Add ullm CLI for unified-llm library

New crate `unified-llm-cli` with binary `ullm` providing:
- `prompt` command: generate text via streaming/non-streaming, with
  system prompts, options (-o temperature=0.5), stdin piping, and
  token usage display
- `models list` command: browse catalog models with --provider and
  --query filters
- Auto-detects provider from catalog for correct API routing

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
Bryan Helmkamp 2026-02-20 12:48:19 -04:00
parent 978a477d1e
commit fa542605d7
4 changed files with 745 additions and 0 deletions

295
Cargo.lock generated
View file

@ -2,12 +2,86 @@
# It is not intended for manual editing.
version = 4
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dependencies = [
"memchr",
]
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dependencies = [
"anstyle",
"anstyle-parse",
"anstyle-query",
"anstyle-wincon",
"colorchoice",
"is_terminal_polyfill",
"utf8parse",
]
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dependencies = [
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"windows-sys 0.61.2",
]
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dependencies = [
"anstyle",
"bstr",
"libc",
"predicates",
"predicates-core",
"predicates-tree",
"wait-timeout",
]
[[package]]
name = "async-trait"
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@ -25,6 +99,12 @@ version = "1.1.2"
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@ -37,6 +117,17 @@ version = "2.11.0"
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"serde",
]
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@ -65,6 +156,66 @@ version = "1.0.4"
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]
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"quote",
"syn",
]
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dependencies = [
"async-trait",
"futures",
"serde",
"serde_json",
"thiserror",
"tokio",
"unified-llm",
"uuid",
]
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]
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"serde",
]
[[package]]
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"regex",
]
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]
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@ -1199,6 +1457,12 @@ dependencies = [
"windows-sys 0.61.2",
]
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[[package]]
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@ -1405,6 +1669,22 @@ dependencies = [
"uuid",
]
[[package]]
name = "unified-llm-cli"
version = "0.1.0"
dependencies = [
"anyhow",
"assert_cmd",
"clap",
"dotenvy",
"futures",
"predicates",
"serde_json",
"tokio",
"tokio-stream",
"unified-llm",
]
[[package]]
name = "untrusted"
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dependencies = [
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]
[[package]]
name = "want"
version = "0.3.1"

View file

@ -30,3 +30,4 @@ async-trait = "0.1"
base64 = "0.22"
bytes = "1"
tokio-util = "0.7"
clap = { version = "4", features = ["derive"] }

View file

@ -0,0 +1,27 @@
[package]
name = "unified-llm-cli"
description = "CLI for the unified-llm library"
edition.workspace = true
version.workspace = true
license.workspace = true
[lints]
workspace = true
[[bin]]
name = "ullm"
path = "src/main.rs"
[dependencies]
unified-llm = { path = "../unified-llm" }
clap = { workspace = true }
tokio = { workspace = true }
tokio-stream = { workspace = true }
anyhow = { workspace = true }
dotenvy = { workspace = true }
futures = { workspace = true }
serde_json = { workspace = true }
[dev-dependencies]
assert_cmd = "2"
predicates = "3"

