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Filtrous MCP server

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

read 2026-10-16

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Whose server it is
  • Registry namecom.filtrous/mcp-catalogverified in the MCP registry

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

When we asked itchecked 2026-10-16
  • Stateanswerschecked 2026-10-16
  • Tools4
  • Server calls itselffiltrous-mcp-catalog
  • Server version1.0.0
  • Protocol version2025-06-18

On 2026-10-16 the server answered initialize and tools/list without a sign-in. First answer in 1034 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 3 of the 7 days it takes to judge reliability.

Once connected

  • Parameters are untyped or undescribed in 1 of 4 tools: check arguments before calling.

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: 3, the first on 2026-10-19
  • INITE MCP scoreafter a weeka score needs 7 daily checks: 3 so far
  • Answeredmeasuring3 of the 7 daily checks it takes to print a share
  • Median first answer232 ms
  • Space in an agent's context≈ 664 tokensthe definitions of all its tools (4), which an agent carries on every turn
  • Tool definitionsA · 96 of 100
  • Typed results0 of 4 toolsdeclared outputSchema: results come typed, read once
  • Parameters without a description: in 1 of 4

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 (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 offers4 tools · read 2026-10-16
  • search_products

    Search the Filtrous catalog by free text and/or spec terms (e.g. '0.22 micron PES syringe filter'). Returns matching products with title, handle, SKU, product_type, tags, price, and availability. Open tool — no API key required.

  • get_product_details

    Get full details for one product by its handle: variants, SKUs, options, prices, images, and spec metafields. Open tool — no API key required.

  • get_price_and_lead_time

    Get current price, availability, and (when permitted) stock for a SKU. KEYED tool — requires a valid API key. Tier pricing and lead time are placeholders until the Acumatica sync ships.

  • request_quote

    Submit a quote request for one or more SKUs with buyer contact info. KEYED tool — requires a valid API key. Sales follows up out-of-band.

How to connect

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

{
  "mcpServers": {
    "mcp-catalog": {
      "type": "http",
      "url": "https://filtrous-mcp-catalog.filtrous.workers.dev/mcp"
    }
  }
}

Add it

Claude Code, in a terminal

claude mcp add --transport http filtrous https://filtrous-mcp-catalog.filtrous.workers.dev/mcp

Add to CursorAdd to VS Code

claude.ai, ChatGPT and other clients: add https://filtrous-mcp-catalog.filtrous.workers.dev/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.