---
title: "Check signer via memo transaction"
method: POST
path: "/v1/wallets/signer-check"
tags: ["Wallets"]
---

# Check signer via memo transaction

`POST /v1/wallets/signer-check`

Submits a memo transaction using the wallet bound to the authenticated API key. This endpoint requires API-key authentication.

## Request body

- object — Optional memo payload for signer check. Signing wallet is resolved from the API key binding.
  - `memo` string
  - `walletId` string

## Response `200`

Signer check transaction submitted

- object — Standard success response envelope.
  - `data` object, required — Signer check response payload.
    - `walletId` string, required — Signing wallet ID bound to the API key.
    - `walletAddress` string, required — Resolved signer address used for the memo transaction.
    - `feePayer` string, required — Fee payer address (Kora signer).
    - `memo` string, required — Memo text submitted on-chain.
    - `signature` string, required — Submitted Solana transaction signature.
    - `slot` integer, required — Confirmed slot number.
    - `blockTime` string, date-time, required — Timestamp recorded after confirmation.
  - `meta` object, required — Response metadata.
    - `requestId` string, required — Request identifier for tracing.
    - `timestamp` string, date-time, required — ISO 8601 timestamp.

## Other responses

- `400` — Error
- `401` — Error
- `403` — Error
- `429` — Error
- `500` — Error
- `502` — Error

---

[API](https://skmtc.dev/solana/apis/solana-developer-platform-api.md) · [All operations](https://skmtc.dev/solana/apis/solana-developer-platform-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/solana/solana-developer-platform-api/revisions/fffd44667b3d/schema)