Price Formulas

Endpointhttps://api.kontorion.eu/v1

Price formulas let you define dynamic pricing using mathematical expressions that are evaluated at billing time. This is useful for pricing models that depend on runtime variables - usage volume, contract size, exchange rates, or custom metrics.

Formulas support standard arithmetic operators, conditional logic, and named variables. Each variable has a type and optional default value. At billing time, the formula engine resolves all variables and computes the final price.

Example: base_price * (1 - volume_discount) where volume_discount increases with usage.

List price formulas

GET

https://api.kontorion.eu/v1

/price-formulas

Lists price formulas with cursor-based pagination

List price formulas › query Parameters

limit

integer

Number of items per page

cursor

string

Pagination cursor

List price formulas › Responses

Paginated list wrapped in data envelope

object[]

created_at

string

expression

string

head_version_id

string

HeadVersionID points at the currently-active row in price_formula_versions. Nil only during a brief window between INSERT INTO price_formulas and the auto-publish of v1.

id

string

is_system

boolean

name

string

organization_id

string

updated_at

string

object[]

version

integer

Create a price formula

POST

https://api.kontorion.eu/v1

/price-formulas

Creates a new price formula with a validated expression

Create a price formula › Request Body

expression

string

name

string

object[]

Create a price formula › Responses

Wrapped in data envelope

created_at

string

expression

string

head_version_id

string

HeadVersionID points at the currently-active row in price_formula_versions. Nil only during a brief window between INSERT INTO price_formulas and the auto-publish of v1.

id

string

is_system

boolean

name

string

organization_id

string

updated_at

string

object[]

version

integer

POST/price-formulas

curl --request POST \
  --url https://api.kontorion.eu/v1/price-formulas \
  --header 'Content-Type: application/json' \
  --data '
{
  "expression": "expression",
  "name": "name",
  "variables": [
    {
      "default": 0,
      "name": "name",
      "type": "number"
    }
  ]
}
'

shell

Example Request Body

{
  "expression": "expression",
  "name": "name",
  "variables": [
    {
      "default": 0,
      "name": "name",
      "type": "number"
    }
  ]
}

json

Example Responses

{
  "key": {
    "created_at": "created_at",
    "expression": "expression",
    "head_version_id": "head_version_id",
    "id": "id",
    "is_system": true,
    "name": "name",
    "organization_id": "organization_id",
    "updated_at": "updated_at",
    "variables": [
      {}
    ],
    "version": 0
  }
}

json

application/json

Get a price formula

GET

https://api.kontorion.eu/v1

/price-formulas/{id}

Retrieves a price formula by ID

Get a price formula › path Parameters

id

string · required

Price formula UUID

Get a price formula › Responses

Wrapped in data envelope

created_at

string

expression

string

head_version_id

string

HeadVersionID points at the currently-active row in price_formula_versions. Nil only during a brief window between INSERT INTO price_formulas and the auto-publish of v1.

id

string

is_system

boolean

name

string

organization_id

string

updated_at

string

object[]

version

integer

Update a price formula

PUT

https://api.kontorion.eu/v1

/price-formulas/{id}

Updates an existing price formula by ID, re-validating the expression if changed

Update a price formula › path Parameters

id

string · required

Price formula UUID

Update a price formula › Request Body

expression

string

name

string

object[]

Update a price formula › Responses

Wrapped in data envelope

created_at

string

expression

string

head_version_id

string

HeadVersionID points at the currently-active row in price_formula_versions. Nil only during a brief window between INSERT INTO price_formulas and the auto-publish of v1.

id

string

is_system

boolean

name

string

organization_id

string

updated_at

string

object[]

version

integer

PUT/price-formulas/{id}

curl --request PUT \
  --url https://api.kontorion.eu/v1/price-formulas/:id \
  --header 'Content-Type: application/json' \
  --data '
{
  "expression": "expression",
  "name": "name",
  "variables": [
    {
      "default": 0,
      "name": "name",
      "type": "number"
    }
  ]
}
'

shell

Example Request Body

{
  "expression": "expression",
  "name": "name",
  "variables": [
    {
      "default": 0,
      "name": "name",
      "type": "number"
    }
  ]
}

json

Example Responses

{
  "key": {
    "created_at": "created_at",
    "expression": "expression",
    "head_version_id": "head_version_id",
    "id": "id",
    "is_system": true,
    "name": "name",
    "organization_id": "organization_id",
    "updated_at": "updated_at",
    "variables": [
      {}
    ],
    "version": 0
  }
}

json

application/json

Delete a price formula

DELETE

https://api.kontorion.eu/v1

/price-formulas/{id}

Soft-deletes a price formula. Fails with 409 if the formula is still referenced by an active rate-table version.

