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CatalaniCD
by CatalaniCD

waha_get_chat

Retrieve details for a specific WhatsApp chat by providing its chat ID and session.

Instructions

Get details about a chat. chat_id is like '549...@c.us' or '...@g.us'.

Input Schema

NameRequiredDescriptionDefault
chat_idYes
sessionYes

Output Schema

NameRequiredDescriptionDefault

No arguments

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv0.1.0

TDQS

B3.2/5.0
Behavior2/5

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

No annotations are provided, so the description carries the full burden, yet it says nothing about read-only semantics, permissions, error behavior for unknown chat_ids, or what 'details' includes. The only behavioral hint is the implicit read nature of 'Get'.

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?

Two short sentences, front-loaded with the purpose, no filler. The only weakness is that the second sentence is a bare format note rather than carrying more of the missing context.

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 not be described. However, with a required undocumented 'session' parameter and no usage guidance, the description leaves real gaps for an agent invoking this tool for the first time.

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 does explain chat_id's expected format ('549...@c.us' or '...@g.us'), which is genuinely useful, but the required 'session' parameter is left entirely undefined in both schema and description.

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 ('Get details') and resource ('a chat'), which is clearly narrower than the sibling waha_list_chats and distinct from waha_get_chat_messages. It does not explicitly name a sibling to contrast with, so it stops 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 Guidelines3/5

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

Usage is only implied: an agent can infer this is for fetching one chat's metadata versus listing chats or reading messages. There is no explicit when-to-use, precondition, or alternative named.

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