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A2A Retailmedia — the agentic retail-media hub for grocery

by io.github.greencore-solutions
OverviewDiscussionsAdmin

Receive Demand

receive_demand

Retailer side: a registered program agent takes a qualified packet. Only a card in the registered state can receive; any other card is refused and nothing is charged.

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": {
      "market": "<market>",
      "banner": "<banner>",
      "handoff_id": "<handoff_id>"
    },
    "name": "receive_demand"
  }
}

Input Schema

NameRequiredDescriptionDefault
bannerYes
marketYes
handoff_idYes
decision_idNo

Output Schema

NameRequiredDescriptionDefault

No arguments

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed2 schema fields changed
    • removedInput schema / additionalProperties
      Removed value: -false
    • removedOutput schema / additionalProperties
      Removed value: -true
  2. First observed

TDQS

C2.5/5.0
Behavior3/5

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

Annotations already declare readOnlyHint=false, idempotentHint=false, and destructiveHint=false, covering the safety profile. The description adds that only a registered card can receive and that others are refused without charge, which is useful state-dependent behavior. However, with an output schema present, it need not explain returns, and it omits other behavioral details like error handling or side effects.

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?

The description is a single, front-loaded sentence with no wasted words. It efficiently conveys the retailer-side role and the card-state condition.

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

Completeness2/5

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

Although an output schema exists, the description fails to describe any of the four parameters, offers no guidance on when to use the tool versus its many siblings, and provides only minimal behavioral context. For a tool with required handoff_id and decision_id at 0% schema coverage, this is inadequate.

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

Parameters1/5

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

Schema description coverage is 0%, and the description does not describe any of the four parameters. It does not clarify what 'market', 'banner', 'handoff_id', or 'decision_id' mean or how they should be supplied, leaving the agent with no semantic guidance from the description.

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

Purpose3/5

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

The description states it is a retailer-side operation where an agent receives a demand packet, which gives a general sense of the action. However, compared to siblings like submit_demand or a2a_handoff, the description does not clearly distinguish what uniquely happens here or what the handoff_id/decision_id represent, leaving the purpose only vaguely clear.

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 explicit guidance on when to use receive_demand versus submit_demand or a2a_handoff, nor are prerequisites beyond the registered-card state mentioned. The description implies the card must be in a registered state but does not tell the agent under what circumstances to call this tool.

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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