/skills/rmarji/monarch-mcp-server/monarch/github.svg)](https://agentmods.dev/skills/rmarji/monarch-mcp-server/monarch)
Your own site
<a href="https://agentmods.dev/skills/rmarji/monarch-mcp-server/monarch"><img src="https://agentmods.dev/badge/skills/rmarji/monarch-mcp-server/monarch/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 monarch

Your own site · 80×15
<a href="https://agentmods.dev/skills/rmarji/monarch-mcp-server/monarch"><img src="https://agentmods.dev/badge/skills/rmarji/monarch-mcp-server/monarch.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 58 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,358 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. 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 $0.00058 $0.02358
Opus 5 $0.00029 $0.01179
Sonnet 5 $0.00012 $0.00472
Haiku 4.5 $0.00006 $0.00236

Measured 8d ago against content hash 51dd6bae566d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

monarch scanned grade A with 1 finding 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

- **Health check:** `curl -sf http://localhost:8765/health`
skills/monarch/SKILL.md · 239 lines

How it starts

The opening of the file, as written. The whole thing — 239 lines — stays where its author put it; the contents beside it link to each section on GitHub.

monarch: Personal Financial Strategist

You are a personal financial strategist with access to real financial data from Monarch Money. Your job is to fetch data, analyze it using proven frameworks, and deliver actionable recommendations — not data dumps.

Proxy Connection

  • Base URL: http://localhost:8765
  • Health check: curl -sf http://localhost:8765/health

Startup Protocol

Before any data fetch, check if the proxy is running:

curl -sf http://localhost:8765/health || (cd "$(git rev-parse --show-toplevel)" && nohup uv run python monarch_http_proxy.py > /tmp/monarch-proxy.log 2>&1 & sleep 3 && curl -sf http://localhost:8765/health)

If the proxy still fails after starting (e.g., not running from the monarch-mcp-server repo), tell the user and stop — don't retry in a loop. The user may need to cd into the repo first or start the proxy manually.

Endpoints

Endpoint Method Params Use When
/health GET Check proxy status
/accounts GET Account balances, net worth, list of accounts
/accounts/{id} GET Single account detail, investment holdings
/transactions GET start_date, end_date (YYYY-MM-DD), account_id, limit (default 100, max 10000) Spending by date range, recent activity
/transactions/search GET q (required), start_date, end_date Find specific merchants or descriptions
/cashflow GET start_date, end_date (YYYY-MM-DD) Income vs expenses, savings rate
/categories GET Category breakdown

Fetching Data

Always use curl -sf (silent + fail on HTTP errors). Parse JSON with jq where useful, but prefer fetching into a variable and analyzing in-context.

# Examples
curl -sf http://localhost:8765/accounts
curl -sf "http://localhost:8765/transactions?start_date=2026-01-01&end_date=2026-01-31&limit=500"
curl -sf "http://localhost:8765/transactions/search?q=netflix"
curl -sf "http://localhost:8765/cashflow?start_date=2026-01-01&end_date=2026-03-31"
curl -sf http://localhost:8765/categories

Read the full file on GitHub · 239 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. 8d ago First seen · 239 lines · 58 tokens per session scan A 51dd6bae566d

Subscribe to this mod's changes

monarch is a skill published in the GitHub repository rmarji/monarch-mcp-server (0 stars, last pushed 3mo ago), licensed MIT. It adds 58 tokens to every session and 2,358 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Related

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