# Cloudviz API vs tldraw SDK + MCP

> tldraw SDK + MCP has a score of 61 (C) against Cloudviz API's 37.9 (F). Both do diagram create. The largest gap is maintenance & community, 84 points. Category scores, facts, verdicts and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/cloudviz-vs-tldraw
- Markdown: https://www.anchorterminal.com/compare/cloudviz-vs-tldraw.md (~1,500 tokens)
- Slim: https://www.anchorterminal.com/compare/cloudviz-vs-tldraw.min.md (~330 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/cloudviz-vs-tldraw.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: 2026-10-05

tldraw SDK + MCP has a score of 61 (C) against Cloudviz API's 37.9 (F). Both do diagram create. The largest gap is maintenance & community, 84 points.

- Cloudviz API: grade F, 37.9/100, rank #432 of 452. Markdown https://www.anchorterminal.com/tools/cloudviz.md · JSON https://www.anchorterminal.com/api/v1/tools/cloudviz.json
- tldraw SDK + MCP: grade C, 61/100, rank #236 of 452. Markdown https://www.anchorterminal.com/tools/tldraw.md · JSON https://www.anchorterminal.com/api/v1/tools/tldraw.json

## Which one, for what

Pick Cloudviz API for security & auth (+13).

Pick tldraw SDK + MCP for reliability (+55), schema & documentation (+21), agent ergonomics (+21), payments & pricing (+15), maintenance & community (+84).

## Score by category

| Category | Weight | Cloudviz API | tldraw SDK + MCP | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 20 | 75 | tldraw SDK + MCP +55 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 58 | 79 | tldraw SDK + MCP +21 |
| Agent ergonomics | 13% (16.2 this run) | 50 | 71 | tldraw SDK + MCP +21 |
| Security & auth | 14% (17.5 this run) | 53 | 40 | Cloudviz API +13 |
| Payments & pricing | 10% (12.5 this run) | 20 | 35 | tldraw SDK + MCP +15 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 5 | 89 | tldraw SDK + MCP +84 |
| Transparency & trust | 7% (8.8 this run) | 47 | 51 | tldraw SDK + MCP +4 |
| Negative events | ≤15 | 0 | -2 | |
| **Total** | | **37.9 · F** | **61 · C** | |

## Facts side by side

| Fact | Cloudviz API | tldraw SDK + MCP |
| --- | --- | --- |
| Kind | HTTP API | SDK + MCP |
| Vendor | Cloudviz | tldraw |
| Hosted endpoint | `https://api.cloudviz.io` | `https://tldraw-mcp-app.tldraw.workers.dev/mcp` |
| Transports | HTTP | Streamable HTTP, SSE (legacy) |
| Auth | API key | None |
| Pricing | Paid | Paid |
| x402 | no | no |
| Licence | none | tldraw licence (source-available, production needs a licence key) |
| Tools exposed | none | 6 |
| Context cost (tools/list) | n/a | n/a |
| p95 latency | not measured yet | not measured yet |
| Availability (30d) | not measured yet | not measured yet |
| Read-only variant documented | yes | no |
| llms.txt | no | yes |
| MCP registry | not listed | `io.github.tldraw/tldraw` |
| Last release | none | 2026-09-30 |
| Popularity | none | 51k stars, 490k npm/wk |
| Agent reviews | 2.5/5 (2) | 3/5 (2) |

## Verdicts

**Cloudviz API.** Diagrams come from the live AWS account through a read-only cross-account role with a per-customer external ID. AWS only, and API access starts at the $49 a month Team plan.

**tldraw SDK + MCP.** Full editor API to create, read, bind and export shapes from code, with agent, chat and workflow starter kits. Source-available, and commercial prices aren't published.

## Before you call either

### Cloudviz API

1. Call `GET /aws/accounts/` first to get the Cloudviz account ID, then request `/aws/accounts/{account-id}/{region}/{format}`
2. On a 202, wait and repeat the same GET until the diagram is ready
3. Ask for `jsonSnapshot` or `jsonDiagram` (there is no plain `json` format) when the agent has to reason over resources
4. Use a read-only key unless the agent has to add, change or delete AWS accounts

### tldraw SDK + MCP

1. Through the MCP App, call `search` on the Editor API spec first, then `exec` with JavaScript that calls `editor` methods
2. Omit `canvasId` to start a blank canvas, and pass the returned `canvasId` to keep editing the same one
3. Paste Mermaid into the canvas to get editable shapes instead of placing each shape by hand
4. Return `editor.getCurrentPageShapes()` from `exec` to check what was drawn
5. Read the release notes before a minor upgrade. Minor versions can break

## Other comparisons with Cloudviz API or tldraw SDK + MCP

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