Custom Tools

Build AI agents that actually do things. Synapse is an open-source platform for creating, connecting, and orchestrating AI agents powered by any LLM — local, cloud or CLIs.

Customize Claude Code's system prompts, create custom toolsets, input pattern highlighters, themes/thinking verbs/spinners, customize input box & user message styling, support AGENTS.md, unlock private/unreleased features, and much more. Supports both native/npm installs on all platforms.

SparkWork is a local-first desktop Agent workbench for professional development and complex work. Orchestrate workflows, collaborate across Agent sessions, route tasks to the right models, and extend the workspace with custom tools and apps. Reviewable, steerable, reversible runs on macOS, Windows and Linux.

Batteries-included extension framework for Claude Code CLI providing custom themes, interactive prompts, and multi-tool orchestration.

MCP for Adobe Photoshop. 118 tools. Control from Cursor, Claude or custom LLMs.

Adnify——Lightweight, highly customized AI Agent editor, the ultimate experience that crushes mainstream AI programming tools! The lightweight architecture starts in seconds without lag, supports full-process customization of AI Agent (logic orchestration/tool ​​approval/intelligent interaction), deeply integrates XTerminal (WebGL acceleration + custom shortcut keys), and is equipped with Markdown multi-mode editing, theme customization, and Git integrated management. Say goodbye to bloated templates and make AI development completely fit your habits.

Zero-config entity resolution feeding a durable identity layer: messy records from any source become stable golden entities, a Customer 360 with provenance, merge/split and audit. Fellegi-Sunter beats hand-tuned Splink. Arrow-native/Rust, 250M rows in 11.2 min. Python + edge TypeScript (WASM), SQL-native in Postgres & DuckDB, 97 MCP tools + REST.

Desktop-first, open-source (MIT) application for running parallel agents, and multi-step custom workflows triggered by schedules, webhooks or events from tools like Linear and Sentry, across your already-used providers.

A curated list of awesome LLM and AI Agent Skills, resources and tools for customising AI Agent workflows - that works with Claude Code, Codex, Gemini CLI and your custom AI Agents

Add Obsidian integrations like semantic search and custom Templater prompts to Claude or any MCP client.

Percho: Minimalist desktop GUI for the Pi coding agent — the same engine as the Pi CLI, in a clean visual interface. Multi-session chat, visual tool approvals, and custom themes.

A curated list of awesome Claude Skills, resources, and tools for customizing Claude AI workflows

A curated list of awesome Claude Skills, resources, and tools for customizing Claude AI workflows — particularly Claude Code

MCP Server Framework and Tool Development library for building custom capabilities into agents.

pi-desktop Minimalist desktop GUI for the Pi coding agent — the same engine as the Pi CLI, in a clean visual interface. Multi-session chat, visual tool approvals, and custom themes.

MCP Toolkit for Flutter AI Agent Driven Development (MCP/CLI + custom client side tools) - via closed feedback loop (visual & semantic snapshot) and high client side customization adaptable for any Flutter app. Nowadays it is often called as agentic harness.

Open-source, self-hosted AI customer service platform built around ReAct agents. Agents retrieve knowledge, call tools, and prepare actions; humans confirm high-impact writes such as ticket creation. Apache-2.0, Postgres-only.

A curated monorepo of Pi Coding Agent extensions, custom tool adapters, and execution bridges.