Design Similarity Search

Find similar design-registration candidates from a product image with region, Locarno and legal-status filters. Review evidence through REST API or MCP.

CostEstimated 11 credits / call

Try online

POST · https://api.nexscope.ai/ai/designSimilaritySearchMCP · nexscope_design_similarity_search

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Design Registration Research

What this API does

Find similar design-registration candidates from a product image with region, Locarno and legal-status filters. Review evidence through REST API or MCP. The request accepts imageUrl, imageBase64, title, topK, regions. Its documented result includes candidates, warnings, request_id, dataSnapshotMonth, page, pageItemCount, pageSize, sourceTool.

Design Similarity Search API use cases

Find products matching a sourcing brief

To find products matching a sourcing brief, a marketplace analyst submits imageUrl and imageBase64 to Design Similarity Search. The returned candidates, warnings, request_id help identify products matching the requested search criteria.

Compare a product search shortlist

A marketplace analyst uses Design Similarity Search with imageUrl and imageBase64 to compare a product search shortlist. The returned candidates, warnings, request_id help compare candidates before requesting individual product details.

Collect candidates for a market review

For this workflow, a marketplace analyst calls Design Similarity Search with imageUrl and imageBase64 to collect candidates for a market review. The result helps choose products for a supplier or competitor review.

Design Similarity Search API FAQ

What does the Design Similarity Search API return?

Find similar design-registration candidates from a product image with region, Locarno and legal-status filters. Review evidence through REST API or MCP. The documented output includes candidates, warnings, request_id, dataSnapshotMonth, page, pageItemCount, pageSize, sourceTool. It corresponds to the supplied imageUrl, imageBase64, title, topK, regions. Optional fields can be absent; a missing value should not be interpreted as a measured zero. Example values illustrate the response shape, rather than live account results.

How many credits does the Design Similarity Search API cost?

The current documented cost is Estimated 11 credits / call. This is the same cost shown at the top of this page. If a range or estimate is displayed, the final charge depends on the request. Review your available credits and the pricing page before calling the API, and check API usage records for the actual charge.

How do I call the Design Similarity Search API from my app or an MCP client?

Send a POST request to https://api.nexscope.ai/ai/designSimilaritySearch with your API key as a Bearer token and the JSON inputs shown in API integration. In a compatible MCP client such as Claude or Cursor, connect Nexscope and call nexscope_design_similarity_search. Use the MCP arguments shown in the MCP guide, or switch Online test to MCP to review its request before adding it to your app.

View plans and credits Connect this API with MCP

Try this API

Endpoint

https://api.nexscope.ai/ai/designSimilaritySearch

MCP method

nexscope_design_similarity_search

Step 1 of 3 · Authenticate

Authentication

All run endpoints require a user API key. Send it as a bearer token in the Authorization header.

Authorization: Bearer nk-xxxxxxxxxxxxxxxxx

Missing or invalid API keys return an authentication error. Manage keys from .

Step 2 of 3 · Send a request

POSThttps://api.nexscope.ai/ai/designSimilaritySearch

Run an API

Send a JSON request body using the parameters described below.

Example request

Replace YOUR_API_KEY, then run this command in your terminal.

curl -X POST 'https://api.nexscope.ai/ai/designSimilaritySearch' \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "imageUrl": "https://example.com/product.png",
  "title": "Bottle",
  "topK": 20
}'

Step 3 of 3 · Inspect the result

Check the response

Read code for the request status and data for the result. Open the parameter and response reference for the full field definitions.

HTTP status codes

Code	Description
200	HTTP request completed. Check JSON code; only 0 indicates business success or acceptance.
400	Request JSON or required API parameters are invalid.
401	API key is missing, invalid, or cannot be matched to a user.
5xx	API execution or upstream service failed.

View parameters & response Try online

All categories/ Design Registration Research

POSThttps://api.nexscope.ai/ai/designSimilaritySearch

Run this API

Send a JSON request to execute this API and receive the documented response payload.

