# build

A execute tool on the A2a Cloud MCP server.

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

## Facts

- Tool: `build`
- Server: A2a Cloud (`robGetsTheJobDone/a2a-cloud`) — https://policylayer.com/tools/a2a-cloud.md
- Homepage: https://github.com/robGetsTheJobDone/a2a-cloud
- Risk category: Execute (High 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": "build",
    "arguments": {}
  }
}
```

## Why build is rated High

The 'build' tool in an 'Autonomous LLM build orchestrator' context clearly executes build operations (compilation, testing, linting, type-checking) that can run arbitrary code and external operations. While the description is empty, the server's purpose and sibling tools provide strong contextual evidence.

From the tool's own definition: "Tool named 'build' with empty description; sibling tools 'run', 'scan', 'status', and server description mentioning 'plans a goal into tasks, edits code with anchored SEARCH/REPLACE, and verifies every change through build/test/lint/typecheck gates' indicate…"

## Use case

AI agents invoke build to trigger actions in A2a Cloud. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.

## 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": {
    "build": {
      "limits": [
        {
          "counter": "build_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}
```

## Other tools on A2a Cloud (9)

- `echo` — Other — https://policylayer.com/tools/a2a-cloud/echo.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