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

With no annotations provided, the description carries the full burden of behavioral disclosure. While 'Estimate' implies a read-only calculation, the description doesn't address important behavioral aspects like whether this requires authentication, what format the estimate returns, whether it's real-time or cached data, rate limits, or error conditions. The description is too minimal for a tool with 7 parameters.

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

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

The description is extremely concise at just 7 words with zero wasted language. It's front-loaded with the core purpose and uses efficient phrasing. Every word earns its place, making it easy to parse while conveying the essential function.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a tool with 7 parameters, no annotations, and no output schema, the description is insufficiently complete. It doesn't explain what the tool returns (cost breakdown, total amount, comparison data), doesn't address authentication requirements, and provides no context about data sources or calculation methodology. The minimal description leaves too many operational questions unanswered.

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

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

The description provides no parameter-specific information beyond the generic 'based on usage patterns'. However, with 100% schema description coverage, all 7 parameters are well-documented in the schema itself with clear descriptions and defaults. The description adds no value beyond what's already in the structured schema, meeting the baseline for high schema coverage.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool's purpose as 'Estimate Azure costs based on usage patterns', which includes a specific verb ('Estimate') and resource ('Azure costs'). However, it doesn't explicitly differentiate this cost estimation tool from sibling tools like azure_price_compare or azure_ri_pricing, which also deal with Azure pricing calculations.

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

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

The description provides no guidance on when to use this tool versus alternatives. With multiple sibling tools focused on Azure pricing (azure_price_compare, azure_ri_pricing, azure_sku_discovery, etc.), there's no indication of when this specific cost estimation approach is preferred or what distinguishes it from other pricing-related tools.

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

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It states the tool discovers SKUs but doesn't mention whether this is a read-only operation, if it requires authentication, rate limits, or what the output format looks like. For a tool with 4 parameters and no output schema, this leaves significant behavioral gaps.

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

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

The description is a single, efficient sentence that gets straight to the point without any wasted words. It's appropriately sized for the tool's complexity and front-loaded with the core purpose.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool has 4 parameters, no annotations, and no output schema, the description is insufficiently complete. It doesn't explain what SKUs are, how results are structured, or provide context about Azure service naming conventions. For a discovery tool with multiple siblings, more contextual information would be helpful.

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

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

Schema description coverage is 100%, so the schema already documents all parameters thoroughly. The description doesn't add any meaningful parameter semantics beyond what's in the schema (e.g., explaining what 'SKUs' are or how they relate to Azure services). The baseline of 3 is appropriate when the schema does the heavy lifting.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the action ('discover') and resource ('available SKUs for a specific Azure service'), making the purpose immediately understandable. However, it doesn't explicitly distinguish this tool from its sibling 'azure_sku_discovery', which appears to serve a similar function based on the name alone.

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

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

The description provides no guidance on when to use this tool versus alternatives like 'azure_sku_discovery' or other Azure pricing-related siblings. It mentions a specific Azure service context but offers no exclusions, prerequisites, or comparison with other tools in the server.

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

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

With no annotations provided, the description carries full burden for behavioral disclosure. While 'compare' suggests a read-only operation, it doesn't clarify whether this queries live pricing APIs, cached data, or requires authentication. It also doesn't mention rate limits, data freshness, or what format the comparison results take.

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

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

The description is a single, efficient sentence that immediately states the tool's core function. There's no wasted verbiage or unnecessary elaboration, making it easy for an agent to parse quickly.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a 6-parameter tool with no annotations and no output schema, the description is insufficient. It doesn't explain what the comparison output looks like, how results are structured, or provide context about data sources. The agent must rely entirely on the input schema without understanding the tool's behavior or results.

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

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

With 100% schema description coverage, the baseline is 3. The description adds minimal value beyond the schema, only implying that regions and SKUs are the comparison dimensions. It doesn't explain the relationship between regions and SKU parameters or provide examples of valid service/SKU names.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool's purpose as comparing Azure prices across regions or SKUs, which is a specific verb+resource combination. However, it doesn't explicitly differentiate this tool from its siblings like azure_price_search or azure_ri_pricing, which likely have overlapping price-related functionality.

