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DC Hub — Data Center & Energy Intelligence

Search Facilities

search_facilities
Read-onlyIdempotent

Find data center facilities by country, state, city, capacity (MW), operator, or fiber connectivity. Returns name, provider, power, location, and status.

Instructions

FRONT DOOR CHECK — if the ask is "find MW in " or otherwise wants power / fiber / water / verdict context ATTACHED to the hits, call execute_plan(intent="<the user's question, unchanged>") instead of hand-chaining this with three more tools. If the ask is a plain inventory lookup — which facilities match these filters — search_facilities IS the right call and costs one round trip; the planner would add steps and latency for nothing. Search 22,100+ global data center facilities across 170+ countries — by location (country/state/market), capacity (MW), operator, fiber connectivity, status (operational/under-construction/planned), or DCPI verdict. Returns name, provider, lat/lon, power_mw, fiber count, market_slug, status. Answers "which data centers are in Virginia", "who has capacity in this country". Try: search_facilities country=US state=VA min_capacity_mw=10. Note: status is RETURNED but is not a filter — there is no status or min_mw parameter; to filter by construction stage use get_pipeline. Use this to find EXISTING facilities; do NOT use for the forward-looking construction pipeline (use get_pipeline) or for the full profile of one facility (use get_facility).

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
cityNoCity name to filter facilities, e.g. Ashburn, Dallas
tierNoUptime Institute tier filter (1-4)
limitNoMax results to return (1-500; default varies by tool)
queryNoFree-text search over facility name/operator/location (mapped to the backend `q` param), e.g. "hyperscale Ashburn"
stateNoUS state abbreviation or region, e.g. VA, TX
offsetNoPagination offset, 0-based (skip this many results)
countryNoISO 3166-1 alpha-2 country code, e.g. US, GB, SG
operatorNoOperator/provider company name, e.g. Equinix, Digital Realty
max_capacity_mwNoMaximum power capacity filter in megawatts (MW)
min_capacity_mwNoMinimum power capacity filter in megawatts (MW)

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
dataNoFacility rows matching the filters
noteNoServing note (e.g. how many rows the full tier returns)
tierNoTier the response was served at
countNoRows returned in THIS response (null on some gated tiers)
quotaNoCaller quota state (remaining calls, tier) when available.
_entityNoPayload class discriminator (e.g. facility|market|iso_grid|queue_results|deal|report|response) — branch on this before parsing the rest.
successNotrue when the search executed
citationNoMachine-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.
provenanceNoCollection-level provenance block: {source, method, as_of, verification_counts, cite_url_template, license, cite_as}. Quote the verification level when citing.
_front_doorNoIn-band front-door hint (first workflow-entry tool of a session): call plan_query(intent) first for the ordered multi-step plan.
_return_loopNoSuggested next-session delta call (get_changes since=24h) so you pull only what changed.
total_matchingNoTotal rows matching the filter across the dataset (null when withheld by tier)
full_results_availableNofalse when the row set was trimmed for your tier
site_evaluation_handoffNoPre-built follow-up calls (analyze_site / get_water_risk args) when the payload carries coordinates — an array of {tool, parameters, why} entries.

