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Search Facilities

search_facilities
Read-onlyIdempotent

Use this when the user asks which data centers exist, or who operates in a city, state or country; filters: country, state, city, operator, MW range, tier or text. Returns name, operator, location, market, status and MW where disclosed; each row is flagged verified or unverified_directory_listing. Free: names and locations; MW and specs need a paid key. Ex: "Equinix sites in Virginia over 10 MW." Start here for a facility slug. No match = empty data, not an error: broaden filters. limit 1-500 (free tier 25); page with offset.

Input 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
mpp_payNoPer-call payment quote (Stripe MPP): true returns a signed payment challenge instead of the free preview; no money moves. Set it only after your human has explicitly approved paying for this call.
operatorNoOperator/provider company name, e.g. Equinix, Digital Realty
mpp_credentialNoPer-call payment (Stripe MPP): the Shared Payment Token for challenges[0]; pays that challenge for this one call. Send it only with your human's explicit approval of the charge.
max_capacity_mwNoMaximum power capacity filter in megawatts (MW)
min_capacity_mwNoMinimum power capacity filter in megawatts (MW)

Output Schema

NameRequiredDescriptionDefault
dataNo
noteNo
tierNo
countNo
successNo
total_matchingNo
full_results_availableNo

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed2 schema fields changed
    • addedInput schema / properties / mpp_credential
      Added value: +{
      +  "description": "Per-call payment (Stripe MPP): the Shared Payment Token for challenges[0]; pays that challenge for this one call. Send it only with your human's explicit approval of the charge.",
      +  "type": "string"
      +}
    • addedInput schema / properties / mpp_pay
      Added value: +{
      +  "description": "Per-call payment quote (Stripe MPP): true returns a signed payment challenge instead of the free preview; no money moves. Set it only after your human has explicitly approved paying for this call.",
      +  "type": "boolean"
      +}
  2. Changed2 schema fields changed
    • removedInput schema / properties / mpp_credential
      Removed value: -{
      -  "description": "Per-call payment (Stripe MPP): the Shared Payment Token for challenges[0]; pays that challenge for this one call. Send it only with your human's explicit approval of the charge.",
      -  "type": "string"
      -}
    • removedInput schema / properties / mpp_pay
      Removed value: -{
      -  "description": "Per-call payment quote (Stripe MPP): true returns a signed payment challenge instead of the free preview; no money moves. Set it only after your human has explicitly approved paying for this call.",
      -  "type": "boolean"
      -}
  3. Changed2 schema fields changed
    • changedInput schema / properties / mpp_credential / description
      Previous value: -"Stripe MPP step 2: the Shared Payment Token minted for challenges[0]; pays that challenge for this one call."New value: +"Per-call payment (Stripe MPP): the Shared Payment Token for challenges[0]; pays that challenge for this one call. Send it only with your human's explicit approval of the charge."
    • changedInput schema / properties / mpp_pay / description
      Previous value: -"Stripe MPP step 1: true returns a signed per-call payment challenge (a quote; no money moves) instead of the free preview. Agents only."New value: +"Per-call payment quote (Stripe MPP): true returns a signed payment challenge instead of the free preview; no money moves. Set it only after your human has explicitly approved paying for this call."
  4. Changed7 schema fields changed
    • removedOutput schema / properties / _entity
      Removed value: -{
      -  "type": "string"
      -}
    • removedOutput schema / properties / _front_door
      Removed value: -{
      -  "type": "object"
      -}
    • removedOutput schema / properties / _return_loop
      Removed value: -{
      -  "type": "object"
      -}
    • removedOutput schema / properties / citation
      Removed value: -{}
    • removedOutput schema / properties / provenance
      Removed value: -{
      -  "type": "object"
      -}
    • removedOutput schema / properties / quota
      Removed value: -{
      -  "type": "object"
      -}
    • removedOutput schema / properties / site_evaluation_handoff
      Removed value: -{}
  5. Changed33 schema fields changed
    • changedOutput schema / additionalProperties
      Previous value: -{}New value: +true
    • removedOutput schema / description
      Removed value: -"Facility search results: `data` rows (name, provider, location, capacity on fuller tiers) alongside the DC Hub envelope keys."
    • removedOutput schema / properties / _entity / description
      Removed value: -"Payload class (facility|market|iso_grid|queue_results|deal|report|response); branch on it."
    • removedOutput schema / properties / _front_door / additionalProperties
      Removed value: -{}
    • removedOutput schema / properties / _front_door / description
      Removed value: -"First-tool hint: plan_query(intent) returns the ordered plan."
    • removedOutput schema / properties / _front_door / properties
      Removed value: -{}
    • removedOutput schema / properties / _return_loop / additionalProperties
      Removed value: -{}
    • removedOutput schema / properties / _return_loop / description
      Removed value: -"Next-session delta call (get_changes)."
    • removedOutput schema / properties / _return_loop / properties
      Removed value: -{}
    • removedOutput schema / properties / citation / anyOf
      Removed value: -[
      -  {
      -    "additionalProperties": {},
      -    "properties": {},
      -    "type": "object"
      -  },
      -  {
      -    "type": "string"
      -  }
      -]
    • removedOutput schema / properties / citation / description
      Removed value: -"How to attribute DC Hub: {source, url, license, cite_as, retrieved_at}, or the attribution line as a string."
    • removedOutput schema / properties / count / anyOf
