What is flanner CLAUDE.md?

Repository instructions for managing design, architecture, and planning documents in the `.plans/` folder through flanner tools.

Use it when creating or revising project plans, design documents, or architecture documents.

It prevents plans from being written in the wrong place or without the required header and version history.

How jaysonmulwa/flanner configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to jaysonmulwa/flanner. 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/jaysonmulwa/flanner/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/jaysonmulwa/flanner

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/jaysonmulwa/flanner/claude-md/github.svg)](https://agentmods.dev/instructions/jaysonmulwa/flanner/claude-md)

Your own site

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

Per session 150 This file is loaded in full into every session.

When invoked 150 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 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.

Model	Per session	Once invoked
Fable 5.1	$0.00150	$0.00150
Opus 5.5	$0.00060	$0.00060
Sonnet 5.5	$0.00030	$0.00030
Haiku 4.5	$0.00015	$0.00015

Measured 2mo ago against content hash 32ba889b4583, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

flanner 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 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.

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.

Origin

This is a copy

100% identical to flanner 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 · 14 lines

What it actually says

Plan files (managed by flanner)

Design, architecture, and planning markdown for this repo is managed by flanner and lives in .plans/ (project: flanner).

When the user asks to save a plan/design/architecture doc, confirm it is a plan, then use the flanner MCP tools instead of writing the file directly:

get_plan_config to confirm the location and header format
create_plan_file_tool(project_id, name, content) to create it (adds the YAML header and versions it)
update_plan_file_tool(plan_file_id, content) to revise it

Never hand-write the YAML header; the tools generate it.

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 · 14 lines · 150 tokens per session scan A 32ba889b4583

Subscribe to this mod's changes

flanner CLAUDE.md is an instructions file published in the GitHub repository jaysonmulwa/flanner (5 stars, last pushed 1mo ago), licensed MIT. It adds 150 tokens to every session, about $0.0006 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 100% identical to flanner AGENTS.md, differing in 0 lines, and is treated as a copy.

Collaboration Planning claude cli markdown mcp

flanner CLAUDE.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
flanner CLAUDE.mdjaysonmulwa/flanner	Instructions file	5	1mo ago	MIT	A	150	Claude Code
vscode buildNext.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	9,719	GitHub Copilot
next.js AGENTS.mdvercel/next.js	Instructions file	143k	today	MIT	A	7,461	Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	5,516	GitHub Copilot
langchain AGENTS.mdlangchain-ai/langchain	Instructions file	149k	today	MIT	A	4,680	Codex, OpenCode
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	3,093	GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness	Instructions file	275k	3d ago	MIT	A	4,313	Codex, OpenCode

flanner: Instructions file for Claude Code