---
title: "Verify zk circuit proof"
method: POST
path: "/v1/circuits/{circuitId}/verify"
---

# Verify zk circuit proof

`POST /v1/circuits/{circuitId}/verify`

## Request

- Base URL: `https://api.affix-io.com`
- URL: `https://api.affix-io.com/v1/circuits/{circuitId}/verify`
- Auth: one of:
  - API key in header `X-API-Key`
  - HTTP bearer

Verify a zero-knowledge proof for a circuit (POST /v1/circuits/:circuitId/verify).

## Path parameters

- `circuitId` string, required

## Request body

- object

## Response `200`

Success (JSON).

## Other responses

- `400`: Invalid request.
- `401`: API key missing or not accepted.
- `409`: Conflict, e.g. double_spend_detected on a spent proof.
- `429`: Rate limited; see Retry-After.

---

[API](https://skmtc.dev/affix-io/apis/affixio-verification-api.md) · [All operations](https://skmtc.dev/affix-io/apis/affixio-verification-api/llms.txt) · [OpenAPI document](https://skmtc.dev/affix-io/apis/affixio-verification-api/revisions/9a5f8ff2582d?raw)