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed2 schema fields changed
    • removedInput schema / $schema
      Removed value: -"http://json-schema.org/draft-07/schema#"
    • removedOutput schema / $schema
      Removed value: -"http://json-schema.org/draft-07/schema#"
  2. Changed5 schema fields changedv2.3.20
    • removedOutput schema / properties / citation / additionalProperties
      Removed value: -{}
    • addedOutput schema / properties / citation / anyOf
      Added value: +[
      +  {
      +    "additionalProperties": {},
      +    "properties": {},
      +    "type": "object"
      +  },
      +  {
      +    "type": "string"
      +  }
      +]
    • changedOutput schema / properties / citation / description
      Previous value: -"Machine-readable citation: how to attribute DC Hub (dchub.cloud) for this payload."New value: +"Machine-readable citation: how to attribute DC Hub (dchub.cloud) for this payload. Normally an OBJECT {source, url, license, cite_as, retrieved_at}; a bare string is accepted and carries the attribution line itself."
    • removedOutput schema / properties / citation / properties
      Removed value: -{}
    • removedOutput schema / properties / citation / type
      Removed value: -"object"
  3. Changed1 schema field changedv2.3.12
    • changedOutput schema / (root)
      Previous value: -nullNew value: +{
      +  "$schema": "http://json-schema.org/draft-07/schema#",
      +  "additionalProperties": {},
      +  "description": "Facility search results: `data` rows (name, provider, location, capacity on fuller tiers) alongside the DC Hub 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"
      +    },
      +    "count": {
      +      "anyOf": [
      +        {
      +          "anyOf": [
      +            {
      +              "type": "number"
      +            },
      +            {
      +              "type": "string"
      +            }
      +          ]
      +        },
      +        {
      +          "type": "null"
      +        }
      +      ],
      +      "description": "Rows returned in THIS response (null on some gated tiers)"
      +    },
      +    "data": {
      +      "anyOf": [
      +        {
      +          "items": {
      +            "additionalProperties": {},
      +            "properties": {
      +              "city": {
      +                "anyOf": [
      +                  {
      +                    "type": "string"
      +                  },
      +                  {
      +                    "type": "null"
      +                  }
      +                ],
      +                "description": "City"
      +              },
      +              "country": {
      +                "anyOf": [
      +                  {
      +                    "type": "string"
      +                  },
      +                  {
      +                    "type": "null"
      +                  }
      +                ],
      +                "description": "ISO-2 country code"
      +              },
      +              "country_name": {
      +                "anyOf": [
      +                  {
      +                    "type": "string"
      +                  },
      +                  {
      +                    "type": "null"
      +                  }
      +                ],
      +                "description": "Country full name"
      +              },
      +              "id": {
      +                "anyOf": [
      +                  {
      +                    "anyOf": [
      +                      {
      +                        "type": "number"
      +                      },
      +                      {
      +                        "type": "string"
      +                      }
      +                    ]
      +                  },
      +                  {
      +                    "type": "null"
      +                  }
      +                ],
      +                "description": "Facility id"
      +              },
      +              "lat": {
      +                "anyOf": [
      +                  {
      +                    "anyOf": [
      +                      {
      +                        "type": "number"
      +                      },
      +                      {
      +                        "type": "string"
      +                      }
      +                    ]
      +                  },
      +                  {
      +                    "type": "null"
      +                  }
      +                ],
      +                "description": "Latitude (fuller tiers)"
      +              },
      +              "location_display": {
      +                "anyOf": [
      +                  {
      +                    "type": "string"
      +                  },
      +                  {
      +                    "type": "null"
      +                  }
      +                ],
      +                "description": "Pre-formatted \"City, State, Country\" line"
      +              },
      +              "lon": {
      +                "anyOf": [
      +                  {
      +                    "anyOf": [
      +                      {
      +                        "type": "number"
      +                      },
      +                      {
      +                        "type": "string"
      +                      }
      +                    ]
      +                  },
      +                  {
      +                    "type": "null"
      +                  }
      +                ],
      +                "description": "Longitude (fuller tiers)"
      +              },
      +              "market_slug": {
      +                "anyOf": [
      +                  {
      +                    "type": "string"
      +                  },
      +                  {
      +                    "type": "null"
      +                  }
      +                ],
      +                "description": "Market slug — feed to get_market_intel / get_market_dcpi_rank (fuller tiers)"
      +              },
      +              "name": {
      +                "anyOf": [
      +                  {
      +                    "type": "string"
      +                  },
      +                  {
      +                    "type": "null"
      +                  }
      +                ],
      +                "description": "Facility name"
      +              },
      +              "power_mw": {
      +                "anyOf": [
      +                  {
      +                    "anyOf": [
      +                      {
      +                        "type": "number"
      +                      },
      +                      {
      +                        "type": "string"
      +                      }
      +                    ]
      +                  },
      +                  {
      +                    "type": "null"
      +                  }
      +                ],
      +                "description": "Power capacity in MW (fuller tiers)"
      +              },
      +              "profile_url": {
      +                "anyOf": [
      +                  {
      +                    "type": "string"
      +                  },
      +                  {
      +                    "type": "null"
      +                  }
      +                ],
      +                "description": "dchub.cloud facility page"
      +              },
      +              "provider": {
      +                "anyOf": [
      +                  {
      +                    "type": "string"
      +                  },
      +                  {
      +                    "type": "null"
      +                  }
      +                ],
      +                "description": "Operator / provider company"
      +              },
      +              "slug": {
      +                "anyOf": [
      +                  {
      +                    "type": "string"
      +                  },
      +                  {
      +                    "type": "null"
      +                  }
      +                ],
      +                "description": "URL slug — feed to get_facility for the full profile"
      +              },
      +              "state": {
      +                "anyOf": [
      +                  {
      +                    "type": "string"
      +                  },
      +                  {
      +                    "type": "null"
      +                  }
      +                ],
      +                "description": "State/region code"
      +              },
      +              "state_name": {
      +                "anyOf": [
      +                  {
      +                    "type": "string"
      +                  },
      +                  {
      +                    "type": "null"
      +                  }
      +                ],
      +                "description": "State/region full name"
      +              },
      +              "status": {
      +                "anyOf": [
      +                  {
      +                    "type": "string"
      +                  },
      +                  {
      +                    "type": "null"
      +                  }
      +                ],
      +                "description": "operational | under-construction | planned (fuller tiers)"
      +              },
      +              "v": {
      +                "anyOf": [
      +                  {
      +                    "type": "string"
      +                  },
      +                  {
      +                    "type": "null"
      +                  }
      +                ],
      +                "description": "Per-record verification flag: verified | tracked | published | inferred"
      +              }
      +            },
      +            "type": "object"
      +          },
      +          "type": "array"
      +        },
      +        {
      +          "type": "null"
      +        }
      +      ],
      +      "description": "Facility rows matching the filters"
      +    },
      +    "full_results_available": {
      +      "anyOf": [
      +        {
      +          "type": "boolean"
      +        },
      +        {
      +          "type": "null"
      +        }
      +      ],
      +      "description": "false when the row set was trimmed for your tier"
      +    },
      +    "note": {
      +      "anyOf": [
      +        {
      +          "type": "string"
      +        },
      +        {
      +          "type": "null"
      +        }
      +      ],
      +      "description": "Serving note (e.g. how many rows the full tier returns)"
      +    },
      +    "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."
      +    },
      +    "success": {
      +      "anyOf": [
      +        {
      +          "type": "boolean"
      +        },
      +        {
      +          "type": "null"
      +        }
      +      ],
      +      "description": "true when the search executed"
      +    },
      +    "tier": {
      +      "anyOf": [
      +        {
      +          "type": "string"
      +        },
      +        {
      +          "type": "null"
      +        }
      +      ],
      +      "description": "Tier the response was served at"
      +    },
      +    "total_matching": {
      +      "anyOf": [
      +        {
      +          "anyOf": [
      +            {
      +              "type": "number"
      +            },
      +            {
      +              "type": "string"
      +            }
      +          ]
      +        },
      +        {
      +          "type": "null"
      +        }
      +      ],
      +      "description": "Total rows matching the filter across the dataset (null when withheld by tier)"
      +    }
      +  },
      +  "type": "object"
      +}
  4. Changed16 schema fields changedv2.3.6
    • addedInput schema / properties / city / description
      Added value: +"City name to filter facilities, e.g. Ashburn, Dallas"
    • addedInput schema / properties / country / description
      Added value: +"ISO 3166-1 alpha-2 country code, e.g. US, GB, SG"
    • addedInput schema / properties / limit / description
      Added value: +"Max results to return (1-500; default varies by tool)"
    • changedInput schema / properties / limit / maximum
      Previous value: -9007199254740991New value: +500
    • changedInput schema / properties / limit / minimum
      Previous value: --9007199254740991New value: +1
    • addedInput schema / properties / max_capacity_mw / description
      Added value: +"Maximum power capacity filter in megawatts (MW)"
    • addedInput schema / properties / min_capacity_mw / description
      Added value: +"Minimum power capacity filter in megawatts (MW)"
    • addedInput schema / properties / offset / description
      Added value: +"Pagination offset, 0-based (skip this many results)"
    • changedInput schema / properties / offset / maximum
      Previous value: -9007199254740991New value: +100000
    • changedInput schema / properties / offset / minimum
      Previous value: --9007199254740991New value: +0
    • addedInput schema / properties / operator / description
      Added value: +"Operator/provider company name, e.g. Equinix, Digital Realty"
    • addedInput schema / properties / query / description
      Added value: +"Free-text search over facility name/operator/location (mapped to the backend `q` param), e.g. \"hyperscale Ashburn\""
    • addedInput schema / properties / state / description
      Added value: +"US state abbreviation or region, e.g. VA, TX"
    • addedInput schema / properties / tier / description
      Added value: +"Uptime Institute tier filter (1-4)"
    • changedInput schema / properties / tier / maximum
      Previous value: -9007199254740991New value: +4
    • changedInput schema / properties / tier / minimum
      Previous value: --9007199254740991New value: +1
  5. First observedv2.1.19

