Axiomatic Docs

API reference for fixed asset lifecycle, depreciation, disposal, impairment, and revaluation.

Fixed asset creation, updates, disposal, impairment, revaluation, and CIP capitalization. All endpoints require tenant context via entityId.

Authentication

Session cookie — set when signed in via the web app
API key — pass via the x-api-key header

All endpoints require authentication and entity access.

Endpoints

List and create

Method	Endpoint	Description
`GET`	`/api/fixed-assets?entityId=`	List assets
`POST`	`/api/fixed-assets`	Create asset or actions: dispose, impair, revalue, capitalizeCIP
`PUT`	`/api/fixed-assets`	Update asset
`DELETE`	`/api/fixed-assets`	Delete asset

GET /api/fixed-assets

Query parameters:

Parameter	Type	Required	Description
`entityId`	string	Yes	Entity ID for tenant context
`status`	string	No	Filter: `active`, `disposed`, `fully-depreciated`
`asOfDate`	string	No	Date for depreciation/valuation (YYYY-MM-DD)

Response: Array of assets with ID, description, acquisition date, cost, useful life, depreciation method, accumulated depreciation, and net book value.

POST /api/fixed-assets

Request body varies by intent:

Create asset:

{
  "entityId": "string",
  "description": "string",
  "acquisitionDate": "YYYY-MM-DD",
  "cost": 0,
  "currency": "USD",
  "usefulLifeYears": 0,
  "depreciationMethod": "straight-line" | "declining-balance" | "units-of-production",
  "assetAccountId": "string",
  "accumulatedDepreciationAccountId": "string",
  "depreciationExpenseAccountId": "string",
  "salvageValue": 0
}

Actions (dispose, impair, revalue, capitalizeCIP):

{
  "entityId": "string",
  "action": "dispose" | "impair" | "revalue" | "capitalizeCIP",
  "assetId": "string",
  "disposalDate": "YYYY-MM-DD",
  "proceeds": 0,
  "impairmentAmount": 0,
  "newCarryingValue": 0,
  "revaluationAmount": 0,
  "cipProjectId": "string"
}

Action	Description
`dispose`	Record disposal; write off remaining NBV, record proceeds/gain or loss
`impair`	Record impairment loss; reduce carrying value
`revalue`	Revalue asset (e.g., fair value model under IAS 16)
`capitalizeCIP`	Capitalize construction-in-progress to fixed asset

PUT /api/fixed-assets

Request body:

{
  "entityId": "string",
  "assetId": "string",
  "description": "string",
  "usefulLifeYears": 0,
  "depreciationMethod": "string",
  "salvageValue": 0
}

DELETE /api/fixed-assets

Request body or query:

Parameter	Type	Required	Description
`entityId`	string	Yes	Entity ID for tenant context
`assetId`	string	Yes	Asset ID to delete

Deletes the asset record. Use dispose for proper accounting treatment of active assets.

Fixed Assets

Authentication

Endpoints

List and create