What is code-migration-kit-with-claude-code CLAUDE.md?

Repository-specific instructions for Anthropic’s code-migration-kit-with-claude-code project. They explain what the kit is, its standing rules, where project files belong, and how to choose models.

Use them when modifying the migration kit, locating its files, or making model-related decisions.

They give Claude Code the project background and constraints needed during code-migration work.

How anthropics/code-migration-kit-with-claude-code configures Claude C

Reuse

Borrowing it

Nothing to install: this file belongs to anthropics/code-migration-kit-with-claude-code. 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/anthropics/code-migration-kit-with-claude-code/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/anthropics/code-migration-kit-with-claude-code

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/anthropics/code-migration-kit-with-claude-code/claude-md/github.svg)](https://agentmods.dev/instructions/anthropics/code-migration-kit-with-claude-code/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/anthropics/code-migration-kit-with-claude-code/claude-md"><img src="https://agentmods.dev/badge/instructions/anthropics/code-migration-kit-with-claude-code/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/anthropics/code-migration-kit-with-claude-code/claude-md"><img src="https://agentmods.dev/badge/instructions/anthropics/code-migration-kit-with-claude-code/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 1,221 This file is loaded in full into every session.

When invoked 1,221 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 unknown 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	$0.01221	$0.01221
Opus 5.5	$0.00488	$0.00488
Sonnet 5.5	$0.00244	$0.00244
Haiku 4.5	$0.00122	$0.00122

Measured 2mo ago against content hash 29c707b099b2, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

code-migration-kit-with-claude-code 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.

CLAUDE.md · 88 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

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 · 88 lines · 1,221 tokens per session scan A 29c707b099b2

Subscribe to this mod's changes

code-migration-kit-with-claude-code CLAUDE.md is an instructions file published in the GitHub repository anthropics/code-migration-kit-with-claude-code (787 stars, last pushed 4mo ago), with no licence file. It adds 1,221 tokens to every session, about $0.0049 per session on Opus 5.5. 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 2026-08-30.

code-migration-kit-with-claude-code CLAUDE.md next to 6 instructions from other repositories
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code-migration-kit-with-claude-code CLAUDE.mdanthropics/code-migration-kit-with-claude-code	Instructions file	787	4mo ago	none	A	1,221	Claude Code
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code-migration-kit-with-claude-code: Instructions file for Claude Code