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DC Hub: Data Center, Power Grid & Energy Intelligence

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Read-onlyIdempotent

Find data-center facilities by free-text query and return matching IDs with URLs to fetch details or cite live facility pages.

Instructions

Use this when a Deep Research or ChatGPT-connector client needs a data center facility search (search/fetch format). Returns a list of matching data-center facilities as {id, title, url}; pass an id to the fetch tool for the record, or open the url to cite the live facility page. For structured queries (by MW, operator, status, market) use search_facilities directly.

Input Schema

NameRequiredDescriptionDefault
queryYesFree-text query, e.g. "data centers in Northern Virginia" or "Ashburn hyperscale power"

Output Schema

NameRequiredDescriptionDefault

No arguments

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed9 schema fields changedv2.12.45
    • changedOutput schema / additionalProperties
      Previous value: -{}New value: +true
    • removedOutput schema / description
      Removed value: -"DC Hub envelope: tool data fields ride at the top level beside these keys."
    • removedOutput schema / properties / _entity
      Removed value: -{
      -  "description": "Payload class (facility|market|iso_grid|queue_results|deal|report|response); branch on it.",
      -  "type": "string"
      -}
    • removedOutput schema / properties / _front_door
      Removed value: -{
      -  "additionalProperties": {},
      -  "description": "First-tool hint: plan_query(intent) returns the ordered plan.",
      -  "properties": {},
      -  "type": "object"
      -}
    • removedOutput schema / properties / _return_loop
      Removed value: -{
      -  "additionalProperties": {},
      -  "description": "Next-session delta call (get_changes).",
      -  "properties": {},
      -  "type": "object"
      -}
    • removedOutput schema / properties / citation
      Removed value: -{
      -  "anyOf": [
      -    {
      -      "additionalProperties": {},
      -      "properties": {},
      -      "type": "object"
      -    },
      -    {
      -      "type": "string"
      -    }
      -  ],
      -  "description": "How to attribute DC Hub: {source, url, license, cite_as, retrieved_at}, or the attribution line as a string."
      -}
    • removedOutput schema / properties / provenance
      Removed value: -{
      -  "additionalProperties": {},
      -  "description": "Source, method, as_of, verification_counts, license, cite_as; quote it when citing.",
      -  "properties": {},
      -  "type": "object"
      -}
    • removedOutput schema / properties / quota
      Removed value: -{
      -  "additionalProperties": {},
      -  "description": "Caller quota state (remaining calls, tier).",
      -  "properties": {},
      -  "type": "object"
      -}
    • removedOutput schema / properties / site_evaluation_handoff
      Removed value: -{
      -  "anyOf": [
      -    {
      -      "items": {
      -        "additionalProperties": {},
      -        "properties": {},
      -        "type": "object"
      -      },
      -      "type": "array"
      -    },
      -    {
      -      "additionalProperties": {},
      -      "properties": {},
      -      "type": "object"
      -    }
      -  ],
      -  "description": "Follow-up calls [{tool, parameters, why}] when the payload carries coordinates."
      -}
  2. Changed8 schema fields changedv2.12.43
    • changedOutput schema / description
      Previous value: -"DC Hub envelope: structuredContent mirrors the JSON payload in content[0].text — tool-specific data fields ride at the top level alongside these envelope keys."New value: +"DC Hub envelope: tool data fields ride at the top level beside these keys."
    • changedOutput schema / properties / _entity / description
      Previous value: -"Payload class discriminator (e.g. facility|market|iso_grid|queue_results|deal|report|response) — branch on this before parsing the rest."New value: +"Payload class (facility|market|iso_grid|queue_results|deal|report|response); branch on it."
    • changedOutput schema / properties / _front_door / description
      Previous value: -"In-band front-door hint (first workflow-entry tool of a session): call plan_query(intent) first for the ordered multi-step plan."New value: +"First-tool hint: plan_query(intent) returns the ordered plan."
    • changedOutput schema / properties / _return_loop / description
      Previous value: -"Suggested next-session delta call (get_changes since=24h) so you pull only what changed."New value: +"Next-session delta call (get_changes)."
    • changedOutput schema / properties / citation / description
      Previous value: -"Machine-readable citation: how to attribute DC Hub (dchub.cloud) for this payload. Normally an OBJECT {source, url, license, cite_as, retrieved_at}; a bare string is accepted and carries the attribution line itself."New value: +"How to attribute DC Hub: {source, url, license, cite_as, retrieved_at}, or the attribution line as a string."
    • changedOutput schema / properties / provenance / description
      Previous value: -"Collection-level provenance block: {source, method, as_of, verification_counts, cite_url_template, license, cite_as}. Quote the verification level when citing."New value: +"Source, method, as_of, verification_counts, license, cite_as; quote it when citing."
    • changedOutput schema / properties / quota / description
      Previous value: -"Caller quota state (remaining calls, tier) when available."New value: +"Caller quota state (remaining calls, tier)."
    • changedOutput schema / properties / site_evaluation_handoff / description
      Previous value: -"Pre-built follow-up calls (analyze_site / get_water_risk args) when the payload carries coordinates — an array of {tool, parameters, why} entries."New value: +"Follow-up calls [{tool, parameters, why}] when the payload carries coordinates."
