> For the complete documentation index, see [llms.txt](https://help.mimeeq.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.mimeeq.com/api/item-masters/get-item-master.md).

# Get Item Master

Get an item master with its per-company alias codes and read-only market cost prices.

Use this detail to reconcile one item’s reference data; update its market prices through Market Cost Prices.

Requires the `itemMasters:read` scope.

```json
{"openapi":"3.1.0","info":{"title":"Mimeeq External API","version":"1.1.0"},"tags":[{"name":"Item Masters","description":"Manage item master records identified by product or item codes. These records hold operational data such as dimensions, weight, delivery time, commerce identifiers and company-specific alias codes.\n\nUse this section to synchronize item reference data from an ERP or catalogue system. Item masters are distinct from configurable Products. Market cost prices can be read with an item master but are maintained through Market Cost Prices.\n\n## What you can do\n\n| Task | Reference |\n| --- | --- |\n| Find available item masters | [List Item Masters](https://help.mimeeq.com/developers/item-masters/list-item-masters) |\n| Add a new item master | [Create Item Master](https://help.mimeeq.com/developers/item-masters/create-item-master) |\n| Import or update item masters | [Bulk upsert Item Masters](https://help.mimeeq.com/developers/item-masters/bulk-upsert-item-masters) |\n| Read one item master | [Get Item Master](https://help.mimeeq.com/developers/item-masters/get-item-master) |\n| Change item master | [Update Item Master](https://help.mimeeq.com/developers/item-masters/update-item-master) |\n\n## Before you start\n\nYour API key needs `itemMasters:read` to read these resources. Use `itemMasters:write` for write operations.\n\n## Important behaviour\n\nItem codes are unique without regard to case. Start with List Item Masters to resolve an `itemMasterId`. General updates replace the record fields, including alias codes. Bulk imports accept up to 1000 items and do not accept alias codes; inspect the result for skipped and invalid codes."}],"servers":[{"url":"https://admin.mimeeqapi.com","description":"Production API"}],"security":[{"apiKey":[]}],"components":{"securitySchemes":{"apiKey":{"type":"http","scheme":"bearer","description":"API key sent as a bearer token (mk_live_… / mk_test_…)."}},"schemas":{"ItemMastersDetail":{"type":"object","properties":{"data":{"type":"object","properties":{"itemMasterId":{"type":"string","pattern":"^IM-[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}$","description":"Item master identifier (IM-<uuid>)."},"code":{"type":"string"},"deliveryTime":{"anyOf":[{"type":"number"},{"type":"null"}]},"m3":{"anyOf":[{"type":"number"},{"type":"null"}]},"weight":{"anyOf":[{"type":"number"},{"type":"null"}]},"weightUnit":{"type":"string","enum":["kg","lb"]},"dimensions":{"type":"object","properties":{"width":{"anyOf":[{"type":"number"},{"type":"null"}]},"depth":{"anyOf":[{"type":"number"},{"type":"null"}]},"height":{"anyOf":[{"type":"number"},{"type":"null"}]}},"required":["width","depth","height"],"additionalProperties":false},"commerceId":{"anyOf":[{"type":"string"},{"type":"null"}]},"createdAt":{"anyOf":[{"type":"string"},{"type":"null"}],"description":"ISO 8601 creation timestamp."},"modifiedAt":{"anyOf":[{"type":"string"},{"type":"null"}],"description":"ISO 8601 last-modified timestamp."},"aliasCodes":{"type":"array","items":{"type":"object","properties":{"companyId":{"type":"string"},"companyName":{"anyOf":[{"type":"string"},{"type":"null"}]},"aliasCode":{"type":"string"}},"required":["companyId","companyName","aliasCode"],"additionalProperties":false}},"marketCostPrices":{"type":"array","items":{"type":"object","properties":{"market":{"anyOf":[{"type":"string"},{"type":"null"}]},"quantity":{"anyOf":[{"type":"number"},{"type":"null"}]},"cost":{"anyOf":[{"type":"number"},{"type":"null"}]},"rrp":{"anyOf":[{"type":"number"},{"type":"null"}]},"modifiedAt":{"anyOf":[{"type":"string"},{"type":"null"}],"description":"ISO 8601 last-modified timestamp."}},"required":["market","quantity","cost","rrp","modifiedAt"],"additionalProperties":false}}},"required":["itemMasterId","code","deliveryTime","m3","weight","weightUnit","dimensions","commerceId","createdAt","modifiedAt","aliasCodes","marketCostPrices"],"additionalProperties":false}},"required":["data"],"additionalProperties":false,"description":"Data schema used by Get Item Master (GET /v1/item-masters/{itemMasterId}). Read that operation for usage, permissions and update rules. Required fields and allowed values are defined below; request and response shapes can differ."