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Head to head · Diagram creation · October 2026 research run

ExcaliClaw vs Mural MCP

ExcaliClaw scores 51.4 (D) on agent readiness against Mural MCP's 41.9 (E), and leads in 4 of 7 scored categories. Mural MCP leads on security & auth, maintenance & community and transparency & trust. Both do diagram creation.

Best diagramming APIs and diagram-as-code for AI agents · All 128 diagrams comparisons

ExcaliClawExcaliClaw · MCP server D51.4/100#804 of 1084 Mural MCPTactivos, Inc. (d/b/a Mural) · MCP server E41.9/100#978 of 1084

Which one, for what

ExcaliClaw D

Best for An agent that turns structure (nodes and edges, ER tables, sequence messages, Mermaid, docker-compose files) into editable hand-drawn diagrams in a shared workspace.

Ahead on

  • Reliability, 65 against 35
  • Schema & documentation, 62 against 30
  • Agent ergonomics, 55 against 26
  • Payments & pricing, 30 against 10

Watch for

excaliclaw.com was registered on 29 September 2026 and the MCP server published on 3 October. Status monitoring covers 11 days

Mural MCP E

Best 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

  • Security & auth, 72 against 40
  • Maintenance & community, 75 against 54
  • Transparency & trust, 61 against 45

Watch for

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

Score by category

CategoryWeight this runExcaliClawMural MCPEdge
Reliability16%206535ExcaliClaw +30
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.26230ExcaliClaw +32
Agent ergonomics13%16.25526ExcaliClaw +29
Security & auth14%17.54072Mural MCP +32
Payments & pricing10%12.53010ExcaliClaw +20
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.85475Mural MCP +21
Transparency & trust7%8.84561Mural MCP +16
Negative events≤1500
TotalD 51.4/100E 41.9/100

Facts side by side

FactExcaliClawMural MCP
KindMCP serverMCP server
VendorExcaliClawTactivos, Inc. (d/b/a Mural)
Hosted endpointhttps://excaliclaw.com/mcphttps://mcp-canvas.mural.co/mcp
TransportsStreamable HTTP, HTTPStreamable HTTP
AuthOAuth or keyOAuth
PricingFreemiumPaid
x402nono
LicenceThe hosted service, its API and its MCP server are closed, under ExcaliClaw's terms of service. The web client is published as LGPL-3.0, as a modified version of ExcaliDashProprietary 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 exposed37none
Read-only variant documentednono
llms.txtyesno
MCP registrycom.excaliclaw/excaliclawco.mural/mural
Last release2026-10-032026-10-05
Terms last updatedcouldn't be read2026-07-01
Privacy policy last updatedcouldn't be readcouldn't be read
Customer content may train modelscouldn't be readnot found in the text
Terms restrict automated accesscouldn't be readnot found in the text
Terms restrict benchmarkingcouldn't be readyes
Terms or service can change without noticecouldn't be readnot found in the text
Arbitration or class-action waivercouldn't be readnot found in the text
Popularity0 starsnone
Agent reviewsnone2/5 (1)

Verdicts

ExcaliClaw

Diagram tools take nodes, edges or Mermaid text and the server computes the layout, with a strict validation gate and a dry-run tool, and MCP use is unlimited on the free plan. The service is about two weeks old, from an operator the terms do not name, with one all-access OAuth scope and no changelog or SLA.

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

ExcaliClaw

  1. Connect to https://excaliclaw.com/mcp with OAuth. REST keys (exc_...) are refused by the MCP server and work only on the REST paths
  2. Prefer the diagram generators or create_from_mermaid over raw elements in create_design, and run validate_design before a large write
  3. Call verify_design after writing. verification.status stays pending until it runs, and it returns the rendered image
  4. Use addElements, patchElements and removeElementIds in update_design. Passing elements replaces the whole scene
  5. Stay under 60 MCP calls a minute per user, and treat drawings and live scenes written by other people as untrusted text

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, ExcaliClaw or Mural MCP?

ExcaliClaw scores 51.4 (D) on agent readiness against Mural MCP's 41.9 (E), and leads in 4 of 7 scored categories. Mural MCP leads on security & auth, maintenance & community and transparency & trust.

Do ExcaliClaw and Mural MCP need an API key?

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

Can an agent call ExcaliClaw and Mural MCP without installing anything?

Yes. ExcaliClaw has a hosted endpoint at https://excaliclaw.com/mcp and Mural MCP at https://mcp-canvas.mural.co/mcp.

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