Spec Driven Development
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
Description from the maker (original English)
Ship better Java with your coding agent.
These three are never merged into one score: opinions, measurements and popularity are different things.
We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.
Pick the AI app you use, then copy the settings.
You need
Which app do you use?
Pick your app above. We remember it, so next time the button says “Install in …”.
Works in Claude on the web, desktop and mobile:
https://api.jaipilot.com/functions/v1/jaipilot/mcpRun this in your terminal
claude mcp add --transport http jaipilot https://api.jaipilot.com/functions/v1/jaipilot/mcpPaste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"jaipilot": {
"url": "https://api.jaipilot.com/functions/v1/jaipilot/mcp"
}
}
}Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.
Paste into .vscode/mcp.json in your project
{
"servers": {
"jaipilot": {
"type": "http",
"url": "https://api.jaipilot.com/functions/v1/jaipilot/mcp"
}
}
}Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.
ChatGPT connects only to servers on the internet:
https://api.jaipilot.com/functions/v1/jaipilot/mcpMenu names can differ slightly by plan and over time.
Your choice stays on this device in a cookie; no account needed.
These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.
We have not read this server’s tool list yet; we check endpoints in rotation.
We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 6, 2026
The registry name was verified with the GitHub account JAIPilot, which owns the repo
We have not read this repo from GitHub yet
We have not read this repo from GitHub yet
Not checked yet; we check endpoints in rotation
Not checked yet; we check endpoints in rotation
Not checked yet; we read the tool list when we check the endpoint
Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.
It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.
The registry does not list a required key, though some servers ask you to sign in on first use.
It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.
The GitHub repo last changed –, and the latest version (7.2.1) reached the registry 2 months ago.
Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.
In the same category: Spec Driven Development, Remote Desktop Commander, LickityClick
Servers in the same category from other makers, sorted by stars.
Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
Remote Desktop Commander: use files, terminal and processes on your own computers from any AI app.
Create, edit and track LickityClick short links, campaigns and click stats from your AI assistant.
Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.
JAIPilot — faster Java testing, stronger coverage, fewer bugs
Make your tests bulletproof.
~5× faster testing.
Enterprise grade unit tests. A 90%+ line coverage target.
Your Java testing specialist—straight from the terminal. Generate, repair, and verify tests. Fewer prompts. Stronger assertions.
Optimized for outcomes. Choose an outcome. Select your code. Get verified tests. Start with the CLI. Add MCP when you want JAIPilot inside your coding agent.
Download CLI · Get started · MCP setup · JAIPilot.com
34.3% → 97.1% line coverage for two classes in 1m 53s. Added 13 tests; all 949 module tests passed.
85.7% → 100% line coverage across the project in 3m 21s. Added 36 tests with coverage_100; all 111 tests passed.
Production code preserved. Actual Terminal recordings; GIFs shorten idle waits. Reported times are full job durations with warm build caches; results vary. Commands, recordings, and full measurements →
Frontier LLM reasoning. Optimized testing tools. Prompts tailored to each outcome. Parallel workers in the managed service. Independent class tasks can run concurrently; local execution uses your toolchain and supported hardware parallelism.
90%+ line coverage target for generate_tests, improve_coverage, and lock_behavior, measured in selected production code when coverage is configured. Gaps and blockers are reported. Behavior baselines must pass before edits.
| Outcome | Workflow |
|---|---|
| Generate unit tests | generate_tests |
| Improve coverage | improve_coverage |
| Fix failing tests | fix_tests |
| Stabilize flaky tests | stabilize_flaky_tests |
| Test current changes | test_current_changes |
| Lock behavior before a refactor | lock_behavior |
| Target 100% line coverage | coverage_100 |
Requires Git, a JDK, and your project's build tools.
macOS / Linux
curl -fsSL https://raw.githubusercontent.com/JAIPilot/jaipilot/main/install.sh | sh
Windows (PowerShell)
irm https://github.com/JAIPilot/jaipilot/releases/latest/download/install.ps1 | iex
npm
npm install -g jaipilot
Homebrew (macOS / Linux)
brew install JAIPilot/tap/jaipilot
Sign in, then run inside your Java repository:
jaipilot auth login
jaipilot run improve_coverage --class com.acme.OrderService
Same JAIPilot account, subscription, and credits. Automatic update checks before workflows.
Install paths, manual updates, and troubleshooting →
jaipilot run generate_tests --class com.acme.OrderService
jaipilot run test_current_changes --all jaipilot run lock_behavior --path src/main/java/com/acme
Scope: whole repository, classes, paths, or selected lines. Review the result and git diff before accepting changes.
For a fresh, verified coverage target on a single-module Maven project:
jaipilot run improve_coverage --all --coverage-target 80
The Maven adapter also provides local coverage checks and generation:
./mvnw com.jaipilot:jaipilot-maven-plugin:1.2.1:check -Djaipilot.coverage.line=80
./mvnw com.jaipilot:jaipilot-maven-plugin:1.2.1:run -Djaipilot.coverage.line=80
The Maven adapter 1.2.1 is published on Maven Central. Use mvnw.cmd in Windows PowerShell. Adapter setup, class/branch targets, and supported JaCoCo rules →
All commands, scopes, JSON output, and exit codes →
Fast testing. High coverage. Stronger tests. Less work for your coding agent.
Same refactor. Two fresh Codex sessions. Two Kafka utility classes. The MCP session used JAIPilot automatically, with no repository instruction file or extra testing prompt.
| Saved regression suite | Codex alone | Codex + JAIPilot |
|---|---|---|
| Passing JUnit tests | 3 | 16 |
Line coverage of the selected Deadline class | 47.1% | 100% |
| Line coverage across both fixture classes | 40% | 65.7% |
| Branch coverage across both fixture classes | 30% | 80% |
| Injected faults caught by the saved tests | 3/10 | 7/10 |
13 more reusable tests. Four more deliberately introduced bugs caught. Same model, settings, initial tests, and warm build caches. One paired example; results vary.
The 90% target applies to selected code. Deadline: 100% (17/17 lines). The combined 65.7% (23/35) includes untargeted LockUtils, unchanged at 6/18 covered lines.
Method, evidence, and reproduction →
Optional: make Codex, Claude Code, or another MCP agent better at Java testing. Give it a tested baseline before edits and real failures to guide repairs.
lock_behavior creates and runs characterization tests before production edits, targeting 90%+ line coverage when configured.verify_behavior reruns the original baseline. Your agent investigates failures and repairs unintended changes before finishing.Passing tests protect the behavior they exercise. Review old expectations for intentional behavior changes.
Codex
codex mcp add jaipilot -- jaipilot mcp --repo /absolute/path/to/java-repository
Claude Code
claude mcp add --transport stdio jaipilot -- jaipilot mcp --repo /absolute/path/to/java-repository
Start a new agent session. MCP instructions and tool descriptions include the workflow. No repository instruction file required. Tests and commands run locally. Jobs run in the background; 1 hour per local command by default.
Requires a build with the mcp command. Source setup, tool contracts, and timeout options →
Builds and tests run locally. Selected source, project context, and command output go to JAIPilot's managed service and model provider. Sign-in credentials stay local with user-only permissions.
Privacy details · Ask a question · Report an issue · Report a vulnerability privately
MIT License · JAIPilot.com