mcp-linear: Command for GitHub Copilot

.github/prompts/review-mcp-contract.prompt.md

review-mcp-contract is a command for GitHub Copilot from tacticlaunch/mcp-linear. It costs 0 tokens per session (100 once invoked), scanned A, original, MIT.

A review procedure for checking changes to an MCP tool interface in the mcp-linear repository. It compares the declared inputs and outputs with runtime checks, registrations, documentation, and service behaviour.

In plain words
What is it for?
Use it to review a current diff, report findings by severity with file references, and check registration, schemas, null values, enum handling, SDK use, and negative tests.
Why use it?
It finds contract errors that can make a tool appear available while rejecting valid input or returning data in an unexpected shape. It also checks for missing tests and unsafe handling of optional values.

Command for GitHub Copilot

Written for GitHub Copilot: a Copilot chat mode or prompt.

This is tacticlaunch/mcp-linear's own configuration. It tells GitHub Copilot how to work on mcp-linear 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 mcp-linear configures →

Reuse

Borrowing it

Nothing to install: this file belongs to tacticlaunch/mcp-linear. 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/tacticlaunch/mcp-linear/main/.github/prompts/review-mcp-contract.prompt.md
Clone the repo
git clone --depth 1 https://github.com/tacticlaunch/mcp-linear

Made for: GitHub Copilot.

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 review-mcp-contract

README.md
[![agentmods](https://agentmods.dev/badge/commands/tacticlaunch/mcp-linear/review-mcp-contract/github.svg)](https://agentmods.dev/commands/tacticlaunch/mcp-linear/review-mcp-contract)
Your own site
<a href="https://agentmods.dev/commands/tacticlaunch/mcp-linear/review-mcp-contract"><img src="https://agentmods.dev/badge/commands/tacticlaunch/mcp-linear/review-mcp-contract/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.

agentmods 80×15 button for review-mcp-contract

Your own site · 80×15
<a href="https://agentmods.dev/commands/tacticlaunch/mcp-linear/review-mcp-contract"><img src="https://agentmods.dev/badge/commands/tacticlaunch/mcp-linear/review-mcp-contract.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 100 The whole file, excluding the scripts and references it only reads on demand.
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 $0.00000 $0.00100
Opus 5.5 $0.00000 $0.00040
Sonnet 5.5 $0.00000 $0.00020
Haiku 4.5 $0.00000 $0.00010

Measured 25d ago against content hash 996dde8682bd, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

review-mcp-contract 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 25d 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.

.github/prompts/review-mcp-contract.prompt.md · 14 lines

What it actually says

Review the current diff in mcp-linear as an MCP contract reviewer.

Focus on:

  • input_schema versus type guard mismatches
  • output_schema versus normalized service output mismatches
  • missing registration in definitions or handlers index files
  • missing TOOLS.md updates
  • nullable field or enum handling bugs
  • direct GraphQL usage without a clear SDK limitation
  • missing negative tests or nullable-clear tests

Return findings first, ordered by severity, with file references.

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. 25d ago First seen · 14 lines · 0 tokens per session scan A 996dde8682bd

Subscribe to this mod's changes

review-mcp-contract is a command published in the GitHub repository tacticlaunch/mcp-linear (148 stars, last pushed 17d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 100 tokens. 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 2026-10-05.