---
title: "Get supported chain config"
method: GET
path: "/api/v3/config/chain-configs"
tags: ["External Wallet Access Mode"]
---

# Get supported chain config

`GET /api/v3/config/chain-configs`

Returns supported chains, token lists, contract addresses, and per-token Off-ramp and FX amount limits (minTopUpAmount, maxTopUpAmount, minFxAmount, maxFxAmount). Works logged in (adds balances and card eligibility) and logged out (config only). Read limits at request time; do not hardcode them.

## Headers

- `tokenId` string
- `network` string
- `sign` string
- `hash` string
- `deadline` string

## Response `200`

Response envelope. For the user API, retCode 0 means success; for the partner API, code 0 means success. Business rejections return HTTP 200 with a non-zero code.

- EwaEnvelope — Standard response envelope for the user API (api.ur.app).
  - `retCode` integer, required — 0 on success; non-zero indicates failure.
  - `retMsg` string, required — Human-readable message; error details when retCode is non-zero.
  - `result` unknown
  - `timeNow` integer — Server timestamp in milliseconds.

---

[API](https://skmtc.net/ur/apis/ur-api.md) · [All operations](https://skmtc.net/ur/apis/ur-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/ur/ur-api/revisions/087dcf516ce2/schema)