developer-tool

Anthropic’s documentation page on how to prompt Claude Opus 5.5, with guidance for effort calibration, agentic runs, progress updates, multi-app workflows, refusals, pasted text, and visual inputs.

Errand is an open-source macOS app for working with persistent AI teammates that each have their own cloud computer, conversation history, and files. The page shows the product purpose, how it works, download availability, and a visible FAQ explaining setup and runtime requirements.

A macOS menu-bar app that supervises MCP servers so multiple editors and clients can share one running server per profile, with credentials stored in Keychain and tool calls recorded.

A headless Roslyn/MSBuild indexer for C# that gives coding agents compiler-resolved usage, reference, inheritance, and override data across projects.

Ante is a self-contained coding agent for the terminal with local model support, multi-agent orchestration, and programmatic server modes. The docs highlight offline operation, low resource use, public benchmarks, and integrations for providers, MCP, Slack/Discord, and custom engines.

Local-first tool that analyzes Claude Code session logs to explain where usage went, diagnose quota spikes, and generate reports from plain-English questions or slash commands.

A multi-tenant MCP server for structured, semantics-aware code refactorings. It supports real refactorings like rename, extract, inline, and organize-imports, with project registration, diff previews, and support for Java, Rust, and TypeScript/JavaScript.

Quil is a terminal multiplexer for AI-native development that preserves workspaces across reboots and resumes AI sessions. It also exposes an MCP server so agents can inspect panes, read output, and send commands.

Open-source local-first agentic IDE for autonomous software development with governed execution, persistent tasks, evidence-backed memory, and multi-environment runtime support.

CLI tool that black-box tests remote MCP servers for 2026-07-28 spec readiness and reports pass/fail status, grades, and migration guidance.

Predio is a REST and MCP API that turns Spanish cadastre data into structured, versioned JSON for reference lookup, coordinates, and address-based queries. It is aimed at developers, proptech teams, and AI agents.

SEOAgent is an SEO workflow tool for coding agents like Claude Code, Cursor, and Codex. It audits sites locally, suggests evidence-backed updates in the cloud, and syncs approved changes back into the repo.

Open-source control plane for coding agents that turns GitHub issues into bounded runs with validation, review, rework, and human merge gates.

Wattfare is an OAuth-style way for apps to let users connect and fund their own AI usage with a monthly cap. It offers an SDK, OpenAI-compatible model access, and support for Vercel AI SDK workflows.

Open-source, self-hostable sandbox for AI agents. It lets agents work inside isolated Linux containers through MCP tools, with CLI and host-level admin controls for creating, managing, and exposing boxes.

Hyperset is a local-first debugging tool for coding agents that captures runtime evidence from your app and feeds it back into the agent. It supports Node.js, Python, and Go, and can work with its own agent or tools like Claude Code, Codex, and OpenCode.

A live evidence-based lookup and audit service for MCP servers. It checks public health and ownership signals, returns PASS/REVIEW/BLOCK/UNKNOWN, and offers both REST and MCP access for agents.

An MCP server that connects Claude Desktop, Cursor, Codex, and other MCP clients to bounty.index’s live bug bounty index, with 14 tools, 3 prompts, and a stats resource.

Deterministic harness for LLM code edits. The model proposes SEARCH/REPLACE blocks, a local runtime applies them in a shadow worktree, and TypeScript compilation gates the merge.

A Claude Code plugin that shows a live, plain-English status box explaining what Claude is doing at each step, with timing and expandable history.

Open plain-text .dai files for AI memory, with an MCP server and hooks for Claude Code, Claude Desktop, Cursor, Windsurf, and Codex. The repo also includes benchmark evidence, specs, install steps, and reproduction docs.

dif.sh is a developer tool for managing feature flags and A/B tests as Markdown files in your repo, with a CLI for init, validation, build, and conclusion workflows. It also generates context for coding agents and supports conflict checks, segmentation, and experiment tracking.

AgentDrive is a cloud filesystem for AI agents and people to share files across work sessions, with shared drives, version history, and MCP-based setup for tools like Claude Code and Codex.

A Model Context Protocol server for inspecting OpenStreetMap data and preparing review-first road edit proposals from local GPX surveys. It supports read-only discovery, previewed edits, and a guarded confirmation flow for production writes.