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Data Cityofchicago

by io.github.pipeworx-io
OverviewDiscussionsAdmin

Metadata

metadata
Read-onlyIdempotent

Resource metadata.

Example tool call

This call uses example arguments supplied in the tool’s input schema.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "resource_id": "a9u6-brt9"
    },
    "name": "metadata"
  }
}

Input Schema

NameRequiredDescriptionDefault
resource_idYes

Output Schema

NameRequiredDescriptionDefault
idNoResource identifier
nameNoResource name
columnsNoColumn definitions
descriptionNoResource description

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed2 schema fields changed
    • addedInput schema / examples
      Added value: +[
+  {
+    "resource_id": "a9u6-brt9"
+  }
+]
    • changedOutput schema / (root)
      Previous value: -nullNew value: +{
+  "description": "Resource metadata from Socrata",
+  "properties": {
+    "columns": {
+      "description": "Column definitions",
+      "items": {
+        "description": "Column metadata",
+        "type": "object"
+      },
+      "type": "array"
+    },
+    "description": {
+      "description": "Resource description",
+      "type": "string"
+    },
+    "id": {
+      "description": "Resource identifier",
+      "type": "string"
+    },
+    "name": {
+      "description": "Resource name",
+      "type": "string"
+    }
+  },
+  "type": "object"
+}
  2. First observed

TDQS

D1.5/5.0
Behavior2/5

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

While annotations indicate a safe, read-only operation, the description adds no behavioral context beyond that. It does not explain what metadata entails or any side effects, but does not contradict annotations.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness1/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is extremely short, but this is under-specification rather than conciseness. It lacks any useful structure or front-loading of information.

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

Completeness1/5

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

Given the single required parameter and presence of an output schema, the description is wholly incomplete. It does not inform the agent about what the tool returns or how to effectively use it.

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

Parameters1/5

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

The description does not mention the resource_id parameter or its purpose. With 0% schema description coverage, the description fails to add any meaning beyond the schema's minimal definition.

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

Purpose2/5

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

The description 'Resource metadata.' is vague and lacks a verb. It does not specify whether the tool retrieves, updates, or performs another action. It provides minimal purpose clarity.

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

Usage Guidelines1/5

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 such as query or entity_profile. The description offers no context for appropriate usage.

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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