Open tester

Endpoint

Method	`POST`
Path	`https://api.nexscope.ai/ai/designSimilaritySearch`
Auth	`Bearer API key`
Content-Type	`application/json`

Request parameters

Name	Type	Required	Description
`imageBase64`	`string`	optional	Pure Base64 image bytes, 16–12582912 characters; omit imageUrl. Pattern: ^[A-Za-z0-9+/]+={0,2}$ Minimum length: 16 Maximum length: 12582912
`imageUrl`	`string`	optional	Public HTTP(S) image URL, 8–4096 characters; exactly one image source. Format: uri Pattern: ^https?:// Minimum length: 8 Maximum length: 4096
`jurisdictionCodes`	`array`	optional	Up to 32 distinct source codes of 2–8 letters; intersects regions when both are supplied. Maximum items: 32
`jurisdictionCodes[]`	`string`	required	Up to 32 distinct source codes of 2–8 letters; intersects regions when both are supplied. Pattern: ^[A-Za-z]{2,8}$
`locarnoClasses`	`array`	optional	Up to 64 distinct NN-NN Locarno classes. Maximum items: 64
`locarnoClasses[]`	`string`	required	Up to 64 distinct NN-NN Locarno classes. Pattern: ^[0-9]{2}-[0-9]{2}$
`patentStatus`	`array`	optional	One or two distinct integers: 0 inactive, 1 active; omit for no status preference. Minimum items: 1 Maximum items: 2
`patentStatus[]`	`integer`	required	One or two distinct integers: 0 inactive, 1 active; omit for no status preference. Allowed: 0, 1
`regions`	`array`	optional	Up to 64 distinct two-letter region codes, e.g. US or EM; use EM for EU. Maximum items: 64
`regions[]`	`string`	required	Up to 64 distinct two-letter region codes, e.g. US or EM; use EM for EU. Pattern: ^[A-Za-z]{2}$
`title`	`string`	optional	Optional image context, 1–4096 trimmed characters; not a standalone text query. Minimum length: 1 Maximum length: 4096
`topK`	`integer`	optional	Candidate limit, 1–200; default 20. Default: 20 Minimum: 1 Maximum: 200
`topLoc`	`array`	optional	Up to 32 distinct two-digit Locarno prefixes; preserve leading zeros. Maximum items: 32
`topLoc[]`	`string`	required	Up to 32 distinct two-digit Locarno prefixes; preserve leading zeros. Pattern: ^[0-9]{2}$

One of option 1 — requires imageUrl

One of option 2 — requires imageBase64

Code example

{
  "imageUrl": "https://example.com/product.png",
  "title": "Bottle",
  "topK": 20
}

Response example

Platform response envelope. code 0 indicates success or acceptance; data contains the business result.

{
  "code": 0,
  "cost": "-1",
  "data": {
    "data": {
      "code": "OK",
      "data": {
        "candidates": [
          {
            "design_registration_id": "example-design-id",
            "holder_names": [
              "Example holder"
            ],
            "image_available": true,
            "locarno_classes": [
              "09-01"
            ],
            "primary_identifier": "example-registration",
            "similarity": 85.97,
            "simple_legal_status": "inactive",
            "title_en": "Bottle"
          }
        ],
        "coverage": {
          "metadata_unknown": {
            "legal_status": 1
          }
        },
        "warnings": [
          "metadata_incomplete"
        ]
      },
      "request_id": "example-request"
    }
  },
  "msg": null,
  "time": "2026-01-01 00:00:00",
  "traceId": null,
  "ts": "0"
}

Response fields

Name	Type	Required	Description
`code`	`integer`	required	0 means accepted or successful; nonzero is a platform error.
`cost`	`string`	required	Elapsed milliseconds, never credits; -1 outside web requests.
`data`	`any`	required	Data value used by this API operation.
`msg`	`string \| null`	required	Msg value used by this API operation.
`time`	`string`	required	Server local time: yyyy-MM-dd HH:mm:ss.
`traceId`	`string \| null`	required	Trace id value used by this API operation.
`ts`	`string`	required	Epoch milliseconds.

