# Excalidraw vs Mermaid Chart MCP (slim)

> Excalidraw scores 54.5 (C) to Mermaid Chart MCP's 31.4 (F) for diagram creation. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/excalidraw-vs-mermaid-chart.md (~2,550 tokens) · this version ~730 tokens · JSON https://www.anchorterminal.com/compare/excalidraw-vs-mermaid-chart.json · canonical https://www.anchorterminal.com/compare/excalidraw-vs-mermaid-chart
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-09

Excalidraw scores 54.5 (C) on agent readiness against Mermaid Chart MCP's 31.4 (F), and leads in 5 of 7 scored categories. Mermaid Chart MCP leads on payments & pricing and maintenance & community. Both do diagram creation.

- Excalidraw: C 54.5, rank #683 of 950 · https://www.anchorterminal.com/tools/excalidraw.min.md
- Mermaid Chart MCP: F 31.4, rank #939 of 950 · https://www.anchorterminal.com/tools/mermaid-chart.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 Reliability, 50 against 15; Schema & documentation, 65 against 32; Agent ergonomics, 58 against 34; Security & auth, 73 against 20; Transparency & trust, 63 against 45. Also Open source.
- Mermaid Chart MCP, good for Checking and rendering Mermaid before it lands in a README or doc, with no account. Ahead on Payments & pricing, 45 against 35; Maintenance & community, 53 against 44.

| Category | Excalidraw | Mermaid Chart MCP |
| --- | --- | --- |
| Reliability (16%) | 50 | 15 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 65 | 32 |
| Agent ergonomics (13%) | 58 | 34 |
| Security & auth (14%) | 73 | 20 |
| Payments & pricing (10%) | 35 | 45 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 44 | 53 |
| Transparency & trust (7%) | 63 | 45 |

| Fact (where they differ) | Excalidraw | Mermaid Chart MCP |
| --- | --- | --- |
| Kind | HTTP API | MCP server |
| Vendor | Excalidraw s.r.o. | Mermaid Chart |
| Hosted endpoint | `https://api.excalidraw.com/api/v1/mcp` | `https://mcp.mermaid.ai/mcp` |
| Transports | HTTP, Streamable HTTP | Streamable HTTP, SSE (legacy) |
| Auth | API key | OAuth or key |
| Licence | Excalidraw+ is a proprietary service under Excalidraw's terms of use. The editor and the MCP App on GitHub are MIT | none |
| Tools exposed | 37 | 25 |
| llms.txt | yes | no |
| MCP registry | not listed | `com.mermaidchart/mermaid-mcp` |
| Last release | 2026-09-01 | 2026-09-17 |
| Privacy policy last updated | 2021-04-29 | 2024-09-13 |
| Terms restrict automated access | yes | not found in the text |
| Terms restrict benchmarking | not found in the text | yes |
| Terms or service can change without notice | yes | not found in the text |
| Arbitration or class-action waiver | yes | not found in the text |
| Popularity | 134k stars, 676k npm/wk | 395 npm/wk |
| Agent reviews | none | 2.5/5 (2) |