Delete a price formula › path Parameters

id

string · required

Price formula ID (UUID)

Delete a price formula › Responses

Formula deleted

No data returned

Compute a price

POST

https://api.kontorion.eu/v1

/prices/compute

Evaluates a formula expression with variable bindings. Accepts either an inline expression or a reference to a stored formula by ID.

Compute a price › Request Body

debug

boolean

expression

string

formula_id

string

object

Compute a price › Responses

Wrapped in data envelope

debug_trace

expression

string

formula_id

string

formula_version

integer

result

string

object

Prices Promotions

List price formulas

GET

https://api.kontorion.eu/v1

/price-formulas

Lists price formulas with cursor-based pagination

List price formulas › query Parameters

limit

integer

Number of items per page

cursor

string

Pagination cursor

List price formulas › Responses

Paginated list wrapped in data envelope

object[]

created_at

string

expression

string

head_version_id

string

HeadVersionID points at the currently-active row in price_formula_versions. Nil only during a brief window between INSERT INTO price_formulas and the auto-publish of v1.

id

string

is_system

boolean

name

string

organization_id

string

updated_at

string

object[]

version

integer

Create a price formula

POST

https://api.kontorion.eu/v1

/price-formulas

Creates a new price formula with a validated expression

Create a price formula › Request Body

expression

string

name

string

object[]

Create a price formula › Responses

Wrapped in data envelope

created_at

string

expression

string

head_version_id

string

HeadVersionID points at the currently-active row in price_formula_versions. Nil only during a brief window between INSERT INTO price_formulas and the auto-publish of v1.

id

string

is_system

boolean

name

string

organization_id

string

updated_at

string

object[]

version

integer

Get a price formula

GET

https://api.kontorion.eu/v1

/price-formulas/{id}

Retrieves a price formula by ID

Get a price formula › path Parameters

id

string · required

Price formula UUID

Get a price formula › Responses

Wrapped in data envelope

created_at

string

expression

string

head_version_id

string

HeadVersionID points at the currently-active row in price_formula_versions. Nil only during a brief window between INSERT INTO price_formulas and the auto-publish of v1.

id

string

is_system

boolean

name

string

organization_id

string

updated_at

string

object[]

version

integer

Update a price formula

PUT

https://api.kontorion.eu/v1

/price-formulas/{id}

Updates an existing price formula by ID, re-validating the expression if changed

Update a price formula › path Parameters

id

string · required

Price formula UUID

Update a price formula › Request Body

expression

string

name

string

object[]

Update a price formula › Responses

Wrapped in data envelope

created_at

string

expression

string

head_version_id

string

HeadVersionID points at the currently-active row in price_formula_versions. Nil only during a brief window between INSERT INTO price_formulas and the auto-publish of v1.

id

string

is_system

boolean

name

string

organization_id

string

updated_at

string

object[]

version

integer

Delete a price formula

DELETE

https://api.kontorion.eu/v1

/price-formulas/{id}

Soft-deletes a price formula. Fails with 409 if the formula is still referenced by an active rate-table version.

Delete a price formula › path Parameters

id

string · required

Price formula ID (UUID)

Delete a price formula › Responses

Formula deleted

No data returned

Compute a price

POST

https://api.kontorion.eu/v1

/prices/compute

Evaluates a formula expression with variable bindings. Accepts either an inline expression or a reference to a stored formula by ID.

Compute a price › Request Body

debug

boolean

expression

string

formula_id

string

object

Compute a price › Responses

Wrapped in data envelope

debug_trace

expression

string

formula_id

string

formula_version

integer

result

string

object