},"PublicError":{"description":"An API error response. Use code and the HTTP status to classify the failure, message and optional details for context, and requestId when reporting it. Edge firewall responses may omit requestId.","type":"object","required":["code","message"],"properties":{"code":{"type":"string"},"message":{"type":"string"},"requestId":{"type":"string","description":"Present on every error the API itself returns; absent when the edge firewall rejected the request."},"details":{"description":"Optional error-specific details (e.g. per-field validation reasons)."}}}}},"paths":{"/v1/item-masters/{itemMasterId}":{"get":{"summary":"Get Item Master","tags":["Item Masters"],"description":"Get an item master with its per-company alias codes and read-only market cost prices.\n\nUse this detail to reconcile one item’s reference data; update its market prices through Market Cost Prices.\n\nRequires the `itemMasters:read` scope.","responses":{"200":{"description":"Successful response.","headers":{"RateLimit-Limit":{"description":"Requests that can be admitted at once (the tier burst).","schema":{"type":"integer"}},"RateLimit-Remaining":{"description":"Tokens left after this request.","schema":{"type":"integer"}},"RateLimit-Reset":{"description":"Seconds until the bucket is full again.","schema":{"type":"integer"}}},"content":{"application/json":{"schema":{"$ref":"#/components/schemas/ItemMastersDetail"}}}},"400":{"description":"Invalid request data.","content":{"application/json":{"schema":{"$ref":"#/components/schemas/PublicError"}}},"headers":{"RateLimit-Limit":{"description":"Requests that can be admitted at once (the tier burst).","schema":{"type":"integer"}},"RateLimit-Remaining":{"description":"Tokens left after this request.","schema":{"type":"integer"}},"RateLimit-Reset":{"description":"Seconds until the bucket is full again.","schema":{"type":"integer"}}}},"401":{"description":"Missing or invalid API key.","content":{"application/json":{"schema":{"$ref":"#/components/schemas/PublicError"}}}},"403":{"description":"The API key lacks the required scope (`scope_denied`), or the operation is not permitted for this account (`operation_not_permitted`).","content":{"application/json":{"schema":{"$ref":"#/components/schemas/PublicError"}}},"headers":{"RateLimit-Limit":{"description":"Requests that can be admitted at once (the tier burst).","schema":{"type":"integer"}},"RateLimit-Remaining":{"description":"Tokens left after this request.","schema":{"type":"integer"}},"RateLimit-Reset":{"description":"Seconds until the bucket is full again.","schema":{"type":"integer"}}}},"404":{"description":"Resource not found.","content":{"application/json":{"schema":{"$ref":"#/components/schemas/PublicError"}}},"headers":{"RateLimit-Limit":{"description":"Requests that can be admitted at once (the tier burst).","schema":{"type":"integer"}},"RateLimit-Remaining":{"description":"Tokens left after this request.","schema":{"type":"integer"}},"RateLimit-Reset":{"description":"Seconds until the bucket is full again.","schema":{"type":"integer"}}}},"429":{"description":"The API key exceeded its request rate (`rate_limit_exceeded`) or its monthly quota (`quota_exceeded`). Both carry `Retry-After`; the `RateLimit-*` headers accompany `rate_limit_exceeded` only, since a spent quota says nothing about the bucket.","content":{"application/json":{"schema":{"$ref":"#/components/schemas/PublicError"}}},"headers":{"Retry-After":{"description":"Seconds to wait before retrying.","schema":{"type":"integer"}},"RateLimit-Limit":{"description":"Requests that can be admitted at once (the tier burst).","schema":{"type":"integer"}},"RateLimit-Remaining":{"description":"Tokens left after this request.","schema":{"type":"integer"}},"RateLimit-Reset":{"description":"Seconds until the bucket is full again.","schema":{"type":"integer"}}}},"500":{"description":"Internal server error.","content":{"application/json":{"schema":{"$ref":"#/components/schemas/PublicError"}}},"headers":{"RateLimit-Limit":{"description":"Requests that can be admitted at once (the tier burst).","schema":{"type":"integer"}},"RateLimit-Remaining":{"description":"Tokens left after this request.","schema":{"type":"integer"}},"RateLimit-Reset":{"description":"Seconds until the bucket is full again.","schema":{"type":"integer"}}}}},"parameters":[{"name":"itemMasterId","in":"path","required":true,"schema":{"type":"string","pattern":"^IM-[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}$"}}]}}}}
```


---

# Agent Instructions
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```
GET https://help.mimeeq.com/api/item-masters/get-item-master.md?ask=<question>&goal=<user_goal>
```

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