---
kit_version: "1.0.0"
doc_id: "UMAY-DOC-09"
project_name: "UmayShop"
module: "09"
prepared_by: "compiled by example role"
content_owner: "To be assigned"
document_date: "2026-10-01"
status: "example"
language: "en"
revision_id: "en-example-r1"
source_revision_id: "example-r1"
translation_status: "machine_draft_reviewed_for_structure"
classification: "internal"
reference_eligibility: "example_only"
---

# UmayShop — 09. APIs / Interfaces and System Integration

> Translation note: This English machine draft preserves the source example snapshot. Language, publication and verification checklist values inside the example are historical sample content, not the current availability of this prototype. No human language signoff or real system verification is implied.

> **fictional example**: The text below is used to demonstrate how to fill out the template, and is not the actual implementation, permissions, deployment, or approval conclusion of UmayShop. Fictional examples cannot enter verified reference material.

Establish master interface records and integration ledgers including REST, GraphQL, callbacks, and messages.

[Return to Main Table of Contents](../README.md) · [Unified Completion and Verification Rules](../AUTHORING-GUIDE.md)

## Table of Contents

- [Document Information](#文档信息)
- [Applicable Scope and Verification Conclusions](#适用范围与核验结论)
- [Interface Scope and List Denominator](#接口范围与清单分母)
- [External Integration Ledger](#外部集成台账)
- [Request definition, authentication, and input](#请求定义-认证与输入)
- [Responses, Data Formats, and Errors](#响应-数据格式与错误)
- [Callbacks, Asynchronous Messaging, and GraphQL](#回调-异步消息与-graphql)
- [Rate limiting, timeouts, retry, and compatibility](#限流-超时-重试与兼容)
- [Invocation Examples and Verification Records](#调用示例与验证记录)
- [Sources, Final Decision, and Code Verification](#来源-最终决策与代码核验)
- [Attachments and Image Resources](#附件与图片资源)
- [Manual maintenance area](#人工维护区)
- [Language and Download Checks](#语言与下载检查)
- [Revision History](#修改历史)
- [Related Documentation](#相关文档)

<a id="文档信息"></a>

## Document Information

| Field | Content to Fill |
| --- | --- |
| content owner / Confirmer | Pending assignment / unconfirmed; compiled by is not an automatic approver |
| Technical Lead / Target Deadline | Azong / 2026-10-19; template takes effect only after their confirmation |
| Template Version / Current Status | 1.0.0 / example; unreleased |
| Project / Compiled by | UmayShop / Example author role |
| Applicable Version / Environment | Example dataset r1 / fictional test environment |
| Code repository / Collection branch / Full fixed commit SHA | Real snapshot not obtained; fictional examples do not fill in fake fixed commit SHAs |
| Most recent confirmation time / Confirmation basis | Unconfirmed / Confirmation record not obtained |
| Access classification | internal: Internal; increase classification when restricted information is involved, inheriting source permissions |
| Language / source revision | zh-CN / example-r1; English and Russian not yet generated |


<a id="适用范围与核验结论"></a>

## Scope of Application and Verification Conclusion

| Item | Conclusion |
| --- | --- |
| Coverage scope | Establish master interface records and integration ledgers including REST, GraphQL, callbacks, and messages. |
| Collection exclusions | umay/cis-mep and all its subtrees are not collected, not translated, not exported, and not counted toward acceptance |
| Verified Scope | Provides fictional example entries only, private code unverified |
| Number of verified reference materials | 0; this document did not perform real Issue/source code verification |
| Evidence credibility level | Actual system conclusions: low/unknown; confirmed requirement scope: high (single user source, not code proof) |
| Limitations / Gaps | Need to supplement final decision, confirmed permissions, exact SHA, implementation location, and verification records; do not extend front-end static checks into back-end or production conclusions |


<a id="接口范围与清单分母"></a>

## Interface Scope and Inventory Denominator

> Filling instructions: The inventory must integrate routes, interface definitions, client invocations, and manual confirmation; APIs are agreed request methods between systems.

