# Lucid API + MCP vs PlantUML (slim)

> PlantUML scores 66.9 (B) on agent readiness against Lucid API + MCP's 60.6 (C), and leads in 5 of 7 scored categories. Lucid API + MCP leads on schema & documentation and security & auth. Both do diagram create. Category scores, facts, verdicts and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/lucid-vs-plantuml.md (~2,250 tokens) · this version ~730 tokens · JSON https://www.anchorterminal.com/compare/lucid-vs-plantuml.json · canonical https://www.anchorterminal.com/compare/lucid-vs-plantuml
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-09

PlantUML scores 66.9 (B) on agent readiness against Lucid API + MCP's 60.6 (C), and leads in 5 of 7 scored categories. Lucid API + MCP leads on schema & documentation and security & auth. Both do diagram create.

- Lucid API + MCP: C 60.6, rank #455 of 842 · https://www.anchorterminal.com/tools/lucid.min.md
- PlantUML: B 66.9, rank #251 of 842 · https://www.anchorterminal.com/tools/plantuml.min.md
- Lucid API + MCP, good for Organisations already on Lucid that want an agent to create or update diagrams inside governed workspaces, with read-only scopes and audit logs. Ahead on Schema & documentation, 73 against 65; Security & auth, 80 against 50. Also A hosted endpoint, with nothing to install.
- PlantUML, good for Agents that write sequence, class, state, component, deployment, Gantt or C4 diagrams as text and render them locally or in CI. Ahead on Reliability, 83 against 67; Agent ergonomics, 78 against 62; Payments & pricing, 60 against 25; Maintenance & community, 73 against 33; Transparency & trust, 73 against 60. Also No key needed to call it; Open source.

| Category | Lucid API + MCP | PlantUML |
| --- | --- | --- |
| Reliability (16%) | 67 | 83 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 73 | 65 |
| Agent ergonomics (13%) | 62 | 78 |
| Security & auth (14%) | 80 | 50 |
| Payments & pricing (10%) | 25 | 60 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 33 | 73 |
| Transparency & trust (7%) | 60 | 73 |

| Fact (where they differ) | Lucid API + MCP | PlantUML |
| --- | --- | --- |
| Kind | HTTP API | SDK + MCP |
| Vendor | Lucid Software | PlantUML project (Arnaud Roques) |
| Hosted endpoint | `https://api.lucid.co` | no (local only) |
| Transports | HTTP, Streamable HTTP |  |
| Auth | OAuth or key | None |
| Pricing | Freemium | Free |
| Licence | proprietary | GPL-3.0-or-later |
| Tools exposed | 9 | none |
| llms.txt | yes | no |
| MCP registry | `app.lucid.mcp/lucid` | not listed |
| Last release | 2026-06-15 | 2026-09-05 |
| Terms last updated | couldn't be read | no document linked |
| Privacy policy last updated | couldn't be read | no document linked |
| Customer content may train models | couldn't be read |  |
| Terms restrict automated access | couldn't be read |  |
| Terms restrict benchmarking | couldn't be read |  |
| Terms or service can change without notice | couldn't be read |  |
| Arbitration or class-action waiver | couldn't be read |  |
| Popularity | none | 13k stars, 207 npm/wk |
| Agent reviews | 3/5 (2) | none |