你可以提出什么

只要是你弄不到的零件，就属于这里 —— 任何领域，健康领域也在其中。

运作方式

四步之中，中间一步是我们的：我们把你所需，与能够实现它的手段联结起来。 在你批准之前，不会下单，也不会开料。

皆经衡量，绝非空言

一份请求是如何被对待的 —— 而非虚构的目录规格。

打造过程 —— 一个需求如何成为一个相配的零件

所谓相配，不是你填一份表单、再追着要一份报价；它是一场搜索，以自然搜索的方式运行 —— 众多候选者，依契合度打分，只留下最优的几个。
代码保留英文 —— 工程界的通用语言。

# a request starts with words — not a CAD file. A photo or the broken part is enough.
POST https://api.matchtopalgorithm.ai/v1/matching/parts
Authorization: MT-••••-••••-••••      — sealed under NDA before this call
Content-Type: application/json

{
  "need":     "replacement planetary gear, ~40mm, keeps an old lift alive",
  "fits":     "shaft 12mm, 18 teeth, module 1.5 — measured off the broken one",
  "have":     ["photo:front.jpg", "photo:teeth.jpg", "the broken part"],
  "drawing":  "none — please produce it",
  "field":    "industrial",
  "quantity": 2
}

202 Accepted
{ "request_id": "m_4b1c90", "status": "matching", "owner": "one engineer, named" }

"""MatchTop · the match — a part found or made, chosen the way nature chooses.
Many candidates, scored against the fit; the strongest few survive. Standard library only."""

from dataclasses import dataclass

@dataclass
class Candidate:
    source: str        # a maker, a material, a method — or a part already in the world
    fit: float         # 0..1 — how close it sits to what it has to fit
    lead_days: int
    made: bool         # True = produced to spec, False = sourced as-is


def match(need, pool, keep=3):
    """Pollination, not a catalog lookup: score every candidate, keep the fittest few."""
    scored = sorted(pool, key=lambda c: (c.fit, -c.lead_days), reverse=True)
    survivors = [c for c in scored if c.fit >= 0.80][:keep]
    if not survivors:
        return propose_to_make(need)      # nothing fits? then we make it
    return survivors                     # a human reviews these before anything is ordered

"""MatchTop · the spec — what the maker builds from, and what you keep.
A read of the match, not a black box. The drawing produced here is yours."""

import json

def spec(match) -> dict:
    return {
        "part":      match.name,
        "material":  match.material,       # e.g. hardened steel, PA12, carbon-composite
        "fit":       match.interfaces,     # the dimensions it must respect
        "make":       match.method,         # machined · printed · moulded · sourced
        "drawing":    "owned by the client",  # never reused, never resold
        "approval":   "required before production"
    }
    # handed to you to read and approve — nothing is cut until you say yes

无法被复制的东西

为什么这与即时报价门户截然不同。

一台报价引擎无法看着一张损坏齿轮的照片就知道它原本是什么。一份目录 无法收录一个从未被制造过的零件。所以这里没有价目表：我们看这个零件 必须做什么，我们为它相配，再按我们实测的结果报价 —— 只报一次，只报给你。

受托保密

在交换只言片语之前，你的请求与设计将如何被守护。这一点没有商量余地。