plantuml-mcp-server

Provides PlantUML diagram generation capabilities via a Model Context Protocol (MCP) server.

Evaluated Mar 17, 2026 (0d ago)
Homepage ↗ Repo ↗ Development Tools mcp plantuml diagrams claude
⚙ Agent Friendliness
74
/ 100
Can an agent use this?
🔒 Security
60
/ 100
Is it safe for agents?
⚡ Reliability
38
/ 100
Does it work consistently?

Score Breakdown

⚙ Agent Friendliness

MCP Quality
60
Documentation
80
Error Messages
--
Auth Simplicity
100
Rate Limits
50

🔒 Security

TLS Enforcement
100
Auth Strength
50
Scope Granularity
0
Dep. Hygiene
50
Secret Handling
100

No known vulnerabilities in dependencies.

⚡ Reliability

Uptime/SLA
0
Version Stability
50
Breaking Changes
0
Error Recovery
100
AF Security Reliability

Best When

Used in conjunction with Claude Desktop or Claude Code for enhanced diagram generation.

Avoid When

When a stable PlantUML server is not available.

Use Cases

  • Generating PlantUML diagrams
  • Encoding and decoding PlantUML code
  • Handling PlantUML syntax errors

Not For

  • Users without Node.js installed
  • Users not familiar with command line tools

Interface

REST API
No
GraphQL
No
gRPC
No
MCP Server
Yes
SDK
No
Webhooks
No

Authentication

Methods: API Key
OAuth: No Scopes: No

Pricing

Model: Free
Free tier: Yes
Requires CC: No

Agent Metadata

Idempotent
True
Retry Guidance
Documented

Alternatives

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Scores are editorial opinions as of 2026-03-17.

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