Skip to content
Sigma Prep logo

Sigma Prep MCP server

Which MCP servers are Sigma Prep's own, from the official registry and from asking its own domain, whether they answer, and what they offer. A program checked each of these, nobody copied them from a product page.

read 2026-10-17

← Back to Sigma Prep

Whose server it is
  • Registry nameio.sigmaprep/worksheetsverified in the MCP registry

The registry name sits under sigmaprep.io. The registry only lets a publisher use that namespace after proving control of the domain through DNS or HTTP.

When we asked itchecked 2026-10-17
  • Stateanswerschecked 2026-10-17
  • Tools2
  • Server calls itselfsigma-prep-worksheets
  • Server version0.1.0
  • Protocol version2025-06-18

On 2026-10-17 the server answered initialize and tools/list without a sign-in. First answer in 106 ms.

Should an agent connect itSkip it
  • Its tools do none of the product's use cases we checked: find which SAT math topics cost the most points; watch video solutions for each missed problem; take full-length timed SAT math practice tests.

Said by rules from the measurements above. The likely first call is a model's pick from the tool list; read its description before relying on it.

Measured dailydaily checks: 9, the first on 2026-10-19
  • INITE MCP score72 of 100answers 100 · does the job 0 · definitions 100 · context 100 · connects 100
  • What an agent can do with it0 of 3 use cases
  • Answered100% of days9 of 9 daily checks
  • Median first answer149 ms
  • Space in an agent's context≈ 478 tokensthe definitions of all its tools (2), which an agent carries on every turn
  • Tool definitionsA · 100 of 100
  • Typed results0 of 2 toolsdeclared outputSchema: results come typed, read once
  • Every tool passes all six checks.

What an agent can do with it

  • cannot · find which SAT math topics cost the most points
  • cannot · watch video solutions for each missed problem
  • cannot · take full-length timed SAT math practice tests

Each of the product's use cases, put to Jev against this server's tool list: can an agent do it with these tools?

Worth a look

None of the five warning signs in these definitions.

A program checks the server once a day: initialize and tools/list, no model. Tokens are the definitions' length at about four characters a token. The grade averages six checks of every tool's name, description, schema and annotations; it says how well the tools are described, not whether they work. The score weighs what was measured and nothing else: answering (25%), doing the product's job (25%), definitions (20%), context (10%), use (10%) and how readily a client connects (10%). A part that was not measured is left out, and a hidden instruction caps the score at 40. The state of vendors' MCP servers: method and numbers →

Tools it offers2 tools · read 2026-10-17
  • search_worksheets

    Find Sigma Prep math worksheet topics (Pre-Algebra, Algebra 1, Geometry, Algebra 2, Precalculus, Calculus) that match what the teacher or student asked for. Use this first to get the topic id, the levels it offers and its question types…

  • create_worksheet

    Make a new printable math worksheet as a PDF, with a separate copy that includes the answer key. Every call gives a fresh version of the problems. Get the topic id from search_worksheets first.

How to connect

Add the server to your MCP client config. Claude Desktop, Cursor and most other clients read this shape:

{
  "mcpServers": {
    "worksheets": {
      "type": "http",
      "url": "https://www.sigmaprep.io/api/mcp"
    }
  }
}

Add it

Claude Code, in a terminal

claude mcp add --transport http sigmaprep https://www.sigmaprep.io/api/mcp

Add to CursorAdd to VS Code

claude.ai, ChatGPT and other clients: add https://www.sigmaprep.io/api/mcp as a custom connector in the settings.

Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.