ACJ Labs MCP server

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

read 2026-10-20

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Whose server it is

Registry namecom.acjlabs/catalog-normalizerverified in the MCP registry

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

When we asked itchecked 2026-10-20

Stateanswerschecked 2026-10-20
Tools1
Server calls itselfcatalog-attribute-normalizer
Server version0.2.0
Protocol version2025-06-18

On 2026-10-20 the server answered initialize and tools/list without a sign-in. First answer in 1639 ms.

Measured dailydaily checks: 1, the first on 2026-10-20

Answeredmeasuring1 of the 7 daily checks it takes to print a share
Median first answer65 ms
Space in an agent's context≈ 541 tokensthe definitions of all its tools (1), which an agent carries on every turn
Tool definitionsB · 83 of 100

Parameters without a description: in 1 of 1

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 state of vendors' MCP servers: method and numbers →

Tools it offers1 tools · read 2026-10-20

normalize_catalog
Normalizes a batch of catalog products (attribute canonicalization/extraction + category-path mapping into the requested target taxonomies: google, shopify, amazon). Returns one result per input product, same order: a NormalizedProduct on…

How to connect

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

{
  "mcpServers": {
    "catalog-normalizer": {
      "type": "http",
      "url": "https://catalog-normalizer.acjlabs.com/mcp"
    }
  }
}

Other servers listed as ACJ Labs's

com.acjlabs/receipt-extractionanswers, 1 toolsverified in the MCP registry
com.acjlabs/x402-listing-monitoranswers, 1 toolsverified in the MCP registry

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.