Zypher Agent

Production-ready AI agents that live in your applications

Features

• Agent, Not Workflow: Reactive loop where the agent dynamically decides next steps based on LLM reasoning.
• Git-Based Checkpoints: Track, review, and revert agent changes with built-in checkpoint management
• Extensible Tool System: Built-in tools for file operations, search, and terminal commands with support for custom tools
• Model Context Protocol (MCP): Native support for MCP servers with OAuth authentication
• Multi-Provider Support: Works with Anthropic Claude and OpenAI GPT models through a unified interface
• Loop Interceptor System: Customize agent behavior with extensible post-inference interceptors
• Production-Ready: Configurable timeouts, concurrency protection, and comprehensive error handling

Quick Start

Installation

[!NOTE] Support for npm coming soon.

Using JSR

deno add jsr:@corespeed/zypher

SDK Usage

import { AnthropicModelProvider, createZypherAgent } from "@corespeed/zypher";
import { createFileSystemTools } from "@corespeed/zypher/tools";
import { eachValueFrom } from "rxjs-for-await";

const agent = await createZypherAgent({
  modelProvider: new AnthropicModelProvider({
    apiKey: Deno.env.get("ANTHROPIC_API_KEY")!,
  }),
  tools: [...createFileSystemTools()],
  mcpServers: ["@modelcontextprotocol/sequentialthinking-server"],
});

// Run task with streaming
const taskEvents = agent.runTask(
  "Implement authentication middleware",
  "claude-sonnet-4-20250514",
);

for await (const event of eachValueFrom(taskEvents)) {
  console.log(event);
}

See our documentation for full usage examples and API reference.

License

Licensed under the Apache License, Version 2.0. See LICENSE.md for details.

Resources

• Documentation and API Reference
• Issue Tracker
• Model Context Protocol

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