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SigmaJunction MCP server

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

read 2026-10-21

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Whose server it is
  • Registry namecom.sigmajunction/siteverified in the MCP registry

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

When we asked itchecked 2026-10-21
  • Stateanswerschecked 2026-10-21
  • Tools7
  • Server calls itselfsigmajunction
  • Server version1.1.0
  • Protocol version2025-06-18

On 2026-10-21 the server answered initialize and tools/list without a sign-in. First answer in 192 ms.

Should an agent connect itNot proven either way yet
  • Whether its tools do the product's job has not been judged yet.
  • Checked on 2 of the 7 days it takes to judge reliability.

Once connected

  • Keep approval on for send_inquiry: they delete, send or pay without saying so.
  • send_inquiry change data without a sign-in: anyone with the address can call them.

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: 2, the first on 2026-10-21
  • INITE MCP scoreafter a weeka score needs 7 daily checks: 2 so far
  • Answeredmeasuring2 of the 7 daily checks it takes to print a share
  • Median first answer693 ms
  • Space in an agent's context≈ 886 tokensthe definitions of all its tools (7), which an agent carries on every turn
  • Tool definitionsA · 100 of 100
  • Typed results7 of 7 toolsdeclared outputSchema: results come typed, read once
  • Every tool passes all six checks.

Worth a look

  • Tools that delete, send or pay without telling the client so: send_inquiry
  • Tools that change data, on a server that answers without a sign-in: send_inquiry

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 (30%), doing the product's job (25%), definitions (20%), context (10%) and use (15%). 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 offers7 tools · read 2026-10-21
  • get_company_profile

    Who SigmaJunction is: practices, engagement models, how engagements start, markets, languages and contact details.

  • list_services

    SigmaJunction's three practices and their capabilities, with links to each service page.

  • get_engagement_models

    How working with SigmaJunction is priced: dedicated team, per project with milestone billing, or an equity partnership; plus the cost guide and the free diagnosis.

  • read_page

    Any page of sigmajunction.com as Markdown, by path ("/pricing", "/de/work") or by full URL on sigmajunction.com.

  • list_articles

    SigmaJunction's articles (title, summary, date, link), newest first, optionally filtered by a search term.

  • send_inquiry

    Send a project inquiry to SigmaJunction on the user's behalf. Only use when the user has asked to contact SigmaJunction, and confirm the name, email and message with them first. A partner replies by email within one business day.

  • request_partner_checklist

    Email the user SigmaJunction's two-page checklist for choosing a software development partner (PDF). Only use when the user asked for it and gave their email address. Newsletter sign-up only if the user explicitly wants it.

How to connect

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

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

Add it

Claude Code, in a terminal

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

Add to CursorAdd to VS Code

claude.ai, ChatGPT and other clients: add https://sigmajunction.com/mcp as a custom connector in the settings.

OpenAPI spec

3 paths, read 2026-10-21. Open the spec ↗

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.