A2A Retailmedia — the agentic retail-media hub for grocery

Log Audit

log_audit

Write one audit line for a step of the chain; returns its id.

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": {
      "event": "<event>"
    },
    "name": "log_audit"
  }
}

Input Schema

Name	Required	Description	Default
`event`	Yes
`detail`	No

Output Schema

Name	Required	Description	Default
No arguments

Schema Changelog

Changes observed during successful MCP inspections.

Changed2 schema fields changedOct 11, 2026
- removedInput schema / additionalProperties
```
Removed value: -false
```
- removedOutput schema / additionalProperties
```
Removed value: -true
```
First observedOct 5, 2026

TDQS

B3/5.0

Behavior3/5

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

Annotations already declare the write profile (readOnlyHint=false, idempotentHint=false, destructiveHint=false, openWorldHint=true), so the safety picture is covered. The description is consistent with them but adds only 'returns its id', which duplicates the existing output schema. No mention of rate limits, ordering guarantees, or failure behavior.

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

Conciseness4/5

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

A single front-loaded clause with zero filler. It is efficient, though arguably terse to the point of under-specification rather than deliberately concise.

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

Completeness3/5

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

An output schema exists so return values need no explanation, and the tool is simple (2 params, 1 required). Still, the undefined 'chain' concept and entirely undocumented parameters leave gaps for an agent deciding what to pass.

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

Parameters2/5

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

Schema description coverage is 0%, so the description carries the full burden for 'event' and 'detail'. It never explains what an event string should contain or how 'detail' differs, leaving both parameters semantically opaque.

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

Purpose4/5

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

States a specific verb (write) and resource (one audit line) and names a scope that no sibling tool covers, so an agent can tell it apart from transaction/package tools. The phrase 'a step of the chain' is undefined domain jargon, which keeps it short of a 5.

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

Usage Guidelines2/5

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

There is no when-to-use guidance, no prerequisites, and no mention of alternatives among the 19 sibling tools. The agent must infer that this is the trailing audit call after some other operation.

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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