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hubertgajewski

playwright-report-mcp

get_test_attachment

Retrieve the content of a named attachment from the latest test run. Specify the test title and attachment name to get details like AI diagnosis or DOM.

Instructions

Read the content of a named attachment for a specific test from the last run.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
workingDirectoryNoPlaywright project directory. Absolute or relative to the MCP server launch directory. Defaults to ".". Must be under PW_ALLOWED_DIRS.
testTitleYesExact test title as shown in the report
attachmentNameYesAttachment name, e.g. "AI diagnosis", "DOM"
Behavior2/5

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

With no annotations, the description carries full burden. It states 'read' but does not disclose side effects, safety, permissions, or behavior on missing attachments. The assumption of 'last run' is unclear if multiple runs exist.

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?

Single sentence, clear and to the point. No wasted words, but it could be slightly more informative without compromising conciseness.

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?

Lacks details on return format, error handling, and the optional workingDirectory parameter. The 'last run' concept is ambiguous. No output schema, so description should compensate but does not.

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%, so the description adds no extra meaning beyond schema descriptions. The workingDirectory parameter is not mentioned in the description. Baseline score of 3 is appropriate.

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?

The description clearly states the tool reads the content of a named attachment for a specific test from the last run. It identifies the resource (attachment) and action (read), but does not explicitly differentiate from sibling tools like list_tests or get_failed_tests.

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

Usage Guidelines2/5

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

No guidance on when to use this tool versus alternatives. Siblings like list_tests or get_run_status are not mentioned. The description implies use for the last run but does not explain prerequisites or context.

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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