maintenance

maintenance is a skill for Claude Code, Codex from cyanheads/git-mcp-server. It costs 53 tokens per session (1,244 once invoked), scanned A, original, Apache-2.0.

A procedure for investigating dependency updates in a Bun project. Dependencies are external packages the project relies on, and Bun is the tool used here to manage them, run checks, and rebuild the project.

In plain words
What is it for?
Use it to check outdated packages, apply latest-version updates, review changelogs against the project’s imports, adopt needed changes, rebuild, and run tests.
Why use it?
It helps determine what changed, whether the updated packages affect the code, and whether the project still works after updates. It supports both a complete update process and a review of updates already applied.

Skill for Claude CodeCodex

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 skills/cyanheads/git-mcp-server/maintenance
Any agent
npx skills add cyanheads/git-mcp-server --skill maintenance
Clone the repo
git clone --depth 1 https://github.com/cyanheads/git-mcp-server

Made for: Claude Code, Codex.

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 maintenance

README.md
[![agentmods](https://agentmods.dev/badge/skills/cyanheads/git-mcp-server/maintenance.svg)](https://agentmods.dev/skills/cyanheads/git-mcp-server/maintenance)
Your own site
<a href="https://agentmods.dev/skills/cyanheads/git-mcp-server/maintenance"><img src="https://agentmods.dev/badge/skills/cyanheads/git-mcp-server/maintenance.svg" alt="Measured on agentmods" height="20"></a>
Per session 53 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,244 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. Scan, not verified.
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 $0.00053 $0.01244
Opus 5 $0.00026 $0.00622
Sonnet 5 $0.00011 $0.00249
Haiku 4.5 $0.00005 $0.00124

Measured 4d ago against content hash 4f7780533418, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

maintenance scanned grade A with 1 finding 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 4d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

Use `WebFetch` or `Bash + curl` (for full content) against the package's GitHub releases or CHANGELOG. Skim tag-to-tag diffs rather than scrolling the full file.
skills/maintenance/SKILL.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.

When to Use

  • After running bun update --latest yourself and wanting to review the impact (Mode B — typical)
  • To run the whole flow end-to-end — outdated check → update → investigate → adopt → verify (Mode A)

Entry Modes

Mode Starting Point First Step
A — Full flow Lockfile is current; want to update Step 1
B — Post-update review User already ran bun update --latest + bun run rebuild + bun test Skip to Step 3 with the update output or git diff bun.lock

Both modes converge at Step 3 and end at Step 6.

Steps

1. Survey what's outdated (Mode A only)

bun outdated

Note: bun update --latest crosses semver majors; bun update alone respects ranges. Use --latest unless a package is intentionally pinned.

2. Apply the update (Mode A only)

bun update --latest

Capture the ↑ package old → new lines from stdout — these feed Step 3. Alternatively, git diff bun.lock surfaces version deltas after the fact.

3. Investigate changelogs

For each updated package, fetch the release notes or CHANGELOG entries between old and new versions, then cross-reference changes against actual imports in src/. Output per package: what changed, impact on this project, action items.

Focus on packages this server directly depends on:

Package Impact Check
@modelcontextprotocol/sdk Protocol version bumps, breaking handler signatures, new capabilities
hono / @hono/node-server / @hono/mcp HTTP transport API changes, middleware signatures
@opentelemetry/* Instrumentation contract changes, exporter config
tsyringe / reflect-metadata DI container behavior, decorator semantics
jose JWT/JWKS verification API
pino / pino-pretty Logger API, transport config
zod Schema API (e.g., v3 → v4 refinement changes, .describe() behavior)
typescript New strict checks, lib changes affecting existing types
vitest / @vitest/coverage-v8 Test runner behavior, coverage provider changes
eslint / typescript-eslint New rules flagging existing code
Cross-spawn / execa Child-process spawning semantics used by CliGitProvider

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.

  1. 4d ago First seen · 116 lines · 53 tokens per session scan A 4f7780533418

Subscribe to this mod's changes

maintenance is a skill published in the GitHub repository cyanheads/git-mcp-server (239 stars, last pushed 10d ago), licensed Apache-2.0. It adds 53 tokens to every session and 1,244 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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