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FCoP CLAUDE.md

FCoP CLAUDE.md is an instructions file for coding agents from joinwell52-AI/FCoP. It costs 55,112 tokens per session, scanned E, a copy of FCoP AGENTS.md, MIT.

Repository instructions for FCoP, a protocol for coordinating coding agents across different agent hosts and tools. A protocol is a shared set of rules for how systems communicate and organize work.

In plain words
What is it for?
Use it when changing or deploying FCoP rules, protocol explanations, file naming, YAML configuration, directory structure, or patrol workflows.
Why use it?
It defines the project’s coordination rules and identifies which files are the source of truth when instructions conflict.

Instructions file

not rated 2 today E scan 55,112 tokens copy · 100% MIT
View the source file joinwell52-AI/FCoP
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 instructions/joinwell52-ai/fcop/claude-md
Clone the repo
git clone --depth 1 https://github.com/joinwell52-AI/FCoP

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 FCoP CLAUDE.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/joinwell52-ai/fcop/claude-md.svg)](https://agentmods.dev/instructions/joinwell52-ai/fcop/claude-md)
Your own site
<a href="https://agentmods.dev/instructions/joinwell52-ai/fcop/claude-md"><img src="https://agentmods.dev/badge/instructions/joinwell52-ai/fcop/claude-md.svg" alt="Measured on agentmods" height="20"></a>
Per session 55,112 This file is loaded in full into every session.
When invoked 55,112 The same file — it is already loaded in full.
Security scan E 2 findings. Scan, not verified.
Origin 100% copy Near-identical to another mod 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 $0.55112 $0.55112
Opus 5 $0.27556 $0.27556
Sonnet 5 $0.11022 $0.11022
Haiku 4.5 $0.05511 $0.05511

Measured 5d ago against content hash 796281fea0c4, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade E, and why

FCoP CLAUDE.md scanned grade E with 2 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.

Hidden instructionshighPrompt injection

Directives inside HTML comments, invisible characters or bidirectional overrides are read by the model and not by the person reviewing the file.

<!-- Host-neutral reminder / 宿主中立提示: The conventions below describe FCoP itself (a file-based coordination protocol), not anything specific to Cursor. The `.mdc` wrapper and `alwaysApply` frontmatter are a Cursor-specifi

Reaches for credential fileshighPrivilege escalation

SSH keys, cloud credentials, git-credentials, .npmrc, /etc/shadow: reading these is how a config file becomes a credential leak.

- PM 在 TASK 文档里写 G6 描述："cached diff 对 `\.env|\.aws/credentials` 0 命中"
Origin

This is a copy

100% identical to FCoP AGENTS.md — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

CLAUDE.md · 3,703 lines

How it starts

The opening of the file, as written. The whole thing — 3,703 lines — stays where its author put it; the contents beside it link to each section on GitHub.

FCoP Protocol Rules · agent-host-neutral copy

This file is deployed by fcop for agent hosts that read AGENTS.md / CLAUDE.md as their system-prompt source (Codex, Claude Code, Devin, Cursor, etc.). Cursor IDE users get the same content via .cursor/rules/fcop-rules.mdc and .cursor/rules/fcop-protocol.mdc.

The source of truth is the fcop Python package. To upgrade this file after pip install -U fcop[-mcp], ADMIN runs the MCP tool redeploy_rules() (or calls Project.deploy_protocol_rules(force=True) directly).

Rules version: 3.2.5 · Protocol commentary version: 3.2.5

FCoP Rules · FCoP 协议规则

本文件定义 FCoP 协议的规则，由 fcop MCP 自动部署。 这些规则在具体场景里怎么用——文件怎么命名、YAML 怎么写、目录怎么组织、 巡检怎么触发——属于协议解释，见同目录的 fcop-protocol.mdc。 两个文件冲突时，以本文件为准。

This file defines the rules of the FCoP protocol. It is auto-deployed by the fcop MCP. How each rule actually applies in practice — file naming, YAML shape, directory layout, patrol triggers — is the job of the protocol commentary in fcop-protocol.mdc (same directory). In case of conflict between the two, this file wins.

目的 / Purpose

让 Agent 通过 FCoP 与团队协同工作。

Enable agents to coordinate with a team via FCoP.

"团队"可以是多 Agent 多角色，也可以是单 Agent（solo 模式）。任何情况下：

  • 协作走文件（Rule 0.a）
  • 决策与执行不能由同一个角色独自完成（Rule 0.b）
  • 落到文件里的必须是真的（Rule 0.c）

A "team" can be multi-agent/multi-role or single-agent (solo). In every case: coordination goes through files (Rule 0.a), no single role completes decision-plus-execution alone (Rule 0.b), and what gets landed in a file must be truthful (Rule 0.c).

FCoP 的定位与七大核心概念 / Protocol Position & Seven Core Concepts

协议层定位 / Protocol Layer

FCoP 是多 Agent 协作中的行为治理协议层——约束 Agent 行为，而非调度任务。 它定义 Agent 如何"说清楚自己在做什么"，以及"别人如何验证它做过什么"。 三件核心事：让行为可见（report）、让行为可审计（review）、让行为可约束（capability governance）。

FCoP is the behavior governance protocol layer for multi-agent collaboration — governing agent behavior, not scheduling tasks. It defines how agents declare what they are doing, and how others verify what they have done. Three core responsibilities: observability (report), auditability (review), capability governance.

Read the full file on GitHub · 3,703 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 · 3,703 lines · 55,112 tokens per session scan E 796281fea0c4

Subscribe to this mod's changes

FCoP CLAUDE.md is an instructions file published in the GitHub repository joinwell52-AI/FCoP (2 stars, last pushed today), licensed MIT. It adds 55,112 tokens to every session, about $0.2756 per session on Opus 5. A static security scan graded it E with 2 findings (hidden instructions, reaches for credential files). It is 100% identical to FCoP AGENTS.md, differing in 0 lines, and is treated as a copy.

Building agentsagent-coordinationagent-governanceai-agentsauditabilityclaude-codecursor
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