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

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

The description provides no guidance on when to use this tool versus alternatives. With 12 sibling tools including azure_price_search, azure_ri_pricing, and azure_sku_discovery, the agent receives no help in selecting the appropriate price comparison tool for different scenarios.

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

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

With no annotations provided, the description carries full burden for behavioral disclosure but offers minimal information. It mentions 'various filters' but doesn't describe what the search returns (format, structure), whether it's paginated, rate limits, authentication requirements, or error conditions. For a 10-parameter tool with no annotation coverage, this is inadequate.

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

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

The description is a single, efficient sentence with zero wasted words. It's appropriately sized and front-loaded with the core purpose. Every word earns its place in this concise formulation.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the complexity (10 parameters, no annotations, no output schema, 11 sibling tools), the description is incomplete. It doesn't explain what the tool returns, how results are structured, or how it differs from similar tools. For a search tool with rich filtering options and many alternatives, more context about output and differentiation would be needed.

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

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

The schema description coverage is 100%, so all parameters are documented in the schema itself. The description adds no specific parameter information beyond mentioning 'various filters' generically. This meets the baseline of 3 when the schema does the heavy lifting, but the description doesn't compensate with additional context about how parameters interact or typical usage patterns.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the action ('Search') and resource ('Azure retail prices') with scope ('with various filters'), providing a specific verb+resource combination. However, it doesn't explicitly differentiate this tool from its many siblings (like azure_price_compare or azure_ri_pricing), which would be needed for a perfect score.

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

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

The description provides no guidance on when to use this tool versus the 11 sibling tools listed. There's no mention of alternatives, prerequisites, or specific scenarios where this search tool is preferred over other pricing/cost-related tools in the same server.

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

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It describes the calculation method ('official rounding rules'), mentions cost estimation as optional, and specifies supported deployment types. However, it doesn't address important behavioral aspects like whether this is a read-only operation, potential rate limits, authentication requirements, or what the output format looks like (though there's no output schema).

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

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

The description is efficiently structured in three sentences: first states the core purpose, second explains the calculation method and optional features, third specifies deployment type support. Every sentence adds value with zero wasted words, and the most important information (what the tool does) comes first.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a tool with 9 parameters, no annotations, and no output schema, the description provides adequate but incomplete context. It covers the purpose, calculation method, and optional features well, but doesn't address output format, error conditions, or authentication requirements. Given the complexity and lack of structured metadata, the description should do more to compensate for these gaps.

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

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

Schema description coverage is 100%, so the schema already documents all 9 parameters thoroughly. The description adds some context about workload shape parameters (RPM, tokens, caching) and cost estimation, but doesn't provide additional semantic meaning beyond what's in the parameter descriptions. The baseline of 3 is appropriate when the schema does the heavy lifting.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the specific action ('Estimate required Provisioned Throughput Units'), identifies the target resource ('Azure OpenAI / AI Foundry model deployments'), and distinguishes from siblings by focusing on PTU sizing rather than cost analysis, SKU discovery, or other Azure operations. It specifies the calculation method ('based on workload shape with official rounding rules') and optional cost estimation.

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

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

The description provides clear context about when to use this tool: for estimating PTU requirements for Azure OpenAI/AI Foundry deployments with specific workload parameters. It mentions optional cost estimation via Azure Retail Prices API, which helps differentiate from pure cost tools. However, it doesn't explicitly state when NOT to use it or name specific alternatives among the sibling tools.

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

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

With no annotations provided, the description carries full burden for behavioral disclosure. It mentions dynamic discovery and savings percentages, but lacks critical details: whether this requires authentication, rate limits, freshness of price data, whether it makes external API calls, or what format the ranked recommendations take. For a tool with 6 parameters and no annotation coverage, this is insufficient.

