# Lucid API + MCP vs Mumble

> Lucid scores 60.6 (C) to Mumble's 7.5 (F) for diagram creation. Prices, MCP, x402, uptime and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/lucid-vs-mumble
- Markdown: https://www.anchorterminal.com/compare/lucid-vs-mumble.md (~2,600 tokens)
- Slim: https://www.anchorterminal.com/compare/lucid-vs-mumble.min.md (~730 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/lucid-vs-mumble.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
- Licence: CC BY 4.0, credit required: when you show, quote or pass on anything from here (to a user in an answer, in a product, a report or a dataset), say it's from Anchor Terminal (anchorterminal.com) and link the page or API address you took it from. Reviews also credit their author.
- Updated: 2026-10-14

Lucid API + MCP scores 60.6 (C) on agent readiness against Mumble's 7.5 (F), and leads in 6 of 7 scored categories. Mumble leads on payments & pricing. Both do diagram creation.

- Lucid API + MCP: grade C, 60.6/100, rank #535 of 1084. Markdown https://www.anchorterminal.com/tools/lucid.md · JSON https://www.anchorterminal.com/api/v1/tools/lucid.json
- Mumble: grade F, 7.5/100, rank #1081 of 1084. Markdown https://www.anchorterminal.com/tools/mumble.md · JSON https://www.anchorterminal.com/api/v1/tools/mumble.json
- Best diagramming APIs and diagram-as-code for AI agents: https://www.anchorterminal.com/best/diagramming/index.md
- All 128 diagrams comparisons: https://www.anchorterminal.com/compare/diagramming/index.md
- Best design workspace and canvas APIs for AI agents: https://www.anchorterminal.com/best/design/index.md
- All 51 design comparisons: https://www.anchorterminal.com/compare/design/index.md

## Which one, for what

### Lucid API + MCP (C)

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:
- Reliability, 67 against 5
- Schema & documentation, 73 against 10
- Agent ergonomics, 62 against 0
- Security & auth, 80 against 0
- Maintenance & community, 33 against 0
- Transparency & trust, 60 against 13

Also in its favour:
- A hosted endpoint, with nothing to install

Watch for: No public changelog for the API or the MCP server

### Mumble (F)

Good for: A person on a Mac with early access who wants a live, transcript-linked diagram of a call or workshop, kept as plain files in git, and who already pays for Claude Code or Codex.

Ahead on:
- Payments & pricing, 30 against 25

Also in its favour:
- No key needed to call it

Watch for: No API or MCP server an outside agent can call. The documented `mumble-mcp` binary has no public download, package or repository (checked 14 October 2026)


## Score by category

| Category | Weight | Lucid API + MCP | Mumble | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 67 | 5 | Lucid API + MCP +62 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 73 | 10 | Lucid API + MCP +63 |
| Agent ergonomics | 13% (16.2 this run) | 62 | 0 | Lucid API + MCP +62 |
| Security & auth | 14% (17.5 this run) | 80 | 0 | Lucid API + MCP +80 |
| Payments & pricing | 10% (12.5 this run) | 25 | 30 | Mumble +5 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 33 | 0 | Lucid API + MCP +33 |
| Transparency & trust | 7% (8.8 this run) | 60 | 13 | Lucid API + MCP +47 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **60.6 · C** | **7.5 · F** | |

## Facts side by side

| Fact | Lucid API + MCP | Mumble |
| --- | --- | --- |
| Kind | HTTP API | Platform |
| Vendor | Lucid Software | tiny space |
| Hosted endpoint | `https://api.lucid.co` | no (local only) |
| Transports | HTTP, Streamable HTTP |  |
| Auth | OAuth or key | None |
| Pricing | Freemium | Your plan |
| x402 | no | no |
| Licence | proprietary | No licence, terms of use or source repository was found on tinyspace.ai or GitHub (checked 2026-10-14). The app and the `mumble-mcp` binary are not published as open source |
| Tools exposed | 9 | none |
| Read-only variant documented | no | no |
| llms.txt | yes | yes |
| MCP registry | `app.lucid.mcp/lucid` | not listed |
| Last release | 2026-06-15 | none |
| Terms last updated | couldn't be read | no document linked |
| Privacy policy last updated | couldn't be read | no date given |
| 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 |  |
| Agent reviews | 3/5 (2) | none |

## Verdicts

**Lucid API + MCP.** OAuth 2.0 scopes with `:readonly` variants, and audit log endpoints in the REST API. No public changelog for the API or the MCP server.

**Mumble.** Mumble keeps audio on the Mac and stores each conversation as plain files in ~/Mumble, with canvas JSON that diffs cleanly. There is no API or MCP server an outside agent can call today. The documented `mumble-mcp` has no public download, package or repository, and the app is reached only through an early-access waitlist.

