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app_status

Build/run status of a container app deployed via publish_site with a Dockerfile. Poll until status is live or failed.

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "slug": "<slug>"
    },
    "name": "app_status"
  }
}

Input Schema

NameRequiredDescriptionDefault
logsNoInclude build logs
slugYesSite slug

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observed

TDQS

A4/5.0
Behavior3/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations, the description must reveal behavior. It discloses that status is pollable and reaches terminal states live/failed, and that it's tied to Dockerfile deployments. But it leaves ambiguity about whether the tool blocks until terminal or returns immediately for the caller to poll, and doesn't mention any side effects or edge cases.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Two short sentences, front-loaded with purpose and a clear polling instruction. No redundant text.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a simple 2-parameter status tool, the description covers deployment context and expected statuses without needing an output schema. The only notable gap is the ambiguous polling behavior (blocking vs. non-blocking), which keeps it from a 5.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The schema already describes slug and logs with 100% coverage, so the baseline is 3. The description adds no extra parameter semantics beyond the schema, merely reinforcing the deployment context.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly identifies the tool as retrieving build/run status for a container app deployed via publish_site, distinguishing it from more general site tools like get_site. 'Poll until status is live or failed' gives an explicit action and expected terminal states.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

It specifies the context: for apps deployed via publish_site with a Dockerfile, and instructs polling until live/failed. However, it doesn't explicitly name alternatives or exclusion cases (e.g., when to use get_site instead), so it falls short of a 5.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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