act-cli-0.3.1 is not a library.
act-cli
CLI and reference host for ACT — loads .wasm ACT components and serves them over HTTP or MCP (stdio).
Usage
act serve <component.wasm> [-l [::1]:3000]
act call <component.wasm> <tool-name> [--args '{}'] [-c '{}']
act mcp <component.wasm> [-c '{}'] [--config-file config.json]
act info <component.wasm>
act tools <component.wasm> [-c '{}']
Set RUST_LOG=act_cli=debug for verbose output.
Commands
| Command | Description |
|---|---|
serve |
Start ACT-HTTP server for a component |
call |
Call a tool directly, print result to stdout |
mcp |
Serve component as MCP server over stdio |
info |
Show component name, version, description, capabilities |
tools |
List tools exposed by a component |
HTTP Endpoints (serve)
| Method | Path | Description |
|---|---|---|
GET |
/info |
Component metadata |
GET |
/config-schema |
JSON Schema for config (204 if none) |
GET |
/tools |
List tools |
POST |
/tools/{name} |
Call a tool |
Building
cargo build --release
Architecture
main.rs CLI (clap) → subcommands (serve, call, mcp, info, tools)
runtime.rs wasmtime engine, component instantiation, actor pattern
http.rs axum routes, ACT-HTTP request/response handling
mcp.rs MCP JSON-RPC over stdio
The host uses an actor pattern: a single tokio task owns the wasmtime Store and component instance, receiving requests over an mpsc channel. This ensures single-threaded access to the Wasm component while allowing concurrent HTTP handling.