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fabdendev

dagster-mcp

by fabdendev

search_assets

Search and list assets by name prefix or group to discover available assets in your Dagster instance.

Instructions

Search and list assets by name prefix or group. Use this to discover assets.

Returns per asset: assetKey, groupName, description, isPartitioned, op name.

  • prefix: case-insensitive substring match on any part of the asset key (e.g. 'raw_' finds 'raw_orders', 'raw_users')

  • group: exact match on groupName (case-insensitive, e.g. 'analytics')

  • Both filters can be combined.

  • If neither is passed, returns ALL assets.

When to use: to discover available assets before calling get_asset_details or get_asset_health. Use prefix for fuzzy search, group for scoped listing.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
envNo
groupNo
prefixNo

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
Behavior4/5

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

Without annotations, the description details return fields, filter behavior (case-insensitive, combined), and default behavior when no filters. It is transparent about being a read-only discovery tool, though missing authentication or rate limit info.

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?

Well-structured with clear sections for filters, returns, and usage. Concise but could be slightly more streamlined. Every sentence adds value.

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

Completeness5/5

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 covers all needed aspects: purpose, filters, behavior, and when to use. It is complete for a search tool with no missing critical information.

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

Parameters4/5

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

Schema coverage is 0%, but description explains prefix and group in detail (substring match, case-insensitive, combined). However, the 'env' parameter is not explained in the description, leaving a gap.

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 explicitly states 'Search and list assets by name prefix or group' with specific filter options. It clearly differentiates from sibling tools like get_asset_details and get_asset_health by stating it is for discovery.

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

Usage Guidelines5/5

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

Provides explicit 'When to use' guidance: 'to discover available assets before calling get_asset_details or get_asset_health'. Also advises on filter choice: 'Use prefix for fuzzy search, group for scoped listing'.

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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