---
title: "Update Optimizer"
method: PATCH
path: "/v1/optimizers/{optimizer}"
tags: ["Optimizers"]
---

# Update Optimizer

`PATCH /v1/optimizers/{optimizer}`

## Request

- Base URL: `https://api.ensemble.markets` (the document declares no server; this is the origin it was published from)
- URL: `https://api.ensemble.markets/v1/optimizers/{optimizer}`
- Auth: HTTP bearer

Replace the class source and/or its description. A script edit is live
for every future run of a model that names the class. Renaming the class
is refused while stored scripts still reference the old name.

## Path parameters

- `optimizer` string, required: Optimizer ID (`optimizer_...` or legacy `o-...`) or class name (`MaxSharpeOpt`)

## Request body

- OptimizerUpdateRequest: Replace the class source and/or its one-line description.
  - `script` string, nullable: Replacement class source, re-validated and smoke-tested
  - `description` string, nullable: Replacement one-line description

## Response `200`

Successful Response

- Optimizer: One stored optimizer class.
  - `id` string, required: Optimizer ID (optimizer_... or legacy o-...)
  - `name` string, required: Python class name
  - `description` string, required
  - `source` 'prompt' | 'script', required
  - `prompt` string, nullable
  - `script` string, required
  - `hash` string, required
  - `used_by` OptimizerModelRef[]
    - `id` string, required
    - `name` string, nullable
  - `created_at` string, date-time, required
  - `updated_at` string, date-time, required

## Other responses

- `4XX`: The request was refused; `error.type` says why
- `5XX`: The server failed; quote `X-Request-Id` when reporting it

---

[API](https://skmtc.dev/ensemble/apis/ensemble-api.md) · [All operations](https://skmtc.dev/ensemble/apis/ensemble-api/llms.txt) · [OpenAPI document](https://skmtc.dev/ensemble/apis/ensemble-api/revisions/4c0fbd80c197?raw)