MCP, MCP server
Mermaid Mcp
AI-powered Mermaid diagram generation using Model Context Protocol (MCP)
Compatibility: Not stated.
Grade B
Minor issues only, no Medium or High. Worth a quick look at the findings below before installing.
Not a guarantee. A hygiene check of the source at the commit shown, not a security audit.
PERMISSION_DELETE_FILES NETWORK_NO_FIXED_HOST SECRETS_PATH_DOTENV
Why this grade
- PERMISSION_DELETE_FILES Low
Contains a call that can delete files.
mermaid-mcp-server/src/utils/filesystem.ts, line 146
await fs.unlink(filePath); - NETWORK_NO_FIXED_HOST Low
Makes a network call whose host is not written as a fixed address.
mcp-connector/quick-test.js, line 30
const req = http.request(options, (res) => { - SECRETS_PATH_DOTENV Low
Mentions a .env file.
.dockerignore, line 40
.env
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
mermaid-mcp-server/src/utils/filesystem.ts, line 146
await fs.unlink(filePath);
UserGuide.md, line 360
process = subprocess.Popen(
UserGuide.md, line 1610
result = subprocess.run(
Install and update
Pass
No install-time script found, and dependencies are pinned or absent.
Network
Concern
can reach a host that is not written as a fixed address.
NETWORK_NO_FIXED_HOST
mcp-connector/quick-test.js, line 30
const req = http.request(options, (res) => {
mcp-connector/start.sh, line 111
if curl -s http://localhost:$MCP_SERVER_PORT/health > /dev/null 2>&1; then
mcp-connector/start.sh, line 157
if curl -s http://localhost:$MCP_SERVER_PORT/health > /dev/null 2>&1; then
Show more
mcp-connector/start.sh, line 195
response=$(curl -s http://localhost:$MCP_SERVER_PORT/health)
mcp-connector/start.sh, line 205
response=$(curl -s http://localhost:$MCP_SERVER_PORT/api/diagram/types)
mcp-connector/start.sh, line 215
response=$(curl -s -X POST http://localhost:$MCP_SERVER_PORT/api/diagram/generate \
mcp-connector/start.sh, line 259
echo " --test Run curl tests against the API"
mcp-connector/start.sh, line 265
echo " $0 --test # Test with curl commands"
mcp-connector/test.sh, line 90
HEALTH_RESPONSE=$(curl -s http://localhost:3000/health)
mcp-connector/test.sh, line 99
OPENAPI_RESPONSE=$(curl -s http://localhost:3000/openapi.json)
mcp-connector/test.sh, line 107
MANIFEST_RESPONSE=$(curl -s http://localhost:3000/.well-known/ai-plugin.json)
mcp-connector/test.sh, line 143
const ws = new WebSocket('ws://localhost:3001');
mcp-connector/examples/rest-api-client.js, line 15
const health = await fetch(`${baseURL}/health`);
mcp-connector/examples/rest-api-client.js, line 21
const toolsRes = await fetch(`${baseURL}/api/tools`);
mcp-connector/examples/rest-api-client.js, line 27
const generateRes = await fetch(`${baseURL}/api/diagram/generate`, {
mcp-connector/examples/rest-api-client.js, line 43
const typesRes = await fetch(`${baseURL}/api/diagram/types`);
Secrets
Concern
reads a credential or environment file.
SECRETS_PATH_DOTENV
.dockerignore, line 39
# Environment
.dockerignore, line 40
.env
.dockerignore, line 41
.env.local
Show more
.gitignore, line 24
# Environment
.gitignore, line 25
.env
mcp-connector/.gitignore, line 3
*.log
mcp-connector/CONFIGURATION.md, line 21
Create a `.env` file in the connector directory:
mcp-connector/CONFIGURATION.md, line 25
cp .env.example .env
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 757b86efa399. can delete files. can reach a host that is not written as a fixed address. reads a credential or environment file. no licence file found.
Date and source
Date checked:
github.com
Commit graded: 757b86efa399623c5fb081478ae57e6b9f2b1a08
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