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

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

The description is a single, well-structured sentence that efficiently communicates the core functionality. It's appropriately sized for the tool's complexity, though it could potentially be more front-loaded by explicitly stating it's a price optimization tool earlier in the sentence.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a tool with 6 parameters, no annotations, and no output schema, the description is incomplete. It doesn't address authentication requirements, data freshness, error conditions, or the structure of returned recommendations. The agent would need to guess about critical behavioral aspects when invoking this tool.

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

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

Schema description coverage is 100%, so the schema already documents all 6 parameters thoroughly. The description adds minimal value beyond the schema - it implies the tool uses these parameters for region comparison but doesn't provide additional context about parameter interactions or edge cases. Baseline 3 is appropriate when schema does the heavy lifting.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool's purpose with specific verbs ('find', 'discovers', 'compares', 'returns') and resources ('cheapest Azure regions', 'service and SKU'). It distinguishes from siblings by focusing on region-based price comparison rather than general cost estimation or SKU discovery.

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

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

The description provides no guidance on when to use this tool versus its 11 siblings. While it mentions dynamic discovery and ranked recommendations, it doesn't specify scenarios where this is preferable to alternatives like azure_price_compare or azure_price_search, nor does it mention prerequisites or exclusions.

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

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. While 'Get' implies a read-only operation, it doesn't specify whether this requires authentication, has rate limits, returns paginated results, or provides detailed savings breakdowns. For a tool with 7 parameters and no annotation coverage, this is a significant gap in behavioral context.

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

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

The description is a single, efficient sentence that front-loads the core purpose without unnecessary words. It's appropriately sized for the tool's complexity, with every part contributing directly to understanding what the tool does.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool's complexity (7 parameters, no annotations, no output schema), the description is incomplete. It lacks guidance on usage relative to siblings, behavioral details like authentication or rate limits, and any indication of return format or error handling. This leaves significant gaps for an agent to invoke the tool correctly in context.

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

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

The description adds no parameter-specific information beyond what's already in the input schema, which has 100% coverage with detailed descriptions for all 7 parameters. The baseline score of 3 reflects that the schema adequately documents parameters, but the description doesn't enhance understanding with additional context like typical use cases or parameter interactions.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool's purpose with a specific verb ('Get') and resource ('Reserved Instance pricing and savings analysis'), making it immediately understandable. However, it doesn't explicitly differentiate this tool from its siblings like 'azure_price_compare' or 'azure_price_search', which might have overlapping functionality.

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

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

The description provides no guidance on when to use this tool versus alternatives. With multiple sibling tools related to Azure pricing and SKUs (e.g., 'azure_price_compare', 'azure_discover_skus'), there's no indication of context, prerequisites, or exclusions to help an agent choose appropriately.

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

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. It mentions 'intelligent name matching,' which hints at fuzzy search behavior, but lacks details on permissions, rate limits, error handling, or output format. For a discovery tool with no annotation coverage, this is a significant gap in transparency about how the tool operates and what to expect.

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

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

The description is a single, efficient sentence that front-loads the core purpose without unnecessary words. It directly communicates the tool's function and key feature ('intelligent name matching'), making it easy to parse and understand quickly. There's no wasted information or redundancy.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the complexity of Azure SKU discovery, no annotations, and no output schema, the description is incomplete. It doesn't explain what the output looks like (e.g., list of SKUs with details), potential limitations, or how 'intelligent name matching' works in practice. For a tool with four parameters and no structured output guidance, more context is needed to ensure effective use by an AI agent.

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

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

The input schema has 100% description coverage, providing clear details for all four parameters (e.g., 'service_hint' with fuzzy matching, optional 'region' filtering, defaults for 'currency_code' and 'limit'). The description adds minimal value beyond this, only implying the 'service_hint' parameter through 'intelligent name matching.' With high schema coverage, the baseline score of 3 is appropriate as the schema does most of the work.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool's purpose: 'Discover available SKUs for Azure services with intelligent name matching.' It specifies the verb ('discover'), resource ('SKUs for Azure services'), and a key capability ('intelligent name matching'). However, it doesn't explicitly differentiate from sibling tools like 'azure_discover_skus' or 'azure_price_search,' which appears to be a similar tool, leaving some ambiguity about uniqueness.

