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Skeego

opendata-mcp

by Skeego

get_subgraph_v1_graph_subgraph_get

Retrieve a subgraph from the OpenData graph explorer. Without seed parameters, returns a sample. For dataset seeds, use 'provider/slug' format.

Instructions

GET /v1/graph/subgraph (public) — Get Subgraph — Get a seeded subgraph for the graph explorer.

When seed_type/seed_id are omitted, returns a sample of the full graph. For dataset seeds, seed_id should be 'provider/slug' (e.g. 'bls/cpi-u').

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
seed_typeNoNode label for the seed (Dataset, Topic, etc.)
seed_idNoIdentifier of the seed node
depthNo
limitNo
Behavior3/5

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

Discloses the method is GET and public, and describes behavior when parameters are omitted. Does not explicitly state read-only nature or other constraints, but annotations are absent so description carries full burden.

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?

Very concise: three sentences covering endpoint, purpose, and key parameter behaviors. No unnecessary words.

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

Completeness3/5

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

Adequate for basic use but lacks description of output format and does not address two parameters. Given no output schema, more detail on return structure would improve completeness.

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?

Adds meaning to seed_type and seed_id by explaining omission behavior and format, but ignores depth and limit. Schema coverage is 50% and description compensates partially but incompletely.

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

Purpose4/5

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

Clearly states it gets a seeded subgraph for the graph explorer, specifying it's a GET endpoint. Slightly docked because it does not differentiate from sibling graph tools like get_bridges or get_neighbors.

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

Usage Guidelines3/5

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

Provides use case for omitting parameters and gives format for dataset seeds. Lacks explicit guidance on when not to use or alternatives among siblings.

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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