---
title: "Get chains list"
method: GET
path: "/get_chains_list"
tags: ["General"]
---

# Get chains list

`GET /get_chains_list`

Get supported chains and their chain IDs. Use a narrow query when you need
to choose a chain_id for later tool calls; avoid broad requests and partial numeric ID queries
because filtering uses case-insensitive substring matching.

## Query parameters

- `query` string

## Response `200`

List of blockchain chains

- ToolResponse — Standard response structure for all API endpoints
  - `data` union, required — The main data payload of the response. Structure varies by endpoint.
    - object
    - string
    - number
    - boolean
  - `data_description` string[], nullable — Optional list of strings explaining the structure or fields of the data payload
  - `notes` string[], nullable — Optional list of important warnings or contextual notes, such as data truncation alerts
  - `instructions` string[], nullable — Optional list of suggested follow-up actions for an AI agent
  - `pagination` Pagination — Pagination information for endpoints that return large datasets
    - `next_call` object, required
      - `tool_name` string, required — The tool name to use for the next request
      - `params` object, required — Parameters for the next request including the cursor
        - `cursor` string, required — Opaque cursor string containing all necessary pagination information

## Other responses

- `500` — Server-side error - internal server errors

## Changes

- **2026-05-22** `8a59a06fa76c` — 1 info
  - added the new optional `query` request parameter `query`
- **2025-08-25** `d275455a7bd9` — 1 warning
  - deleted the `query` request parameter `query`

[Change history](https://skmtc.dev/blockscout/apis/blockscout-mcp-server-rest-api/changes/get_chains_list/get.md)

---

[API](https://skmtc.dev/blockscout/apis/blockscout-mcp-server-rest-api.md) · [All operations](https://skmtc.dev/blockscout/apis/blockscout-mcp-server-rest-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/blockscout/blockscout-mcp-server-rest-api/revisions/4e33c6973e49/schema)