get_projectLook up a single NCI GDC project by project_id (e.g. "TCGA-BRCA") and get its details plus summary counts (case_count, file_count). Keyless, open-access metadata.
| Name | Required | Description | Default |
|---|---|---|---|
| project_id | Yes | GDC project id, e.g. "TCGA-BRCA", "TARGET-AML". |
Changes observed during successful MCP inspections.
Input schema / examplesAdded value: +[
+ {
+ "project_id": "TCGA-BRCA"
+ },
+ {
+ "project_id": "TARGET-AML"
+ }
+]Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare idempotent, read-only, non-destructive. The description adds that it returns summary counts and notes 'keyless, open-access metadata,' which is useful 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?
Two straightforward sentences, front-loaded with core action. No unnecessary words.
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 a simple lookup with one parameter, rich annotations, and no output schema, the description adequately explains return values (details plus summary counts) and access requirements.
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 coverage is 100% with a clear parameter description and examples. The description repeats the purpose but does not add new semantic detail 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 clearly states the tool looks up a single NCI GDC project by project_id and returns details plus summary counts. It gives a concrete example (TCGA-BRCA) and distinguishes from list_projects by focusing on single project lookup.
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 implicitly indicates use for single project lookups but does not explicitly state when not to use or name alternatives like list_projects. However, the context of sibling tools makes it clear.
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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