---
title: "Create a free prepaid API key"
method: POST
path: "/prepaid/create"
tags: ["Prepaid"]
---

# Create a free prepaid API key

`POST /prepaid/create`

Creates a new prepaid API key with 50 free starter credits. No payment or signup required.
When credits run out, the API will return 402 with instructions to refill via /prepaid/refill.

## Response `200`

API key created successfully

- object
  - `apiKey` string — Your new 64-char hex API key
  - `credits` integer — Total credits available (50 free)
  - `usage` integer — Credits used (0 for new key)
  - `remaining` integer — Credits remaining
  - `callsPerMinute` integer — Rate limit (600)

---

[API](https://skmtc.dev/coincap/apis/coincap-api.md) · [All operations](https://skmtc.dev/coincap/apis/coincap-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/coincap/coincap-api/revisions/e3d3739c2c03/schema)