PubFi MCP

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

With no annotations, the description should disclose behavioral traits. Instead, it reveals nothing about side effects, safety, idempotency, or whether the tool is read-only. The agent has no information on potential impacts.

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 sentence, but it is under-specified rather than concise. It wastes the only sentence by repeating the tool name without adding actionable information. A good description would be equally short but informative.

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?

Despite having no parameters or output schema, the description fails to provide any contextual completeness. It does not explain what 'capabilities' are, how to interpret results, or how this tool fits into the broader PubFi ecosystem (e.g., pricing, routing). The agent cannot use this tool effectively.

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 allows arbitrary properties (additionalProperties: true), but the description does not explain what parameters are meaningful for a search (e.g., query, filters). Schema coverage is 100% only because there are no defined parameters, but the description adds no value beyond the 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 'Generic PubFi tool pubfi.capabilities.search' is a tautology that restates the tool name without indicating what the tool does. It fails to specify the verb (search) and resource (capabilities) in a meaningful way, and does not distinguish it from sibling tools like pubfi.pricing.quote or pubfi.route.plan.

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?

No guidance is provided on when to use this tool versus alternatives. The description lacks any context about prerequisites, typical use cases, or scenarios to avoid. Sibling tools exist but no differentiation is offered.

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 exist, and the description does not disclose any behavioral traits (e.g., side effects, authentication needs, rate limits). The description is entirely uninformative.

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?

While short, the description is not concise in a helpful sense; it is under-specified. It provides no valuable information and reduces to a definitional empty statement.

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 (open input schema, no output schema, no annotations), the description is completely inadequate. It does not address what the tool returns, how to invoke it, or any behavioral 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 zero parameters with 100% schema coverage trivially. However, the description adds no meaning beyond the schema, and for a tool with no parameters, the description should ideally clarify the input expectations (e.g., that no parameters are needed or what the free-form object is for). It does not.

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 is a tautology: 'Generic PubFi tool pubfi.pricing.quote' simply restates the tool name without indicating what action it performs or what resource it acts on. It fails to distinguish the tool from siblings like pubfi.capabilities.search or pubfi.route.execute.

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?

No guidance is provided on when to use this tool versus its siblings. There is no mention of context, prerequisites, or alternatives.

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 and a description that only repeats the name, there is no disclosure of behavioral traits such as side effects, authorization needs, rate limits, or output format. The description adds zero value beyond the name.

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 short (one sentence) but is under-specification rather than concise. It fails to convey essential information, and every sentence should earn its place; this one does not.

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 open schema and lack of annotations or output schema, the description is severely incomplete. It provides no context about inputs, outputs, or behavior, making it almost useless for an 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 no defined parameters (additionalProperties: true but no spec), and schema description coverage is 100% because there are no parameters to describe. Therefore, the baseline is 3. The description does not add any parameter meaning beyond the 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 'Generic PubFi tool pubfi.route.execute' is a tautology that merely repeats the tool name without stating what the tool does or what resource it acts upon. It fails to provide any specific verb or resource, making it impossible for an agent to discern its purpose.

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 offers no guidance on when to use this tool versus its siblings (e.g., pubfi.route.explain, pubfi.route.plan). There is no mention of context, prerequisites, or alternatives, leaving the agent without any decision framework.

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, the description should disclose behavioral traits. It merely labels the tool as 'generic' without stating whether it reads, writes, or has side effects. No information about prerequisites, data mutability, or return behavior is given.

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 too short to be considered concise; it is underspecified. It contains a single phrase that repeats the tool name without any valuable structure or front-loading of information.

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 lack of annotations, output schema, and the generic name, the description is completely inadequate. It fails to provide any context about what 'explain' means, what inputs it accepts, or what outputs it produces.

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?

Although the input schema has 0 parameters (schema coverage 100% trivially), the description adds no meaning about expected input. A baseline of 3 is appropriate for high coverage, but the vague description detracts from any potential value, earning a 2.

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 'Generic PubFi tool pubfi.route.explain' is a tautology, restating the tool name and adding no specific verb or resource. It fails to indicate what the tool does, making it impossible for an agent to understand its purpose.

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?

No guidance is provided on when to use this tool versus its siblings (e.g., pubfi.route.plan, pubfi.route.execute). The description lacks any context about appropriate scenarios or alternatives.

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 exist, so the description carries full disclosure burden. The vague 'Generic PubFi tool' label provides no behavioral insight—e.g., whether this tool is read-only, destructive, or requires authentication—and may mislead by implying a generic purpose.

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?

While the description is short, it is not appropriately sized—it lacks necessary detail. Every word is wasted in a tautology, failing to earn its place by providing any actionable information.

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 name implies route planning, the description is grossly incomplete. No output schema or behavioral details are provided, making it impossible for an agent to understand the tool's purpose or correct usage.

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?

Although there are zero defined parameters, the schema accepts arbitrary additional properties (additionalProperties: true). The description does not explain this open schema or suggest what parameters might be passed, leaving agents without guidance for invocation.

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 'Generic PubFi tool pubfi.route.plan' is a tautology that merely restates the tool name. It does not specify any action, resource, or distinguish this tool from siblings like pubfi.route.execute or pubfi.pricing.quote.

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?

No usage guidance is provided. The description fails to indicate when to use this tool compared to alternatives such as pubfi.route.explain or pubfi.route.execute, leaving an AI agent without contextual cues.

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 present, and the description does not disclose any behavioral traits, side effects, permissions, or return value characteristics. The tool's behavior is completely opaque.

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 short, but it sacrifices informativeness for brevity. It is under-specified rather than concise, providing no actionable information.

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?

With no output schema, no annotations, and a minimal description, the description fails to provide sufficient context for an AI agent to understand the tool's purpose, inputs, or outputs. It is completely inadequate for a tool with any functionality.

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?

Although the tool has no defined parameters (schema coverage 100% with no properties), the description adds no meaning about expected inputs. It could have clarified that no parameters are needed or that arbitrary parameters are accepted, but it does not.

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 is 'Generic PubFi tool pubfi.schema.get', which is a tautology that merely restates the tool name. It does not specify what the tool does, such as retrieving a schema or providing metadata.

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?

No guidance is provided on when to use this tool versus its siblings (e.g., pubfi.capabilities.search, pubfi.route.plan). The description lacks any context about appropriate scenarios or alternatives.

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