# check_api_health

Maps to GET /health. Returns service availability. Use to confirm the API is responsive before attempting operations.

Agent View of the PolicyLayer registry record for `check_api_health`. HTML page: https://policylayer.com/tools/defire-business-swapwizard-mcp/check-api-health

## Facts

- Tool: `check_api_health`
- Server: Swapwizard (`@swapwizard/mcp-server`) — https://policylayer.com/tools/defire-business-swapwizard-mcp.md
- Install: `npx -y @swapwizard/mcp-server`
- Homepage: https://github.com/DeFiRe-business/swapwizard-mcp
- Risk category: Read (Low risk)
- Registry record: grade D, identity unverified
- Server auth posture: open
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Allowed

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

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

## Why check_api_health is rated Low

This is a simple status query that retrieves service availability metadata. It has no side effects, does not move funds, execute transactions, or modify state. It is purely informational and falls squarely within the Read category.

From the tool's own definition: "Tool name 'check_api_health' and description 'Maps to GET /health. Returns service availability' indicate a read-only health check endpoint that retrieves status information without modifying or executing any operations."

## Use case

AI agents call check_api_health to retrieve information from Swapwizard 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 Swapwizard:

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

## Other tools on Swapwizard (10)

- `get_clean_quote` — Financial — https://policylayer.com/tools/defire-business-swapwizard-mcp/get-clean-quote.md
- `zap_into_lp_position` — Financial — https://policylayer.com/tools/defire-business-swapwizard-mcp/zap-into-lp-position.md
- `zap_out_of_lp_position` — Financial — https://policylayer.com/tools/defire-business-swapwizard-mcp/zap-out-of-lp-position.md
- `analyze_pool` — Read — https://policylayer.com/tools/defire-business-swapwizard-mcp/analyze-pool.md
- `get_setup_guide` — Read — https://policylayer.com/tools/defire-business-swapwizard-mcp/get-setup-guide.md
- `get_supported_chains` — Read — https://policylayer.com/tools/defire-business-swapwizard-mcp/get-supported-chains.md
- `get_supported_dexes` — Read — https://policylayer.com/tools/defire-business-swapwizard-mcp/get-supported-dexes.md
- `get_swap_quote` — Read — https://policylayer.com/tools/defire-business-swapwizard-mcp/get-swap-quote.md
- `list_user_lp_positions` — Read — https://policylayer.com/tools/defire-business-swapwizard-mcp/list-user-lp-positions.md
- `search_liquidity_pools` — Read — https://policylayer.com/tools/defire-business-swapwizard-mcp/search-liquidity-pools.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=defire-business-swapwizard-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/defire-business-swapwizard-mcp