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gamesme

chatlab-mcp

by gamesme

get_conversation_between

Retrieve messages between two members by numeric IDs, interleaved by time. Use after looking up member IDs via get_members.

Instructions

Get messages between two specific members (interleaved by time). Use when the user asks "what did A and B talk about". Members must be referenced by their numeric DB id; call get_members first to look them up.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
session_idYesSession ID
member_id_1YesFirst member numeric ID (from get_members)
member_id_2YesSecond member numeric ID (from get_members)
start_timeNoStart time (Unix seconds)
end_timeNoEnd time (Unix seconds)
limitNoMax messages (default 100, max 1000)
formatNoOutput format: text (default) or json
timezoneNoTimezone for time display (default Asia/Shanghai)
Behavior3/5

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

No annotations are provided, so the description carries full burden. It mentions interleaving by time and ID format, but does not disclose details like pagination, rate limits, or error handling. Some behavioral aspects are implied but not fully explicit.

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

Conciseness5/5

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

Two sentences that are front-loaded with purpose and behavior, then usage guidance. No redundant words; every part adds value.

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?

For a tool with 8 parameters, the description covers the core purpose and prerequisites but does not mention time range filtering, format options, or limit handling. The schema covers parameter details, so the description could be more complete but is adequate.

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

Parameters4/5

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

With 100% schema coverage, the baseline is 3. The description adds significant context for the critical member_id parameters (must be numeric from get_members) and explains the output is interleaved, which clarifies parameter usage beyond the schema descriptions.

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 messages between two specific members, interleaved by time, and provides an example user query. This distinguishes it from sibling tools like get_full_conversation or get_messages.

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?

The description specifies when to use it (user asks about conversation between two members) and gives a prerequisite to call get_members first to get numeric IDs. It lacks explicit alternatives among siblings but the guidance is still strong.

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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