build

A execute tool on the A2a Cloud MCP server.

SERVERA2a Cloud SOURCErobGetsTheJobDone/a2a-cloud

High RISK CLASS

Category Execute

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade C, identity unverified Pull the record →

This record as markdown: /tools/a2a-cloud/build.md

WHAT IT DOES

What build does on A2a Cloud

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.

RISK

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 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…

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs build safely

PolicyLayer is an MCP gateway: it sits between your AI agents and A2a Cloud, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For build, this is the rule to start with:

build Rate-limited

build stays usable, but rate-capped: a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "build": {
      "limits": [
        {
          "counter": "build_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect A2a Cloud, apply this rule, and every build call is checked against it from then on.

FAQ

Questions about build

What does the build tool do? +

build is a execute tool on the A2a Cloud MCP server. It is categorised as a Execute tool in the A2a Cloud MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on build? +

Register the A2a Cloud MCP server in PolicyLayer and add a rule for build: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches A2a Cloud. Nothing to install.

What risk level is build? +

build is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit build? +

Yes. Add a rate_limit block to the build rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block build completely? +

Set action: deny in the PolicyLayer policy for build. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides build? +

build is provided by the A2a Cloud MCP server (robGetsTheJobDone/a2a-cloud). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on A2a Cloud, and thousands of servers like it.

This server

All 10 A2a Cloud tools → High-risk tools on this server →

Across the catalogue

All high-risk MCP tools → The MCP Attack Database →

Guides

Govern code and CI agents →Agent sandbox →Least privilege for MCP →