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@ -0,0 +1,422 @@
use std::io::{self, IsTerminal, Read};
use anyhow::{bail, Context, Result};
use clap::{Parser, Subcommand};
use futures::StreamExt;
use unified_llm::catalog;
use unified_llm::generate::{self, GenerateParams};
#[derive(Parser)]
#[command(name = "ullm")]
struct Cli {
#[command(subcommand)]
command: Command,
}
#[derive(Subcommand)]
enum Command {
/// Execute a prompt
Prompt {
/// The prompt text (also accepts stdin)
prompt: Option<String>,
/// Model to use
#[arg(short, long)]
model: Option<String>,
/// System prompt
#[arg(short, long)]
system: Option<String>,
/// Do not stream output
#[arg(long)]
no_stream: bool,
/// Show token usage
#[arg(short, long)]
usage: bool,
/// key=value options (temperature, `max_tokens`, `top_p`)
#[arg(short, long, value_parser = parse_option)]
option: Vec<(String, String)>,
},
/// Manage models
Models {
#[command(subcommand)]
command: Option<ModelsCommand>,
},
}
#[derive(Subcommand)]
enum ModelsCommand {
/// List available models
List {
/// Filter by provider
#[arg(short, long)]
provider: Option<String>,
/// Search for models matching this string
#[arg(short, long)]
query: Option<String>,
},
}
fn parse_option(s: &str) -> Result<(String, String), String> {
let (key, value) = s
.split_once('=')
.ok_or_else(|| format!("expected key=value, got {s}"))?;
Ok((key.to_string(), value.to_string()))
}
fn print_models_table(models: &[unified_llm::types::ModelInfo]) {
println!(
"{:<30} {:<12} {:<30} {:>14}",
"ID", "PROVIDER", "ALIASES", "CONTEXT"
);
for model in models {
let aliases = model.aliases.join(", ");
println!(
"{:<30} {:<12} {:<30} {:>14}",
model.id, model.provider, aliases, model.context_window
);
}
}
fn read_stdin_prompt() -> Option<String> {
let stdin = io::stdin();
if stdin.is_terminal() {
return None;
}
let mut buf = String::new();
stdin.lock().read_to_string(&mut buf).ok()?;
let trimmed = buf.trim().to_string();
if trimmed.is_empty() {
None
} else {
Some(trimmed)
}
}
fn resolve_prompt(arg: Option<String>, stdin: Option<String>) -> Result<String> {
match (stdin, arg) {
(Some(s), Some(a)) => Ok(format!("{s}\n{a}")),
(Some(s), None) => Ok(s),
(None, Some(a)) => Ok(a),
(None, None) => bail!("Error: no prompt provided. Pass a prompt as an argument or pipe text via stdin."),
}
}
/// Returns (model_id, provider) from the catalog, falling back to the first catalog model.
fn resolve_model(model_arg: Option<String>) -> (String, Option<String>) {
let model_id = model_arg.unwrap_or_else(|| {
catalog::list_models(None)
.first()
.map_or_else(|| "claude-sonnet-4-5".to_string(), |m| m.id.clone())
});
let provider = catalog::get_model_info(&model_id).map(|info| info.provider);
(model_id, provider)
}
fn apply_options(
mut params: GenerateParams,
options: &[(String, String)],
) -> Result<GenerateParams> {
let mut provider_opts = serde_json::Map::new();
for (key, value) in options {
match key.as_str() {
"temperature" => {
let v: f64 = value
.parse()
.with_context(|| format!("invalid temperature value: {value}"))?;
params = params.temperature(v);
}
"max_tokens" => {
let v: i64 = value
.parse()
.with_context(|| format!("invalid max_tokens value: {value}"))?;
params = params.max_tokens(v);
}
"top_p" => {
let v: f64 = value
.parse()
.with_context(|| format!("invalid top_p value: {value}"))?;
params = params.top_p(v);
}
_ => {
provider_opts.insert(key.clone(), serde_json::Value::String(value.clone()));
}
}
}
if !provider_opts.is_empty() {
params = params.provider_options(serde_json::Value::Object(provider_opts));
}
Ok(params)
}
async fn run_prompt(
prompt_arg: Option<String>,
model: Option<String>,
system: Option<String>,
no_stream: bool,
show_usage: bool,
options: Vec<(String, String)>,
) -> Result<()> {
let stdin_prompt = read_stdin_prompt();
let prompt_text = resolve_prompt(prompt_arg, stdin_prompt)?;
let (model_id, provider) = resolve_model(model);
let mut params = GenerateParams::new(&model_id).prompt(&prompt_text);
if let Some(p) = provider {
params = params.provider(&p);
}
if let Some(sys) = system {
params = params.system(&sys);
}
params = apply_options(params, &options)?;
if no_stream {
let result = generate::generate(params).await?;
print!("{}", result.text());
if show_usage {
let usage = result.usage();
eprintln!(
"Tokens: {} input, {} output, {} total",
usage.input_tokens, usage.output_tokens, usage.total_tokens
);
}
} else {
let mut stream_result = generate::stream(params).await?;
while let Some(event) = stream_result.next().await {
if let unified_llm::types::StreamEvent::TextDelta { delta, .. } = event? {
print!("{delta}");
}
}
println!();
if show_usage {
if let Some(response) = stream_result.response() {
let usage = &response.usage;
eprintln!(
"Tokens: {} input, {} output, {} total",
usage.input_tokens, usage.output_tokens, usage.total_tokens
);
}
}
}
Ok(())
}
fn main() -> Result<()> {
dotenvy::dotenv().ok();
let cli = Cli::parse();
match cli.command {
Command::Prompt {
prompt,
model,
