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list_console_messages

Retrieve and filter browser console messages by level, text, source, or time range to debug web applications.

Instructions

List console messages. Supports filtering by level, time, text, source.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
levelNoFilter by level
limitNoMax messages (default: 50)
sinceMsNoOnly last N ms
textContainsNoText filter (case-insensitive)
sourceNoFilter by source
formatNoOutput format (default: text)
Behavior2/5

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

No annotations provided, so description must convey behavior. It only states listing and filtering, but does not disclose whether it is read-only, resource impact, rate limits, or result structure, leaving gaps for an AI agent.

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 short, direct sentences with no extraneous information. Every word adds value, making it highly efficient.

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?

With 6 parameters, no output schema, and no annotations, the description is under-specified. It lacks context on default behavior, return format, scope (e.g., which page), and handling of empty results or large limits, leaving significant gaps for an AI agent.

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 100%, so baseline is 3. The description summarizes filter capabilities but adds no new meaning beyond the schema's explicit parameter descriptions (e.g., level enum, limit default, textContains).

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 specifies the verb 'List' and the resource 'console messages', and mentions filtering capabilities (level, time, text, source), clearly distinguishing it from sibling tools like 'clear_console_messages'.

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 description implies use when needing to list filtered console messages, but lacks explicit when-not-to-use guidance or alternatives among siblings (e.g., 'get_firefox_output' may provide similar data).

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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