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fix: classify mcp show missing server argument

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This commit is contained in:
bellman
2026-06-03 18:22:23 +09:00
parent 4d3dc5b873
commit f529fb0e55
4 changed files with 91 additions and 6 deletions
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52
rust/crates/commands/src/lib.rs
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@@ -1670,7 +1670,11 @@ fn parse_mcp_command(args: &[&str]) -> Result<SlashCommand, SlashCommandParseErr
target: None,
}),
["list", ..] => Err(usage_error("mcp list", "")),
["show"] => Err(usage_error("mcp show", "<server>")),
["show"] => Err(command_error(
"missing_argument: mcp show requires a server name.",
"mcp",
"/mcp show <server>",
)),
["show", target] => Ok(SlashCommand::Mcp {
action: Some("show".to_string()),
target: Some((*target).to_string()),
@@ -2918,12 +2922,12 @@ fn render_mcp_report_for(
}
}
Some(args) if is_help_arg(args) => Ok(render_mcp_usage(None)),
Some("show") => Ok(render_mcp_usage(Some("show"))),
Some("show") => Ok(render_mcp_missing_argument_text("show")),
Some(args) if args.split_whitespace().next() == Some("show") => {
let mut parts = args.split_whitespace();
let _ = parts.next();
let Some(server_name) = parts.next() else {
return Ok(render_mcp_usage(Some("show")));
return Ok(render_mcp_missing_argument_text("show"));
};
if parts.next().is_some() {
return Ok(render_mcp_usage(Some(args)));
@@ -3027,12 +3031,12 @@ fn render_mcp_report_json_for(
}
}
Some(args) if is_help_arg(args) => Ok(render_mcp_usage_json(None)),
Some("show") => Ok(render_mcp_usage_json(Some("show"))),
Some("show") => Ok(render_mcp_missing_argument_json("show")),
Some(args) if args.split_whitespace().next() == Some("show") => {
let mut parts = args.split_whitespace();
let _ = parts.next();
let Some(server_name) = parts.next() else {
return Ok(render_mcp_usage_json(Some("show")));
return Ok(render_mcp_missing_argument_json("show"));
};
if parts.next().is_some() {
return Ok(render_mcp_usage_json(Some(args)));
@@ -4269,6 +4273,44 @@ fn render_mcp_usage(unexpected: Option<&str>) -> String {
lines.join("\n")
}
fn render_mcp_missing_argument_text(action: &str) -> String {
let hint = match action {
"show" => "use `claw mcp show <server>` to inspect a server",
_ => "provide the required argument for this MCP action",
};
format!(
"MCP\n Error missing argument for '{action}'\n Hint {hint}\n Usage /mcp [list|show <server>|help]"
)
}
fn render_mcp_missing_argument_json(action: &str) -> Value {
let (message, hint) = match action {
"show" => (
"mcp show requires a server name",
"Usage: claw mcp show <server>",
),
_ => (
"mcp action requires an argument",
"Usage: claw mcp [list|show <server>|help]",
),
};
json!({
"kind": "mcp",
"action": action,
"ok": false,
"status": "error",
"error_kind": "missing_argument",
"message": message,
"hint": hint,
"usage": {
"slash_command": "/mcp [list|show <server>|help]",
"direct_cli": "claw mcp [list|show <server>|help]",
"sources": [".claw/settings.json", ".claw/settings.local.json"],
},
"unexpected": Value::Null,
})
}
fn render_mcp_usage_json(unexpected: Option<&str>) -> Value {
// #748: add error_kind when unexpected is set, matching agents/plugins unknown-subcommand shape.
let error_kind: Value = if unexpected.is_some() {