fittings-nhtsa-safety-ratings

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Chinese

NHTSA NCAP safety ratings

NHTSA NCAP 安全评级

nhtsa.safety-ratings

https://fittings.sh

. One endpoint, government and civic.

NCAP five-star crash ratings for a model year, make and model: overall, frontal, side and rollover, with recall, complaint and investigation counts.

nhtsa.safety-ratings

接口托管于

https://fittings.sh

，是一个面向政府和公众的单一接口。

获取某款车型（含年份、品牌、型号）的NCAP五星碰撞评级：包括总体评级、正面碰撞、侧面碰撞及翻滚评级，同时提供召回、投诉和调查次数数据。

The call

调用方式

GET https://fittings.sh/v1/nhtsa/safety-ratings

Field	Type	Required	Notes
`modelYear`	number	yes	Model year, e.g. 2015
`make`	string	yes	Make, e.g. Honda
`model`	string	yes	Model, e.g. Accord

Example input:

json

{
  "modelYear": 2015,
  "make": "Honda",
  "model": "Accord"
}

GET https://fittings.sh/v1/nhtsa/safety-ratings

字段	类型	是否必填	说明
`modelYear`	number	是	车型年份，例如：2015
`make`	string	是	品牌，例如：Honda
`model`	string	是	型号，例如：Accord

示例输入：

json

{
  "modelYear": 2015,
  "make": "Honda",
  "model": "Accord"
}

Cost and provenance

费用与数据源


Price	$0.004
Source	NHTSA SafetyRatings API (api.nhtsa.gov), public domain
Licence	public-domain


价格	$0.004
数据源	NHTSA SafetyRatings API (api.nhtsa.gov)，属于公共领域
许可证	公共领域

Why call it rather than answer from memory

为何调用接口而非凭记忆回答

Crash-test scores are per body style and drivetrain, not per model, so an agent comparing vehicles needs the tested variant rather than a remembered headline number.

碰撞测试分数是基于车身样式和传动系统，而非单一车型，因此对比车辆的Agent需要获取测试的具体版本数据，而非记忆中的标题性数字。

Calling it

调用指南

A skill is loaded on its own, so this document has to be enough by itself. It does not assume the general

fittings

skill is also loaded.

call.mjs

ships alongside this file; if it is missing (this document reached you without the rest of the skill), fetch it once with

curl -sO https://fittings.sh/skill/call.mjs

Free, and needs no wallet. Read the schema and see what a call would cost:

bash

curl -s https://fittings.sh/catalog/nhtsa.safety-ratings | jq

Paying. The endpoint answers

402 Payment Required

with a signed quote, you sign an authorization, and a facilitator settles it — you never send a transaction and never pay gas. Before it spends anything, the client checks its own hash against the gateway and refuses rather than sign with logic the gateway has moved past:

bash

undefined

技能需单独加载，因此本文档需独立可用，不假设已加载通用的

fittings

技能。

call.mjs

文件与本文档一同发布；若缺失（仅收到本文档而未获取技能的其余部分），可通过以下命令一次性获取：

curl -sO https://fittings.sh/skill/call.mjs

。

免费且无需钱包：查看接口Schema并了解调用费用：

bash

curl -s https://fittings.sh/catalog/nhtsa.safety-ratings | jq

付费调用：接口会返回

402 Payment Required

状态码及签名报价，您需签署授权，由服务商完成结算——您无需发起交易，也无需支付Gas费。在产生费用前，客户端会将自身哈希与网关进行校验，若网关逻辑已更新则拒绝签署：

bash

undefined

Dry run. Prints the quote and pays nothing, because no key is set.

试运行。仅打印报价，无需支付，因为未设置密钥。

node call.mjs nhtsa.safety-ratings modelYear=2015 make=Honda model=Accord

For real: a wallet holding USDC on Base, and nothing else.

正式调用：需持有Base链上USDC的钱包，无需其他资产。

export FITTINGS_PRIVATE_KEY=0x... node call.mjs nhtsa.safety-ratings modelYear=2015 make=Honda model=Accord


Spending is never a side effect of curiosity: with no `FITTINGS_PRIVATE_KEY`
the client fetches the quote and stops. `FITTINGS_MAX_PRICE` caps what it will
pay without asking, and defaults to $0.05.

**Use a throwaway wallet holding a few dollars, not a main one.** The key sits
in plaintext wherever the agent runs, and the whole cost of entry is USDC on
Base — no account, no API key, and no ETH, because the payer signs off-chain and
the facilitator broadcasts and pays the gas.

Writing your own client instead of using this one? `@x402/core` and
`@x402/evm` on npm, and the `fittings` skill records the two things that cost
real debugging time: the challenge is in a response header rather than the body,
and it must be re-signed from the exact request being retried.

If this is not the right service, `https://fittings.sh/catalog/search?q=...`
searches all of them for free.

export FITTINGS_PRIVATE_KEY=0x... node call.mjs nhtsa.safety-ratings modelYear=2015 make=Honda model=Accord


仅在明确授权时才会产生费用：未设置 `FITTINGS_PRIVATE_KEY` 时，客户端仅获取报价即停止操作。`FITTINGS_MAX_PRICE` 用于设置无需确认的最高支付限额，默认值为0.05美元。

**请使用仅持有少量资金的临时钱包，而非主钱包**。密钥以明文形式存储在Agent运行的环境中，入门仅需Base链上的USDC——无需账户、API密钥或ETH，因为付款方进行链下签名，由服务商负责广播交易并支付Gas费。

若不想使用该客户端，可自行开发：npm上提供 `@x402/core` 和 `@x402/evm` 包，`fittings` 技能记录了两个耗时调试的要点：挑战信息位于响应头而非响应体中，且必须针对重试的精确请求重新签名。

若该服务不符合需求，可通过 `https://fittings.sh/catalog/search?q=...` 免费搜索所有可用服务。