Every API here is available over the APIs.io API and to AI agents over MCP.
One button, every client — Claude, Cursor, VS Code and the rest.
https://apis.io/mcp
find_apisBrowse and filter every API in the catalog.get_api_artifactsOne API's artifacts, grouped by type.get_openapiThe primary OpenAPI for this API.find_similar_apisAPIs that look like this one.apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.resolveTurn a domain, URL or GitHub org into the provider it belongs to.find_cohortsEvery scored population of providers in the catalog.curl "https://apis.io/api/v1/apis/51offer-nglancorrect-api"curl "https://apis.io/api/v1/apis?limit=25"Discovery needs no key. Ratings and market analysis are Pro.
Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.
A second provider on the same verified email joins the account you already have.
openapi: 3.2.0
info:
title: 51offer Horizon Site Ng Lan Correct API
version: '1.0'
summary: 51offer official-site (www.51offer.com) JSON API surface
description: Machine-readable description of the public JSON API surface of 51offer's official study-abroad site (www.51offer.com).
contact:
name: 51offer
email: woodrow.w@51offer.com
url: https://www.51offer.com/
x-provenance:
converted-from: Swagger 1.2
source: https://www.51offer.com/api-docs
fetched: '2026-09-05'
servers:
- url: https://www.51offer.com
description: '51offer official site API host. Verified live 2026-09-05: GET /ngGpaCalc/constants returned HTTP 200 application/json.'
- url: https://m.51offer.com
description: 51offer mobile-site host. Serves the same Swagger 1.2 documents at /api-docs (HTTP 200, application/json, 2026-09-05).
tags:
- name: ngLanCorrect
description: 语培口语批改
paths:
/ngLanCorrect/coupon/today:
get:
operationId: getTodayCouponInfo
tags:
- ngLanCorrect
summary: 获取今日优惠券详情
responses:
'200':
description: OK
content:
application/json:
schema:
$ref: '#/components/schemas/HttpResult'
'401':
description: Unauthorized
'403':
description: Forbidden
'404':
description: Not Found
x-swagger-1-2-source: https://www.51offer.com/api-docs/default/nglancorrect
/ngLanCorrect/couponCount/my:
get:
operationId: queryMyCouponCount
tags:
- ngLanCorrect
summary: 获取我的批改券数量
parameters:
- name: uid
in: query
required: true
schema:
type: integer
format: int32
- name: token
in: query
required: true
schema:
type: string
description: salt
responses:
'200':
description: OK
content:
application/json:
schema:
$ref: '#/components/schemas/HttpResult'
'401':
description: Unauthorized
'403':
description: Forbidden
'404':
description: Not Found
x-swagger-1-2-source: https://www.51offer.com/api-docs/default/nglancorrect
/ngLanCorrect/receiveShareCoupon:
get:
operationId: receiveShareCoupon
tags:
- ngLanCorrect
summary: 领取分享批改券
parameters:
- name: uid
in: query
required: true
schema:
type: integer
format: int32
- name: token
in: query
required: true
schema:
type: string
description: salt
- name: fromUid
in: query
required: true
schema:
type: integer
format: int32
responses:
'200':
description: OK
content:
application/json:
schema:
$ref: '#/components/schemas/HttpResult'
'401':
description: Unauthorized
'403':
description: Forbidden
'404':
description: Not Found
x-swagger-1-2-source: https://www.51offer.com/api-docs/default/nglancorrect
/ngLanCorrect/robCoupon:
get:
operationId: robTodayFreeCoupon
tags:
- ngLanCorrect
summary: 领取今日免费批改券
parameters:
- name: uid
in: query
required: true
schema:
type: integer
format: int32
- name: token
in: query
required: true
schema:
type: string
description: salt
responses:
'200':
description: OK
content:
application/json:
schema:
$ref: '#/components/schemas/HttpResult'
'401':
description: Unauthorized
'403':
description: Forbidden
'404':
description: Not Found
x-swagger-1-2-source: https://www.51offer.com/api-docs/default/nglancorrect
/ngLanCorrect/saveRecord:
get:
operationId: saveRecord
tags:
- ngLanCorrect
summary: 提交录音
parameters:
- name: uid
in: query
required: true
schema:
type: integer
format: int32
- name: token
in: query
required: true
schema:
type: string
description: salt
- name: subjectId
in: query
required: true
schema:
type: integer
format: int32
- name: recordId
in: query
required: true
schema:
type: integer
format: int32
- name: recordUrl
in: query
required: true
schema:
type: string
- name: recordTime
in: query
required: true
schema:
type: integer
format: int32
- name: formId
in: query
required: false
schema:
type: string
- name: couponCode
in: query
required: true
schema:
type: string
responses:
'200':
description: OK
content:
application/json:
schema:
$ref: '#/components/schemas/HttpResult'
'401':
description: Unauthorized
'403':
description: Forbidden
'404':
description: Not Found
x-swagger-1-2-source: https://www.51offer.com/api-docs/default/nglancorrect
/ngLanCorrect/setRemind:
get:
operationId: setRemind
tags:
- ngLanCorrect
summary: 设置抢券提醒
parameters:
- name: uid
in: query
required: true
schema:
type: integer
format: int32
- name: token
in: query
required: true
schema:
type: string
description: salt
- name: formId
in: query
