---
title: "Fund Wallet"
method: POST
path: "/v1/agents/{agent_id}/wallet/fund"
tags: ["v1", "protected", "wallet"]
---

# Fund Wallet

`POST /v1/agents/{agent_id}/wallet/fund`

Update the service budget amount.

## Path parameters

- `agent_id` string, uuid, required

## Request body

- FundWalletRequest
  - `service_budget_usd` union, required
    - number
    - string

## Response `200`

Successful Response

- WalletResponse
  - `agent_id` string, required
  - `created_at` string, nullable
  - `has_credentials` boolean
  - `id` string, required
  - `mpp_config` object, nullable
  - `service_budget_period` string, required
  - `service_budget_usd` string, required
  - `status` string, required
  - `updated_at` string, nullable
  - `wallet_type` string, required
  - `x402_config` object, nullable

## Other responses

- `422` — Validation Error

## Changes

- **2026-09-25** `86958030d9bc` — 1 breaking, 1 info
  - the `service_budget_usd` response's property type changed from `number` to `string` for status `200`
  - request property `service_budget_usd` list-of-types was widened by adding types `string` to media type `application/json`
- **2026-07-08** `8940d7f77282` — 2 breaking
  - the `created_at/anyOf[subschema #1]/` response's property format changed from `date-time` to no format for status `200`
  - the `updated_at/anyOf[subschema #1]/` response's property format changed from `date-time` to no format for status `200`

[Change history](https://skmtc.dev/agentarea/apis/agentarea-api/changes/v1/agents/:agent_id/wallet/fund/post.md)

---

[API](https://skmtc.dev/agentarea/apis/agentarea-api.md) · [All operations](https://skmtc.dev/agentarea/apis/agentarea-api/llms.txt) · [OpenAPI document](https://skmtc.dev/agentarea/apis/agentarea-api/revisions/ebd031ab895b?raw)