      Removed value: -[
      -  {
      -    "anyOf": [
      -      {
      -        "type": "number"
      -      },
      -      {
      -        "type": "string"
      -      }
      -    ]
      -  },
      -  {
      -    "type": "null"
      -  }
      -]
    • removedOutput schema / properties / count / description
      Removed value: -"Rows returned in THIS response (null on some gated tiers)"
    • removedOutput schema / properties / data / anyOf
      Removed value: -[
      -  {
      -    "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"
      -  }
      -]
    • removedOutput schema / properties / data / description
      Removed value: -"Facility rows matching the filters"
    • removedOutput schema / properties / full_results_available / anyOf
      Removed value: -[
      -  {
      -    "type": "boolean"
      -  },
      -  {
      -    "type": "null"
      -  }
      -]
    • removedOutput schema / properties / full_results_available / description
      Removed value: -"false when the row set was trimmed for your tier"
    • removedOutput schema / properties / note / anyOf
      Removed value: -[
      -  {
      -    "type": "string"
      -  },
      -  {
      -    "type": "null"
      -  }
      -]
    • removedOutput schema / properties / note / description
      Removed value: -"Serving note (e.g. how many rows the full tier returns)"
    • removedOutput schema / properties / provenance / additionalProperties
      Removed value: -{}
    • removedOutput schema / properties / provenance / description
      Removed value: -"Source, method, as_of, verification_counts, license, cite_as; quote it when citing."
    • removedOutput schema / properties / provenance / properties
      Removed value: -{}
    • removedOutput schema / properties / quota / additionalProperties
      Removed value: -{}
    • removedOutput schema / properties / quota / description
      Removed value: -"Caller quota state (remaining calls, tier)."
    • removedOutput schema / properties / quota / properties
      Removed value: -{}
    • removedOutput schema / properties / site_evaluation_handoff / anyOf
      Removed value: -[
      -  {
      -    "items": {
      -      "additionalProperties": {},
      -      "properties": {},
      -      "type": "object"
      -    },
      -    "type": "array"
      -  },
      -  {
      -    "additionalProperties": {},
      -    "properties": {},
      -    "type": "object"
      -  }
      -]
    • removedOutput schema / properties / site_evaluation_handoff / description
      Removed value: -"Follow-up calls [{tool, parameters, why}] when the payload carries coordinates."
    • removedOutput schema / properties / success / anyOf
      Removed value: -[
      -  {
      -    "type": "boolean"
      -  },
      -  {
      -    "type": "null"
      -  }
      -]
    • removedOutput schema / properties / success / description
      Removed value: -"true when the search executed"
    • removedOutput schema / properties / tier / anyOf
      Removed value: -[
      -  {
      -    "type": "string"
      -  },
      -  {
      -    "type": "null"
      -  }
      -]
    • removedOutput schema / properties / tier / description
      Removed value: -"Tier the response was served at"
    • removedOutput schema / properties / total_matching / anyOf
      Removed value: -[
      -  {
      -    "anyOf": [
      -      {
      -        "type": "number"
      -      },
      -      {
      -        "type": "string"
      -      }
      -    ]
      -  },
      -  {
      -    "type": "null"
      -  }
      -]
    • removedOutput schema / properties / total_matching / description
      Removed value: -"Total rows matching the filter across the dataset (null when withheld by tier)"
  6. Changed1 schema field changed
    • changedOutput schema / (root)
      Previous value: -nullNew value: +{
      +  "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 (facility|market|iso_grid|queue_results|deal|report|response); branch on it.",
      +      "type": "string"
      +    },
      +    "_front_door": {
      +      "additionalProperties": {},
      +      "description": "First-tool hint: plan_query(intent) returns the ordered plan.",
      +      "properties": {},
      +      "type": "object"
      +    },
      +    "_return_loop": {
      +      "additionalProperties": {},
      +      "description": "Next-session delta call (get_changes).",
      +      "properties": {},
      +      "type": "object"
      +    },
      +    "citation": {
      +      "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."
      +    },
      +    "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": "Source, method, as_of, verification_counts, license, cite_as; quote it when citing.",
      +      "properties": {},
      +      "type": "object"
      +    },
      +    "quota": {
      +      "additionalProperties": {},
      +      "description": "Caller quota state (remaining calls, tier).",
      +      "properties": {},
      +      "type": "object"
      +    },
      +    "site_evaluation_handoff": {
      +      "anyOf": [
      +        {
      +          "items": {
      +            "additionalProperties": {},
      +            "properties": {},
      +            "type": "object"
      +          },
      +          "type": "array"
      +        },
      +        {
      +          "additionalProperties": {},
      +          "properties": {},
      +          "type": "object"
      +        }
      +      ],
      +      "description": "Follow-up calls [{tool, parameters, why}] when the payload carries coordinates."
      +    },
      +    "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"
      +}
  7. Changed2 schema fields changed
    • changedInput schema / properties / mpp_credential / description
      Previous value: -"Autonomous payment (Stripe MPP), step 2: the Shared Payment Token you minted for challenges[0]. Set it here to pay that challenge for this single call and receive the full result — no API key, no subscription, no human. One payment covers one call."New value: +"Stripe MPP step 2: the Shared Payment Token minted for challenges[0]; pays that challenge for this one call."
