Developer Tools AI Tools

An open-source Stripe-like payment layer for AI agents and paid MCP tools, with spend authorization, per-call charging, and settlement flows for test credits in beta.

A playable Three.js office for local Herdr agents, with live terminals, coffee breaks, and a shotgun. It includes run instructions, configuration flags, controls, and notes on live vs demo mode.

A self-hostable MCP endpoint that centralizes accounts, memory, skills, secrets, and access controls for AI agents. It supports multiple providers, profile-based permissions, audit logs, and deployment on your own machine or cloud.

An open-source collection of Claude Code skills, agents, and plugins for improving agent output quality across tools like Cursor, Gemini CLI, OpenCode, and Antigravity.

A local CLI that records a codebase’s behavior and gates AI-driven refactors against a frozen baseline. It runs declared probes, compares outputs byte-for-byte, and returns a simple pass/fail signal for agent workflows.

Bridle is an open protocol and small CLI for handing context and work between coding agents on different machines, with opt-in policy controls on both sides.

Subpool is a self-hosted control plane for managing AI subscription and API capacity across teams. It pools authorized accounts, issues employee-specific keys, exposes OpenAI-compatible endpoints, and tracks usage without storing prompts or responses.

Open-source harness for measuring how consistently hosted LLM APIs return the same output across repeated runs and over time, with raw transcripts, scoring, and a static leaderboard generator.

Hedgemony is a Python tool that checks AI-written code for fabricated packages, invented APIs, impossible calls, and contradictions between code and stated examples, using interpreter and registry checks rather than another model.

Open-source benchmark that measures which developer tools LLMs recommend when asked to build real web apps. It runs fixed prompts against a panel of models, parses the tool recommendations, and publishes rankings and head-to-head comparisons.

dmx is an open-source MCP server that adds structured, gated workflows to coding agents like Cursor, Claude Code, and Copilot. It focuses on loop-based development with human approval points, validators, persistent job state, and repo-backed configuration.

Weir is a CI gate for AI agents that reads OpenTelemetry traces and fails builds when sensitive data reaches forbidden sinks. It includes a gauge for trace coverage, taint tracking, HTML reports, and rule-based scans for agent workflows.

KHMS is a file-based long-term memory system for LLM agents, built around immutable markdown cards in a git repository with YAML frontmatter, hook-based recall, and a propose → review → approve flow.

Wolfpack is a self-hosted control room for persistent coding-agent sessions across your machines, with Tailscale-based private access and support for tools like Claude Code, Codex CLI, Gemini CLI, and shell sessions.

A hands-on lab toolkit for Docker and container security, covering CIS checks, image hardening, signing, SBOMs, admission control, runtime security, and AI context-poisoning defenses.

Open-source MCP server for live messaging and coordination between coding agents like Claude Code, Codex, Cursor, Gemini CLI, and Grok Build.

Open-source platform for running multiple AI agents alongside teams across chat and dev workflows, with self-hosted deployment and role-based agent coordination.

Open-source local AI coworker system that routes Claude Code and Codex work to local models on your own hardware, with durable task handling, multi-machine cooking, and MCP/CLI support.

Crilio is a Python CLI and CI gate for testing AI prompts and catching regressions before they ship. It versions prompt tests in crilio.yaml, runs model calls, uses a judge model to score responses, and can block pull requests in GitHub Actions when checks fail.

Codecut is a CLI for keeping coding agents on track by turning project rules into automatic checks. It flags issues like missing tests, failing test output, temporary agent comments, long code comments, and large changes that need an explanation, then explains what to fix.

Open-source multiplayer design canvas where humans and AI agents design together in real time, with built-in MCP support and self-hosting options.

LayoutLens is an AI-assisted UI testing tool that combines natural-language visual checks with deterministic WCAG audits using axe-core and Playwright. It supports keyless accessibility scans, hybrid LLM-grounded checks, a Python API, and a CLI for running tests in CI.

Meetless is a control layer for AI coding agents that captures decisions from live coding sessions, flags stale or conflicting instructions, and injects approved context before the agent acts. It’s built for solo developers and teams using Claude Code and Codex.

A front-end skill pack for AI coding agents that routes requests to one of 19 skills and enforces machine-checked output constraints before code ships.