  3. Changed2 schema fields changed
    • removedInput schema / $schema
      Removed value: -"http://json-schema.org/draft-07/schema#"
    • removedOutput schema / $schema
      Removed value: -"http://json-schema.org/draft-07/schema#"
  4. Changed5 schema fields changedv2.3.20
    • removedOutput schema / properties / citation / additionalProperties
      Removed value: -{}
    • addedOutput schema / properties / citation / anyOf
      Added value: +[
      +  {
      +    "additionalProperties": {},
      +    "properties": {},
      +    "type": "object"
      +  },
      +  {
      +    "type": "string"
      +  }
      +]
    • changedOutput schema / properties / citation / description
      Previous value: -"Machine-readable citation: how to attribute DC Hub (dchub.cloud) for this payload."New value: +"Machine-readable citation: how to attribute DC Hub (dchub.cloud) for this payload. Normally an OBJECT {source, url, license, cite_as, retrieved_at}; a bare string is accepted and carries the attribution line itself."
    • removedOutput schema / properties / citation / properties
      Removed value: -{}
    • removedOutput schema / properties / citation / type
      Removed value: -"object"
  5. Changed1 schema field changedv2.3.12
    • changedOutput schema / (root)
      Previous value: -nullNew value: +{
      +  "$schema": "http://json-schema.org/draft-07/schema#",
      +  "additionalProperties": {},
      +  "description": "DC Hub envelope: structuredContent mirrors the JSON payload in content[0].text — tool-specific data fields ride at the top level alongside these envelope keys.",
      +  "properties": {
      +    "_entity": {
      +      "description": "Payload class discriminator (e.g. facility|market|iso_grid|queue_results|deal|report|response) — branch on this before parsing the rest.",
      +      "type": "string"
      +    },
      +    "_front_door": {
      +      "additionalProperties": {},
      +      "description": "In-band front-door hint (first workflow-entry tool of a session): call plan_query(intent) first for the ordered multi-step plan.",
      +      "properties": {},
      +      "type": "object"
      +    },
      +    "_return_loop": {
      +      "additionalProperties": {},
      +      "description": "Suggested next-session delta call (get_changes since=24h) so you pull only what changed.",
      +      "properties": {},
      +      "type": "object"
      +    },
      +    "citation": {
      +      "additionalProperties": {},
      +      "description": "Machine-readable citation: how to attribute DC Hub (dchub.cloud) for this payload.",
      +      "properties": {},
      +      "type": "object"
      +    },
      +    "provenance": {
      +      "additionalProperties": {},
      +      "description": "Collection-level provenance block: {source, method, as_of, verification_counts, cite_url_template, license, cite_as}. Quote the verification level when citing.",
      +      "properties": {},
      +      "type": "object"
      +    },
      +    "quota": {
      +      "additionalProperties": {},
      +      "description": "Caller quota state (remaining calls, tier) when available.",
      +      "properties": {},
      +      "type": "object"
      +    },
      +    "site_evaluation_handoff": {
      +      "anyOf": [
      +        {
      +          "items": {
      +            "additionalProperties": {},
      +            "properties": {},
      +            "type": "object"
      +          },
      +          "type": "array"
      +        },
      +        {
      +          "additionalProperties": {},
      +          "properties": {},
      +          "type": "object"
      +        }
      +      ],
      +      "description": "Pre-built follow-up calls (analyze_site / get_water_risk args) when the payload carries coordinates — an array of {tool, parameters, why} entries."
      +    }
      +  },
      +  "type": "object"
      +}
  6. Addedv2.3.6

TDQS

A4.5/5.0
Behavior4/5

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

Annotations already establish readOnly, openWorld, idempotent, and non-destructive behavior. The description adds useful workflow context beyond annotations: results are {id, title, url}, ids can be passed to fetch, and urls can be opened for citation. It does not cover auth or rate limits, but those are not central for this search tool.

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?

The description is front-loaded with the use case, then gives return shape and next steps, then names the structured-query alternative. Every sentence adds actionable information with no repetition.

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?

For a one-parameter search tool with rich annotations and an output schema, the description covers purpose, usage, return shape, follow-up actions, and alternatives. Nothing needed to invoke or route the tool correctly is missing.

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?

Schema coverage is 100%, and the single query parameter is already documented with free-text examples. The description implies this is a free-text search by contrasting it with structured search_facilities queries, but it does not add syntax or format details beyond the schema.

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 states a specific verb and resource: a data center facility search that returns matching facilities as {id, title, url}. It also distinguishes this tool from search_facilities and from fetch, so an agent can identify its role without inspecting the schema.

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?

It explicitly says when to use this tool: when a Deep Research or ChatGPT-connector client needs search/fetch format. It also names the alternative for structured queries by MW, operator, status, or market: use search_facilities directly.

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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