Any of option 1 — requires data

Name	Type	Required	Description
`data`	`object`	required	Data value used by this API operation.
`data.costTime`	`any`	optional	Cost time value used by this API operation.
`data.costToken`	`any`	optional	Cost token value used by this API operation.
`data.data`	`object`	required	Source envelope retained within the gateway payload. Example: {}
`data.data.code`	`string`	required	Source status; successful retrieval is OK. Example: OK
`data.data.data`	`object`	required	Candidate retrieval result; retain order, coverage and warnings. Example: {}
`data.data.data.candidates`	`array`	required	Design-registration candidates; empty does not establish freedom to operate. Example: [{"design_registration_id":"example-design-id","holder_names":["Example holder"],"image_available":true,"locarno_classes":["09-01"],"primary_identifier":"example-registration","similarity":85.97,"simple_legal_status":"inactive","title_en":"Bottle"}]
`data.data.data.coverage`	`any`	optional	Coverage value used by this API operation.
`data.data.data.warnings`	`any`	optional	Warnings value used by this API operation.
`data.data.request_id`	`any`	optional	Request id value used by this API operation.
`data.dataSnapshotMonth`	`any`	optional	Data snapshot month value used by this API operation.
`data.page`	`any`	optional	Page value used by this API operation.
`data.pageItemCount`	`any`	optional	Page item count value used by this API operation.
`data.pageSize`	`any`	optional	Page size value used by this API operation.
`data.sourceTool`	`any`	optional	Source tool value used by this API operation.
`data.sourceType`	`any`	optional	Source type value used by this API operation.
`data.title`	`any`	optional	Title value used by this API operation.
`data.totalPage`	`any`	optional	Total page value used by this API operation.
`data.type`	`any`	optional	Type value used by this API operation.

Any of option 1

Name	Type	Required	Description
`data.costTime`	`integer`	optional	Execution time reported by the upstream provider. Example: null

Any of option 2

Name	Type	Required	Description
`data.costTime`	`null`	optional	Cost time value used by this API operation.

Any of option 1

Name	Type	Required	Description
`data.costToken`	`integer`	optional	Token cost reported by the upstream provider. Example: null

Any of option 2

Name	Type	Required	Description
`data.costToken`	`null`	optional	Cost token value used by this API operation.

Any of option 1

Name	Type	Required	Description
`data.data.data.coverage`	`object`	optional	Source coverage metadata; ratios may exceed one and are not guaranteed coverage percentages. Example: {}

Any of option 2

Name	Type	Required	Description
`data.data.data.coverage`	`null`	optional	Coverage value used by this API operation.

Any of option 1

Name	Type	Required	Description
`data.data.data.warnings`	`array`	optional	Source limitations and warnings. Example: ["metadata_incomplete"]

Any of option 2

Name	Type	Required	Description
`data.data.data.warnings`	`null`	optional	Warnings value used by this API operation.

Any of option 1

Name	Type	Required	Description
`data.data.request_id`	`string`	optional	Source request identifier. Example: example-request

Any of option 2

Name	Type	Required	Description
`data.data.request_id`	`null`	optional	Request id value used by this API operation.

Any of option 1

Name	Type	Required	Description
`data.dataSnapshotMonth`	`string`	optional	Data snapshot month returned by the upstream provider. Example: null

Any of option 2

Name	Type	Required	Description
`data.dataSnapshotMonth`	`null`	optional	Data snapshot month value used by this API operation.

Any of option 1

Name	Type	Required	Description
`data.page`	`integer`	optional	Current page returned by the upstream provider. Example: null

Any of option 2

Name	Type	Required	Description
`data.page`	`null`	optional	Page value used by this API operation.

