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OpenFab

by yyphilo · remote · no sign-in to list tools · v0.2.0 · published by GitHub user yyphilo

Instant parametric cost estimates for custom manufacturing: CNC, molding, sheet metal, 3DP, PCB.

Changes · 4
CompareRegistry entry

7 tools: 4 change things and 3 only read.

Scanned Oct 21, 2026

No check matched anything in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http openfab https://openfab-22100483453.us-central1.run.app/mcp/

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

7 tools

Changes things 4Claude Code: ask
  • dfm_feedbackRule-based design-for-manufacturability feedback for a part specification.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    Rule-based design-for-manufacturability feedback for a part specification.
  • estimate_bomEstimate costs for a multi-part bill of materials in one call.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    Estimate costs for a multi-part bill of materials in one call. Each part: {process, quantity, material?, bounding_box_mm?, tolerance_mm?, finish?}. Returns per-line estimates, a BOM total, and the longest lead time. Indicative and non-binding. Max 50 lines.
  • refine_quoteRefine a previous estimate (change quantity, material, tolerance, finish) by passing its quote_token.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    Refine a previous estimate (change quantity, material, tolerance, finish) by passing its quote_token.
  • request_quoteGet an instant cost estimate for a custom manufactured part.No findings

    Why it is in this group

    • The name "request_quote" says "request": a word for a change.
    Description, as the server wrote it
    Get an instant cost estimate for a custom manufactured part. Returns unit price, total, lead time, and assumptions. Indicative and non-binding.
Only reads 3Claude Code: allow
  • compare_processesCompare cost and lead time for one part across manufacturing processes.No findings

    Why it is in this group

    • The name "compare_processes" says "compare": a word for reading.
    Description, as the server wrote it
    Compare cost and lead time for one part across manufacturing processes. Provide 2-8 process names and a quantity; returns per-process estimates sorted by total cost, plus a lowest-cost / shortest-lead-time note. Indicative and non-binding.
  • discover_capabilitiesList supported manufacturing processes, materials, and the fields an estimate accepts.No findings

    Why it is in this group

    • The description's first verb is "list": a word for reading.
    Description, as the server wrote it
    List supported manufacturing processes, materials, and the fields an estimate accepts.
  • get_lead_timeEstimated production lead time in days, by process and quantity.No findings

    Why it is in this group

    • The name "get_lead_time" says "get": a word for reading.
    Description, as the server wrote it
    Estimated production lead time in days, by process and quantity.

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Install

Pinned to version 0.2.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http openfab https://openfab-22100483453.us-central1.run.app/mcp/

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json
{
  "permissions": {
    "allow": [
      "mcp__openfab__discover_capabilities",
      "mcp__openfab__get_lead_time",
      "mcp__openfab__compare_processes"
    ],
    "ask": [
      "mcp__openfab__request_quote",
      "mcp__openfab__refine_quote",
      "mcp__openfab__dfm_feedback",
      "mcp__openfab__estimate_bom"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as openfab. Review it before you use it.