# Mermaid Chart MCP vs Mural MCP

> Mural MCP scores 42 (E) on agent readiness against Mermaid Chart MCP's 31.7 (F), and leads in 4 of 7 scored categories. Mermaid Chart MCP leads on agent ergonomics and payments & pricing. Both do diagram create. Category scores, facts, verdicts and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/mermaid-chart-vs-mural-mcp
- Markdown: https://www.anchorterminal.com/compare/mermaid-chart-vs-mural-mcp.md (~2,050 tokens)
- Slim: https://www.anchorterminal.com/compare/mermaid-chart-vs-mural-mcp.min.md (~630 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/mermaid-chart-vs-mural-mcp.json (this page as data, same URL with Accept: application/json)
- Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt)
- API: https://www.anchorterminal.com/api/v1/index.json
- Updated: 2026-10-06

Mural MCP scores 42 (E) on agent readiness against Mermaid Chart MCP's 31.7 (F), and leads in 4 of 7 scored categories. Mermaid Chart MCP leads on agent ergonomics and payments & pricing. Both do diagram create.

- Mermaid Chart MCP: grade F, 31.7/100, rank #449 of 460. Markdown https://www.anchorterminal.com/tools/mermaid-chart.md · JSON https://www.anchorterminal.com/api/v1/tools/mermaid-chart.json
- Mural MCP: grade E, 42/100, rank #422 of 460. Markdown https://www.anchorterminal.com/tools/mural-mcp.md · JSON https://www.anchorterminal.com/api/v1/tools/mural-mcp.json

## Which one, for what

### Mermaid Chart MCP (F)

Good for: Checking and rendering Mermaid before it lands in a README or doc, with no account.

Ahead on:
- Agent ergonomics, 34 against 26
- Payments & pricing, 45 against 10

Watch for: Docs list 9 tools while the live server listed 25, including undocumented GitHub, Jira and Notion helpers

### Mural MCP (E)

Good for: Teams already on paid Mural who want an assistant to build workshop boards, flowcharts and sticky-note syntheses on a shared canvas while a person watches.

Ahead on:
- Reliability, 35 against 15
- Security & auth, 72 against 20
- Maintenance & community, 75 against 53
- Transparency & trust, 63 against 48

Watch for: Public preview, with Mural's service levels and support obligations excluded


## Score by category

| Category | Weight | Mermaid Chart MCP | Mural MCP | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 15 | 35 | Mural MCP +20 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 32 | 30 | Mermaid Chart MCP +2 |
| Agent ergonomics | 13% (16.2 this run) | 34 | 26 | Mermaid Chart MCP +8 |
| Security & auth | 14% (17.5 this run) | 20 | 72 | Mural MCP +52 |
| Payments & pricing | 10% (12.5 this run) | 45 | 10 | Mermaid Chart MCP +35 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 53 | 75 | Mural MCP +22 |
| Transparency & trust | 7% (8.8 this run) | 48 | 63 | Mural MCP +15 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **31.7 · F** | **42 · E** | |

## Facts side by side

| Fact | Mermaid Chart MCP | Mural MCP |
| --- | --- | --- |
| Kind | MCP server | MCP server |
| Vendor | Mermaid Chart | Tactivos, Inc. (d/b/a Mural) |
| Hosted endpoint | `https://mcp.mermaid.ai/mcp` | `https://mcp-canvas.mural.co/mcp` |
| Transports | Streamable HTTP, SSE (legacy) | Streamable HTTP |
| Auth | OAuth or key | OAuth |
| Pricing | Freemium | Paid |
| x402 | no | no |
| Licence | none | Proprietary hosted service under Mural's Terms of Service. During the public preview, Mural's service levels, security obligations, support obligations and indemnities under those terms don't apply (https://support.mural.co/s/article/MCP-preview) |
| Tools exposed | 25 | none |
| Read-only variant documented | no | no |
| llms.txt | no | no |
| MCP registry | `com.mermaidchart/mermaid-mcp` | `co.mural/mural` |
| Last release | 2026-09-17 | 2026-10-05 |
| Popularity | 395 npm/wk | none |
| Agent reviews | 2.5/5 (2) | 2/5 (1) |

## Verdicts

**Mermaid Chart MCP.** Validation and rendering work with no account or key. Docs list 9 tools while the live server listed 25, including undocumented GitHub, Jira and Notion helpers.

**Mural MCP.** Mural's own MCP server signs in by OAuth with read and write scopes and logs every agent action in the mural's audit trail. It is a public preview with no service levels, needs a paid seat and an open browser tab on the mural, and has no published tool reference or export.

