mirror of
https://github.com/storytold/effectcraft.git
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M14.1: MCP server + agent CLI
- crates/automation (L5, no egui): hand-rolled JSON-RPC 2.0 MCP server over stdio (initialize, ping, tools/list, tools/call); headless backend (in-process Session) and bridge backend (desktop control channel). Tools: list_commands, execute_command, get_project/comp/layer, get/set_property, add_keyframe, render_frame (inline PNG), open/save_project, undo/redo; bridge-only screenshot, ui_* and raw control passthrough. - effectcraft-cli: info, commands, exec, run, props, get, set, render-frame, mcp [--bridge PORT]; --json, --project/--demo/--empty, --save/--save-as. - engine: prop.get, layer.tree node paths + time, Session::resolve_comp, render_rgba8, execute_checked (rejects unknown params, lists accepted keys). - control channel: render.frame; engine.execute runs every engine command directly (no dialogs, validated params). - docs: control-protocol.md, agents.md. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Brandon Thomas
co-authored by
Claude Opus 5.5
Claude Opus 5.5
parent
dee16181fe
commit
c672e03160
@@ -1,89 +1,391 @@
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//! EffectCraft headless CLI.
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//! EffectCraft headless CLI: one-shot agent commands, frame rendering and the MCP server.
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//!
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//! ```text
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//! effectcraft-cli frame [project.ecproj | --demo] [--comp NAME] [--time S | --frame N] [--scale K] --out out.png
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//! effectcraft-cli run [project.ecproj | --demo] '<command-id>' '<json params>' … (prints results)
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//! effectcraft-cli commands (lists commands)
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//! effectcraft-cli info project + engine summary
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//! effectcraft-cli commands [--filter TEXT] [--enabled] list engine commands
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//! effectcraft-cli exec <command-id> [--params JSON] run one command
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//! effectcraft-cli run <id> <json> [<id> <json> …] run several commands in order
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//! effectcraft-cli props <comp> <layer> [--flat] [--time S] a layer's property tree (with paths)
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//! effectcraft-cli get <comp> <layer> <path> [--time S] read a property
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//! effectcraft-cli set <comp> <layer> <path> <value> [--time S] [--expression E]
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//! effectcraft-cli render-frame [--comp C] [--time S|--frame N] [--max-side PX|--scale K] [--out F.png]
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//! effectcraft-cli mcp [--bridge PORT] MCP server on stdio
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//!
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//! Project: --project F.ecproj (or a positional *.ecproj) | --demo | --empty (default: demo; mcp: empty)
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//! Saving: --save (back to --project) | --save-as F.ecproj
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//! Bridge: --bridge PORT drives a running `effectcraft --control PORT` instead of a headless session
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//! Output: --json for one compact JSON document on stdout (errors: {"error": …}, exit 1)
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//! ```
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//!
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//! `<comp>` is a comp id or name (`-` = the active comp); `<layer>` an id, `#n` or name; `<value>`
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//! is JSON (`50`, `[960,540]`, `"#ff0000"`) or a bare string. See `docs/agents.md`.
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use effectcraft_engine::Session;
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use effectcraft_render::RenderOpts;
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use effectcraft_time::Tick;
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use effectcraft_automation::tools::{self, Reply};
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use effectcraft_automation::{Backend, McpServer};
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use serde_json::{Value, json};
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fn usage() -> ! {
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eprintln!("usage: effectcraft-cli <frame|run|commands> [args] (see --help in source docs)");
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std::process::exit(2)
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const USAGE: &str = "usage: effectcraft-cli <info|commands|exec|run|props|get|set|render-frame|mcp> [args] [--json]
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info project + engine summary
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commands [--filter TEXT] [--enabled] list engine commands
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exec <command-id> [--params JSON] run one engine command
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run <id> <json> [<id> <json> ...] run several commands in order
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props <comp> <layer> [--flat] [--time S] a layer's property tree with paths
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get <comp> <layer> <path> [--time S] read a property
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set <comp> <layer> <path> <value> [--time S] [--expression E]
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render-frame [--comp C] [--time S | --frame N] [--max-side PX | --scale K] [--out F.png]
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mcp [--bridge PORT] MCP server (JSON-RPC over stdio)
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options: --project F.ecproj | --demo | --empty --save | --save-as F --bridge PORT --json
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<comp>: id or name, '-' = active comp; <layer>: id, '#n' or name; <value>: JSON or bare string";
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/// Options that take a value.