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

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

The description provides no guidance on when to use this tool versus alternatives. With multiple sibling tools like 'azure_discover_skus' and 'azure_price_search' that might overlap in functionality, there's no indication of specific contexts, prerequisites, or exclusions. This lack of differentiation could lead to confusion for an AI agent in selecting the appropriate tool.

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

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It effectively adds context beyond the input schema by specifying authentication requirements ('Requires Azure authentication'), the cost computation method ('via Azure Cost Management'), and the historical aspect ('real historical cost'), which are not covered in the schema. It does not fully detail output format or error handling, but provides substantial operational context.

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

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

The description is front-loaded with the core purpose in the first clause, followed by additional details in a single, efficient sentence. Every part earns its place by specifying resource types, cost computation, and authentication needs without redundancy or unnecessary elaboration, making it highly concise and well-structured.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool's complexity (detecting multiple resource types and computing costs), no annotations, and no output schema, the description does a good job by covering purpose, scope, authentication, and cost method. However, it lacks details on output format (e.g., what data is returned) and potential limitations (e.g., rate limits or errors), which would be needed for full completeness in this context.

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

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

The input schema has 100% description coverage, with clear documentation for both parameters ('days' and 'all_subscriptions'), including defaults. The description does not add any parameter-specific details beyond what the schema provides, such as explaining the implications of 'days' on cost accuracy or 'all_subscriptions' on performance. Thus, it meets the baseline of 3 without compensating for gaps, as there are none.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the specific action ('detect'), the target resources ('orphaned Azure resources'), and enumerates the resource types (unattached disks, NICs, public IPs, NSGs, empty App Service Plans). It also specifies the scope ('across subscriptions') and additional functionality ('compute their real historical cost via Azure Cost Management'), making it highly specific and distinct from sibling tools focused on pricing, SKUs, or recommendations.

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

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

The description provides clear context for when to use this tool by stating it detects orphaned resources and computes their historical cost, implying usage for cost optimization or cleanup. However, it does not explicitly mention when not to use it or name alternatives among the sibling tools, such as distinguishing from cost estimation or pricing tools, which would have earned a 5.

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

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

With no annotations provided, the description carries the full burden. It discloses the return behavior ('Returns default 10% discount for all customers'), which is valuable context beyond the input schema. However, it doesn't cover other behavioral aspects like error handling, authentication needs, or rate limits.

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

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

The description is extremely concise with two sentences that directly state the tool's function and return behavior. Every word earns its place, and it's front-loaded with the core purpose.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool has no annotations, no output schema, and a simple input schema, the description is minimally adequate. It explains what the tool does and the return value, but for a tool that seems mismatched with its Azure-focused siblings, more context about its role would improve completeness.

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

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

The schema description coverage is 100%, so the input schema already documents the optional customer_id parameter. The description adds no additional parameter semantics beyond what's in the schema, but it implies the tool works with or without the parameter by mentioning 'all customers', which aligns with the schema's optional default.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool's purpose with a specific verb ('Get') and resource ('customer discount information'), making it immediately understandable. However, it doesn't differentiate from sibling tools, which are all Azure-related while this tool appears to be customer-focused, so it misses explicit sibling distinction.

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

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

The description provides no guidance on when to use this tool versus alternatives or in what context it's appropriate. Given the sibling tools are Azure cost/price-related, this tool seems out of place, but the description doesn't clarify its relationship or usage scenarios.

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

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

With no annotations provided, the description carries full burden and discloses critical behavioral traits: it's a simulation (not actual destruction), requires specific Azure authentication, and triggers a 30-second eviction notice via Scheduled Events. However, it doesn't specify rate limits, error conditions, or what happens after the simulation.

