What is excel-mcp CLAUDE.md?

Project instructions for a Product Requirement Prompt framework. A PRP combines product requirements, relevant code information, and a runbook for an AI coding agent.

Use it when creating or running PRPs, onboarding, debugging, reviewing code, planning work, resolving Git conflicts, or using the framework’s development commands.

It describes the repository’s commands, templates, validation approach, and development workflows so an agent knows how project plans and code changes are organized.

How mort-lab/excel-mcp configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to mort-lab/excel-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/mort-lab/excel-mcp/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/mort-lab/excel-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/mort-lab/excel-mcp/claude-md/github.svg)](https://agentmods.dev/instructions/mort-lab/excel-mcp/claude-md)

Your own site

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

Per session 6,071 This file is loaded in full into every session.

When invoked 6,071 The same file — it is already loaded in full.

Security scan D 3 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	$0.06071	$0.06071
Opus 5.5	$0.02428	$0.02428
Sonnet 5.5	$0.01214	$0.01214
Haiku 4.5	$0.00607	$0.00607

Measured 2mo ago against content hash 58b946d6c1d2, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade D, and why

excel-mcp CLAUDE.md scanned grade D with 3 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 2mo 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.

Sends data to an external URLmediumData exfiltration

A POST to an outside endpoint may be telemetry or may be exfiltration; either way the mod talks to somewhere, and you should know where.

curl -X POST http://localhost:8000/endpoint -H "Content-Type: application/json" -d '{...}'

Downloads and executes remote codehighSupply chain

curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.

curl -LsSf https://astral.sh/uv/install.sh | sh

Makes network callslowCapability

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

curl -X POST http://localhost:8000/endpoint -H "Content-Type: application/json" -d '{...}'

CLAUDE.md · 920 lines

How it starts

The opening of the file, as written. The whole thing — 920 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE.md

This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.

Project Nature

This is a PRP (Product Requirement Prompt) Framework repository, not a traditional software project. The core concept: "PRP = PRD + curated codebase intelligence + agent/runbook" - designed to enable AI agents to ship production-ready code on the first pass.

Core Architecture

Command-Driven System

pre-configured Claude Code commands in .claude/commands/
Commands organized by function:
- prp-core/ - Core PRP workflow (creation and execution)
- prp-commands/ - Legacy PRP workflows (story, base, planning variants)
- development/ - Core development utilities (prime-core, onboarding, debug)
- code-quality/ - Review and refactoring commands
- rapid-development/experimental/ - Parallel PRP creation and hackathon tools
- git-operations/ - Conflict resolution and smart git operations

Template-Based Methodology

PRP Templates in PRPs/templates/ follow structured format with validation loops
Context-Rich Approach: Every PRP must include comprehensive documentation, examples, and gotchas
Validation-First Design: Each PRP contains executable validation gates (syntax, tests, integration)

AI Documentation Curation

PRPs/ai_docs/ contains curated Claude Code documentation for context injection
claude_md_files/ provides framework-specific CLAUDE.md examples

Development Commands

PRP Execution

# Interactive mode (recommended for development)
uv run PRPs/scripts/prp_runner.py --prp [prp-name] --interactive

# Headless mode (for CI/CD)
uv run PRPs/scripts/prp_runner.py --prp [prp-name] --output-format json

# Streaming JSON (for real-time monitoring)
uv run PRPs/scripts/prp_runner.py --prp [prp-name] --output-format stream-json

Key Claude Commands

Core PRP Workflow (Recommended):

/prp-core-run-all - Run complete PRP workflow from feature to PR (orchestrates all steps below)
/prp-core-new-branch - Create conventional git branch for feature
/prp-core-create - Create comprehensive feature PRP with deep codebase analysis
/prp-core-execute - Execute feature PRP with sequential validation
/prp-core-commit - Create atomic git commit with validation
/prp-core-pr - Push changes and create PR with comprehensive description

Read the full file on GitHub · 920 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.

2mo ago First seen · 920 lines · 6,071 tokens per session scan D 58b946d6c1d2

Subscribe to this mod's changes

excel-mcp CLAUDE.md is an instructions file published in the GitHub repository mort-lab/excel-mcp (5 stars, last pushed 2mo ago), licensed MIT. It adds 6,071 tokens to every session, about $0.0243 per session on Opus 5.5. A static security scan graded it D with 3 findings (sends data to an external url, downloads and executes remote code, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

mcp mcp-server

vscode buildNext.instructions.md

Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).

microsoft/vscode · 9,715 tokens

excel-mcp: Instructions file for Claude Code