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ReplacementHQ MCP server

Which MCP servers are ReplacementHQ'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 2026-11-02

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Whose server it is
  • Registry nameuk.co.replacementhq/printer-parts-registerverified in the MCP registry

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

When we asked itchecked 2026-11-02
  • Stateanswerschecked 2026-11-02
  • Tools1
  • Server calls itselfreplacementhq-data
  • Server version2026-11-02
  • Protocol version2025-06-18

On 2026-11-02 the server answered initialize and tools/list without a sign-in. First answer in 184 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

  • For "Find which replacement parts fit a Bambu Lab A1", the likely first call is lookup_printer_parts.

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 2026-11-02
  • 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 answer177 ms
  • Space in an agent's context≈ 138 tokensthe definitions of all its tools (1), which an agent carries on every turn
  • Tool definitionsB · 83 of 100
  • Typed results0 of 1 toolsdeclared outputSchema: results come typed, read once
  • Not saying whether it only reads or can destroy: 1 of 1

What an agent can do with it

  • can do · Find which replacement parts fit a Bambu Lab A1
  • not sure · Check whether a printer can handle TPU filament
  • not sure · Look up printer limits before printing with PETG

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 offers1 tools · read 2026-11-02
  • lookup_printer_parts

    Look up ReplacementHQ's register of 3D printer materials and wear parts (Bambu Lab and Prusa). Each answer quotes the maker's own page with its address and the date it was read. Checking is not physical testing.

How to connect

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

{
  "mcpServers": {
    "printer-parts-register": {
      "type": "http",
      "url": "https://replacementhq.co.uk/mcp"
    }
  }
}

Add it

Claude Code, in a terminal

claude mcp add --transport http replacementhq https://replacementhq.co.uk/mcp

Add to CursorAdd to VS Code

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

OpenAPI spec

1 paths, read 2026-11-02. 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.