TDQS

A4.6/5.0
Behavior4/5

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

Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, so the safety profile is covered. The description adds valuable behavioral nuance beyond annotations: 'status is RETURNED but is not a filter,' there is no `status` or `min_mw` parameter, and the tool covers only EXISTING facilities rather than the forward-looking pipeline. It also notes the round-trip cost advantage over the planner, which is useful latency context.

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

Conciseness4/5

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

The description is longer than average, but it earns its length: each section — front-door routing, capability summary, return fields, example, and exclusions — serves a distinct purpose. The most critical decision guidance is front-loaded in the FRONT DOOR CHECK, and the example and warnings add practical value without fluff.

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?

Given the 10-parameter schema, output schema, and annotations, the description is complete. It explains scope, returned fields, filter limitations, alternatives, and an example, while relying on the schema for pagination details. Nothing an agent needs to choose and invoke this tool correctly is missing.

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

Parameters4/5

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

Schema coverage is 100% with detailed descriptions for all 10 parameters, so the baseline is 3. The description goes beyond by clarifying that `status` and `min_mw` are not valid filters even though status is returned, which prevents a common misuse. It also provides a concrete example call mapping filters to parameters (country=US state=VA min_capacity_mw=10).

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: 'Search 22,100+ global data center facilities across 170+ countries.' It lists concrete filter dimensions (location, capacity, operator, fiber connectivity, status) and the exact fields returned, and it differentiates itself by name from siblings like get_pipeline and get_facility. The 'Answers "which data centers are in Virginia"' example makes the query intent unmistakable.

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?

The description opens with a 'FRONT DOOR CHECK' that explicitly routes complex asks (power/fiber/water/verdict context) to execute_plan and reserves search_facilities for plain inventory lookups. It further names get_pipeline for construction-stage filtering and get_facility for full profiles, giving both when-to-use and when-not-to-use guidance with concrete alternatives.

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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