mcp-registry/io.github.quadratichq/quadratic-mcp · v1.4.0
As of 2026-10-23 02:26 UTC, the Quadratichq Quadratic MCP server is up with a Glimind reliability score of 93/100 (grade A). Over the last 30 days it answered 100% of Glimind's liveness checks. It had 1 outage in 90 days, with a median recovery of 7 minutes.
AI access to Quadratic spreadsheets: open files, run Python/SQL, query connected databases.
Claude Code
claude mcp add --transport http quadratichq-quadratic-mcp-server https://mcp.quadratichq.com/mcp
Claude Desktop · Windsurf · Cline (mcpServers JSON)
{
"mcpServers": {
"quadratichq-quadratic-mcp-server": {
"type": "http",
"url": "https://mcp.quadratichq.com/mcp"
}
}
}
Third-party server, listed as discovered. Review its source before installing.
5 tool(s) have parameters with no type (no type/enum/anyOf/$ref).
Give every parameter a "type" (or "enum"/"anyOf"). Untyped parameters make models guess — strings for numbers, objects for arrays. How to fix →
No tool declares an outputSchema.
Declare outputSchema and return structuredContent (MCP 2025-06-18+). Agents can then parse results without guessing, and chain tools reliably. How to fix →
Paste-ready definitions with the problems above fixed. Changes marked verify need a human look. All of them as JSON: /v1/readiness/mcp-registry%2Fio.github.quadratichq%2Fquadratic-mcp/fixes
{
"name": "auth",
"description": "Authenticate the MCP session with Quadratic.\n\nActions:\n• login() — Start an OAuth device authorization flow. Returns a URL the user must open in a browser to authorize. The flow is completed by confirm_login.\n• confirm_login(device_code) — Complete an in-progress login by polling for user authorization. If the response indicates the user has not yet authorized, this action can be called again with the same device_code to continue polling. confirm_login is idempotent: if a later tool call reports",
"inputSchema": {
"type": "object",
"title": "AuthAction",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"action"
],
"properties": {
"action": {
"type": "string",
"description": "Action to perform: login, confirm_login, set_token, or logout"
},
"params": {
"description": "Parameters for the action (see tool description)",
"type": "string"
}
}
},
"annotations": {
"title": "Authenticate with Quadratic",
"readOnlyHint": false,
"openWorldHint": true,
"idempotentHint": false,
"destructiveHint": true
}
}{
"name": "files_read",
"description": "Read-only file metadata operations on Quadratic files the user has access to. No data is modified. Requires authentication.\n\nActions:\n• list_files() — List all accessible files.\n• get_file_info(file_id) — Get metadata for a single file.\n",
"inputSchema": {
"type": "object",
"title": "FilesReadAction",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"action"
],
"properties": {
"action": {
"type": "string",
"description": "Action to perform: list_files or get_file_info"
},
"params": {
"description": "Parameters for the action (see tool description)",
"type": "string"
}
}
},
"annotations": {
"title": "Read Quadratic Files",
"readOnlyHint": true,
"openWorldHint": true,
"idempotentHint": true
}
}{
"name": "files_write",
"description": "File management operations that create or modify state: create a new file, open an existing file to start an editing session, or close a session. Requires authentication.\n\nActions:\n• open_file(file_id?, file_name?) — Open a file by UUID or name and start an editing session. Returns the file's web URL.\n• create_file(file_name, team_uuid?) — Create a new blank spreadsheet. If team_uuid is omitted, the user's first team is used. Returns the new file's UUID and web URL; the file must be opened with ",
"inputSchema": {
"type": "object",
"title": "FilesWriteAction",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"action"
],
"properties": {
"action": {
"type": "string",
"description": "Action to perform: open_file, create_file, or close_file"
},
"params": {
"description": "Parameters for the action (see tool description)",
"type": "string"
}
}
},
"annotations": {
"title": "Manage Quadratic Files",
"readOnlyHint": false,
"openWorldHint": true,
"idempotentHint": false,
"destructiveHint": true
}
}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.github.quadratichq/quadratic-mcp"],"email":"[email protected]"}'Agents: watch_tool({"toolId": "mcp-registry/io.github.quadratichq/quadratic-mcp"}) over MCP.
write_data ~440 tokensread_data ~339 tokensfiles_write ~243 tokensauth ~240 tokensfiles_read ~167 tokensStatic 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:
[](https://glimind.com/server/mcp-registry%2Fio.github.quadratichq%2Fquadratic-mcp?ref=badge)
<a href="https://glimind.com/server/mcp-registry%2Fio.github.quadratichq%2Fquadratic-mcp?ref=badge"><img src="https://glimind.com/v1/readiness/badge/mcp-registry%2Fio.github.quadratichq%2Fquadratic-mcp.svg" alt="MCP agent-readiness"></a>
.. image:: https://glimind.com/v1/readiness/badge/mcp-registry%2Fio.github.quadratichq%2Fquadratic-mcp.svg :target: https://glimind.com/server/mcp-registry%2Fio.github.quadratichq%2Fquadratic-mcp?ref=badge :alt: MCP agent-readiness
Glimind records every version of this server's tool definitions in a signed, append-only transparency log. Current manifest sha256:6337df98bebe52e5…, first seen 2026-10-17, included at leaf 3749 of 49,484. Version history · verify what your client received.
Compare: most reliable security servers · most reliable files servers · most reliable data servers
Glimind tells agents whether a server is up right now and how to call it, then fails over to a live alternative when it isn't.
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"
}
}
}
As of 2026-10-23 02:26 UTC, the Quadratichq Quadratic MCP server is up with a Glimind reliability score of 93/100 (grade A). Over the last 30 days it answered 100% of Glimind's liveness checks. It had 1 outage in 90 days, with a median recovery of 7 minutes.
Quadratichq Quadratic MCP server advertises 5 tools, including auth, files_read, files_write, read_data, write_data.
Point your MCP client at this streamable-http endpoint: https://mcp.quadratichq.com/mcp
Glimind scanned all 5 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.
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.