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Explain an IFSO payment

ifso_explain_payment
Read-onlyIdempotent

One if-so payment in plain words, from the same chain read as ifso_get_payment: what it waits for, the deadline, who can do what next (claim, accept, tap OK, decide, settle, send back, cancel) and when and where it comes back if nothing happens. Payment ids are large whole numbers; pass them as a string.

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": {
      "id": "<id>"
    },
    "name": "ifso_explain_payment"
  }
}

Input Schema

NameRequiredDescriptionDefault
idYesThe payment id as a decimal string, e.g. "12" or a 78-digit id.

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observed

TDQS

A3.9/5.0
Behavior4/5

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

Annotations already cover the safety profile (readOnly, idempotent, non-destructive, closed world), and with no output schema the description carries the return-content burden: it names what the explanation contains (what it waits for, the deadline, allowed next actions, fallback timing). It does not say what format the explanation is returned in.

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 sentence that identifies the tool and its output first, though the trailing parenthetical list of actions and the id note make it dense and slightly rambling.

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 one-parameter read tool with no output schema, the description covers what the answer explains and how to pass the id, which is close to sufficient; the missing piece is the shape of the returned explanation.

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 coverage is 100% and the schema already states the decimal-string form with a pattern; the description's note that ids are large whole numbers passed as a string reinforces but does not add new meaning beyond the schema.

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?

States a specific verb ('explain') and resource (an IFSO payment) and explicitly distinguishes itself from the sibling ifso_get_payment: same chain read, but rendered in plain words. An agent can tell the two apart without opening either schema.

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

Usage Guidelines3/5

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

The alternative (ifso_get_payment) is named and contrasts as raw vs. plain-words, which implies when to pick this one, but the condition is never stated explicitly ('use this when you need a human-readable summary') and no exclusions or prerequisites are given.

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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