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const VALUED: &[&str] =
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&["--params", "--project", "--bridge", "--save-as", "--filter", "--time", "--frame", "--comp", "--max-side", "--scale", "--out", "--expression", "--depth"];
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struct Args {
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pos: Vec<String>,
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opts: Vec<(String, Option<String>)>,
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/// `--project F` or a positional `*.ecproj`.
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project: Option<String>,
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}
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fn open(s: &mut Session, args: &[String]) {
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if let Some(p) = args.iter().find(|a| a.ends_with(".ecproj")) {
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if let Err(e) = s.execute("file.open", json!({"path": p})) {
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eprintln!("effectcraft: {e}");
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std::process::exit(1);
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impl Args {
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fn parse(raw: Vec<String>) -> Result<Args, String> {
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let (mut pos, mut opts) = (vec![], vec![]);
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let mut it = raw.into_iter();
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while let Some(a) = it.next() {
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if a.starts_with("--") && a.len() > 2 {
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let (k, inline) = match a.split_once('=') {
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Some((k, v)) => (k.to_string(), Some(v.to_string())),
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None => (a, None),
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};
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if VALUED.contains(&k.as_str()) {
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let v = inline.or_else(|| it.next()).ok_or_else(|| format!("{k} needs a value"))?;
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opts.push((k, Some(v)));
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} else {
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opts.push((k, None));
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}
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} else {
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pos.push(a);
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}
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}
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} else if args.iter().any(|a| a == "--demo") || true {
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let _ = s.execute("file.openDemoProject", json!({}));
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let mut a = Args { pos, opts, project: None };
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a.project = match a.opt("--project") {
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Some(p) => Some(p.to_string()),
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None => a.pos.iter().position(|x| x.ends_with(".ecproj")).map(|i| a.pos.remove(i)),
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};
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Ok(a)
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}
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fn flag(&self, k: &str) -> bool {
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self.opts.iter().any(|(o, _)| o == k)
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}
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fn opt(&self, k: &str) -> Option<&str> {
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self.opts.iter().rev().find(|(o, _)| o == k).and_then(|(_, v)| v.as_deref())
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}
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fn num(&self, k: &str) -> Result<Option<f64>, String> {
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self.opt(k).map(|v| v.parse::<f64>().map_err(|_| format!("{k}: not a number: {v}"))).transpose()
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}
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}
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fn opt<'a>(args: &'a [String], k: &str) -> Option<&'a str> {
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args.iter().position(|a| a == k).and_then(|i| args.get(i + 1)).map(String::as_str)
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/// A comp/layer reference: number → id, `-` → none (active), else a name / `#n`.
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fn reference(s: &str) -> Option<Value> {
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match s {
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"-" | "" => None,
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_ => Some(s.parse::<u64>().map(Value::from).unwrap_or_else(|_| json!(s))),
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}
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}
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/// JSON if it parses, else the bare string.
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fn value_arg(s: &str) -> Value {
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serde_json::from_str(s).unwrap_or_else(|_| json!(s))
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}
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fn main() {
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let args: Vec<String> = std::env::args().skip(1).collect();
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let Some(cmd) = args.first().cloned() else { usage() };
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let rest = &args[1..];
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let mut s = Session::default();
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match cmd.as_str() {
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"frame" => {
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open(&mut s, rest);
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if let Some(c) = opt(rest, "--comp") {
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let _ = s.execute("comp.open", json!({"comp": c}));
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let raw: Vec<String> = std::env::args().skip(1).collect();
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if raw.is_empty() || raw.iter().any(|a| a == "-h" || a == "--help") {
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println!("{USAGE}");
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std::process::exit(if raw.is_empty() { 2 } else { 0 });
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}
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let mut args = match Args::parse(raw) {
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Ok(a) => a,
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Err(e) => fail_usage(&e),
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};
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let json_out = args.flag("--json");
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if args.pos.is_empty() {
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fail_usage("missing subcommand");
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}
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let cmd = args.pos.remove(0);
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match run(&cmd, &args, json_out) {
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Ok(()) => {}
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Err(Failure::Usage(e)) => fail_usage(&e),
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Err(Failure::Error(e)) => {
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if json_out {
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println!("{}", json!({"error": e}));
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}