required: true
schema:
type: string
responses:
'200':
description: OK
content:
application/json:
schema:
$ref: '#/components/schemas/HttpResult'
'401':
description: Unauthorized
'403':
description: Forbidden
'404':
description: Not Found
x-swagger-1-2-source: https://www.51offer.com/api-docs/default/nglancorrect
/ngLanCorrect/subject/details:
get:
operationId: getSubjectDetails
tags:
- ngLanCorrect
summary: 获取题目详情
description: 获取题目详情，sid为空查询最后一条
parameters:
- name: sid
in: query
required: false
schema:
type: integer
format: int32
description: id
- name: uid
in: query
required: false
schema:
type: integer
format: int32
description: sortUid
- name: pageNo
in: query
required: false
schema:
type: integer
format: int32
- name: pageSize
in: query
required: false
schema:
type: integer
format: int32
responses:
'200':
description: OK
content:
application/json:
schema:
$ref: '#/components/schemas/HttpResult'
'401':
description: Unauthorized
'403':
description: Forbidden
'404':
description: Not Found
x-swagger-1-2-source: https://www.51offer.com/api-docs/default/nglancorrect
/ngLanCorrect/subjects:
get:
operationId: querySubjectsList
tags:
- ngLanCorrect
summary: 获取往期口语批改题目列表
parameters:
- name: uid
in: query
required: false
schema:
type: integer
format: int32
description: 用户ID
- name: subjectDateStart
in: query
required: false
schema:
type: string
format: date-time
description: 题目日期开始时间
- name: subjectDateEnd
in: query
required: false
schema:
type: string
format: date-time
description: 题目日期结束时间
- name: pageNo
in: query
required: false
schema:
type: integer
format: int32
description: 页码 默认=1
- name: pageSize
in: query
required: false
schema:
type: integer
format: int32
description: 每页条数 默认=10
- name: beginRow
in: query
required: false
schema:
type: integer
format: int32
description: 分页开始行
- name: endRow
in: query
required: false
schema:
type: integer
format: int32
description: 分页结束行
- name: id
in: query
required: false
schema:
type: integer
format: int32
- name: title
in: query
required: false
schema:
type: string
- name: content
in: query
required: false
schema:
type: string
- name: subjectDate
in: query
required: false
schema:
type: string
format: date-time
- name: partInNum
in: query
required: false
schema:
type: integer
format: int32
- name: finishNum
in: query
required: false
schema:
type: integer
format: int32
- name: remindNum
in: query
required: false
schema:
type: integer
format: int32
- name: isDelete
in: query
required: false
schema:
type: integer
format: int32
- name: created
in: query
required: false
schema:
type: string
format: date-time
- name: creator
in: query
required: false
schema:
type: integer
format: int32
- name: modified
in: query
required: false
schema:
type: string
format: date-time
- name: modifier
in: query
required: false
schema:
type: integer
format: int32
- name: deleted
in: query
required: false
schema:
type: string
format: date-time
- name: deleter
in: query
required: false
schema:
type: integer
format: int32
responses:
'200':
description: OK
content:
application/json:
schema:
$ref: '#/components/schemas/HttpResult'
'401':
description: Unauthorized
'403':
description: Forbidden
'404':
description: Not Found
x-swagger-1-2-source: https://www.51offer.com/api-docs/default/nglancorrect
/ngLanCorrect/subjects/my:
get:
operationId: queryMySubjectsList
tags:
- ngLanCorrect
summary: 获取我的口语批改题目列表及我的批改券数量
parameters:
- name: uid
in: query
required: true
schema:
type: integer
format: int32
- name: token
in: query
required: false
schema:
type: string
description: salt
responses:
'200':
description: OK
content:
application/json:
schema:
$ref: '#/components/schemas/HttpResult'
'401':
description: Unauthorized
'403':
description: Forbidden
'404':
description: Not Found
x-swagger-1-2-source: https://www.51offer.com/api-docs/default/nglancorrect
components:
schemas:
HttpResult:
type: object
properties:
message:
type: string
code:
type: integer
format: int32
data:
type: object
header:
type: string
page:
$ref: '#/components/schemas/Page'
apiInfo:
$ref: '#/components/schemas/ApiInfo'
x-swagger-1-2-name: HttpResult
Page:
type: object
properties:
currPage:
type: integer
format: int32
pageSize:
type: integer
format: int32
count:
type: integer
format: int32
totalPage:
type: integer
format: int32
hasPre:
type: boolean
hasNext:
type: boolean
pageStr:
type: string
startRow:
type: integer
format: int32
endRow:
type: integer
format: int32
x-swagger-1-2-name: Page
ApiInfo:
type: object
properties:
operationTime:
type: string
version:
type: string
hostName:
type: string
x-swagger-1-2-name: ApiInfo
securitySchemes:
tokenHeader:
type: apiKey
in: header
name: token
description: 'Session token header. Observed on live responses from https://www.51offer.com: Access-Control-Allow-Headers includes "token" and Access-Control-Expose-Headers is "token". Unauthenticated calls to public endpoints (e.g. GET /ngGpaCalc/constants) return 200; authenticated user endpoints return the envelope with a non-200 code field. 51offer publishes no developer auth documentation.'