MCP, MCP server
Matrix Selfhost
A self-hosted Matrix (Synapse) server with a Claude-powered MCP server that lets Claude Desktop read, search, and summarize your Matrix rooms and messages.
Compatibility: Not stated.
Grade C
One Medium finding. Read the report before installing.
Not a guarantee. A hygiene check of the source at the commit shown, not a security audit.
NETWORK_HOST_FROM_INPUT
Why this grade
- NETWORK_HOST_FROM_INPUT Medium
A file takes a URL or endpoint as input and has no fixed host list.
mcp-server/server.js, line 34
limit: z.number().int().min(1).max(200).optional().default(30).describe("How many recent messages to fetch (1 - 200; default 30)"),
Any High, or two or more Medium findings, give D. One Medium gives C. Low findings or a security Note give B. Each code names a finding behind the letter.
Grades are a hygiene check of the source at the commit shown, on the date checked, not a security audit or a guarantee. The free directory grades are automated. Before release, a PlugVet engineer reviews every paid report and any grade we hold back, including all F grades, against the source code and the evidence we quote.
What was checked
Plain notes from the hygiene checks.
Permissions
Concern
can delete files.
PERMISSION_DELETE_FILES
migration/replayJournal.js, line 18
await fs.rm(tempPath, { force: true });
Install and update
Pass
No install-time script found, and dependencies are pinned or absent.
Network
Serious
accepts a host from input, with no fixed list in this file.
NETWORK_HOST_FROM_INPUT
mcp-server/server.js, line 34
limit: z.number().int().min(1).max(200).optional().default(30).describe("How many recent messages to fetch (1 - 200; default 30)"),
migration/adminApi.js, line 8
const response = await fetch(url, {
migration/clean_rooms.js, line 74
const listRes = await fetch(`${PRIVATE_HOMESERVER}/_synapse/admin/v1/rooms`, {
Show more
migration/clean_rooms.js, line 101
const deleteRes = await fetch(`${PRIVATE_HOMESERVER}/_synapse/admin/v1/rooms/${encodeURIComponent(room.room_id)}`, {
migration/export.js, line 214
const response = await fetch(httpUrl);
migration/import.js, line 142
const response = await fetch(`${process.env.PRIVATE_HOMESERVER}/_matrix/client/v3/register?access_token=${encodeURIComponent(process.env.APPSERVICE_TOKEN)}`, {
Secrets
Concern
reads a credential or environment file.
SECRETS_ENV_READ SECRETS_PATH_DOTENV
bot/listener.js, line 14
password: process.env.BOT_PASSWORD,
bot/summarize.js, line 5
apiKey: process.env.OPENAI_API_KEY,
mcp-server/index.js, line 27
dotenv.config({ path: join(currentDir, ".env"), quiet: true });
Show more
mcp-server/matrixClient.js, line 36
const envPath = join(currentDir, ".env");
mcp-server/matrixClient.js, line 69
console.error(`[matrixClient] Automatically saved active session token and device ID to .env`);
mcp-server/matrixClient.js, line 129
const accessToken = process.env.MATRIX_ACCESS_TOKEN;
mcp-server/matrixClient.js, line 182
password: process.env.MATRIX_PASSWORD,
migration/clean_rooms.js, line 9
dotenv.config({ path: path.join(__dirname, ".env"), override: true });
migration/clean_rooms.js, line 43
process.env.ADMIN_TOKEN,
migration/export.js, line 10
// Load .env
migration/export.js, line 11
dotenv.config({ path: path.join(__dirname, ".env"), override: true });
migration/export.js, line 21
if (!process.env.PUBLIC_PASSWORD && (!process.env.PUBLIC_ACCESS_TOKEN || !process.env.PUBLIC_DEVICE_ID)) {
migration/export.js, line 27
const keyRaw = process.env.PUBLIC_RECOVERY_KEY || "";
migration/export.js, line 48
if (process.env.PUBLIC_ACCESS_TOKEN && process.env.PUBLIC_DEVICE_ID) {
migration/export.js, line 49
console.log("Using existing access token and device ID from .env...");
migration/export.js, line 79
console.log("TIP: Add these to your migration/.env to reuse this session and avoid spamming your account with unverified sessions:");
Agent instructions
Pass
No instruction to ignore earlier instructions or to hide a step.
Obfuscation
Pass
No encoded or minified payload found.
Licence
Note
no licence file found.
LICENCE_MISSING
No file path was stored.
no licence file found.
Maintainer activity
Pass
The latest commit is within the last 365 days.
Note
Hygiene check of commit 374df8fa0c65. can delete files. accepts a host from input, with no fixed list in this file. reads a credential or environment file. no licence file found.
Date and source
Date checked:
github.com
Commit graded: 374df8fa0c6525782bde682a8bb803bfec39ab5f
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