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link-cli: Instructions file for Claude Code

CLAUDE.md

link-cli CLAUDE.md is an instructions file for Claude Code from stripe/link-cli. It costs 7,811 tokens per session, scanned A, original, MIT.

Project instructions for Link CLI, a command-line tool that gets secure, one-time payment credentials from a Link wallet. It covers a pnpm and Turborepo monorepo, meaning one repository containing multiple related packages.

In plain words
What is it for?
Use it when working on the Link SDK or CLI, installing dependencies, building, running tests, checking types, or formatting code.
Why use it?
It gives coding agents the project layout, required commands, and testing instructions so changes are made and checked consistently across the packages.

Instructions file for Claude Code ✓ vendor

Written for Claude Code: the file is CLAUDE.md. Also seen: mentions CLAUDE.md; mentions Claude Code; mentions AGENTS.md.

This is stripe/link-cli's own configuration. It tells Claude Code how to work on link-cli itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything link-cli configures →

not rated 865repo +11 changed 2d ago A scan 7,811 tokens original MIT
View source ↗ stripe/link-cli link.com
About the project

stripe/link-cli is a command-line tool that lets agents obtain temporary payment credentials from a Link wallet for approved purchases without exposing the user's real card details. It is used by agents to complete web checkouts or programmatic payments while requiring purchase approval. The catalogue entries provide components for integrating the CLI with agents.

stripe/link-cli · 865 stars · on GitHub · link.com

Reuse

Borrowing it

Nothing to install: this file belongs to stripe/link-cli. 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/stripe/link-cli/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/stripe/link-cli

Made for: Claude Code.

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Per session 7,811 This file is loaded in full into every session.
When invoked 7,811 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.07811 $0.07811
Opus 5.5 $0.03124 $0.03124
Sonnet 5.5 $0.01562 $0.01562
Haiku 4.5 $0.00781 $0.00781

Measured 2d ago against content hash faecc5f6d55f, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

link-cli 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 2d 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 · 255 lines

How it starts

The opening of the file, as written. The whole thing — 255 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 when working with code in this repository.

Project Overview

Link CLI — lets agents get secure, one-time-use payment credentials from a Link wallet. pnpm + Turborepo monorepo:

  • @stripe/link-sdk (packages/sdk): Typed Link API client and resource implementations. It accepts accessToken or getAccessToken; it does not own OAuth state. Entry: src/index.ts.
  • Link Go SDK (packages/sdk-go): Go equivalent of @stripe/link-sdk. It accepts AccessToken or GetAccessToken; it does not own OAuth state. Package name: link.
  • Link Python SDK (packages/sdk-python): Python 3.11+ library covering the Go SDK's API resources with Python conventions. Distribution name: link-sdk; import name: link. HTTPX Client and AsyncClient expose typed keyword arguments and Pydantic response models. Uses uv for Python, dependencies, environments, builds, and development commands.
  • @stripe/link-integrations-better-auth (packages/integrations/better-auth): Generic OAuth wrapper for Link sign-in and connecting wallets. Link's stable /userinfo.id identifies the provider account, using the SDK's UserInfo type through a development dependency. The /client export provides linkClient(): link.connect() wraps native linkSocial, while link.disconnect() checks an authoritative fresh session, ownership, provider, and last-account policy before revoking the stored refresh token and deleting the account. Revocation failures retain the account and credentials. Better Auth owns OAuth state, token storage, and refresh; wallet API calls remain in the SDK.
  • @stripe/link-integrations-eve (packages/integrations/eve): Native Eve extension built with eve extension build. Static tool files wrap @stripe/link-sdk/tools and accept exactly one of accessToken or an Eve auth provider. OAuth tools use ctx.getToken and map Link 401s to ctx.requireAuth. The consuming application owns its OAuth provider, including token exchange, storage, refresh, and callback routing; this package supplies no OAuth client or storage abstraction. Static-token mode does not refresh. Interactive OAuth requires an authenticated Eve user. create_spend_request defaults to Eve approval via always(), which consumers can override; request_approval: false defers Link approval for a draft and does not authorize spending. Its extension/skills/create-payment-credential/SKILL.md and extension/skills/financial-insights/SKILL.md adapt the root skills to native tool calls and Eve auth; maintain these copies alongside shared wallet behavior and tool changes. Workspace development and CI require Node 24+.
  • @stripe/agent-identity (packages/agent-identity): Service-side verification of Link bearer attestations and selectively disclosed identity presentations. Independent of the wallet client, using Node built-ins and jose, with ESM/CommonJS exports and a /testing entry point. Consumers require Node 22+; workspace development uses Node 24+. Uses tsup, TypeScript, and Vitest. Run pnpm build, pnpm typecheck, and pnpm test from packages/agent-identity; follow its README for package, documentation, and HTTP example checks. Guides live in READMEs; runnable examples use example/. Read its scoped AGENTS.md before changing verification behavior.
  • @stripe/link-cli (packages/cli): Commander.js + Ink/React CLI that consumes @stripe/link-sdk. Entry: src/cli.tsx.

Read the full file on GitHub · 255 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. 2d ago Changed · +1 lines · +198 tokens per session faecc5f6d55f
  2. 7d ago Changed · +1 lines · +41 tokens per session 66050084e397
  3. 14d ago Changed · +1 lines · +152 tokens per session 2f526d837d61
  4. 16d ago Changed · +24 tokens per session 1fa83f49d522
  5. 20d ago Changed · +1 lines · +202 tokens per session 25521637d20e
  6. 21d ago Changed · +4 tokens per session fc2d64b3c33d
  7. 23d ago Changed · +6 lines · +293 tokens per session 776257eaf4c3
  8. 26d ago Changed · +8 lines · +238 tokens per session 88a55edf716f
  9. 29d ago Changed · +16 lines · +278 tokens per session c0676d28013f
  10. 1mo ago First seen · 221 lines · 6,381 tokens per session scan A e6a92b707e3b

Subscribe to this mod's changes

link-cli CLAUDE.md is an instructions file published in the GitHub repository stripe/link-cli (865 stars, last pushed yesterday), licensed MIT. It adds 7,811 tokens to every session, about $0.0312 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.

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