---
title: "Signs data using the specified relayer."
method: POST
path: "/api/v1/relayers/{relayer_id}/sign"
tags: ["Relayers"]
---

# Signs data using the specified relayer.

`POST /api/v1/relayers/{relayer_id}/sign`

## Path parameters

- `relayer_id` string, required

## Request body

- SignDataRequest
  - `message` string, required

## Response `200`

Relayer signed data successfully

- ApiResponseSignDataResponse
  - `data` union
    - SignDataResponseEvm
      - `r` string, required
      - `s` string, required
      - `sig` string, required
      - `v` integer, required
    - SignDataResponseSolana
      - `public_key` string, required
      - `signature` string, required
  - `error` string
  - `metadata` PluginMetadata
    - `logs` LogEntry[], nullable
      - `level` 'log' | 'info' | 'error' | 'warn' | 'debug' | 'result', required
      - `message` string, required
    - `traces` unknown[], nullable
      - unknown
  - `pagination` PaginationMeta
    - `current_page` integer, required
    - `per_page` integer, required
    - `total_items` integer, required
  - `success` boolean, required

## Other responses

- `400` — BadRequest
- `401` — Unauthorized
- `404` — Not Found
- `429` — Too Many Requests
- `500` — Internal server error

---

[API](https://skmtc.dev/openzeppelin/apis/openzeppelin-relayer-api.md) · [All operations](https://skmtc.dev/openzeppelin/apis/openzeppelin-relayer-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/openzeppelin/openzeppelin-relayer-api/revisions/e6e7514284f5/schema)