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zhangluka

grain-seo-mcp

by zhangluka

analytics_anomalies

Detect unusual daily spikes or drops in website traffic by analyzing historical data with adjustable sensitivity settings.

Instructions

Identify unusual daily spikes or drops in traffic.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
siteUrlYesThe URL of the site
daysNoNumber of days to look back for baseline (default: 30)
thresholdNoSensitivity threshold (Standard Deviations, default: 2.5)
Behavior2/5

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

No annotations provided, so description must disclose behavior. It only says 'identify' but doesn't clarify if it's read-only, what side effects occur, or if authorization is needed. Lacks details on output or limitations.

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 is very concise with no filler. However, it could be slightly expanded for clarity without losing 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?

No output schema, yet description fails to explain what the tool returns (list of anomalies, statistics, etc.). Also lacks context on how days and threshold interact to detect anomalies.

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% with descriptions for all three parameters. The description adds no extra meaning beyond the schema, so baseline score applies.

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 identifies unusual daily spikes or drops in traffic, which is a specific verb-resource pair. It distinguishes from sibling tools like analytics_time_series or analytics_trends that show raw data rather than anomalies.

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 such as bing_analytics_detect_anomalies or other analytics tools. No when-not or prerequisite 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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