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

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

The description is perfectly front-loaded with purpose, followed by prerequisites and behavioral details in two efficient sentences with zero wasted words, making it immediately understandable.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a single-parameter simulation tool with no annotations or output schema, the description provides good context about purpose, prerequisites, and behavioral effects. However, it lacks details about response format or post-simulation state, leaving some gaps in completeness.

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

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

Schema description coverage is 100%, so the schema fully documents the single parameter. The description adds no additional parameter semantics beyond what's in the schema, maintaining the baseline score of 3.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the specific action ('simulate eviction'), target resource ('Spot VM'), and purpose ('for testing application resilience'), distinguishing it from sibling tools focused on cost, pricing, or discovery rather than operational testing.

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

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

The description explicitly states when to use this tool ('for testing application resilience') and provides prerequisites ('Requires Azure authentication with 'Virtual Machine Contributor' role'), but does not mention when not to use it or name specific alternatives among the sibling tools.

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

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

No annotations are provided, so the description carries the full burden. It discloses authentication requirements ('Requires Azure authentication') and return format ('Returns eviction rate categories'), but does not cover other behavioral traits such as rate limits, error handling, or data freshness. The description adds some context but is incomplete for a tool with no annotations.

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

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

The description is front-loaded with the core purpose, followed by prerequisites and return details in two concise sentences. Every sentence earns its place by providing essential information without redundancy, making it efficient and well-structured.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given no annotations and no output schema, the description partially compensates by explaining authentication and return categories, but it lacks details on output structure (e.g., format of returned data), error cases, or performance considerations. For a tool with 2 parameters and no structured output, it is adequate but has clear gaps in completeness.

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

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

Schema description coverage is 100%, so the schema already documents both parameters ('skus' and 'locations') with examples. The description does not add any meaning beyond what the schema provides, as it only repeats the parameter concepts without additional syntax or format details. Baseline 3 is appropriate when schema does the heavy lifting.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool's purpose with specific verb ('Get') and resource ('Spot VM eviction rates'), and distinguishes it from siblings by focusing on eviction rates rather than pricing, discovery, or simulation. It specifies the exact data returned (eviction rate categories), making the purpose unambiguous.

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

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

The description explicitly states when to use this tool ('Get Spot VM eviction rates for specified SKUs and regions'), but does not mention when not to use it or name specific alternatives among the siblings (e.g., 'spot_price_history' or 'simulate_eviction'). It provides clear context for usage but lacks explicit exclusions or comparisons.

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

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It effectively describes authentication requirements ('Requires Azure authentication'), data scope ('Returns up to 90 days'), and the specific data type ('Spot pricing data'). It doesn't mention rate limits, error conditions, or response format details, but covers the essential operational context well.

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

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

The description is perfectly concise with three tightly-packed sentences that each serve a distinct purpose: stating the tool's function, specifying authentication requirements, and defining the data scope. Every word earns its place with zero redundancy or unnecessary elaboration.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a read-only data retrieval tool with 3 parameters and 100% schema coverage but no output schema, the description provides good context about authentication, data type, and temporal scope. It could be more complete by describing the response format or data structure, but covers the essential operational context adequately given the tool's complexity.

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

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

The schema description coverage is 100%, with all parameters well-documented in the schema. The description adds minimal value beyond the schema by mentioning that parameters are for 'a specific SKU and region' and implying 'os_type' through context, but doesn't provide additional semantic context or usage examples beyond what's already in the structured schema.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the specific action ('Get Spot VM price history'), resource ('for a specific SKU and region'), and scope ('up to 90 days of historical Spot pricing data'). It distinguishes from siblings like 'azure_price_search' or 'azure_price_compare' by focusing specifically on historical Spot pricing data rather than current pricing or comparisons.

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

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

The description implies usage context by specifying 'Requires Azure authentication' and the data type ('Spot VM price history'), but doesn't explicitly state when to use this tool versus alternatives like 'azure_price_search' or 'spot_eviction_rates'. It provides authentication prerequisites but no comparative guidance on tool selection.

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