    • changedInput schema / properties / mpp_pay / description
      Previous value: -"Autonomous payment (Stripe MPP), step 1: set true to receive a signed per-call payment challenge (the challenge states the amount) for this call instead of the free preview. No money moves — a challenge is a price quote. Humans never set this, so it does not affect the normal free/trial funnel."New value: +"Stripe MPP step 1: true returns a signed per-call payment challenge (a quote; no money moves) instead of the free preview. Agents only."
  8. Changed1 schema field changed
    • changedOutput schema / (root)
      Previous value: -{
      -  "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": {
      -      "anyOf": [
      -        {
      -          "additionalProperties": {},
      -          "properties": {},
      -          "type": "object"
      -        },
      -        {
      -          "type": "string"
      -        }
      -      ],
      -      "description": "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."
      -    },
      -    "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"
      -}New value: +null
  9. Changed2 schema fields changed
    • changedInput schema / properties / mpp_credential / description
      Previous value: -"Autonomous payment (Stripe MPP), step 2: the Shared Payment Token you minted for challenges[0]. Set it here to pay $0.50 for this single call and receive the full result — no API key, no subscription, no human. One payment covers one call."New value: +"Autonomous payment (Stripe MPP), step 2: the Shared Payment Token you minted for challenges[0]. Set it here to pay that challenge for this single call and receive the full result — no API key, no subscription, no human. One payment covers one call."
    • changedInput schema / properties / mpp_pay / description
      Previous value: -"Autonomous payment (Stripe MPP), step 1: set true to receive a signed $0.50 payment challenge for this call instead of the free preview. No money moves — a challenge is a price quote. Humans never set this, so it does not affect the normal free/trial funnel."New value: +"Autonomous payment (Stripe MPP), step 1: set true to receive a signed per-call payment challenge (the challenge states the amount) for this call instead of the free preview. No money moves — a challenge is a price quote. Humans never set this, so it does not affect the normal free/trial funnel."
  10. Changed2 schema fields changed
    • addedInput schema / properties / mpp_credential
      Added value: +{
      +  "description": "Autonomous payment (Stripe MPP), step 2: the Shared Payment Token you minted for challenges[0]. Set it here to pay $0.50 for this single call and receive the full result — no API key, no subscription, no human. One payment covers one call.",
      +  "type": "string"
      +}
    • addedInput schema / properties / mpp_pay
      Added value: +{
      +  "description": "Autonomous payment (Stripe MPP), step 1: set true to receive a signed $0.50 payment challenge for this call instead of the free preview. No money moves — a challenge is a price quote. Humans never set this, so it does not affect the normal free/trial funnel.",
      +  "type": "boolean"
      +}
  11. 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#"
  12. Changed5 schema fields changed
    • 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"
  13. Changed1 schema field changed
    • addedOutput schema / properties / _front_door
      Added value: +{
      +  "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"
      +}
  14. Changed13 schema fields changed
    • 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: +"Facility search results: `data` rows (name, provider, location, capacity on fuller tiers) alongside the DC Hub envelope keys."
    • addedOutput schema / properties / count
      Added value: +{
      +  "anyOf": [
      +    {
      +      "anyOf": [
      +        {
      +          "type": "number"
      +        },
      +        {
      +          "type": "string"
      +        }
      +      ]
      +    },
      +    {
      +      "type": "null"
      +    }
      +  ],
      +  "description": "Rows returned in THIS response (null on some gated tiers)"
      +}
    • addedOutput schema / properties / data
      Added value: +{
      +  "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"
      +}
    • addedOutput schema / properties / full_results_available
      Added value: +{
      +  "anyOf": [
      +    {
      +      "type": "boolean"
      +    },
      +    {
      +      "type": "null"
      +    }
      +  ],
      +  "description": "false when the row set was trimmed for your tier"
      +}
    • addedOutput schema / properties / note
      Added value: +{
      +  "anyOf": [
      +    {
      +      "type": "string"
      +    },
      +    {
      +      "type": "null"
      +    }
      +  ],
      +  "description": "Serving note (e.g. how many rows the full tier returns)"
      +}
    • removedOutput schema / properties / site_evaluation_handoff / additionalProperties
      Removed value: -{}
    • addedOutput schema / properties / site_evaluation_handoff / anyOf
      Added value: +[
      +  {
      +    "items": {
      +      "additionalProperties": {},
      +      "properties": {},
      +      "type": "object"
      +    },
      +    "type": "array"
      +  },
      +  {
      +    "additionalProperties": {},
      +    "properties": {},
      +    "type": "object"
      +  }
      +]
    • changedOutput schema / properties / site_evaluation_handoff / description
      Previous value: -"Pre-built follow-up call (analyze_site / get_water_risk args) when the payload carries coordinates."New value: +"Pre-built follow-up calls (analyze_site / get_water_risk args) when the payload carries coordinates — an array of {tool, parameters, why} entries."
    • removedOutput schema / properties / site_evaluation_handoff / properties
      Removed value: -{}