| Source | Scope | Number Found | Number Verified | Reason for Lack of Coverage | Evidence |
| --- | --- | --- | --- | --- | --- |
| Example Route + Client | API-EX-01 / API-EX-02 | 2 | 0 actual interfaces | Fictional samples only | EXAMPLE-E09 |
| GraphQL / Messages | Example queries and events | 2 | 0 real interfaces | Dynamic registration and subscriptions must be checked | EXAMPLE-E09 |


<a id="外部集成台账"></a>

## External Integration Ledger

> Completion notes: Purpose, owner, environment, version, and invocation limits must be complete; unknown values must not be written as "unrestricted".

| Integration ID | External System / Purpose | Environment / Base URL | Protocol / Version | Internal / External Owner | Restrictions / Status |
| --- | --- | --- | --- | --- | --- |
| INT-EX-CARRIER | Simulated logistics query | https://carrier.example.invalid | HTTPS / Example v1 | Example Logistics Role / Example Carrier Role | Call restrictions unknown; do not send real requests |
| INT-EX-PAY | Mock payment status verification | https://pay.example.invalid | HTTPS / Example v1 | Example payment role / Example payment service role | Unknown; blind retry is prohibited for write operations |


<a id="请求定义-认证与输入"></a>

## Request Definition, Authentication, and Inputs

> Filling instructions: Duplicate a complete interface block for each interface; display placeholder credentials only. Parameters must include location, type, required status, constraints, and examples. Request content type, field nullability, default values, and validation rules must all be filled in field by field; URLs must not contain access tokens.

| Interface ID / Method / URL | Parameter / Location | Type / Required | Constraint / Example | Authentication | Caller |
| --- | --- | --- | --- | --- | --- |
| API-EX-01 GET https://api.example.invalid/example/orders/{id} | id / path | string / Yes | Example EX-ORDER-001; length rules pending verification | Placeholder Bearer &lt;REDACTED&gt;; actual permissions pending verification | WEB-DEMO / MOB-DEMO / ADMIN-DEMO |
| API-EX-02 POST https://carrier.example.invalid/example/shipments | parcelId / JSON body | string / Yes | Example EX-PARCEL-001 | See supplier approved agreement; this example contains no real credentials | API-DEMO |
| API-EX-02 POST /example/shipments | requestId / JSON body | string / Yes / Non-nullable | No default value; example EX-REQUEST-001 | Supplier authentication rules pending verification | API-DEMO |


<a id="响应-数据格式与错误"></a>

## Responses, Data Formats, and Errors

> Completion instructions: Record both successes and various failures simultaneously; distinguish between HTTP status and business error codes.

| Interface | HTTP / Business code | Output fields | Type / Nullable | Client handling | Retryability |
| --- | --- | --- | --- | --- | --- |
| API-EX-01 | 200 / OK | orderId, deliveryState, updatedAt | string, string, timestamp / No | Displays server-side results and time | Retry not required |
| API-EX-01 | 404 / ORDER_NOT_FOUND | code, traceId | string / No | Do not disclose order information of other users | No |
| API-EX-01 | 503 / DEPENDENCY_TIMEOUT | code, traceId | string / No | Query later; do not display success | Follow read-only policy of Directory 03 |
| API-EX-01 | 401 / AUTH_REQUIRED | code, traceId | string / No | Prompt to log in again | No automatic retry |
| API-EX-01 | 403 / FORBIDDEN | code, traceId | string / No | No permission prompt | No |
| API-EX-02 | 201 / CREATED (fictional example) | shipmentId, trackingId | string / No | Register carrier handover voucher | Retry not required |
| API-EX-02 | Indeterminate result / Timeout | Response may not have arrived | Unknown | Check against requestId first, then decide on compensation | Blind retries are prohibited |


<a id="回调-异步消息与-graphql"></a>

## Callbacks, Asynchronous Messages, and GraphQL

> Instructions: GraphQL must record operations, variables, fields, and errors; asynchronous events must specify version, order, and duplicate semantics. Query/Mutation/Subscription correspond to query/mutation/subscription; list service version, root field, variable types and nullability, pagination, authorization, and error structure operation by operation. State the basis for unsupported capabilities; generated types are not runtime proof.

