MCP.Market

Harness Atlas MCP server

online · 100% uptime
by pawel-kowalczyk·io.github.pawel-kowalczyk/harness-atlas·v0.2.1
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Search 500+ wire-harness & cable-assembly manufacturers by country, industry, and capability.

B83/100grade B
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Safety scan
B83/100

full report

Adoption
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0 stars

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If you have run it, two minutes of your experience saves the next person an afternoon.

Harness Atlas tools (2)

write = sends, deletes, buys or posts
  • find_alternativeFree

    Cross-reference a wire-harness component part number (connectors, terminals, seals, cable protection) against the XrefBase equivalence graph. Results are grouped by how strong the relationship is, and the groups are not interchangeable: `verified_replacements` are corroborated drop-in or manufacturer-superseded parts; `functional_equivalents` do the same job but need engineering review; `same_series` and `variants` are the same family in a different configuration and are NOT substitutes; `mates_with` is the counterpart connector the part plugs into, which is specifically not a substitute for it. Every claim carries a confidence level and, where one exists, a public source URL.

  • find_manufacturerFree

    Search the Harness Atlas directory of wire-harness and cable-assembly manufacturers. Filter by country, industry served, process capability, or name. Returns listed manufacturer profiles (location, website, industries, capabilities).

Public scan report

scanner v0.1.10 · 2026-10-31 · same rubric, same numbers if you re-run it

no findings
  • –Code scanremote-only server, no package to scann/a
  • Live reliabilityremote reachable in 2536ms17/20
  • Tool poisoning2 tool descriptions checked15/15
  • Auth qualityopen endpoint, read-only tools10/15
  • Maintenancelast push 68 days ago12/15
  • Maintainer identityregistry namespace matches repository owner; GitHub account older than a year8/10
Overall 83/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

How Harness Atlas compares

Against every graded Web search MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score
83/100
higher than 70% of 3,470 Web search servers
Tools
2
the typical Web search server has 5
Tools that change things
0%
typical: 0%. Fewer write tools means less an agent can break
Uptime
100%
of our recent checks; the typical remote Web search server answers 100%
Response time
409 ms
faster than 38% of 2,238 Web search servers

What its tools let an agent do: 2 read

Install Harness Atlas in Claude Code, Cursor or VS Code

claude mcp add --transport http harness-atlas https://harnessatlas.com/api/mcp
Add to Cursor

What the publisher says

From the Harness Atlas repository's README, as published. We do not edit it. Read it on GitHub

Harness Atlas — MCP server

A remote Model Context Protocol server for sourcing wire harnesses and cable assemblies. It answers two questions an agent cannot answer from general web knowledge: who manufactures this, and what part can replace this one.

Hosted, public, no API key, nothing to install.

https://harnessatlas.com/api/mcp

Listed in the official MCP registry as io.github.pawel-kowalczyk/harness-atlas.

The endpoint moved to harnessatlas.com on 2026-08-24 (manifest v0.2.0). The previous Supabase

URL still works and is not being retired, so existing clients keep functioning — but this is the

address to use.

Why it exists

Wire-harness sourcing data is scattered across trade directories, PDF catalogues and manufacturer sites that general-purpose models summarise badly and cite unreliably. Harness Atlas is a structured directory of the sector with per-field provenance, exposed over MCP so an agent can query it directly instead of guessing.

Tools

find_manufacturer

Search the directory of wire-harness and cable-assembly manufacturers. All parameters optional.

Returns name, HQ country and city, website, industries served, plant count, capabilities and a profile URL.

find_alternative

Cross-reference a component part number — connectors, terminals, seals, cable protection — against the XrefBase equivalence graph. part_number is required; manufacturer is optional and disambiguates an MPN that exists under several makers (aliases such as TE and H+S are accepted). Punctuation and case are normalised, so 1-967616-1 and 19676161 both match.

Results are grouped by relationship strength, and the groups are not interchangeable:

Every claim carries a confidence level and, where one exists, a public source URL. The grouping is the point: a tool that returns one flat list of "alternatives" invites an agent to propose a mating connector as a replacement part.

Connecting

Claude Code

claude mcp add --transport http harness-atlas https://harnessatlas.com/api/mcp

Claude Desktop / any client taking a remote MCP URL — add to your MCP config:

{
  "mcpServers": {
    "harness-atlas": {
      "type": "streamable-http",
      "url": "https://harnessatlas.com/api/mcp"
    }
  }
}

Straight JSON-RPC, to try it without a client:

curl -s -X POST https://harnessatlas.com/api/mcp \
  -H 'Content-Type: application/json' \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{
        "name":"find_manufacturer",
        "arguments":{"country":"Poland","industry":"automotive","limit":3}}}'

The data, honestly

Shortened. The full README is on GitHub.

Nothing above is checked by us. What we check is on the safety report.

Grade history

  • 2026-10-31downgradeA → Bscore 83

Harness Atlas: common questions

Is Harness Atlas MCP server safe?
Mostly: it is graded B (83/100). Read the Harness Atlas safety report
How do I install Harness Atlas?
It runs remotely at harnessatlas.com. Add it to Claude Code, Cursor, VS Code or Claude Desktop with the snippets above, or call it through the mcp.market gateway without installing anything.
Does Harness Atlas need an API key?
Not as far as the registry entry and our scan can tell: no credentials are declared or required.
Is Harness Atlas maintained?
The last commit was 72 days ago (2026-08-24). The latest release is v0.2.1.
Is Harness Atlas up?
100% of our last 28 checks got an answer. We check remote servers about four times a day.
What can I use instead of Harness Atlas?
Servers from other publishers that do the same job: The Company Atlas MCP server.
How does Harness Atlas compare with other Web search MCP servers?
safety score 83/100 (higher than 70% of 3,470 Web search servers); tools 2 (the typical Web search server has 5); tools that change things 0% (typical: 0%. Fewer write tools means less an agent can break). Full comparison.

Alternatives to Harness Atlas

Same job from other publishers: the closest match first, then the best rated.

  • The Company Atlas
    Global customs trade data and company registry. Search shipments, and look up legal entities.
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