# Excalidraw vs PlantUML (slim)

> PlantUML scores 66.9 (B) to Excalidraw's 54.5 (C) for diagram creation. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/excalidraw-vs-plantuml.md (~2,550 tokens) · this version ~730 tokens · JSON https://www.anchorterminal.com/compare/excalidraw-vs-plantuml.json · canonical https://www.anchorterminal.com/compare/excalidraw-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 Excalidraw's 54.5 (C), and leads in 5 of 7 scored categories. Excalidraw leads on security & auth. Both do diagram creation.

- Excalidraw: C 54.5, rank #683 of 950 · https://www.anchorterminal.com/tools/excalidraw.min.md
- PlantUML: B 66.9, rank #270 of 950 · https://www.anchorterminal.com/tools/plantuml.min.md
- Excalidraw, good for Teams already on Excalidraw+ that want agents to create and edit hand-drawn diagrams, slides and wireframes in a shared workspace, and one-off sketches through the free MCP App. Ahead on Security & auth, 73 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 50; Agent ergonomics, 78 against 58; Payments & pricing, 60 against 35; Maintenance & community, 73 against 44; Transparency & trust, 73 against 63. Also No key needed to call it.

| Category | Excalidraw | PlantUML |
| --- | --- | --- |
| Reliability (16%) | 50 | 83 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 65 | 65 |
| Agent ergonomics (13%) | 58 | 78 |
| Security & auth (14%) | 73 | 50 |
| Payments & pricing (10%) | 35 | 60 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 44 | 73 |
| Transparency & trust (7%) | 63 | 73 |

| Fact (where they differ) | Excalidraw | PlantUML |
| --- | --- | --- |
| Kind | HTTP API | SDK + MCP |
| Vendor | Excalidraw s.r.o. | PlantUML project (Arnaud Roques) |
| Hosted endpoint | `https://api.excalidraw.com/api/v1/mcp` | no (local only) |
| Transports | HTTP, Streamable HTTP |  |
| Auth | API key | None |
| Pricing | Freemium | Free |
| Licence | Excalidraw+ is a proprietary service under Excalidraw's terms of use. The editor and the MCP App on GitHub are MIT | GPL-3.0-or-later |
| Tools exposed | 37 | none |
| llms.txt | yes | no |
| Last release | 2026-09-01 | 2026-09-05 |
| Terms last updated | no date given | no document linked |
| Privacy policy last updated | 2021-04-29 | no document linked |
| Customer content may train models | not found in the text |  |
| Terms restrict automated access | yes |  |
| Terms restrict benchmarking | not found in the text |  |
| Terms or service can change without notice | yes |  |
| Arbitration or class-action waiver | yes |  |
| Popularity | 134k stars, 676k npm/wk | 13k stars, 207 npm/wk |