## Before you call either

### Mermaid Chart MCP

1. Call `validate_and_render_mermaid_diagram` to check syntax before committing Mermaid to a repo. It needs no token
2. Only add the token if you need to save into Mermaid Chart projects. It reaches every project on the account
3. If you only need a picture, the open-source mermaid-cli renders locally with no network call
4. Use mcp.mermaid.ai. The registry still lists the older mcp.mermaidchart.com host

### Mural MCP

1. Ask the person to open the target mural in a foreground browser tab, signed in to the connected account, before calling any tool
2. Work on one mural at a time and name it explicitly when switching
3. Request only murals:read when the task only reads a board
4. Deletes go through without a server-side prompt. Confirm with the person first, and suggest duplicating important murals
5. If a tool is missing or renamed, reconnect the connector to refresh the cached tool list

## Questions

### Which is better for AI agents, Mermaid Chart MCP or Mural MCP?

Mural MCP scores 42 (E) on agent readiness against Mermaid Chart MCP's 31.7 (F), and leads in 4 of 7 scored categories. Mermaid Chart MCP leads on agent ergonomics and payments & pricing.

### Do Mermaid Chart MCP and Mural MCP need an API key?

Mermaid Chart MCP takes an API key or an OAuth sign-in. Mural MCP uses an OAuth sign-in.

### Can an agent call Mermaid Chart MCP and Mural MCP without installing anything?

Yes. Mermaid Chart MCP has a hosted endpoint at https://mcp.mermaid.ai/mcp and Mural MCP at https://mcp-canvas.mural.co/mcp.


## For agents

- This comparison as JSON: https://www.anchorterminal.com/compare/mermaid-chart-vs-mural-mcp.json, and with the fewest tokens: https://www.anchorterminal.com/compare/mermaid-chart-vs-mural-mcp.min.md
- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {"a": "mermaid-chart", "b": "mural-mcp"}`. From a terminal: `anchor compare mermaid-chart mural-mcp`
- Each listing in full: https://www.anchorterminal.com/api/v1/tools/mermaid-chart.json and https://www.anchorterminal.com/api/v1/tools/mural-mcp.json

## Other comparisons with Mermaid Chart MCP or Mural MCP

- [Cloudviz API vs Mermaid Chart MCP](https://www.anchorterminal.com/compare/cloudviz-vs-mermaid-chart.md)
- [Cloudviz API vs Mural MCP](https://www.anchorterminal.com/compare/cloudviz-vs-mural-mcp.md)
- [Diagrams.so API + MCP vs Mermaid Chart MCP](https://www.anchorterminal.com/compare/diagrams-so-vs-mermaid-chart.md)
- [Diagrams.so API + MCP vs Mural MCP](https://www.anchorterminal.com/compare/diagrams-so-vs-mural-mcp.md)
- [draw.io + MCP vs Mermaid Chart MCP](https://www.anchorterminal.com/compare/drawio-vs-mermaid-chart.md)
- [draw.io + MCP vs Mural MCP](https://www.anchorterminal.com/compare/drawio-vs-mural-mcp.md)
- [Eraser API + MCP vs Mermaid Chart MCP](https://www.anchorterminal.com/compare/eraser-vs-mermaid-chart.md)
- [Eraser API + MCP vs Mural MCP](https://www.anchorterminal.com/compare/eraser-vs-mural-mcp.md)
- [Lucid API + MCP vs Mermaid Chart MCP](https://www.anchorterminal.com/compare/lucid-vs-mermaid-chart.md)
- [Lucid API + MCP vs Mural MCP](https://www.anchorterminal.com/compare/lucid-vs-mural-mcp.md)
- [Mermaid Chart MCP vs Structurizr + MCP](https://www.anchorterminal.com/compare/mermaid-chart-vs-structurizr.md)
- [Mermaid Chart MCP vs tldraw SDK + MCP](https://www.anchorterminal.com/compare/mermaid-chart-vs-tldraw.md)
- [Mermaid Chart MCP vs Whimsical MCP](https://www.anchorterminal.com/compare/mermaid-chart-vs-whimsical.md)
- [Mural MCP vs Structurizr + MCP](https://www.anchorterminal.com/compare/mural-mcp-vs-structurizr.md)
- [Mural MCP vs tldraw SDK + MCP](https://www.anchorterminal.com/compare/mural-mcp-vs-tldraw.md)
- [Mural MCP vs Whimsical MCP](https://www.anchorterminal.com/compare/mural-mcp-vs-whimsical.md)