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let cid = s.active_comp_id().unwrap_or_else(|| {
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eprintln!("no composition");
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std::process::exit(1)
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});
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let comp = s.project.comp(cid).cloned().unwrap_or_else(|| std::process::exit(1));
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let t = if let Some(f) = opt(rest, "--frame").and_then(|f| f.parse().ok()) {
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comp.frame_rate.tick_of(f)
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} else {
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opt(rest, "--time").and_then(|v| v.parse().ok()).map(Tick::from_seconds_f64).unwrap_or(s.time())
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};
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let scale = opt(rest, "--scale").and_then(|v| v.parse().ok()).unwrap_or(1.0);
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let out = opt(rest, "--out").unwrap_or("frame.png");
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let t0 = std::time::Instant::now();
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let img = s.render(cid, t, RenderOpts { scale, ..Default::default() });
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let el = t0.elapsed();
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let bg = comp.background;
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let rgba = img.to_rgba8_over(bg);
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image::save_buffer(out, &rgba, img.width, img.height, image::ColorType::Rgba8).unwrap_or_else(|e| {
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eprintln!("cannot write {out}: {e}");
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std::process::exit(1)
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});
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eprintln!("rendered {}x{} at {:.3}s in {:.1} ms → {out}", img.width, img.height, t.seconds(), el.as_secs_f64() * 1000.0);
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eprintln!("effectcraft-cli {cmd}: {e}");
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std::process::exit(1);
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}
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"run" => {
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open(&mut s, rest);
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let pairs: Vec<&String> = rest.iter().filter(|a| !a.ends_with(".ecproj") && *a != "--demo").collect();
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for ch in pairs.chunks(2) {
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let params: Value = ch.get(1).and_then(|p| serde_json::from_str(p).ok()).unwrap_or(json!({}));
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match s.execute(ch[0], params) {
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Ok(v) => println!("{}", serde_json::to_string_pretty(&v).unwrap_or_default()),
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Err(e) => {
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eprintln!("{}: {e}", ch[0]);
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std::process::exit(1)
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}
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}
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fn fail_usage(e: &str) -> ! {
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eprintln!("effectcraft-cli: {e}\n{USAGE}");
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std::process::exit(2)
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}
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enum Failure {
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Usage(String),
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Error(String),
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}
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impl From<effectcraft_automation::Error> for Failure {
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fn from(e: effectcraft_automation::Error) -> Self {
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Failure::Error(e.to_string())
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}
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}
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impl From<String> for Failure {
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fn from(e: String) -> Self {
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Failure::Error(e)
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}
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}
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fn usage_err<T>(m: &str) -> Result<T, Failure> {
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Err(Failure::Usage(m.to_string()))
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}
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/// Build the backend: a bridge to the app, or a headless session with the requested project.
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fn backend(args: &Args, default_demo: bool) -> Result<Backend, Failure> {
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if let Some(addr) = args.opt("--bridge") {
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if args.project.is_some() || args.flag("--demo") {
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return usage_err("--bridge drives the running app's project; use `exec file.open` to open another");
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}
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return Ok(Backend::bridge(addr)?);
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}
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let mut b = Backend::headless(effectcraft_host::session());
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if let Some(p) = &args.project {
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b.exec("file.open", json!({"path": p}))?;
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} else if args.flag("--demo") || (default_demo && !args.flag("--empty")) {
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b.exec("file.openDemoProject", json!({}))?;
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}
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Ok(b)
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}
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/// `--save` / `--save-as` after a mutating command.
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fn maybe_save(b: &mut Backend, args: &Args) -> Result<Option<String>, Failure> {
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let r = if let Some(p) = args.opt("--save-as") {
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b.exec("file.saveAs", json!({"path": p}))?
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} else if args.flag("--save") {
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b.exec("file.save", json!({})).map_err(|e| Failure::Error(format!("{e} (use --project F to save in place, or --save-as F)")))?
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} else {
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return Ok(None);
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};
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Ok(r.get("path").and_then(Value::as_str).map(str::to_string).or_else(|| args.opt("--save-as").map(str::to_string)))
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}
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fn tool(b: &mut Backend, name: &str, a: Value) -> Result<Value, Failure> {
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match tools::run(b, name, &a)? {
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Reply::Json(v) => Ok(v),
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Reply::Image { info, .. } => Ok(info),
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}
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}
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/// Print a result: compact JSON with `--json`, else pretty JSON.
