Files
ra-h-os/apps/mcp-server-standalone/index.js
T
“BeeRad”andClaude Opus 4.5 bcea76800b feat: standalone MCP server (ra-h-mcp-server)
- Added apps/mcp-server-standalone/ with direct SQLite access
- Works without RA-OS app running
- Install via: npx ra-h-mcp-server
- Updated docs/8_mcp.md with setup instructions

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
2026-02-02 09:26:46 +11:00

438 lines
13 KiB
JavaScript

#!/usr/bin/env node
'use strict';
const { z } = require('zod');
const { McpServer } = require('@modelcontextprotocol/sdk/server/mcp.js');
const { StdioServerTransport } = require('@modelcontextprotocol/sdk/server/stdio.js');
const { initDatabase, getDatabasePath, closeDatabase } = require('./services/sqlite-client');
const nodeService = require('./services/nodeService');
const edgeService = require('./services/edgeService');
const dimensionService = require('./services/dimensionService');
// Server info
const serverInfo = {
name: 'ra-h-standalone',
version: '1.0.0'
};
const instructions = [
'RA-H Knowledge Base - Direct SQLite access.',
'Use rah_add_node to create nodes with dimensions.',
'Use rah_search_nodes to find existing content before creating duplicates.',
'All operations happen locally on this device.'
].join(' ');
// Tool schemas
const addNodeInputSchema = {
title: z.string().min(1).max(160).describe('Node title'),
content: z.string().max(20000).optional().describe('Node content/notes'),
link: z.string().url().optional().describe('Source URL'),
description: z.string().max(2000).optional().describe('Brief description'),
dimensions: z.array(z.string()).min(1).max(5).describe('Categories/tags (1-5 required)'),
metadata: z.record(z.any()).optional().describe('Additional metadata'),
chunk: z.string().max(50000).optional().describe('Full source text')
};
const searchNodesInputSchema = {
query: z.string().min(1).max(400).describe('Search query'),
limit: z.number().min(1).max(25).optional().describe('Max results (default 10)'),
dimensions: z.array(z.string()).max(5).optional().describe('Filter by dimensions')
};
const getNodesInputSchema = {
nodeIds: z.array(z.number().int().positive()).min(1).max(10).describe('Node IDs to load')
};
const updateNodeInputSchema = {
id: z.number().int().positive().describe('Node ID'),
updates: z.object({
title: z.string().optional().describe('New title'),
content: z.string().optional().describe('Content to APPEND'),
link: z.string().optional().describe('New link'),
dimensions: z.array(z.string()).optional().describe('New dimensions (replaces existing)'),
metadata: z.record(z.any()).optional().describe('New metadata')
}).describe('Fields to update')
};
const createEdgeInputSchema = {
sourceId: z.number().int().positive().describe('Source node ID'),
targetId: z.number().int().positive().describe('Target node ID'),
explanation: z.string().min(1).describe('Why does this connection exist?')