    • removedOutput schema / properties / site_evaluation_handoff / type
      Removed value: -"object"
    • addedOutput schema / properties / success
      Added value: +{
      +  "anyOf": [
      +    {
      +      "type": "boolean"
      +    },
      +    {
      +      "type": "null"
      +    }
      +  ],
      +  "description": "true when the search executed"
      +}
    • addedOutput schema / properties / tier
      Added value: +{
      +  "anyOf": [
      +    {
      +      "type": "string"
      +    },
      +    {
      +      "type": "null"
      +    }
      +  ],
      +  "description": "Tier the response was served at"
      +}
    • addedOutput schema / properties / total_matching
      Added value: +{
      +  "anyOf": [
      +    {
      +      "anyOf": [
      +        {
      +          "type": "number"
      +        },
      +        {
      +          "type": "string"
      +        }
      +      ]
      +    },
      +    {
      +      "type": "null"
      +    }
      +  ],
      +  "description": "Total rows matching the filter across the dataset (null when withheld by tier)"
      +}
  15. Changed1 schema field changed
    • 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"
      +    },
      +    "_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": {
      +      "additionalProperties": {},
      +      "description": "Pre-built follow-up call (analyze_site / get_water_risk args) when the payload carries coordinates.",
      +      "properties": {},
      +      "type": "object"
      +    }
      +  },
      +  "type": "object"
      +}
  16. Changed16 schema fields changed
    • 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
  17. Changed29 schema fields changed
    • addedInput schema / $schema
      Added value: +"http://json-schema.org/draft-07/schema#"
    • removedInput schema / properties / city / default
      Removed value: -""
    • removedInput schema / properties / city / title
      Removed value: -"City"
    • removedInput schema / properties / country / default
      Removed value: -""
    • removedInput schema / properties / country / title
      Removed value: -"Country"
    • removedInput schema / properties / limit / default
      Removed value: -25
    • addedInput schema / properties / limit / maximum
      Added value: +9007199254740991
    • addedInput schema / properties / limit / minimum
      Added value: +-9007199254740991
    • removedInput schema / properties / limit / title
      Removed value: -"Limit"
    • removedInput schema / properties / max_capacity_mw / default
      Removed value: -0
    • removedInput schema / properties / max_capacity_mw / title
      Removed value: -"Max Capacity Mw"
    • removedInput schema / properties / min_capacity_mw / default
      Removed value: -0
    • removedInput schema / properties / min_capacity_mw / title
      Removed value: -"Min Capacity Mw"
    • removedInput schema / properties / offset / default
      Removed value: -0
    • addedInput schema / properties / offset / maximum
      Added value: +9007199254740991
    • addedInput schema / properties / offset / minimum
      Added value: +-9007199254740991
    • removedInput schema / properties / offset / title
      Removed value: -"Offset"
    • removedInput schema / properties / operator / default
      Removed value: -""
    • removedInput schema / properties / operator / title
      Removed value: -"Operator"
    • removedInput schema / properties / query / default
      Removed value: -""
    • removedInput schema / properties / query / title
      Removed value: -"Query"
    • removedInput schema / properties / state / default
      Removed value: -""
    • removedInput schema / properties / state / title
      Removed value: -"State"
    • removedInput schema / properties / tier / default
      Removed value: -0
    • addedInput schema / properties / tier / maximum
      Added value: +9007199254740991
    • addedInput schema / properties / tier / minimum
      Added value: +-9007199254740991
    • removedInput schema / properties / tier / title
      Removed value: -"Tier"
    • removedInput schema / title
      Removed value: -"search_facilitiesArguments"
    • changedOutput schema / (root)
      Previous value: -{
      -  "properties": {
      -    "result": {
      -      "title": "Result",
      -      "type": "string"
      -    }
      -  },
      -  "required": [
      -    "result"
      -  ],
      -  "title": "search_facilitiesOutput",
      -  "type": "object"
      -}New value: +null
  18. Changed1 schema field changed
    • changedOutput schema / (root)
      Previous value: -nullNew value: +{
      +  "properties": {
      +    "result": {
      +      "title": "Result",
      +      "type": "string"
      +    }
      +  },
      +  "required": [
      +    "result"
      +  ],
      +  "title": "search_facilitiesOutput",
      +  "type": "object"
      +}
  19. Changed1 schema field changed
    • changedOutput schema / (root)
      Previous value: -{
      -  "properties": {
      -    "result": {
      -      "title": "Result",
      -      "type": "string"
      -    }
      -  },
      -  "required": [
      -    "result"
      -  ],
      -  "title": "search_facilitiesOutput",
      -  "type": "object"
      -}New value: +null
  20. Changed1 schema field changed
    • changedOutput schema / (root)
      Previous value: -nullNew value: +{
      +  "properties": {
      +    "result": {
      +      "title": "Result",
      +      "type": "string"
      +    }
      +  },
      +  "required": [
      +    "result"
      +  ],
      +  "title": "search_facilitiesOutput",
      +  "type": "object"
      +}
  21. Changed1 schema field changed
    • changedOutput schema / (root)
      Previous value: -{
      -  "properties": {
      -    "result": {
      -      "title": "Result",
      -      "type": "string"
      -    }
      -  },
      -  "required": [
      -    "result"
      -  ],
      -  "title": "search_facilitiesOutput",
      -  "type": "object"
      -}New value: +null
  22. First observed

