
Connect Test Assertion Density Calculator to your AI
Set it up once and it works in ChatGPT, Claude, Cursor, and any other client you love. It all runs safely in the background, so you can relax and focus on what really matters. Find empty test blocks and fix weak test coverage.
Developed, maintained, and hosted by Vinkius.
MCP VERIFIED · PRODUCTION READY · VINKIUS GUARANTEED
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Works with modern AI clients that support MCP, including ChatGPT, Claude, Cursor, and more.
Your AI does the work. We keep it safe and sound.
No other AI tool gives you this. Your workflow runs in the client you already love, your account stays protected, and you decide what the agent can and cannot do. It is the whole reason to make the switch.
Each Connector lives inside our infrastructure, the same place where your workflow runs. The three things below are already part of it, working quietly in the background so you never have to think about them. Nothing to add, nothing to set up, nothing to worry about.

Each Connector runs inside its own sealed environment.
Each Connector runs inside its own sealed V8 runtime — no access to your files, your system, or other servers. A Connector never sees past its own request.
One switch stops every agent. Instantly.
One action deactivates every Connector, revokes every token, and ends every session at once. AI Governance keeps the record.
Spending limits that pause instead of surprise.
Every user keeps their own connections and credentials, isolated from everyone else. Anything that would cross your spending limit is held for your approval, not billed.
Three controls, built into the layer your AI connects through.
Curated set · 3 capabilities
We ship only the actions that matter.
01-03
3 capabilities in this set.
Part of 3 available through Test Assertion Density Calculator.
- 01
Calculate assertion metrics
This capability calculates the mathematical ratio between test cases and assertions in your source files.
- 02
Get standard threshold presets
This capability provides predefined density standards to compare your current metrics against.
- 03
Summarize empty test locations
This capability generates a report showing exactly where your test cases lack assertion coverage.
Real work
What teams actually run
Pruning Test Suites
Identify and remove tests that have zero assertions to speed up your CI/CD pipeline.
Code Review Audits
Check a pull request to ensure new tests actually include meaningful assertions.
Refactoring Safety
Verify that your existing tests are dense enough to catch regressions during a refactor.
Standardizing Quality
Apply strict density presets across a large monorepo to enforce testing rigor.
One connector, every AI
Test Assertion Density Calculator works with the most popular AI clients.
These are the most popular clients, each with a step-by-step guide: one link, set up once, with governance and visibility built in. And because everything runs on the MCP standard, the same connection also works in any other compatible client — nothing to rebuild.
Claude
ChatGPT
Gemini
Perplexity
Grok
Microsoft Copilot
Cursor
VS Code
Windsurf
JetBrains
Cline
LangChain
Vercel AI SDK
Lovable
Z.ai
Raycast
Qwen Code
Kimi Code
Le ChatBuilding your own app? The connector is yours to use.
You don't need a client to put Test Assertion Density Calculator to work: the same hosted connection plugs into your own applications and agent code, with the same governance on every request. Build with it, chat with it — one connection for both.
Observed, not estimated
744ms average. Fast in production.
Test Assertion Density Calculator is checked daily against the live service.
- Fastest day
- 577ms
- Slowest day
- 936ms
- 14-day trend
- Slowing+14%
Connect your client
One URL. Every client.
Activate the Connector, copy your link, and paste it into the client you already use. 3 capabilities arrive ready to run.
Preview access · not provider authentication
The vk_preview_* token belongs to Vinkius preview infrastructure. It lets Claude discover and display the capabilities of Test Assertion Density Calculator, so you can see the experience inside your AI.
It does not authenticate your account with Test Assertion Density Calculator. Actions requiring credentials or live account data may not run until you activate the Connector and authorize the service.
Test Assertion Density Calculator Connector
You're all set. Choose your MCP client and follow the setup instructions.
https://edge.vinkius.com/vk_preview_I1mtGckhWGEp893PNlGAkUXuVgKFAKmxm6HXgSTv/mcpClaude Desktop
Follow the steps below to connect in seconds.
- 1In Claude Desktop, open Settings → Connectors.
- 2Click “Add custom connector” and paste the connector link above as the remote MCP server URL.
- 3Click Add and start a new chat — Test Assertion Density Calculator capabilities are ready to use.
{
"mcpServers": {
"test-assertion-density-calculator-mcp": {
"url": "https://edge.vinkius.com/vk_preview_I1mtGckhWGEp893PNlGAkUXuVgKFAKmxm6HXgSTv/mcp"
}
}
}
Claude
ChatGPT
Cursor
VS Code
Windsurf
Claude Code
JetBrains
Cline
Step-by-step instructions for each client are in the guide. How to connect
Guided setup for Claude? Set up Test Assertion Density Calculator in Claude and other AIs
Who it's for
Built for the work Test Assertion Density Calculator owners hand off.
This MCP is built for engineers who need to maintain high-quality, meaningful test suites.
- 01
Software Engineer
Uses the MCP to audit their own test files for hollow test blocks.
- 02
QA Engineer
Hands off code to the agent to verify that automated tests are actually validating behavior.
- 03
DevOps Engineer
Integrates density checks into the pipeline to prevent ineffective code from merging.
FAQ
Questions Test Assertion Density Calculator owners ask.
- 01
What is assertion density?
It is the mathematical relationship between the number of test cases and the number of assertions within those tests.
- 02
How does this MCP find empty tests?
It scans your code for test blocks like 'it' or 'test' and checks if they contain any assertion calls like 'expect' or 'assert'.
- 03
Which AI clients can use this MCP?
You can use this with any MCP-compatible client, including Claude, Cursor, Windsurf, and VS Code.
- 04
What are the density presets?
The MCP provides three standard presets: strict, balanced, and loose.
- 05
Do I need to host this myself?
No, Vinkius hosts and manages the MCP for you. You just connect your client and it works.
- 06
How can I find empty tests in my suite?
You can use the summarize_empty_test_locations capability after running calculate_assertion_metrics to get a report of specific line numbers where tests lack assertions.
- 07
What is the default density threshold?
The default minimum density threshold is 1.0 assertion per test case.
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Connect Test Assertion Density Calculator to Claude, Cursor, ChatGPT & more
