Caisy MCP by usefulapi MCP Server

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answering

Caisy MCP by usefulapi is answering right now. Last checked 11 min ago. It exposes 4 tools. Last commit 2 Nov 2026.

Run read-only GraphQL queries and list documents and media assets in Caisy.

Uptime history 21 hours of history

21 hours agonow

100.0%

Uptime 24h

77 of 77 checks

Tools

read from the server

237 ms

Response time

average over 24h

Stars

last commit 2 Nov 2026

What changed 1

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 2 November 2026. No other catalogue keeps this.

2 Nov a tool changed version

Nothing serious here today

Today is the operative word: we check Caisy MCP by usefulapi every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 11 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add caisy --transport http https://caisy.usefulapi.io/mcp

Settings → Connectors → Add custom connector, then paste this address

https://caisy.usefulapi.io/mcp

~/.codex/config.toml

[mcp_servers.caisy]
url = "https://caisy.usefulapi.io/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "caisy": {
      "url": "https://caisy.usefulapi.io/mcp"
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "caisy": {
      "type": "http",
      "url": "https://caisy.usefulapi.io/mcp"
    }
  }
}

Available tools 4

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

caisy

caisy_list_assets

List media assets (title and source URL) of this project, with Relay pagination. Use the cursor from pageInfo.endCursor to read further.

caisy_list_documents

List document ids of one blueprint with Relay pagination (all<Blueprint>(first, after)). Returns ids only: call caisy_run_query for the fields you need. Unique blueprints have no list query: use caisy_run_query with the blueprint's single-entry field.

caisy_list_queries

List the top-level read fields of this project's Caisy schema: one all<Blueprint> list query per non-unique blueprint, one single-entry query per unique blueprint, and the asset query. Call it first to learn the blueprint API ids.

caisy_run_query

Run one read-only GraphQL query against this project's Caisy external API. Use it for any field, filter (where), sort, nested connection or localized value. Mutations and subscriptions are refused. Caisy: POST https://cloud.caisy.io/api/e/v4/<projectId>/graphql with header x-caisy-apikey.

Endpoints

URL	Transport	State	Latency	Checked
https://caisy.usefulapi.io/mcp	streamable-http	answering	108 ms	11 min ago

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Caisy MCP by usefulapi — questions

Answers built from our own checks of this server.

What can Caisy MCP by usefulapi do?

It exposes 4 tools, read directly from the server on our last check. Among them: caisy_list_assets, caisy_list_documents, caisy_list_queries, caisy_run_query. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is Caisy MCP by usefulapi working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 77 of 77 checks got a reply (100.0%), average response time 237 ms. The bar chart above shows every period we have measured.

How do I connect Caisy MCP by usefulapi?

Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does Caisy MCP by usefulapi need an API key?

No. Caisy MCP by usefulapi completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 4 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is Caisy MCP by usefulapi?

It answers our handshake in 237 ms on average, which is faster than 60% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.

Is Caisy MCP by usefulapi open source?

The code is open source: it is published under the MIT licence, written in JavaScript, 1 stars on GitHub and 1 open issue. The licence covers the code in the repository, not the hosted service at caisy.usefulapi.io, which runs on its operator's own terms.