# echo

A other tool on the A2a Cloud MCP server.

Agent View of the PolicyLayer registry record for `echo`. HTML page: https://policylayer.com/tools/a2a-cloud/echo

## Facts

- Tool: `echo`
- Server: A2a Cloud (`robGetsTheJobDone/a2a-cloud`) — https://policylayer.com/tools/a2a-cloud.md
- Homepage: https://github.com/robGetsTheJobDone/a2a-cloud
- Risk category: Other (Low risk)
- Registry record: grade C, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Rate-limited

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

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

## Why echo is rated Low

The name 'echo' strongly suggests a read/pass-through operation that reflects input back to the caller. With no description to confirm side effects, and given the conventional meaning of echo (no state changes, no execution, no deletion), this is most likely a benign utility. Confidence is lowered due to the empty description.

From the tool's own definition: "Tool name is 'echo' but description is empty or uninformative; conventionally 'echo' simply returns its input unchanged with no side effects."

## Use case

AI agents call echo as a supporting operation in A2a Cloud workflows.

## Recommended policy (PolicyLayer)

Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches A2a Cloud:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "echo": {
      "limits": [
        {
          "counter": "echo_rate",
          "window": "minute",
          "max": 60,
          "scope": "grant"
        }
      ]
    }
  }
}
```

## Other tools on A2a Cloud (9)

- `build` — Execute — https://policylayer.com/tools/a2a-cloud/build.md
- `chat` — Read — https://policylayer.com/tools/a2a-cloud/chat.md
- `status` — Read — https://policylayer.com/tools/a2a-cloud/status.md
- `auto` — Write — https://policylayer.com/tools/a2a-cloud/auto.md
- `chat_result` — Write — https://policylayer.com/tools/a2a-cloud/chat-result.md
- `create_agent` — Write — https://policylayer.com/tools/a2a-cloud/create-agent.md
- `resume_interaction` — Write — https://policylayer.com/tools/a2a-cloud/resume-interaction.md
- `turn` — Write — https://policylayer.com/tools/a2a-cloud/turn.md
- `upgrade_agent` — Write — https://policylayer.com/tools/a2a-cloud/upgrade-agent.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=a2a-cloud · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/a2a-cloud