Files
ruvnet--RuView/harness/ruview/src/mcp-server.js
T
rUv 4001e9e178 feat(harness): npx @ruvnet/ruview operator harness + ADR-182 (#1123)
A host-portable RuView agent harness minted via MetaHarness and hardened
per ADR-182. Published as @ruvnet/ruview@0.1.0 (bare `ruview` blocked by
npm's typosquat filter → scoped fallback).

What it does:
- 6 fail-closed `ruview.*` tools (onboard, claim_check, verify,
  node_monitor, calibrate, node_flash) exposed as CLI verbs + a
  dependency-free MCP stdio server.
- The "prove everything" rule made executable: `ruview.claim_check`
  flags untagged accuracy claims and the retracted "100%" framing.
- 5 host-neutral skills (onboard/provision-node/calibrate-room/
  train-pose/verify) + bundled .claude/ config + provenance manifest.

Validated: 17/17 unit tests, live MCP handshake, `ruview.verify` ran the
real verify.py to VERDICT: PASS, clean `npx @ruvnet/ruview` from registry.
Packs to 16.7 kB / 21 files; kernel+host are optionalDependencies so the
operator tools install lightweight.

README: documented as the portable, multi-host companion to the in-repo
plugins/ruview/ Claude Code plugin (not a replacement).
2026-06-17 17:46:31 -04:00

69 lines
2.6 KiB
JavaScript

// SPDX-License-Identifier: MIT
// RuView harness — minimal MCP stdio server (JSON-RPC 2.0 over stdin/stdout).
//
// Dependency-free on purpose: a published `npx ruview` must `mcp start` without
// pulling the full MCP SDK. Implements the subset hosts use: `initialize`,
// `tools/list`, `tools/call`, and the `notifications/initialized` ack. Logs go to
// stderr ONLY — stdout is the JSON-RPC channel and must stay clean.
import { createInterface } from 'node:readline';
import { listTools, runTool } from './tools.js';
const PROTOCOL_VERSION = '2024-11-05';
const SERVER_INFO = { name: 'ruview', version: '0.1.0' };
function send(msg) {
process.stdout.write(JSON.stringify(msg) + '\n');
}
function result(id, res) { send({ jsonrpc: '2.0', id, result: res }); }
function error(id, code, message) { send({ jsonrpc: '2.0', id, error: { code, message } }); }
function log(...a) { process.stderr.write('[ruview-mcp] ' + a.join(' ') + '\n'); }
function handle(msg) {
const { id, method, params } = msg;
switch (method) {
case 'initialize':
return result(id, {
protocolVersion: PROTOCOL_VERSION,
capabilities: { tools: { listChanged: false } },
serverInfo: SERVER_INFO,
instructions: 'RuView WiFi-sensing operator tools. All results are fail-closed; accuracy claims must pass ruview.claim_check.',
});
case 'notifications/initialized':
case 'initialized':
return; // notification — no response
case 'ping':
return result(id, {});
case 'tools/list':
return result(id, { tools: listTools() });
case 'tools/call': {
const name = params?.name;
const args = params?.arguments || {};
const out = runTool(name, args);
// MCP content envelope: text block with the JSON, isError reflects ok=false.
return result(id, {
content: [{ type: 'text', text: JSON.stringify(out, null, 2) }],
isError: out && out.ok === false,
});
}
default:
if (id !== undefined) error(id, -32601, `Method not found: ${method}`);
}
}
export function startMcpServer() {
log(`starting (protocol ${PROTOCOL_VERSION}, ${listTools().length} tools)`);
const rl = createInterface({ input: process.stdin, crlfDelay: Infinity });
rl.on('line', (line) => {
const s = line.trim();
if (!s) return;
let msg;
try { msg = JSON.parse(s); } catch { return log('bad JSON line dropped'); }
try { handle(msg); } catch (err) {
if (msg && msg.id !== undefined) error(msg.id, -32603, String(err && err.message || err));
log('handler error:', String(err));
}
});
rl.on('close', () => { log('stdin closed — exiting'); process.exit(0); });
}