Detect, configure, and extend 14 AI coding agents (Claude Code, Codex, Cursor, Copilot, etc.) from your Go tools.

AgentX

Part of the Agent Experience (AX) toolchain by SageOx — a new category of developer tooling that optimizes CLIs for AI coding agents, not just humans.

Build agent-aware CLI tools that know which AI coding assistant is calling them.

AgentX detects whether your tool is running inside Claude Code, Cursor, Aider, or 14 other coding agents - and gives you access to their configuration, context files, capabilities, and extension management.

Why AX?

AI coding agents are the new users of your CLI. Agent Experience (AX) is the practice of designing tools that work well for both humans and agents — not just tolerating agent usage, but actively optimizing for it.

AgentX gives your CLI the primitives it needs:

• Which agent is calling: Tailor output format, verbosity, or behavior per agent
• Where agent config lives: Read/write to ~/.cursor, ~/.cursor, etc.
• What context files exist: Find CLAUDE.md, .cursorrules, and similar files
• How to propagate context: Set AGENT_ENV so downstream tools know too

package main

import (
    "fmt"

    "github.com/sageox/agentx/pkg"
)

func main() {
    // Detect agent and set AGENT_ENV for child processes
    agent := agentx.Init()

    if agent != nil {
        fmt.Printf("Running in %s\n", agent.Name())
        fmt.Printf("Config: %s\n", must(agent.UserConfigPath(agentx.NewSystemEnvironment())))
        fmt.Printf("Context files: %v\n", agent.ContextFiles())
    }
}

Key Features

1. Automatic Agent Detection

Detects 14 coding agents via environment variables and heuristics:

agent := agentx.Detect()
if agent != nil {
    switch agent.Type() {
    case agentx.AgentTypeClaudeCode:
        // Claude Code specific behavior
    case agentx.AgentTypeCursor:
        // Cursor specific behavior
    }
}

2. AGENT_ENV Propagation

Init() detects the agent and sets AGENT_ENV in the process environment. This lets downstream code and chi