TDQS

A4.6/5.0
Behavior5/5

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

Annotations already declare readOnly/idempotent/non-destructive, but the description adds substantial behavior beyond them: free tier returns names and locations only while MW and specs require a paid key, each row is flagged verified or unverified_directory_listing, and an empty result is not an error. It also discloses limit ceiling and free-tier cap (25) and offset pagination, which matter for invocation.

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?

Front-loaded with the primary use case and packs payment, verification, no-match and pagination facts with little waste. It is a dense semicolon-chained sentence that reads as a run-on, slightly reducing scannability, but nearly every clause carries actionable information.

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?

With an output schema present, return fields (name, operator, location, market, status, MW, verified flag) need not be over-explained, yet the description still names them briefly. Combined with annotations, payment-tier behavior and no-match handling, an agent has everything needed to call this correctly.

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 description coverage is 100%, so the schema already documents all twelve parameters, making 3 the baseline. The description mostly restates the filter set (country, state, city, operator, MW range, tier, text) but adds the free-tier limit of 25 and an example illustrating combined filters, so it edges slightly above pure repetition.

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 opens with a specific situation ('which data centers exist, or who operates in a city, state or country'), naming the verb, resource and supported filter scope. It also differentiates from the sibling get_facility by saying to 'Start here for a facility slug', so the agent can route correctly without inspecting schemas.

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?

Explicit when-to-use is given, plus an example query ('Equinix sites in Virginia over 10 MW'), guidance on sequencing ('Start here for a facility slug'), and recovery behavior ('No match = empty data, not an error: broaden filters'). The free-vs-paid key condition also tells the agent what is usable in which plan.

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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