Official tools for building with the Claude API: the ant CLI, client SDKs in seven languages, and framework-specific libraries.
New capabilities for building agents on the Anthropic API | Claude
Claude now offers code execution, MCP server connections, file storage, and extended prompt caching through the API—giving developers powerful tools to build agents that analyze data, connect to external systems, and maintain context for longer periods of time.
Dive into Claude Code: The Design Space of Today's and Future AI Agent Systems
Claude Code is an agentic coding tool that can run shell commands, edit files, and call external services on behalf of the user. This study describes its comprehensive architecture by analyzing the publicly available TypeScript source code and further comparing it with OpenClaw, an independent open-source AI agent system that answers many of the same design questions from a different deployment context. Our analysis identifies five human values, philosophies, and needs that motivate the architecture (human decision authority, safety and security, reliable execution, capability amplification, and contextual adaptability) and traces them through thirteen design principles to specific implementation choices. The core of the system is a simple while-loop that calls the model, runs tools, and repeats. Most of the code, however, lives in the systems around this loop: a permission system with seven modes and an ML-based classifier, a five-layer compaction pipeline for context management, four extensibility mechanisms (MCP, plugins, skills, and hooks), a subagent delegation mechanism with worktree isolation, and append-oriented session storage. A comparison with OpenClaw, a multi-channel personal assistant gateway, shows that the same recurring design questions produce different architectural answers when the deployment context changes: from per-action safety classification to perimeter-level access control, from a single CLI loop to an embedded runtime within a gateway control plane, and from context-window extensions to gateway-wide capability registration. We finally identify six open design directions for future agent systems, grounded in recent empirical, architectural, and policy literature.
Tool use with Claude
Connect Claude to external tools and APIs. Learn where tools execute and how the agentic loop works.
Claude Platform
Updates to the Claude Platform, including the Claude API, client SDKs, and the Claude Console.
goose | Your open source AI agent
Your native open source AI agent. Desktop app, CLI, and API — for code, workflows, and everything in between.
Gemini CLI: your open-source AI agent
Free and open source, Gemini CLI brings Gemini directly into developers’ terminals — with unmatched access for individuals.
Supported agents – Every coding agent Paseo runs
Run Claude Code, Codex, Copilot, OpenCode, Cursor CLI, Gemini CLI, and dozens more coding agents from your phone. Self-hosted, your code stays on your machine.
Introducing advanced tool use on the Claude Developer Platform
Claude can now discover, learn, and execute tools dynamically to enable agents that take action in the real world. Here’s how.
Generate SDKs for Your API with liblab
Discover liblab, the ultimate SDK generator for creating robust SDKs. Leverage our innovative SDK software and comprehensive documentation to enhance your development process.
Cline - AI Coding, Open Source and Uncompromised
Open-source AI coding agent with Plan/Act modes, MCP integration, and terminal-first workflows. Trusted by 5M+ developers worldwide.
third-party apis: community infrastructure on atproto - Keith's Thoughts
you can just build things from an open set of tools
chore: bump Claude Code to 2.1.128 and Agent SDK to 0.2.128 · anthropics/claude-code-action@2cc1ac1
Contribute to anthropics/claude-code-action development by creating an account on GitHub.
Anthropic extends MCP with a UI framework
Anthropic is turning Claude into an app platform, with interactive widgets from Slack, Figma, Asana, and others.
Anthropic has acquired the dev tools startup used by OpenAI, Google, and Cloudflare | TechCrunch
Stainless, a New York-based startup, founded in 2022, rose to prominence in the emerging AI industry for automating the creation and maintenance of software development kits, or SDKs — the libraries developers use to interact with APIs.
