---
title: "Set Fair Values"
method: POST
path: "/v1/fair-values"
tags: ["fair-values"]
---

# Set Fair Values

`POST /v1/fair-values`

Set fair values for instruments on a subaccount (insert-or-overwrite, atomic).

## Request body

- FairValuesUpsert — Request schema for setting fair values on one subaccount (insert-or-overwrite).
  - `subaccount_id` string, uuid, required
  - `fair_values` FairValueItem[], required
    - `river_id` integer, required
    - `fair_value` number, required — Probability in [0, 1]

## Response `200`

Successful Response

- FairValueListResponse
  - `fair_values` FairValueResponse[], required
    - `subaccount_id` string, uuid, required
    - `river_id` integer, required
    - `fair_value` number, required
    - `updated_at` string, required

## Other responses

- `422` — Validation Error

---

[API](https://skmtc.net/rivermarkets/apis/river-finance-api.md) · [All operations](https://skmtc.net/rivermarkets/apis/river-finance-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/rivermarkets/river-finance-api/revisions/c90d562d4ad1/schema)