# Deposit USDC into Prepaid Memory Balance

> Deposit USDC into Prepaid Memory Balance is a paid API for AI agents from memory.withzero.xyz, paid per call via MPP, $0.1/call, status unknown (last checked 2026-09-14).

Deposits a specified amount of USDC (in micros) into the prepaid balance used to fund durable agent memory storage operations.

## Facts

- Endpoint: POST https://memory.withzero.xyz/api/v1/deposits
- Price: $0.1/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 3
- Provider: memory.withzero.xyz
- Website: https://memory.withzero.xyz
- Canonical page: https://www.zero.xyz/c/memory-withzero-xyz-deposit-usdc-into-prepaid-memory-balance-5b3bb8c8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_XxGUx2zyvjRNUzoy3u00v

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability memory-withzero-xyz-deposit-usdc-into-prepaid-memory-balance-5b3bb8c8 -d '<json body>'
```

Example prompt: Top up my memory.withzero.xyz prepaid balance by depositing 100000 USDC micros (that's $0.10) so I have enough credits to store more memories.

## When to prefer this

Use this endpoint when an AI agent needs to fund its prepaid memory balance on memory.withzero.xyz before storing new memories. This is a prerequisite to using the remember/store endpoints when balance is depleted. Choose this over withdrawal when adding rather than reclaiming funds.

## Known failure modes

- amount_usdc_micros missing or zero — 400 bad request
- amount_usdc_micros does not match paid USDC amount — payment mismatch error
- invalid format for amount_usdc_micros (non-integer or negative) — 422 validation error
- payment not confirmed on-chain before request — deposit not credited
- insufficient USDC in wallet to cover deposit amount

## How this service works

Deposit USDC into the prepaid memory balance (specify the amount via amount_usdc_micros in the request body; $0.10 funds ~10k memories — see GET /api/v1/rates).

## Output

Returns the owner identifier and the updated prepaid balance in USDC micros after the deposit has been applied, confirming the funds are available for memory operations.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "amount_usdc_micros"
 ],
 "properties": {
  "amount_usdc_micros": {
   "type": "string",
   "pattern": "^[1-9]\\d*$",
   "description": "Amount to deposit, in USDC micros (1 USDC = 1_000_000). Positive integer; must match the paid amount."
  }
 },
 "additionalProperties": false
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "owner",
  "balance_micros"
 ],
 "properties": {
  "owner": {
   "type": "string"
  },
  "balance_micros": {
   "type": "string",
   "description": "Prepaid balance after the deposit, in USDC micros."
  }
 },
 "additionalProperties": false
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/memory-withzero-xyz-deposit-usdc-into-prepaid-memory-balance-5b3bb8c8/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from memory.withzero.xyz](https://www.zero.xyz/host/memory.withzero.xyz/llms.txt)