Public Data Catalog
Reviewed public-data search and execution with provenance and verifiable integrity receipts.
Should I use this
Quality & Safety
A
Based on automated analysis of tool definitions and protocol compliance.
Context Cost
~918Tokens (tool definitions)
~2.9 KBTypical response size
Moderate attention impact (0.72% of 128k context)
This is the approximate number of tokens consumed each time the server's tools are loaded into a model's context. Higher counts reduce the attention available for other tasks.
Install
One-Click Install
Add this to your `claude_desktop_config.json` file:
{
"mcpServers": {
"public-data-catalog": {
"url": "https://public-data-catalog-mcp.yusuke8h.workers.dev/mcp"
}
}
}Remote endpoints
https://public-data-catalog-mcp.yusuke8h.workers.dev/mcpstreamable-httpWhat it can do
Tool inventory
Tools (3)
🟢 Read-only🟡 Write🔴 Delete⚪ Unknown
🟢search_data(query, kind, limit)
Search current metadata from e-Gov Data Portal and Statistics Dashboard, then return a short ranked list with publisher, formats, coverage, usage terms, and official links.
Input Schema
{
"type": "object",
"properties": {
"query": {
"type": "string",
"minLength": 2,
"maxLength": 80,
"description": "What data to find, preferably in Japanese"
},
"kind": {
"default": "all",
"description": "Search all sources, downloadable datasets, or statistical series",
"type": "string",
"enum": [
"all",
"dataset",
"statistics"
]
},
"limit": {
"default": 10,
"type": "integer",
"minimum": 1,
"maximum": 20
}
},
"required": [
"query"
],
"$schema": "http://json-schema.org/draft-07/schema#"
}Output Schema
{
"type": "object",
"properties": {
"status": {
"type": "string",
"const": "ok"
},
"query": {
"type": "string"
},
"interpreted_as": {
"type": "array",
"items": {
"type": "string"
}
},
"searched_at": {
"type": "string"
},
"results": {
"type": "array",
"items": {}
},
"total": {
"type": "integer",
"minimum": 0,
"maximum": 9007199254740991
},
"available": {
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {}
},
"sources": {
"type": "array",
"items": {}
},
"note": {
"type": "string"
}
},
"required": [
"status",
"query",
"interpreted_as",
"searched_at",
"results",
"total",
"available",
"sources",
"note"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": false
}🟢execute(recipeId, parameters)
Run one allowlisted, bounded HTTPS GET contract and return extracted values, provenance, and an integrity receipt.
Input Schema
{
"type": "object",
"properties": {
"recipeId": {
"type": "string",
"minLength": 1,
"maxLength": 100
},
"parameters": {
"type": "object",
"propertyNames": {
"type": "string",
"pattern": "^[a-z0-9][a-z0-9-]+$"
},
"additionalProperties": {
"type": "integer",
"minimum": -9007199254740991,
"maximum": 9007199254740991
}
}
},
"required": [
"recipeId"
],
"$schema": "http://json-schema.org/draft-07/schema#"
}Output Schema
{
"type": "object",
"properties": {
"status": {
"type": "string",
"const": "ok"
},
"recipe_id": {
"type": "string"
},
"contract_version": {
"type": "string"
},
"question": {
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {}
},
"parameters": {
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {}
},
"retrieved_at": {
"type": "string"
},
"elapsed_ms": {
"type": "integer",
"minimum": 0,
"maximum": 9007199254740991
},
"request_url": {
"type": "string"
},
"results": {
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {}
},
"interpretation": {
"type": "array",
"items": {
"type": "string"
}
},
"provenance": {
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {}
},
"receipt": {
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {}
}
},
"required": [
"status",
"recipe_id",
"contract_version",
"question",
"parameters",
"retrieved_at",
"elapsed_ms",
"request_url",
"results",
"interpretation",
"provenance",
"receipt"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": false
}🟢verify(execution)
Check receipt and result hashes plus the execution envelope against the reviewed catalog. This detects later modification; it does not prove publisher authenticity or current freshness.
Input Schema
{
"type": "object",
"properties": {
"execution": {
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {}
}
},
"required": [
"execution"
],
"$schema": "http://json-schema.org/draft-07/schema#"
}Output Schema
{
"type": "object",
"properties": {
"valid": {
"type": "boolean"
},
"receipt_id": {
"type": "string"
},
"checks": {
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {}
}
},
"required": [
"valid",
"receipt_id",
"checks"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": false
}Community
Evidence
Recent observations
verifiedversion not recorded3 tools
verifiedversion not recorded3 tools