| Object | Data and Version | Validation / Permission | Idempotency or Sequence | Error Handling | Evidence |
| --- | --- | --- | --- | --- | --- |
| EVT-EX-DELIVERY / JSON v1 | eventId, trackingId, status, occurredAt | Source identity and signature example | eventId deduplication; final state is not rolled back by older events | Invalid records sent to quarantine queue | EXAMPLE-E09 |
| OrderSummaryDemo query | Variables id:String!; order{id,deliveryState}; no list pagination example | Order visibility scope validation | Read-only; no writes | Read errors[]; partial data requires prompt | EXAMPLE-E09 |


<a id="限流-超时-重试与兼容"></a>

## Rate Limiting, Timeouts, Retry, and Compatibility

> Completion instructions: Idempotency must be clearly marked; impacts of different versions of the same interface must be separated.

| Interface | Rate limiting criteria | Timeout | Retry and backoff | Idempotency key | Compatibility / Deprecation |
| --- | --- | --- | --- | --- | --- |
| API-EX-01 | Unknown, cannot be filled as unlimited | Example 2 seconds | Retry 1 time for network/503 only in example; actual policy pending verification | Read-only | Adding fields requires legacy client testing |
| API-EX-02 | Unknown | Unknown | Query first when result is unclear; do not resend directly | Example requestId | Version upgrade requires vendor contract testing |


<a id="调用示例与验证记录"></a>

## Invocation Examples and Verification Records

> Completion instructions: Examples must not carry usable keys; manually fill in parameters and expectations, do not automatically execute write requests.

| Use Case | Sample Request | Expected | Real Execution Status | Evidence |
| --- | --- | --- | --- | --- |
| Read-only order query | GET /example/orders/EX-ORDER-001 | 200 and order summary; permission-denied rejection | Not executed; example | EXAMPLE-TEST-09 |
| Callback replay | Same eventId twice | Process only once | Not executed; example | EXAMPLE-TEST-09 |


### Single-interface reusable block

For each actual interface, completely fill in the request, response, error, and retry fields described above, and attach a minimal call example. The following content is an **un-callable fictional demonstration**; it must be replaced and verified before copying into actual documentation.

```http
GET /example/orders/EX-ORDER-001 HTTP/1.1
Host: api.example.invalid
Accept: application/json
Authorization: Bearer <REDACTED>
```

Successful response example (API-EX-01; timestamp is a fictional example, not a runtime record):

```json
{
  "orderId": "EX-ORDER-001",
  "deliveryState": "IN_TRANSIT",
  "updatedAt": "2026-01-01T00:00:00Z"
}
```

Error response example (HTTP 503):

```json
{"code": "DEPENDENCY_TIMEOUT", "traceId": "EX-TRACE-001"}
```

There is no evidence yet for actual rate limiting, length constraints, or retry intervals; this example cannot be used to claim that interface documentation acceptance is completed.


<a id="来源-最终决策与代码核验"></a>

## Sources, Final Decisions, and Code Verification

**Inclusion rules**: First confirm "what the final decision is", then verify "what the target version actually did". Issue closure, the latest comment, title, or "resolved" are not sufficient to pass. Same period only indicates candidate association, not that it has been implemented.

| Evidence ID | Source Type / Location | Read Snapshot / Time | Independence and Completeness | Current Status |
| --- | --- | --- | --- | --- |
| EXAMPLE-E09 | Fictional requirement description + fictional code clues | No real snapshot | Reprints from the same source do not count as independent sources; missing attachments must be marked | example_only |

| Decision ID | Issue / Comment ID / Time | Final decision and scope of application | Confirmer and permission basis | Alternative / Conflict Record | Decision Status |
| --- | --- | --- | --- | --- | --- |
| EXAMPLE-D09 | EXAMPLE-ISSUE / EXAMPLE-NOTE / fictional point in time | Displays unknown delivery state, does not presume delivered (fictional) | Real authorized confirmation record not obtained | Real conflicts unknown | unresolved |

| Final decision ID | Repository / Branch / fixed commit SHA | Implementation file:line number / symbol | Test or verification method / result | Code status / scope | Verifier / Time | Discrepancies and formal introduction conclusion |
| --- | --- | --- | --- | --- | --- | --- |
| EXAMPLE-D09 | Not obtained, do not use fake SHA | Real implementation location not obtained | Real verification not performed | unverified / none | Unverified / unconfirmed | Must not be introduced; review after supplementing evidence |

