We build tools that help developers test MCP servers and track AI-generated code. Everything is MIT licensed and free to use.
| Tool | Purpose |
|---|---|
| Bellwether | MCP server testing and drift detection |
| whogitit | AI code attribution at line-level granularity |
MCP Server Testing
Detect when your MCP server's tools, schemas, or descriptions change. The check command provides zero-LLM structural validation that catches breaking changes before they reach production. The optional explore command adds LLM-powered multi-persona behavioral testing and AGENTS.md documentation.
# Initialize config and run structural drift detection
npx @dotsetlabs/bellwether init
bellwether check
# Save baseline and detect drift in CI/CD
bellwether baseline save
bellwether baseline compare --fail-on-drift
# Optional: LLM-powered behavioral exploration
bellwether explore| Feature | Description |
|---|---|
| Schema Validation | Zero-LLM detection of tool additions, removals, schema changes, and renames |
| Security Analysis | Detect SQL injection, XSS, path traversal, command injection, and SSRF vulnerabilities |
| Semantic Validation | Auto-infer and validate semantic types (dates, URLs, emails, IDs) |
| Performance Monitoring | Track response latency with confidence metrics and detect regressions |
| Multi-Persona Exploration | Optional LLM testing from 4 perspectives: Technical Writer, Security Tester, QA Engineer, Novice User |
| CI/CD Integration | Granular exit codes (0-5) for pipeline integration with --fail-on-drift |
| MCP Registry Search | Discover and test servers from the MCP Registry |
Core: check • explore • discover • watch • init • validate-config
Baseline: baseline save • baseline compare • baseline show • baseline diff • baseline accept
Advanced: golden save • golden compare • contract generate • contract validate • verify
Cloud: login • teams • link • projects • upload • history • diff • badge
Auth: auth add • auth remove • auth status • auth clear
- CONTRACT.md — Generated by
checkcommand with schema validation results - AGENTS.md — Generated by
explorecommand with behavioral documentation - JSON / JUnit XML / SARIF — For CI/CD and GitHub Code Scanning integration
The open-source CLI works standalone. The optional cloud platform adds:
- Baseline storage and version history
- Team collaboration with role-based access
- Webhook notifications
- Verification badges
AI Code Attribution
Track AI-generated code at line-level granularity. Know exactly which lines were written by AI, which were modified by humans, and what prompts generated them.
# Install from source
git clone https://github.com/dotsetlabs/whogitit
cd whogitit
cargo install --path .
# One-time setup (installs Claude Code hooks)
whogitit setup
# Initialize repository
whogitit init
# View AI attribution for a file
whogitit blame src/main.rs| Feature | Description |
|---|---|
| Line-Level Attribution | Track whether each line is AI-generated, human-modified, or original |
| Prompt Preservation | Store the prompts that generated code alongside commits |
| Three-Way Diff Analysis | Accurate attribution even when you edit AI code before committing |
| Git-Native Storage | Uses git notes that travel with your repository |
| Claude Code Integration | Automatic capture via hooks |
| GitHub Action | PR comments showing AI attribution summaries with prompts |
| Privacy Protection | Automatic redaction of API keys, passwords, and sensitive data |
Core: blame • show • prompt • summary • status • clear
Setup: setup • init • doctor
Data: export • retention • audit • redact-test
CI/CD: annotations • pager
| Source | Symbol | Description |
|---|---|---|
| AI | ● |
Generated by AI, unchanged |
| AIModified | ◐ |
Generated by AI, then edited by human |
| Human | + |
Added by human after AI edits |
| Original | ─ |
Existed before AI session |
Your data stays on your machine. Both tools work entirely offline with no telemetry and no account required. Bellwether's cloud platform is optional.
| Tool | Language | License | Cloud Required |
|---|---|---|---|
| Bellwether | TypeScript | MIT | Optional |
| whogitit | Rust | MIT | No |
- dotsetlabs.com — Company Website
- docs.bellwether.sh — Bellwether Documentation
Built for developers working with AI.
Washington, D.C.