};
const queryEdgesInputSchema = {
nodeId: z.number().int().positive().optional().describe('Find edges for this node'),
limit: z.number().min(1).max(50).optional().describe('Max edges (default 25)')
};
const listDimensionsInputSchema = {};
const createDimensionInputSchema = {
name: z.string().min(1).describe('Dimension name'),
description: z.string().max(500).optional().describe('Description'),
isPriority: z.boolean().optional().describe('Lock for auto-assignment')
};
const updateDimensionInputSchema = {
name: z.string().min(1).describe('Current dimension name'),
newName: z.string().optional().describe('New name (for renaming)'),
description: z.string().max(500).optional().describe('New description'),
isPriority: z.boolean().optional().describe('Lock/unlock dimension')
};
const deleteDimensionInputSchema = {
name: z.string().min(1).describe('Dimension name to delete')
};
// Helper to sanitize dimensions
function sanitizeDimensions(raw) {
if (!Array.isArray(raw)) return [];
const result = [];
const seen = new Set();
for (const value of raw) {
if (typeof value !== 'string') continue;
const trimmed = value.trim();
if (!trimmed) continue;
const lowered = trimmed.toLowerCase();
if (seen.has(lowered)) continue;
seen.add(lowered);
result.push(trimmed);
if (result.length >= 5) break;
}
return result;
}
// Log to stderr (stdout is reserved for MCP protocol)
function log(...args) {
console.error('[ra-h-standalone]', ...args);
}
async function main() {
// Initialize database
try {
initDatabase();
log('Database connected:', getDatabasePath());
} catch (error) {
log('ERROR:', error.message);
process.exit(1);
}
const server = new McpServer(serverInfo, { instructions });
// ========== NODE TOOLS ==========
server.registerTool(
'rah_add_node',
{
title: 'Add RA-H node',
description: 'Create a new node in the local knowledge base.',
inputSchema: addNodeInputSchema
},
async ({ title, content, link, description, dimensions, metadata, chunk }) => {
const normalizedDimensions = sanitizeDimensions(dimensions);
if (normalizedDimensions.length === 0) {
throw new Error('At least one dimension is required.');
}
const node = nodeService.createNode({
title: title.trim(),
content: content?.trim(),
link: link?.trim(),
description: description?.trim(),
dimensions: normalizedDimensions,
metadata: metadata || {},
chunk: chunk?.trim()
});
const summary = `Created node #${node.id}: ${node.title} [${node.dimensions.join(', ')}]`;
return {
content: [{ type: 'text', text: summary }],
structuredContent: {
nodeId: node.id,
title: node.title,
dimensions: node.dimensions,
message: summary
}
};
}
);
server.registerTool(
'rah_search_nodes',
{
title: 'Search RA-H nodes',
description: 'Find existing nodes by keyword search.',
inputSchema: searchNodesInputSchema
},
async ({ query, limit = 10, dimensions }) => {
const normalizedDimensions = sanitizeDimensions(dimensions || []);
const nodes = nodeService.getNodes({
search: query.trim(),
limit: Math.min(Math.max(limit, 1), 25),
dimensions: normalizedDimensions.length > 0 ? normalizedDimensions : undefined
});
const summary = nodes.length === 0
? 'No nodes found matching that query.'
: `Found ${nodes.length} node(s).`;
return {
content: [{ type: 'text', text: summary }],
structuredContent: {
count: nodes.length,
nodes: nodes.map(node => ({
id: node.id,
title: node.title,
content: node.content ?? null,
description: node.description ?? null,
link: node.link ?? null,
dimensions: node.dimensions || [],
updated_at: node.updated_at
}))
}
};
}
);
server.registerTool(
'rah_get_nodes',
{
title: 'Get RA-H nodes by ID',
description: 'Load full node records by their IDs.',
inputSchema: getNodesInputSchema
},
async ({ nodeIds }) => {
const uniqueIds = [...new Set(nodeIds.filter(id => Number.isFinite(id) && id > 0))];
if (uniqueIds.length === 0) {
throw new Error('No valid node IDs provided.');
}
const nodes = [];
for (const id of uniqueIds) {
const node = nodeService.getNodeById(id);
if (node) {
nodes.push({
id: node.id,
title: node.title,
content: node.content ?? null,
description: node.description ?? null,
link: node.link ?? null,
dimensions: node.dimensions || [],
updated_at: node.updated_at
});
}
}
return {
content: [{ type: 'text', text: `Loaded ${nodes.length} of ${uniqueIds.length} nodes.` }],
