What is pubspec-assist CLAUDE.md?

Project guidance for Pubspec Assist, a VS Code extension that manages Dart and Flutter package entries in pubspec.yaml using pub.dev, the main public package registry for Dart. It covers the extension's code, commands, tests, and release checks.

Use it when adding or fixing extension commands, changing pubspec dependency handling, updating tests, or preparing a VSIX release.

It helps contributors understand where dependency editing, package searching, sorting, API access, and packaging are implemented before making changes.

How jeroen-meijer/pubspec-assist configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to jeroen-meijer/pubspec-assist. 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/jeroen-meijer/pubspec-assist/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/jeroen-meijer/pubspec-assist

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/jeroen-meijer/pubspec-assist/claude-md/github.svg)](https://agentmods.dev/instructions/jeroen-meijer/pubspec-assist/claude-md)

Your own site

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

Per session 1,429 This file is loaded in full into every session.

When invoked 1,429 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.

Model	Per session	Once invoked
Fable 5.1	$0.01429	$0.01429
Opus 5.5	$0.00572	$0.00572
Sonnet 5.5	$0.00286	$0.00286
Haiku 4.5	$0.00143	$0.00143

Measured 2mo ago against content hash 8abd786bf011, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

pubspec-assist 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 · 116 lines

How it starts

The opening of the file, as written. The whole thing — 116 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Pubspec Assist

VS Code extension for adding and updating Dart/Flutter pubspec.yaml dependencies via pub.dev — fuzzy search, comma-separated multi-package add, auto-sort, and version resolution without leaving the editor.

Tech Stack

TypeScript 6, ESLint 10 (flat config), Mocha 11, esbuild
yaml v2 for pubspec parsing/serialization
fuse.js for fuzzy package search
npm for installs, scripts, and CI
VS Code engine ^1.90.0
@vscode/vsce for packaging and Marketplace publish

Key Paths

src/extension.ts — activation, command registration
esbuild.mjs — bundles src/extension.ts + runtime deps into out/extension.js
src/functions/addDependency.ts — add/update dependency flow
src/functions/sortAllDependencies.ts — sort pubspec dependencies
src/helper/yamlDependencies.ts — YAML dependency map helpers (unit-testable)
src/helper/gitIssue.ts — Git-hosted dependency detection
src/model/pubApi.ts — pub.dev API client (fetch)
tool/check_changelog_pr.sh — CI: verify prepended ## Upcoming entries
tool/check_vsix.sh — CI: VSIX contains bundled yaml/fuse.js
tool/rewrite_changelog_for_release.sh — insert version section on release
tool/prepare_release.sh — open a release PR (changelog + version bump)
tool/verify_release_publish.sh — sanity checks before publish
.github/actions/setup-node-deps — Node 22 + actions/cache for ~/.npm / node_modules / ESLint
.github/workflows/ci.yml — lint + test + package on PRs
.github/workflows/changelog.yml — changelog enforcement on PRs
.github/workflows/semantic-pull-request.yml — semantic PR title check
.github/workflows/publish.yml — merged release PR → Marketplace + GitHub release + tag

Common Commands

npm install
npm run compile
npm run watch
npm run lint
npm test
npm run package          # build .vsix locally
npm run vscode:publish   # publish to Marketplace (requires VSCE_PAT)

Press F5 in VS Code to launch an Extension Development Host.

Read the full file on GitHub · 116 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 · 116 lines · 1,429 tokens per session scan A 8abd786bf011

Subscribe to this mod's changes

pubspec-assist CLAUDE.md is an instructions file published in the GitHub repository jeroen-meijer/pubspec-assist (55 stars, last pushed 16d ago), licensed MIT. It adds 1,429 tokens to every session, about $0.0057 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.

Frontend Kotlin and Swift Languages

pubspec-assist CLAUDE.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
pubspec-assist CLAUDE.mdjeroen-meijer/pubspec-assist	Instructions file	55	16d ago	MIT	A	1,429	Claude Code
vscode buildNext.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	9,719	GitHub Copilot
next.js AGENTS.mdvercel/next.js	Instructions file	143k	yesterday	MIT	A	7,461	Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchain	Instructions file	149k	yesterday	MIT	A	4,680	Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	5,516	GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	3,093	GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness	Instructions file	274k	2d ago	MIT	A	4,313	Codex, OpenCode

pubspec-assist: Instructions file for Claude Code