# get_overview_dexs

List all dexs along with summaries of their volumes and dataType history data

Agent View of the PolicyLayer registry record for `get_overview_dexs`. HTML page: https://policylayer.com/tools/defillama/get-overview-dexs

## Facts

- Tool: `get_overview_dexs`
- Server: Defillama (`@nic0xflamel/defillama-mcp-server`) — https://policylayer.com/tools/defillama.md
- Install: `npx -y @nic0xflamel/defillama-mcp-server`
- Homepage: git+https://github.com/nic0flamel/notion-automation.git
- Risk category: Read (Low risk)
- Registry record: grade B, identity unverified
- Server rate-limited: no
- Parameters: 2
- Recommended policy verdict: Allowed

## Parameters

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `excludeTotalDataChart` | boolean | no | true to exclude aggregated chart from response |
| `excludeTotalDataChartBreakdown` | boolean | no | true to exclude broken down chart from response |

Parameters from the server's own tool schema.

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_overview_dexs",
    "arguments": {}
  }
}
```

## Why get_overview_dexs is rated Low

This tool retrieves and queries DEX protocol data (volumes, history) without modifying, executing operations, or causing side effects. It falls squarely into the Read category as a data retrieval endpoint. The low severity reflects that exposure of DeFi summary statistics poses minimal direct harm to the system or user assets.

From the tool's own definition: "Tool name is 'get_overview_dexs' and description states 'List all dexs along with summaries of their volumes and dataType history data'. The word 'List' and 'summaries' indicate data retrieval with no modification or execution."

## Use case

AI agents call get_overview_dexs to retrieve information from Defillama without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

## Recommended policy (PolicyLayer)

Verdict: **Allowed**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Defillama:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "get_overview_dexs": {}
  }
}
```

## Other tools on Defillama (13)

- `get_chart__by_pool` — Read — https://policylayer.com/tools/defillama/get-chart--by-pool.md
- `get_overview_dexs__by_chain` — Read — https://policylayer.com/tools/defillama/get-overview-dexs--by-chain.md
- `get_overview_fees` — Read — https://policylayer.com/tools/defillama/get-overview-fees.md
- `get_overview_fees__by_chain` — Read — https://policylayer.com/tools/defillama/get-overview-fees--by-chain.md
- `get_pools` — Read — https://policylayer.com/tools/defillama/get-pools.md
- `get_protocols` — Read — https://policylayer.com/tools/defillama/get-protocols.md
- `get_stablecoincharts_all` — Read — https://policylayer.com/tools/defillama/get-stablecoincharts-all.md
- `get_summary_dexs__by_protocol` — Read — https://policylayer.com/tools/defillama/get-summary-dexs--by-protocol.md
- `get_summary_fees__by_protocol` — Read — https://policylayer.com/tools/defillama/get-summary-fees--by-protocol.md
- `get_tvl__by_protocol` — Read — https://policylayer.com/tools/defillama/get-tvl--by-protocol.md
- `get_v2_chains` — Read — https://policylayer.com/tools/defillama/get-v2-chains.md
- `get_v2_historicalChainTvl` — Read — https://policylayer.com/tools/defillama/get-v2-historicalchaintvl.md
- `get_v2_historicalChainTvl__by_chain` — Read — https://policylayer.com/tools/defillama/get-v2-historicalchaintvl--by-chain.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=defillama · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/defillama