mcp-tools-guidelines

mcp-tools-guidelines is a cursor rule for Cursor from armanayvazyan/allure-testops-mcp. It costs 0 tokens per session (143 once invoked), scanned A, original, MIT.

A set of project rules for building MCP tools, which are connections that let an agent use external services or functions.

In plain words
What is it for?
Use it when adding or changing tools under `src/tools`, updating their documentation, checking project context, or running related integration tests.
Why use it?
It keeps tool behavior consistent and makes failures easier to understand. It also reduces repeated request and authentication code while protecting existing parameter behavior.

Cursor rule for Cursor

Written for Cursor: installed under .cursor/.

Good fit Use it when adding or changing tools under src/tools, updating their documentation, checking project context, or running related integration tests.

Compare 6 cursor rules from other repositories ↓
Install with agentmods
npx agentmods add rules/armanayvazyan/allure-testops-mcp/mcp-tools-guidelines
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.

Clone the repo
git clone --depth 1 https://github.com/armanayvazyan/allure-testops-mcp

Made for: Cursor.

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 mcp-tools-guidelines

README.md
[![agentmods](https://agentmods.dev/badge/rules/armanayvazyan/allure-testops-mcp/mcp-tools-guidelines/github.svg)](https://agentmods.dev/rules/armanayvazyan/allure-testops-mcp/mcp-tools-guidelines)
Your own site
<a href="https://agentmods.dev/rules/armanayvazyan/allure-testops-mcp/mcp-tools-guidelines"><img src="https://agentmods.dev/badge/rules/armanayvazyan/allure-testops-mcp/mcp-tools-guidelines/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 mcp-tools-guidelines

Your own site · 80×15
<a href="https://agentmods.dev/rules/armanayvazyan/allure-testops-mcp/mcp-tools-guidelines"><img src="https://agentmods.dev/badge/rules/armanayvazyan/allure-testops-mcp/mcp-tools-guidelines.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 0 Nothing until a file matches its globs; then the whole rule loads.
When invoked 143 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 $0.00143
Opus 5 $0.00000 $0.00072
Sonnet 5 $0.00000 $0.00029
Haiku 4.5 $0.00000 $0.00014

Measured 9d ago against content hash dcb79375599e, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

mcp-tools-guidelines 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 9d 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.

.cursor/rules/mcp-tools-guidelines.mdc · 19 lines

What it actually says

MCP Tool Guidelines

  • Keep tool schema descriptions precise and user-focused; update docs/examples when behavior changes.
  • Maintain backward compatibility for tool parameters unless a breaking change is explicitly requested.
  • Validate required project context (projectId or projectName) consistently with existing tool patterns.
  • Return actionable, structured errors; avoid vague failure messages.
  • Prefer shared API/auth helpers instead of duplicating request logic in each tool file.

Verification

  • For tool behavior changes, run relevant integration tests in tests/integration.
  • Confirm no regressions in tool registration and names.
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. 9d ago First seen · 19 lines · 0 tokens per session scan A dcb79375599e

Subscribe to this mod's changes

mcp-tools-guidelines is a cursor rule published in the GitHub repository armanayvazyan/allure-testops-mcp (20 stars, last pushed 2d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 143 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 2026-08-30.