A2A Peptides

Get Availability

get_availability

Read-onlyIdempotent

Availability of a presentation once gate_transaction has answered allow or require_rx (decision_id): the availability block — banners[] on the shelf of record with licence footnote, pos_count (chain points of sale from the CPG Knowledge Graph retailer registry, or licensed dispensers on the provider directory for medicines), product_urls[] (retailer product page, register page, holder page) — plus tenant offers.

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": {
      "presentation_id": "<presentation_id>",
      "decision_id": "<decision_id>"
    },
    "name": "get_availability"
  }
}

Input Schema

Name	Required	Description	Default
`tenant`	No
`decision_id`	Yes
`presentation_id`	Yes

Output Schema

Name	Required	Description	Default
No arguments

Schema Changelog

Changes observed during successful MCP inspections.

First observedNov 15, 2026

TDQS

A4.1/5.0

Behavior4/5

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

Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, covering safety. The description adds context about the precondition and the structure of the returned data, which is helpful. No contradiction with annotations.

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 dense sentence that packs purpose, precondition, and output summary. It is front-loaded and not verbose, though it uses domain-specific jargon that may reduce immediate readability.

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?

There is an output schema (not shown here), but the description provides a good verbal overview of the returned fields (banners, pos_count, product_urls, tenant offers). It also notes the precondition. Missing error handling or behavior when the decision is not allow/require_rx, but that is minor for a read-only, idempotent tool.

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?

Schema description coverage is 0%, so the description must compensate. It explains decision_id as coming from gate_transaction and presentation_id implicitly, but does not explain tenant at all. The mention of 'tenant offers' hints at tenant's role, but it's not explicit. This is a moderate gap.

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 states the tool retrieves availability data for a presentation, conditioned on a gate_transaction decision. It specifies the exact data returned (banners, pos_count, product_urls, tenant offers) and distinguishes itself from sibling tools like get_price or get_item by focusing on availability after a gate decision.

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 explicitly defines the precondition: the tool should be used after gate_transaction has returned allow or require_rx, with the decision_id. This gives a clear temporal usage context. It does not name alternatives or when not to use it, but the precondition is a strong implicit guideline.

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

All A2A Peptides tools Inspect

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