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Add --protocol-version flag to cli-client example (#2406)

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Felix Weinberger 2026-07-02 13:12:49 +01:00 • committed by GitHub
commit eacf2e5dbe
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1 changed files with 92 additions and 29 deletions
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36
examples/cli-client/cli.ts
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@ -24,14 +24,15 @@ import type { LLMProvider } from './providers/provider';
import { ScriptedProvider } from './providers/scripted';
const USAGE = `usage: tsx cli.ts [options]
--server <target> connect to just this server: an http(s) URL (OAuth on demand) or a stdio command line (repeatable)
--config <path> mcpServers config file (default: ./config.json, falling back to spawning the sibling todos-server)
--provider <name> scripted | anthropic | openai | gemini (default: first one with an API key in the env, else scripted)
--model <id> pin a model id (default: the provider's latest mid-tier model)
--root <path> workspace root exposed to servers via roots/list (repeatable; default: cwd)
--callback-port <n> fixed loopback port for the OAuth callback (default: a free port; set this when port-forwarding over SSH)
--legacy use the 2025 initialize handshake instead of probing for 2026-07-28
--help this help`;
--server <target> connect to just this server: an http(s) URL (OAuth on demand) or a stdio command line (repeatable)
--config <path> mcpServers config file (default: ./config.json, falling back to spawning the sibling todos-server)
--provider <name> scripted | anthropic | openai | gemini (default: first one with an API key in the env, else scripted)
--model <id> pin a model id (default: the provider's latest mid-tier model)
--root <path> workspace root exposed to servers via roots/list (repeatable; default: cwd)
--callback-port <n> fixed loopback port for the OAuth callback (default: a free port; set this when port-forwarding over SSH)
--legacy use the 2025 initialize handshake instead of probing for 2026-07-28
--protocol-version <v> negotiate exactly this revision: 2025-era values (e.g. 2025-06-18) via the legacy handshake, 2026-07-28+ via a modern pin
--help this help`;
function pickProvider(name: string | undefined, model: string | undefined): LLMProvider {
const chosen =
@ -73,6 +74,7 @@ const { values } = parseArgs({
root: { type: 'string', multiple: true },
'callback-port': { type: 'string' },
legacy: { type: 'boolean' },
'protocol-version': { type: 'string' },
help: { type: 'boolean', short: 'h' }
}
});
@ -111,15 +113,17 @@ for (const [serverName, entry] of Object.entries(config.mcpServers)) {
ui.status(` ${serverName} → ${'url' in entry ? entry.url : [entry.command, ...(entry.args ?? [])].join(' ')}`);
}
const host = new McpHost({
ui,
provider,
roots: values.root ?? [process.cwd()],
legacy: values.legacy ?? false,
oauthCallbackPort: values['callback-port'] ? Number.parseInt(values['callback-port'], 10) : undefined
});
hostRef.current = host;
let host: McpHost;
try {
host = new McpHost({
ui,
provider,
roots: values.root ?? [process.cwd()],
legacy: values.legacy ?? false,
protocolVersion: values['protocol-version'],
oauthCallbackPort: values['callback-port'] ? Number.parseInt(values['callback-port'], 10) : undefined
});
hostRef.current = host;
await host.connect(config);
} catch (error) {
ui.print(error instanceof Error ? error.message : String(error));