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fn emit(v: &Value, json_out: bool) {
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if json_out {
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println!("{v}");
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} else {
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println!("{}", serde_json::to_string_pretty(v).unwrap_or_default());
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}
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}
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fn run(cmd: &str, args: &Args, json_out: bool) -> Result<(), Failure> {
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match cmd {
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"info" => {
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let mut b = backend(args, true)?;
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let p = tool(&mut b, "get_project", json!({}))?;
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let comp = tool(&mut b, "get_comp", json!({})).ok();
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let info = json!({
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"version": env!("CARGO_PKG_VERSION"),
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"mode": if b.is_bridge() { "bridge" } else { "headless" },
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"commands": effectcraft_engine::command_specs().len(),
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"effects": effectcraft_engine::effects::registry().len(),
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"project": p,
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"activeComp": comp,
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});
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if json_out {
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emit(&info, true);
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} else {
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println!(
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"EffectCraft {} ({}), {} commands, {} effects",
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info["version"].as_str().unwrap_or(""),
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info["mode"].as_str().unwrap_or(""),
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info["commands"],
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info["effects"]
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);
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println!("project: {}", p["path"].as_str().unwrap_or("(unsaved)"));
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for i in p["items"].as_array().into_iter().flatten() {
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println!(" item {:>3} {:<12} {}", i["id"], i["type"].as_str().unwrap_or(""), i["name"].as_str().unwrap_or(""));
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}
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if let Some(c) = comp {
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println!(
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"active comp {} \"{}\" {}x{} @ {} fps, {} s",
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c["id"],
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c["name"].as_str().unwrap_or(""),
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c["width"],
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c["height"],
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c["frameRate"],
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c["duration"]
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);
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for l in c["layers"].as_array().into_iter().flatten() {
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println!(" #{:<3} id {:<4} {:<10} {}", l["index"], l["id"], l["type"].as_str().unwrap_or(""), l["name"].as_str().unwrap_or(""));
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}
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}
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}
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}
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"commands" => {
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for c in effectcraft_engine::command_specs() {
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println!("{:<36} {:<40} {}", c.id, c.label, c.shortcut.unwrap_or(""));
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let mut b = backend(args, false)?;
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let v = tool(&mut b, "list_commands", json!({"filter": args.opt("--filter"), "enabled_only": args.flag("--enabled")}))?;
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if json_out {
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emit(&v, true);
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} else {
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for c in v.as_array().into_iter().flatten() {
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println!(
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"{:<36} {:<36} {:<16} {}",
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c["id"].as_str().unwrap_or(""),
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c["label"].as_str().unwrap_or(""),
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c["shortcut"].as_str().unwrap_or(""),
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c["params"].as_str().unwrap_or("")
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);
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}
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}
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}
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_ => usage(),
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"exec" => {
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let Some(id) = args.pos.first().cloned() else { return usage_err("exec needs a command id") };
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let params = match (args.opt("--params"), args.pos.get(1).map(String::as_str)) {
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(Some(p), _) | (None, Some(p)) => serde_json::from_str(p).map_err(|e| Failure::Usage(format!("params are not valid JSON: {e}")))?,
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(None, None) => json!({}),
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};
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let mut b = backend(args, true)?;
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let r = b.exec(&id, params)?;
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let saved = maybe_save(&mut b, args)?;
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emit(&with_saved(r, saved), json_out);
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}
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"run" => {
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if args.pos.is_empty() {
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return usage_err("run needs <command-id> [<json>] pairs");
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}
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let pairs = args.pos.clone();
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let mut b = backend(args, true)?;
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let mut results = vec![];
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let mut i = 0;
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while i < pairs.len() {
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let id = &pairs[i];
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let params = match pairs.get(i + 1).filter(|p| p.trim_start().starts_with('{')) {
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Some(p) => {
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i += 1;
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serde_json::from_str(p).map_err(|e| Failure::Usage(format!("{id}: params are not valid JSON: {e}")))?
