anyagent

Build using the subscriptions your users already pay for.

One Up-to-date, feature-rich Rust interface to the agents already on a users machine.

Users have Claude Code, Codex, Grok, OpenCode, Kiro, and friends on their machines — each with its own CLI, protocol, and quirks. If you're building an app on top of them, you end up writing and maintaining a driver per agent. anyagent is that layer, once: it finds the agents, speaks each one's protocol (native or ACP), and gives you one typed API — Runtime, Session, and a stream of Events.

Your app keeps its own transcript, UI, and policy. anyagent owns the processes, the wires, and the turn rules — every agent behaves the same way through it.

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Use

[dependencies]
anyagent = "0.0.1"

use anyagent::{EventKind, Runtime, SessionOptions};
use futures::StreamExt;

let runtime = Runtime::new();
let agent = runtime.discover().await.require("claude")?;
let (session, mut events) = runtime.open(&agent, SessionOptions::in_dir(".")).await?;

session.prompt("explain this repo").await?;
while let Some(event) = events.next().await {
    match event?.kind {
        EventKind::TextDelta { text, .. } => print!("{text}"),
        EventKind::TurnEnded { .. } => break,
        _ => {}
    }
}
session.close().await?;

That's the whole core flow. Everything else is the same few objects:

Features

Capability	API
Discover installed agents and check login status	`runtime.discover()`, `runtime.probe(agent)`
Plan quota for the logged-in account	`runtime.plan_usage(agent)`
Send text, images, slash commands	`session.prompt(input)`
Steer or interrupt a running turn	`session.prompt(..)` mid-turn, `session.cancel()`
Answer a permission or question the agent raised	`session.answer(id, answer)`
Switch model / mode / any advertised option live	`session.configure("model", "sonnet")`
Resume, fork, or rewind a conversation	`SessionOptions::resume` / `fork_from`, `session.rollback(..)`
Add custom MCP Servers	`SessionOptions::mcp_server(..)`

Events cover streamed text and reasoning, typed tool calls with diffs, plans, token usage, permission requests, subagents, and turn boundaries — the same EventKinds for every agent. Anything provider-specific rides in extensions instead of leaking into the types.

Supported agents

Agent	Wire
Claude Code	native (stream-json)
Codex	native (app-server)
Antigravity	native
Grok, Hermes Agent, opencode, Kiro CLI, Qwen Code	ACP

Any other ACP agent works without a catalog entry via AgentInstallation::acp(name, path, args).

License

MIT or Apache-2.0.

anyagent 0.0.1