structuredContent: {
count: nodes.length,
nodes
}
};
}
);
server.registerTool(
'rah_update_node',
{
title: 'Update RA-H node',
description: 'Update an existing node. Content is APPENDED, dimensions are replaced.',
inputSchema: updateNodeInputSchema
},
async ({ id, updates }) => {
if (!updates || Object.keys(updates).length === 0) {
throw new Error('At least one field must be provided in updates.');
}
const node = nodeService.updateNode(id, updates, { appendContent: true });
return {
content: [{ type: 'text', text: `Updated node #${id}` }],
structuredContent: {
success: true,
nodeId: node.id,
message: `Updated node #${id}`
}
};
}
);
// ========== EDGE TOOLS ==========
server.registerTool(
'rah_create_edge',
{
title: 'Create RA-H edge',
description: 'Create a connection between two nodes.',
inputSchema: createEdgeInputSchema
},
async ({ sourceId, targetId, explanation }) => {
const edge = edgeService.createEdge({
from_node_id: sourceId,
to_node_id: targetId,
explanation: explanation.trim(),
source: 'mcp'
});
return {
content: [{ type: 'text', text: `Created edge from #${sourceId} to #${targetId}` }],
structuredContent: {
success: true,
edgeId: edge.id,
message: `Created edge from #${sourceId} to #${targetId}`
}
};
}
);
server.registerTool(
'rah_query_edges',
{
title: 'Query RA-H edges',
description: 'Find connections between nodes.',
inputSchema: queryEdgesInputSchema
},
async ({ nodeId, limit = 25 }) => {
const edges = edgeService.getEdges({
nodeId,
limit: Math.min(Math.max(limit, 1), 50)
});
return {
content: [{ type: 'text', text: `Found ${edges.length} edge(s).` }],
structuredContent: {
count: edges.length,
edges: edges.map(e => ({
id: e.id,
from_node_id: e.from_node_id,
to_node_id: e.to_node_id,
type: e.context?.type ?? null,
explanation: e.context?.explanation ?? null
}))
}
};
}
);
// ========== DIMENSION TOOLS ==========
server.registerTool(
'rah_list_dimensions',
{
title: 'List RA-H dimensions',
description: 'Get all dimensions with node counts.',
inputSchema: listDimensionsInputSchema
},
async () => {
const dimensions = dimensionService.getDimensions();
return {
content: [{ type: 'text', text: `Found ${dimensions.length} dimension(s).` }],
structuredContent: {
count: dimensions.length,
dimensions
}
};
}
);
server.registerTool(
'rah_create_dimension',
{
title: 'Create RA-H dimension',
description: 'Create a new dimension/category.',
inputSchema: createDimensionInputSchema
},
async ({ name, description, isPriority }) => {
const dimension = dimensionService.createDimension({
name,
description,
isPriority
});
return {
content: [{ type: 'text', text: `Created dimension: ${dimension.dimension}` }],
structuredContent: {
success: true,
dimension: dimension.dimension,
message: `Created dimension: ${dimension.dimension}`
}
};
}
);
server.registerTool(
'rah_update_dimension',
{
title: 'Update RA-H dimension',
description: 'Update or rename a dimension.',
inputSchema: updateDimensionInputSchema
},
async ({ name, newName, description, isPriority }) => {
const result = dimensionService.updateDimension({
name,
currentName: name,
newName,
description,
isPriority
});
return {
content: [{ type: 'text', text: `Updated dimension: ${result.dimension}` }],
structuredContent: {
success: true,
dimension: result.dimension,
message: `Updated dimension: ${result.dimension}`
}
};
}
);
server.registerTool(
'rah_delete_dimension',
{
title: 'Delete RA-H dimension',
description: 'Delete a dimension and remove it from all nodes.',
inputSchema: deleteDimensionInputSchema
},
async ({ name }) => {
const result = dimensionService.deleteDimension(name);
return {
content: [{ type: 'text', text: `Deleted dimension: ${name}` }],
structuredContent: {
success: true,
message: `Deleted dimension: ${name}`
}
};
}
);
// Connect transport
const transport = new StdioServerTransport();
await server.connect(transport);
log('MCP server ready');
// Handle graceful shutdown
process.on('SIGINT', () => {
log('Shutting down...');
closeDatabase();
process.exit(0);
});
process.on('SIGTERM', () => {
log('Shutting down...');
closeDatabase();
process.exit(0);
});
}
main().catch((error) => {
console.error('[ra-h-standalone] Fatal error:', error);
process.exit(1);
});