---
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 server-authored memo transaction using the wallet selected by an authenticated API key or dashboard session. The wallet is the only readonly signer, Kora pays the fee, and the request cannot supply memo text.

## Headers

- `x-project-id` string — Selects the active project for this request. Required for session/dashboard callers. Ignored when authenticating with an API key, whose scope is fixed to the key's project.

## Request body

- object — Signer-check wallet selection. walletId is optional for an API key with one bound signing wallet and required for session-authenticated dashboard requests.
  - `walletId` string

## Response `200`

Signer check transaction submitted

- object — Standard success response envelope.
  - `data` object, required — Signer check response payload.
    - `walletId` string, required — Resolved signing wallet ID.
    - `walletAddress` string, required — Resolved signer address used for the memo transaction.
    - `feePayer` string, required — Fee payer address (Kora signer).
    - `memo` string, required — Server-generated 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.net/solana/apis/solana-developer-platform-api.md) · [All operations](https://skmtc.net/solana/apis/solana-developer-platform-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/solana/solana-developer-platform-api/revisions/672b1916ba61/schema)