Any of option 1

Name	Type	Required	Description
`data.pageItemCount`	`integer`	optional	Item count on the current page returned by the upstream provider. Example: null

Any of option 2

Name	Type	Required	Description
`data.pageItemCount`	`null`	optional	Page item count value used by this API operation.

Any of option 1

Name	Type	Required	Description
`data.pageSize`	`integer`	optional	Page size returned by the upstream provider. Example: null

Any of option 2

Name	Type	Required	Description
`data.pageSize`	`null`	optional	Page size value used by this API operation.

Any of option 1

Name	Type	Required	Description
`data.sourceTool`	`string`	optional	Provider-specific source tool name. Example: null

Any of option 2

Name	Type	Required	Description
`data.sourceTool`	`null`	optional	Source tool value used by this API operation.

Any of option 1

Name	Type	Required	Description
`data.sourceType`	`string`	optional	Provider-specific source platform type. Example: null

Any of option 2

Name	Type	Required	Description
`data.sourceType`	`null`	optional	Source type value used by this API operation.

Any of option 1

Name	Type	Required	Description
`data.title`	`string`	optional	Provider-specific response title. Example: null

Any of option 2

Name	Type	Required	Description
`data.title`	`null`	optional	Title value used by this API operation.

Any of option 1

Name	Type	Required	Description
`data.totalPage`	`integer`	optional	Total page count returned by the upstream provider. Example: null

Any of option 2

Name	Type	Required	Description
`data.totalPage`	`null`	optional	Total page value used by this API operation.

Any of option 1

Name	Type	Required	Description
`data.type`	`string`	optional	Provider-specific render or payload type. Example: null

Any of option 2

Name	Type	Required	Description
`data.type`	`null`	optional	Type value used by this API operation.

Any of option 2

Name	Type	Required	Description
`data`	`null`	required	Data value used by this API operation.

Responses

Code	Description
200	HTTP request completed. Check JSON code; only 0 indicates business success or acceptance.
400	Request JSON or required API parameters are invalid.
401	API key is missing, invalid, or cannot be matched to a user.
5xx	API execution or upstream service failed.

Data source, freshness, and limitations

Source, freshness, coverage, rate limits, and estimation notes are not specified in this API definition unless they appear in the request or response field documentation above. Do not assume official marketplace data or real-time freshness when it is not explicitly documented.

Step 1 of 2 · Connect your MCP client

MCP

V2 recommended

Connect remote agents through the standard MCP 2025-11-25 Streamable HTTP endpoint. Use OAuth 2.1 Authorization Code with PKCE, or an API key for compatibility.

POST https://api.nexscope.ai/mcp
MCP-Protocol-Version: 2025-11-25
Content-Type: application/json

Authentication

OAuth clients request the mcp:tools scope. The endpoint's 401 response advertises protected-resource metadata for authorization discovery.

Step 2 of 2 · Call the tool

Call a tool

{
  "jsonrpc": "2.0",
  "id": "tool-call-1",
  "method": "tools/call",
  "params": {
    "name": "nexscope_design_similarity_search",
    "arguments": {
      "imageUrl": "https://example.com/product.png",
      "title": "Bottle",
      "topK": 20
    }
  }
}

Legacy MCP v1

Existing API-key clients can continue using the compatibility endpoint. New integrations should use MCP v2.

GET / POST /mcp/legacy

Online test

Execute the current API with your API key and JSON payload. Online tests use this site's configured API environment; the Endpoint and copyable examples use the public integration address.

Estimated 11 credits / callAPI usage records

Try it

Send a real request with the same contract shown in the reference.

Endpoint

/ai/designSimilaritySearch

MCP method

nexscope_design_similarity_search

API key*

JSON payload*

cURL

curl -X POST \
  https://api.nexscope.ai/ai/designSimilaritySearch \
  -H "Authorization: Bearer nk-..." \
  -H "Content-Type: application/json" \
  -d '{ "imageUrl": "https://example.com/product.png", "title": "Bottle", "topK": 20 }'

Response

No response yet. Run the request to see the response here.

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