system,
no_stream,
usage,
option,
} => {
let rt = tokio::runtime::Runtime::new()?;
rt.block_on(run_prompt(prompt, model, system, no_stream, usage, option))?;
}
Command::Models { command } => {
let command = command.unwrap_or(ModelsCommand::List {
provider: None,
query: None,
});
match command {
ModelsCommand::List { provider, query } => {
let mut models = catalog::list_models(provider.as_deref());
if let Some(ref q) = query {
let q_lower = q.to_lowercase();
models.retain(|m| {
m.id.to_lowercase().contains(&q_lower)
|| m.display_name.to_lowercase().contains(&q_lower)
|| m.aliases
.iter()
.any(|a| a.to_lowercase().contains(&q_lower))
});
}
print_models_table(&models);
}
}
}
}
Ok(())
}
#[cfg(test)]
mod tests {
use assert_cmd::Command;
use predicates::prelude::*;
#[allow(deprecated)] // cargo_bin_cmd! macro has known issues
fn ullm() -> Command {
Command::cargo_bin("ullm").unwrap()
}
// Step 1: models list prints all catalog models
#[test]
fn models_list_prints_all_models() {
ullm()
.args(["models", "list"])
.assert()
.success()
.stdout(predicate::str::contains("claude-opus-4-6"))
.stdout(predicate::str::contains("claude-sonnet-4-5"))
.stdout(predicate::str::contains("gpt-5.2"))
.stdout(predicate::str::contains("gemini-3-pro-preview"))
.stdout(predicate::str::contains("anthropic"))
.stdout(predicate::str::contains("openai"))
.stdout(predicate::str::contains("gemini"));
}
// Step 2: models list --provider filters to that provider only
#[test]
fn models_list_filters_by_provider() {
let assert = ullm()
.args(["models", "list", "--provider", "anthropic"])
.assert()
.success()
.stdout(predicate::str::contains("claude-opus-4-6"))
.stdout(predicate::str::contains("claude-sonnet-4-5"));
// Should NOT contain other providers
assert
.stdout(predicate::str::contains("gpt-5.2").not())
.stdout(predicate::str::contains("gemini-3-pro-preview").not());
}
// Step 3: models list --query does substring match on id/name/aliases
#[test]
fn models_list_filters_by_query() {
ullm()
.args(["models", "list", "--query", "opus"])
.assert()
.success()
.stdout(predicate::str::contains("claude-opus-4-6"))
.stdout(predicate::str::contains("claude-sonnet-4-5").not());
}
#[test]
fn models_list_query_is_case_insensitive() {
ullm()
.args(["models", "list", "--query", "OPUS"])
.assert()
.success()
.stdout(predicate::str::contains("claude-opus-4-6"));
}
#[test]
fn models_list_query_matches_aliases() {
ullm()
.args(["models", "list", "--query", "codex"])
.assert()
.success()
.stdout(predicate::str::contains("gpt-5.2-codex"));
}
// Step 4: bare "models" defaults to list
#[test]
fn models_bare_defaults_to_list() {
ullm()
.args(["models"])
.assert()
.success()
.stdout(predicate::str::contains("claude-opus-4-6"))
.stdout(predicate::str::contains("gpt-5.2"))
.stdout(predicate::str::contains("gemini-3-pro-preview"));
}
// Step 5: prompt requires prompt text (errors when no prompt and stdin is tty)
#[test]
fn prompt_errors_without_prompt_text() {
// assert_cmd provides no stdin by default (simulating a tty-like "empty pipe")
// We pass an empty stdin to avoid tty detection
ullm()
.args(["prompt"])
.write_stdin("")
.assert()
.failure()
.stderr(predicate::str::contains("no prompt provided"));
}
// Step 9: stdin piping — reads from stdin when no prompt arg
#[test]
fn prompt_reads_from_stdin() {
// This test verifies stdin is read, but will fail at the API call stage
// since no API key is set. The error should NOT be "no prompt provided".
let result = ullm()
.args(["prompt", "--no-stream", "-m", "test-model"])
.write_stdin("hello from stdin")
.assert()
.failure();
// Should NOT complain about missing prompt
result.stderr(predicate::str::contains("no prompt provided").not());
}
// Step 9b: stdin + arg concatenation
#[test]
fn prompt_concatenates_stdin_and_arg() {
// Same as above — verifies it doesn't error on "no prompt"
let result = ullm()
.args(["prompt", "--no-stream", "-m", "test-model", "summarize this"])
.write_stdin("some input text")
.assert()
.failure();
result.stderr(predicate::str::contains("no prompt provided").not());
}
// Step 10: -o option parsing
#[test]
fn prompt_rejects_bad_option_format() {
ullm()
.args(["prompt", "-o", "bad_option", "hello"])
.assert()
.failure()
.stderr(predicate::str::contains("expected key=value"));
}
// Step 6/7/8: Integration tests gated behind API key
#[test]
#[ignore]
fn prompt_no_stream_generates_response() {
ullm()
.args(["prompt", "--no-stream", "-m", "claude-sonnet-4-5", "Say just the word 'hello'"])
.assert()
.success()
.stdout(predicate::str::is_empty().not());
}
#[test]
#[ignore]
fn prompt_stream_generates_response() {
ullm()
.args(["prompt", "-m", "claude-sonnet-4-5", "Say just the word 'hello'"])
.assert()
.success()
.stdout(predicate::str::is_empty().not());
}
#[test]
#[ignore]
fn prompt_usage_shows_tokens() {
ullm()
.args(["prompt", "--no-stream", "-u", "-m", "claude-sonnet-4-5", "Say just the word 'hello'"])
.assert()
.success()
.stderr(predicate::str::contains("Tokens:"));
}
}