Decision status: `unresolved` (undecided), `confirmed` (validly confirmed), `superseded` (superseded). Code status: `unverified` (unverified), `partial` (partial only), `code_verified` (supported by fixed-version code), `runtime_verified` (tested and supported in target environment). **Static code support does not equal passing production execution.**

The following must be satisfied simultaneously: the final decision has been validly confirmed, there are no unresolved conflicts, relevant code coverage is complete, evidence is locatable, and manual verification records are complete, before it can be listed as verified reference material within its verified scope. Assertions involving deployment, permissions, or the real behavior of external services additionally require operational evidence from the corresponding environment. Historical decisions are retained as history and do not impersonate current rules.

| Gap ID | Missing evidence | Impact | Supplemental Owner / Deadline | Resolution Conditions |
| --- | --- | --- | --- | --- |
| GAP-09-01 | Real decisions and code snapshots | Cannot generate verified business conclusions | Pending assignment / Pending confirmation | Complete and record verifier, time, scope, and results |


<a id="附件与图片资源"></a>

## Attachments and Image Resources

| Resource ID | Source / Ownership | Local Relative Path | Integrity / Read Status | Permission Boundary | Language Processing |
| --- | --- | --- | --- | --- | --- |
| Sample Attachment | Original attachment not provided | Not acquired | Not read, not included in verification | Inherits Issue and attachment access scope | Translations and resources not generated |

Attachments must record the original file URL, file name, content checksum, read time, and access classification; access tokens or signed temporary URLs must not be saved. That a link can be opened does not mean the body has been read. Redirection to a login page, corruption, encryption, or unrecognized scans are all marked as unread. Converted text must link to original documents and images, without overwriting the originals.


<a id="人工维护区"></a>

## Manual Maintenance Area

<!-- MANUAL:START -->
To be filled: explanations, exceptions, and operational notes confirmed by the person in charge. Subsequent automatic updates must preserve this section; submit diffs when conflicting with new evidence, and do not silently delete. This initialization script will not update existing content.
<!-- MANUAL:END -->


<a id="语言与下载检查"></a>

## Language and Download Checks

| Check Item | Current Status / Requirement |
| --- | --- |
| Chinese source | This page is in Chinese; source revision fixed by revision_id |
| English / Russian | Not generated. Subsequent automated translations bind to Chinese source revision (source_revision_id); after the source text is updated, old translations are marked as stale |
| Content structure | Translation preserves heading hierarchy, table of contents, tables, code, links, fields, and numerical values; terminology follows the project glossary |
| Images and In-Image Text | Original images and local assets are retained; Chinese text inside images must be separately remade or provided with translation notes; untranslated images are not counted as complete translations |
| Markdown download | When images are included, download as a ZIP containing Markdown + assets + resource manifest; must not provide only invalid remote links |
| PDF Download | Platform must implement pagination, table of contents/bookmarks, tables, Chinese/English/Russian fonts, and local image embedding; missing images should block complete success |
| Export and permissions | Bind document revision, language, image version, and template version; inherit source permissions and do not disclose restricted content |
| Package capability boundary | Only generates Markdown document tree and local diagram source/SVG; does not perform translation, PDF rendering, login, or platform publishing |


<a id="修改历史"></a>

## Revision History

| Revision | Date | Compiled by | Changes | Confirmation / Basis |
| --- | --- | --- | --- | --- |
| example-r1 | 2026-10-01 | Compiled by example role | Initialize fictional example | Unconfirmed / Template 1.0.0 |


<a id="相关文档"></a>

## Related Documents

- [03. Backend / Backend Service](../03-backend/README.md)
- [04. Web / Web Client Application](../04-web/README.md)
- [05. Mobile / Mobile Application](../05-mobile/README.md)
- [06. Admin / Admin Backend](../06-admin/README.md)
- [07. WMS / Warehouse Management System](../07-wms/README.md)
- [08. Delivery / Delivery and Logistics](../08-delivery/README.md)
- [10. Databases and Data Models](../10-database/README.md)