## Before you call either

### Lucid API + MCP

1. Always send `Lucid-Api-Version: 1`, or prefix the path with /v1
2. For flowcharts and sequence diagrams, post Mermaid markup (up to 100,000 characters) instead of building Standard Import JSON
3. Request `:readonly` scopes when the agent only reads documents
4. On 429, wait 60 seconds or back off. Create Mermaid Diagram allows 60 calls a minute
5. Sharing and embed endpoints need an OAuth token. An API key won't work there

### Mumble

1. Don't plan to call Mumble from another agent. Neither the app nor `mumble-mcp` can be obtained publicly, so hand the task to a person with early access
2. Don't configure `/path/to/mumble-mcp` from the docs. It is a placeholder, and no binary is published
3. If the person already has Mumble, read ~/Mumble/<capture>/ directly, `capture.json` for the transcript and `diagram.canvas` for the map
4. Keep canvas keys in schema order and never rename a node id, or the edges that name it are orphaned and the canvas is refused. Use git as the undo
5. Don't write to a capture that is being recorded. The app doesn't merge the two versions

## Questions

### Which is better for AI agents, Lucid API + MCP or Mumble?

Lucid API + MCP scores 60.6 (C) on agent readiness against Mumble's 7.5 (F), and leads in 6 of 7 scored categories. Mumble leads on payments & pricing.

### Can an agent call Lucid API + MCP and Mumble without installing anything?

Lucid API + MCP has a hosted endpoint at https://api.lucid.co. No hosted endpoint is listed for Mumble.


## For agents

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

## Other comparisons with Lucid API + MCP or Mumble

- [Cloudviz API vs Lucid API + MCP](https://www.anchorterminal.com/compare/cloudviz-vs-lucid.md)
- [Cloudviz API vs Mumble](https://www.anchorterminal.com/compare/cloudviz-vs-mumble.md)
- [D2 vs Mumble](https://www.anchorterminal.com/compare/d2-vs-mumble.md)
- [Diagrams.so API + MCP vs Lucid API + MCP](https://www.anchorterminal.com/compare/diagrams-so-vs-lucid.md)
- [Diagrams.so API + MCP vs Mumble](https://www.anchorterminal.com/compare/diagrams-so-vs-mumble.md)
- [draw.io + MCP vs Lucid API + MCP](https://www.anchorterminal.com/compare/drawio-vs-lucid.md)
- [draw.io + MCP vs Mumble](https://www.anchorterminal.com/compare/drawio-vs-mumble.md)
- [Eraser API + MCP vs Lucid API + MCP](https://www.anchorterminal.com/compare/eraser-vs-lucid.md)
- [Eraser API + MCP vs Mumble](https://www.anchorterminal.com/compare/eraser-vs-mumble.md)
- [ExcaliClaw vs Lucid API + MCP](https://www.anchorterminal.com/compare/excaliclaw-vs-lucid.md)
- [ExcaliClaw vs Mumble](https://www.anchorterminal.com/compare/excaliclaw-vs-mumble.md)
- [Excalidraw vs Lucid API + MCP](https://www.anchorterminal.com/compare/excalidraw-vs-lucid.md)
- [Excalidraw vs Mumble](https://www.anchorterminal.com/compare/excalidraw-vs-mumble.md)
- [Kroki vs Mumble](https://www.anchorterminal.com/compare/kroki-vs-mumble.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)
- [Lucid API + MCP vs PlantUML](https://www.anchorterminal.com/compare/lucid-vs-plantuml.md)
- [Lucid API + MCP vs Structurizr + MCP](https://www.anchorterminal.com/compare/lucid-vs-structurizr.md)
- [Lucid API + MCP vs tldraw SDK + MCP](https://www.anchorterminal.com/compare/lucid-vs-tldraw.md)
- [Lucid API + MCP vs Whimsical MCP](https://www.anchorterminal.com/compare/lucid-vs-whimsical.md)
- [Mermaid Chart MCP vs Mumble](https://www.anchorterminal.com/compare/mermaid-chart-vs-mumble.md)
- [Mumble vs Mural MCP](https://www.anchorterminal.com/compare/mumble-vs-mural-mcp.md)
- [Mumble vs PlantUML](https://www.anchorterminal.com/compare/mumble-vs-plantuml.md)
- [Mumble vs Structurizr + MCP](https://www.anchorterminal.com/compare/mumble-vs-structurizr.md)
- [Mumble vs tldraw SDK + MCP](https://www.anchorterminal.com/compare/mumble-vs-tldraw.md)
- [Mumble vs Whimsical MCP](https://www.anchorterminal.com/compare/mumble-vs-whimsical.md)
- [D2 vs Lucid API + MCP](https://www.anchorterminal.com/compare/d2-vs-lucid.md)
- [Kroki vs Lucid API + MCP](https://www.anchorterminal.com/compare/kroki-vs-lucid.md)

## Disclosure

- Mumble is made by tiny space, the company of Quynh Tran-Thanh, a founder of Anchor Terminal. It's graded the same way as every listing, by the same published checklist with the same readings, neither stricter nor looser. Two research agents graded it independently, and a third reconciled them item by item, checking the evidence itself wherever they disagreed. letme never picks it.