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}
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None => json!({}),
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};
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i += 1;
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let r = b.exec(id, params).map_err(|e| Failure::Error(format!("{id}: {e}")))?;
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if !json_out {
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emit(&r, false);
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}
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results.push(json!({"command": id, "result": r}));
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}
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let saved = maybe_save(&mut b, args)?;
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if json_out {
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emit(&with_saved(json!(results), saved), true);
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}
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}
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"props" => {
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let [comp, layer] = positional::<2>(args, "props <comp> <layer>")?;
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let mut b = backend(args, true)?;
|
||||
let a = json!({"comp": reference(&comp), "layer": reference(&layer), "flat": args.flag("--flat") || !json_out, "time": args.num("--time")?, "depth": args.num("--depth")?});
|
||||
let v = tool(&mut b, "get_layer", a)?;
|
||||
if json_out {
|
||||
emit(&v, true);
|
||||
} else {
|
||||
println!("layer {} \"{}\" ({}) at {} s", v["id"], v["name"].as_str().unwrap_or(""), v["type"].as_str().unwrap_or(""), v["time"]);
|
||||
for p in v["properties"].as_array().into_iter().flatten() {
|
||||
let mut extra = String::new();
|
||||
if let Some(k) = p.get("keys") {
|
||||
extra += &format!(" [{k} keys]");
|
||||
}
|
||||
if let Some(e) = p.get("expression").and_then(Value::as_str) {
|
||||
extra += &format!(" expr: {e}");
|
||||
}
|
||||
println!(" {:<44} {:<8} {}{extra}", p["path"].as_str().unwrap_or(""), p["type"].as_str().unwrap_or(""), p["value"]);
|
||||
}
|
||||
}
|
||||
}
|
||||
"get" => {
|
||||
let [comp, layer, path] = positional::<3>(args, "get <comp> <layer> <path>")?;
|
||||
let mut b = backend(args, true)?;
|
||||
let v = tool(&mut b, "get_property", json!({"comp": reference(&comp), "layer": reference(&layer), "path": path, "time": args.num("--time")?}))?;
|
||||
emit(&v, json_out);
|
||||
}
|
||||
"set" => {
|
||||
let expr = args.opt("--expression").map(str::to_string);
|
||||
let need = if expr.is_some() { 3 } else { 4 };
|
||||
if args.pos.len() < need {
|
||||
return usage_err("set <comp> <layer> <path> <value> [--time S] [--expression E]");
|
||||
}
|
||||
let (comp, layer, path) = (args.pos[0].clone(), args.pos[1].clone(), args.pos[2].clone());
|
||||
let value = args.pos.get(3).map(|v| value_arg(v));
|
||||
let mut b = backend(args, true)?;
|
||||
let a =
|
||||
json!({"comp": reference(&comp), "layer": reference(&layer), "path": path, "value": value, "time": args.num("--time")?, "expression": expr});
|
||||
let v = tool(&mut b, "set_property", a)?;
|
||||
let saved = maybe_save(&mut b, args)?;
|
||||
emit(&with_saved(v, saved), json_out);
|
||||
}
|
||||
"render-frame" | "frame" => {
|
||||
let mut b = backend(args, true)?;
|
||||
let comp = args.opt("--comp").and_then(reference);
|
||||
let mut time = args.num("--time")?;
|
||||
let mut max_side = args.num("--max-side")?.map(|m| m as u32).unwrap_or(0);
|
||||
let needs_info = args.opt("--frame").is_some() || args.opt("--scale").is_some();
|
||||
if needs_info {
|
||||
let c = tool(&mut b, "get_comp", json!({"comp": comp}))?;
|
||||
if let Some(f) = args.num("--frame")? {
|
||||
time = Some(f / c["frameRate"].as_f64().unwrap_or(30.0));
|
||||
}
|
||||
if let Some(k) = args.num("--scale")? {
|
||||
let long = c["width"].as_f64().unwrap_or(0.0).max(c["height"].as_f64().unwrap_or(0.0));
|
||||
max_side = (long * k).round().max(1.0) as u32;
|
||||
}
|
||||
}
|
||||
let out = args.opt("--out").unwrap_or("frame.png").to_string();
|
||||
let t0 = std::time::Instant::now();
|
||||
let f = b.render(comp.as_ref(), time, max_side)?;
|
||||
let ms = t0.elapsed().as_secs_f64() * 1000.0;
|
||||
std::fs::write(&out, &f.png).map_err(|e| format!("cannot write {out}: {e}"))?;
|
||||
let info = json!({"path": out, "comp": f.comp, "time": f.time, "width": f.width, "height": f.height, "ms": (ms * 10.0).round() / 10.0});
|
||||
if json_out {
|
||||
emit(&info, true);
|
||||
} else {
|
||||
eprintln!("rendered {}x{} at {:.3}s in {ms:.1} ms -> {out}", f.width, f.height, f.time);
|
||||
}
|
||||
}
|
||||
"mcp" => {
|
||||
let b = backend(args, false)?;
|
||||
McpServer::new(b).serve_stdio().map_err(|e| e.to_string())?;
|
||||
}
|
||||
other => return usage_err(&format!("unknown subcommand `{other}`")),
|
||||
}
|
||||
Ok(())
|
||||
}
|
||||
|
||||
fn positional<const N: usize>(args: &Args, usage: &str) -> Result<[String; N], Failure> {
|
||||
if args.pos.len() < N {
|
||||
return usage_err(usage);
|
||||
}
|
||||
Ok(std::array::from_fn(|i| args.pos[i].clone()))
|
||||
}
|
||||
|
||||
fn with_saved(v: Value, saved: Option<String>) -> Value {
|
||||
match saved {
|
||||
None => v,
|
||||
Some(p) => json!({"result": v, "saved": p}),
|
||||
}
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user