What is monica-mcp CLAUDE.md?

A set of project instructions for an MCP server that connects agents to Monica, a personal relationship management application. Its tools use actions such as listing, reading, creating, updating, and deleting records.

Use it when adding or updating contacts, recording activities and notes, managing tasks and reminders, or reading Monica's reference data.

It explains how the server's tools map to Monica's contacts, notes, tasks, reminders, relationships, and other data, so an agent can choose the right operation.

How philipp-mlr/monica-mcp configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to philipp-mlr/monica-mcp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/philipp-mlr/monica-mcp/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/philipp-mlr/monica-mcp

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.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/philipp-mlr/monica-mcp/claude-md/github.svg)](https://agentmods.dev/instructions/philipp-mlr/monica-mcp/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/philipp-mlr/monica-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/philipp-mlr/monica-mcp/claude-md/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.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/philipp-mlr/monica-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/philipp-mlr/monica-mcp/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 604 This file is loaded in full into every session.

When invoked 604 The same file — it is already loaded in full.

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.

Model	Per session	Once invoked
Fable 5.1	$0.00604	$0.00604
Opus 5	$0.00302	$0.00302
Sonnet 5	$0.00121	$0.00121
Haiku 4.5	$0.00060	$0.00060

Measured 9d ago against content hash a4c32a23da6d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

monica-mcp CLAUDE.md 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 9d 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.md · 58 lines

What it actually says

monica-mcp Agent Guide

Architecture

29 action-based tools — one per entity, takes action: "list"|"get"|"create"|"update"|"delete" parameter
Full coverage — all 30 Monica API endpoints
Design rationale — consolidated from 146 to 29 tools to save ~40K tokens of tool definitions
Tested against Monica v4.1.2

Tool Categories

Category	Tools	Description
Contact	`monica_contact`	CRUD + search + tags + career + 15 scoped queries
Communication	`monica_activity`, `monica_call`, `monica_conversation`	CRUD + message threading
Productivity	`monica_note`, `monica_task`, `monica_reminder`, `monica_tag`, `monica_journal_entry`	Full CRUD
Professional	`monica_relationship`, `monica_company`, `monica_occupation`	CRUD
Financial	`monica_gift`, `monica_debt`	CRUD + photo association
Reference	`monica_country`, `monica_currency`, `monica_gender`, `monica_user`	Read-only

Common Workflows

Add a contact + note + task:

monica_contact(action: "create", first_name: "John", ...)
  → get id
monica_note(action: "create", contact_id: ..., body: "...", is_favorited: 0)
monica_task(action: "create", contact_id: ..., title: "...", completed: 0)

Search for a contact:

monica_contact(action: "search", query: "John")

List what you know about a contact:

monica_contact(action: "list_notes", id: ...)
monica_contact(action: "list_activities", id: ...)
monica_contact(action: "list_relationships", id: ...)

Safety

All tools include the action parameter — the AI must explicitly choose delete
System env vars: MONICA_READ_ONLY=true blocks writes, MONICA_DISABLE_DELETE=true blocks deletes
Countries, currencies, genders are read-only (no create/update/delete)

Key Files

File	Purpose
`src/factory.ts`	Core factory — `makeEntityTool()` produces one action-based tool per entity
`src/tools/*.ts`	Entity tool definitions with zod schemas
`src/index.ts`	Server entry with security safeguard enforcement
`src/client.ts`	HTTP client wrapping Monica REST API
`.github/workflows/release.yml`	Tag-based npm publish + GitHub Release
`.github/workflows/version-watchdog.yml`	Daily check for new Monica releases

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.

9d ago First seen · 58 lines · 604 tokens per session scan A a4c32a23da6d

Subscribe to this mod's changes

monica-mcp CLAUDE.md is an instructions file published in the GitHub repository philipp-mlr/monica-mcp (1 stars, last pushed 2mo ago), licensed MIT. It adds 604 tokens to every session, about $0.0030 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 2026-08-31.

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monica-mcp: Instructions file for Claude Code