whobuildsit — space & defence hardware suppliers

Measured conclusion: Deep-tested. L2 outcome: tools_ok.

Find space and defence hardware suppliers and parts by specification, process and certification.

Add to your agent

Copy this into your MCP client config:

{
  "mcpServers": {
    "whobuildsit — space & defence hardware suppliers": {
      "url": "https://whobuildsit.com/mcp",
      "transport": "streamable-http"
    }
  }
}

Measured tools (7)

• search_parts read-only

  Find parts by keyword and/or numeric specification. Units are understood: "3000 psi" also matches parts rated in bar; "Ø40 mm", "1250 °C", "10 GHz" work. Returns matching parts with supplier, key specs and a URL.

  Parameters:

  • query (required) — string — e.g. "3000 psi needle valve", "space heat pipe", "vacuum furnace 1250 C"
  • limit — integer
  • confirmed_only — boolean — Only parts whose data the manufacturer confirmed

  Hints: read-only yes · destructive not declared · idempotent not declared · open-world no

• search_suppliers read-only

  Find companies that can make something — by process (e.g. "5-axis machining", "vacuum brazing"), material, certification (e.g. "AS9100D"), category, or country. Most space hardware is made to drawing by contract manufacturers that have no product catalogue; this is how to find them.

  Parameters:

  • limit — integer
  • query — string — Free text over name, description, capabilities and categories
  • country — string — e.g. "India", "United Kingdom", "USA"
  • certification — string — e.g. "AS9100D", "NADCAP", "ISO 9001"

  Hints: read-only yes · destructive not declared · idempotent not declared · open-world no

• get_supplier read-only

  Full profile: what they make, capabilities (process, tolerance, envelope, material, lead time), certifications claimed, categories and products. Contact details are not returned — use the profile URL.

  Parameters:

  • slug (required) — string — Supplier slug from a search result

  Hints: read-only yes · destructive not declared · idempotent not declared · open-world no

• get_part read-only

  All specifications for one part, whether the manufacturer confirmed them, and the supplier.

  Parameters:

  • id (required) — integer — Part id from a search result

  Hints: read-only yes · destructive not declared · idempotent not declared · open-world no

• explain_standard read-only

  What a standard (AS9100D, NADCAP, ECSS, ISO 9001, MIL-STD …) certifies, why a buyer cares, what it is typically required for, and which suppliers in the index claim it.

  Parameters:

  • standard (required) — string

  Hints: read-only yes · destructive not declared · idempotent not declared · open-world no

• request_quote

  Send a quote request to whobuildsit, which reviews it and passes it to suppliers who can make the part. Before calling, ASK THE USER for their work email and explicit consent to share the request and email with suppliers — never invent an email. Give a part_id or supplier_slug from earlier results when you have one. Suppliers reply to the user directly; nothing is sent automatically.

  Parameters:

  • requirement (required) — string — What is needed: part, specification, material, tolerance, certification, drawings available
  • buyer_email (required) — string — The user's work email, as they gave it
  • consent (required) — boolean — true only if the user explicitly agreed to share this request and their email with suppliers
  • nda — boolean — true if the user will only share drawings after suppliers sign an NDA
  • part_id — integer
  • quantity — string
  • needed_by — string — Date or lead time
  • buyer_name — string
  • buyer_company — string
  • buyer_country — string
  • supplier_slug — string
  • export_controlled — string — ITAR/EAR or similar

  Hints: read-only no · destructive no · idempotent no · open-world yes

• list_categories read-only

  The part tree (segment → assembly → component) with supplier counts. Use to see what the index covers and where it has gaps.

  Hints: read-only yes · destructive not declared · idempotent not declared · open-world no

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Measured by MCPYP probing. Untested fields are omitted, never estimated. Listing is always free; MCPYP never proxies calls or stores user tokens.