Is the Datadef MCP server down?

mcp-registry/io.datadef/mcp · v1.1.0

healthy
Last checked 2026-10-26 18:12 UTC · handshake 1.2s

As of 2026-10-26 18:12 UTC, the Datadef MCP server is up with a Glimind reliability score of 82/100 (grade B). Over the last 30 days it answered 99.8% of Glimind's liveness checks. It had 12 outages in 90 days, with a median recovery of 7 minutes.

uptime (30d checks)
99.8%
checks observed
4,920
outages (90d)
12
tools
39

Generate, edit, and export data-architecture diagrams from your AI. Column lineage, PNG in chat.

Point your MCP client at this streamable-http endpoint: https://datadef.io/mcp

Agent-readiness: B (83/100)

B (83/100): 0 error(s), 1 warning(s) across 39 tool(s); ~14,412 tokens of tool definitions.
Scores higher than 40% of 15,768 MCP servers Glimind has audited.
Its tool list costs an agent ~14,412 tokens per session — more than 85% of servers.
76 → 83 since 2026-10-17
no tool-poisoning patterns
Schemas100
Descriptions59
Safety hints100
Token cost100
Client compatibility70
Protocol100
Reliability100
Stability20

What to fix (3)

21 parameter(s) across 17 tool(s) have no description.

Add a "description" to each parameter with its format and an example ("ISO 8601 date, e.g. 2026-10-17"). This is the commonest cause of wrong arguments on the first call. How to fix →

Tools: canvas_add_flow_arrow, canvas_add_lineage, canvas_add_nodes, canvas_add_region, canvas_add_shape and 12 more

No tool declares an outputSchema.

Declare outputSchema and return structuredContent (MCP 2025-06-18+). Agents can then parse results without guessing, and chain tools reliably. How to fix →

In the last 30 days: 0 tool(s) removed and 28 schema change(s).

Add new tools or optional parameters instead of renaming or removing; deprecate first (say so in the description) and remove later. Agents cache tool contracts. How to fix →

Get alerted

Get an email or webhook when this server's readiness drops by 10+ points, tool-poisoning text appears, or a tool breaks:

curl -X POST https://glimind.com/v1/subscriptions -H 'content-type: application/json' -d '{"tools":["mcp-registry/io.datadef/mcp"],"email":"[email protected]"}'

Agents: watch_tool({"toolId": "mcp-registry/io.datadef/mcp"}) over MCP.

Passed

Largest tool definitions

Static checks of the advertised tools/list (schema, descriptions, annotations, tool-poisoning patterns, names, size) plus observed protocol, uptime, latency and contract changes. Read-only: no tool is ever called. Weights: schema 15, docs 20, safety 15, efficiency 15, compatibility 15, protocol 5, reliability 10, stability 5. Token counts are estimates (~3.6 characters per token).

Operator? Fix these, then re-check live. Embed the readiness badge:

Markdown 
[![MCP agent-readiness](https://glimind.com/v1/readiness/badge/mcp-registry%2Fio.datadef%2Fmcp.svg)](https://glimind.com/server/mcp-registry%2Fio.datadef%2Fmcp?ref=badge)
HTML 
<a href="https://glimind.com/server/mcp-registry%2Fio.datadef%2Fmcp?ref=badge"><img src="https://glimind.com/v1/readiness/badge/mcp-registry%2Fio.datadef%2Fmcp.svg" alt="MCP agent-readiness"></a>
reStructuredText 
.. image:: https://glimind.com/v1/readiness/badge/mcp-registry%2Fio.datadef%2Fmcp.svg
   :target: https://glimind.com/server/mcp-registry%2Fio.datadef%2Fmcp?ref=badge
   :alt: MCP agent-readiness

Tool-definition log

Glimind records every version of this server's tool definitions in a signed, append-only transparency log. Current manifest sha256:9f99dbf161838ca6…, first seen 2026-10-17, included at leaf 4485 of 74,630. Version history · verify what your client received.

Tools (39)

Compare: most reliable media servers · most reliable data servers · most reliable other servers · most reliable knowledge servers · most reliable devops servers

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Claude Code

claude mcp add --transport http glimind https://glimind.com/mcp

Claude Desktop · Windsurf · Cline (mcpServers JSON)

{
  "mcpServers": {
    "glimind": {
      "type": "http",
      "url": "https://glimind.com/mcp"
    }
  }
}

FAQ

Is the Datadef MCP server down right now?

As of 2026-10-26 18:12 UTC, the Datadef MCP server is up with a Glimind reliability score of 82/100 (grade B). Over the last 30 days it answered 99.8% of Glimind's liveness checks. It had 12 outages in 90 days, with a median recovery of 7 minutes.

How many tools does Datadef MCP server provide?

Datadef MCP server advertises 39 tools, including canvas_add_flow_arrow, canvas_add_lineage, canvas_add_nodes, canvas_add_region, canvas_add_shape.

How do I install Datadef MCP server?

Point your MCP client at this streamable-http endpoint: https://datadef.io/mcp

Is the Datadef MCP server safe to connect to an AI agent?

Glimind scanned all 39 tool definitions for tool-poisoning patterns — hidden or invisible characters, instructions that override the model, concealment from the user, requests to read credential or MCP config files, conversation exfiltration and cross-tool shadowing — and found none. This checks what the server tells the model, not what its code does; review the source before granting access to sensitive data.

Operator of Datadef MCP server?

Status page: 90-day uptime, every outage and how long it lasted.

Claim this listing to get the Verified operator marker, a remediation checklist and owner analytics, or embed the live badge from any of the tool pages above. Maintainers: alerts, deploy attestation and monthly reports.

Status is an automated estimate from Glimind's liveness checks (handshake and tool listing only; no tool is ever called) and may lag or differ from your network. Glimind is not affiliated with this server or its operator. Operator? Request a correction or opt out at https://glimind.com/opt-out.

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