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PrefectHQ

prefect-mcp-server

Official
by PrefectHQ

docs_search_prefect

Search the Prefect knowledgebase to find documentation, usage examples, and best practices for monitoring, managing, and debugging workflows.

Instructions

Search the Prefect knowledgebase for documentation on concepts, usage examples, and best practices.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
queryYesa search query to find relevant document excerpts from Prefect's knowledgebase
top_kNoHow many document excerpts to return.

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Behavior2/5

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

No annotations are provided, so the description bears full responsibility for behavioral disclosure. It only states what the tool does (search) but omits traits like rate limits, authentication needs, output format hints, or whether it's read-only. The minimal description leaves agents uninformed about side effects or constraints.

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?

Single sentence, no wasted words, front-loaded with the core action and resource. Efficient and to the point.

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

Completeness4/5

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

Given the presence of an output schema, the description need not detail return values. It adequately covers the tool's domain (concepts, usage examples, best practices). Some mention of scope (e.g., that it returns excerpts) would improve completeness, but overall sufficient.

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 the schema already documents both parameters. The description adds no further semantic detail beyond the schema's explanations (e.g., 'a search query' vs description's generic phrasing). Baseline 3 is appropriate.

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 a specific verb ('Search') and resource ('Prefect knowledgebase'), and distinguishes from sibling tools like get_flows or get_automations which retrieve specific data objects rather than documentation excerpts.

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 vs alternatives. The description does not mention when not to use it, nor does it suggest alternatives for different use cases. Given siblings cover automation, dashboard, deployments, etc., some differentiation would help.

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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