DC Hub

Interconnection Queue

get_interconnection_queue

Read-onlyIdempotent

Use this when the user asks about grid interconnection queues: how congested an ISO's queue is or how much data-center load is waiting. Returns queued generation GW per ISO. The projects field changes shape: with iso= it is an array of per-project rows; without iso it is an all-ISO summary object (total, by_iso_count, top). ERCOT also returns its large-load (data-center) queue; other ISOs don't publish one. Keyless: a trimmed preview; free with an email-bound key. Ex: "How deep is ERCOT's queue?" iso optional (US ISO code); free = preview. For demand and headroom on the same ISO also call get_grid_intelligence.

Input Schema

Name	Required	Description
`iso`	No	ISO/RTO grid region to drill into: ERCOT, PJM, MISO, CAISO, SPP, NYISO, ISONE; omit for the all-ISO snapshot
`mpp_pay`	No	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.
`mpp_credential`	No	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.

Output Schema

Name	Required	Description	Default
`v`	No
`iso`	No
`as_of`	No
`projects`	No
`queue_kind`	No
`source_url`	No
`source_name`	No
`project_count`	No
`top_subregions`	No
`queued_generation_gw`	No
`queued_large_load_gw`	No
`new_applications_q_gw`	No
`queued_connections_gw`	No
`new_applications_period`	No
`queued_load_dc_share_pct`	No
`historical_completion_pct`	No
`queued_load_data_center_gw`	No
`queued_generation_gw_basis_note`	No
`queued_generation_pending_revision_gw`	No
`queued_generation_pending_revision_gw_basis`	No

Schema Changelog

Changes observed during successful MCP inspections.

Changed2 schema fields changedOct 22, 2026

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"
+}

Changed2 schema fields changedOct 22, 2026

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"
-}

Changed2 schema fields changedOct 20, 2026

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."

Changed5 schema fields changedOct 20, 2026
- addedOutput schema / properties / queue_kind
```
Added value: +{}
```
- addedOutput schema / properties / queued_connections_gw
```
Added value: +{}
```
- addedOutput schema / properties / queued_large_load_gw
```
Added value: +{}
```
- removedOutput schema / properties / queued_load_total_gw
```
Removed value: -{}
```
- removedOutput schema / properties / queued_load_total_gw_basis
```
Removed value: -{}
```
Changed7 schema fields changedOct 19, 2026
- 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: -{}
```

Changed56 schema fields changedOct 18, 2026

changedOutput schema / additionalProperties
```
Previous value: -{}New value: +true
```

removedOutput schema / description

Removed value: -"ISO interconnection-queue snapshot: queued GW, per-project rows, and (ERCOT) the large-load data-center queue — 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 / as_of / anyOf

Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]

removedOutput schema / properties / as_of / description
```
Removed value: -"Queue snapshot date"
```

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 / historical_completion_pct / anyOf

Removed value: -[
-  {
-    "anyOf": [
-      {
-        "type": "number"
-      },
-      {
-        "type": "string"
-      }
-    ]
-  },
-  {
-    "type": "null"
-  }
-]

removedOutput schema / properties / historical_completion_pct / description

Removed value: -"Share of queued projects that historically complete, % (when published)"

removedOutput schema / properties / iso / anyOf

Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]

removedOutput schema / properties / iso / description

Removed value: -"ISO/RTO this snapshot covers (per-ISO drill-down form)"

removedOutput schema / properties / new_applications_period / anyOf

Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]

removedOutput schema / properties / new_applications_period / description
```
Removed value: -"Period the new-applications figure covers"
```

removedOutput schema / properties / new_applications_q_gw / anyOf

Removed value: -[
-  {
-    "anyOf": [
-      {
-        "type": "number"
-      },
-      {
-        "type": "string"
-      }
-    ]
-  },
-  {
-    "type": "null"
-  }
-]

removedOutput schema / properties / new_applications_q_gw / description

Removed value: -"New queue applications in the latest period, GW (when published)"

removedOutput schema / properties / project_count / anyOf

Removed value: -[
-  {
-    "anyOf": [
-      {
-        "type": "number"
-      },
-      {
-        "type": "string"
-      }
-    ]
-  },
-  {
-    "type": "null"
-  }
-]

removedOutput schema / properties / project_count / description
```
Removed value: -"Projects in the queue snapshot"
```

removedOutput schema / properties / projects / anyOf

Removed value: -[
-  {
-    "anyOf": [
-      {
-        "items": {
-          "additionalProperties": {},
-          "properties": {
-            "capacity_mw": {
-              "anyOf": [
-                {
-                  "anyOf": [
-                    {
-                      "type": "number"
-                    },
-                    {
-                      "type": "string"
-                    }
-                  ]
-                },
-                {
-                  "type": "null"
-                }
-              ],
-              "description": "Nameplate capacity, MW"
-            },
-            "county": {
-              "anyOf": [
-                {
-                  "type": "string"
-                },
-                {
-                  "type": "null"
-                }
-              ],
-              "description": "County"
-            },
-            "fuel_type": {
-              "anyOf": [
-                {
-                  "type": "string"
-                },
-                {
-                  "type": "null"
-                }
-              ],
-              "description": "Fuel / technology"
-            },
-            "iso": {
-              "anyOf": [
-                {
-                  "type": "string"
-                },
-                {
-                  "type": "null"
-                }
-              ],
-              "description": "ISO/RTO"
-            },
-            "project_name": {
-              "anyOf": [
-                {
-                  "type": "string"
-                },
-                {
-                  "type": "null"
-                }
-              ],
-              "description": "Project name"
-            },
-            "queue_date": {
-              "anyOf": [
-                {
-                  "type": "string"
-                },
-                {
-                  "type": "null"
-                }
-              ],
-              "description": "Queue entry date"
-            },
-            "queue_id": {
-              "anyOf": [
-                {
-                  "type": "string"
-                },
-                {
-                  "type": "null"
-                }
-              ],
-              "description": "ISO queue position id"
-            },
-            "queue_status": {
-              "anyOf": [
-                {
-                  "type": "string"
-                },
-                {
-                  "type": "null"
-                }
-              ],
-              "description": "Queue status"
-            },
-            "state": {
-              "anyOf": [
-                {
-                  "type": "string"
-                },
-                {
-                  "type": "null"
-                }
-              ],
-              "description": "US state"
-            }
-          },
-          "type": "object"
-        },
-        "type": "array"
-      },
-      {
-        "additionalProperties": {},
-        "properties": {
-          "by_iso_count": {
-            "description": "Per-ISO project counts, e.g. {\"PJM\":972,\"ERCOT\":1893,\"CAISO\":279}"
-          },
-          "note": {
-            "anyOf": [
-              {
-                "type": "string"
-              },
-              {
-                "type": "null"
-              }
-            ],
-            "description": "How the all-ISO rollup was assembled and where to get the full per-ISO list"
-          },
-          "top": {
-            "description": "The largest projects across all ISOs (same row shape as the per-ISO array form)"
-          },
-          "total": {
-            "anyOf": [
-              {
-                "anyOf": [
-                  {
-                    "type": "number"
-                  },
-                  {
-                    "type": "string"
-                  }
-                ]
-              },
-              {
-                "type": "null"
-              }
-            ],
-            "description": "Projects in the full multi-ISO queue, e.g. 5512"
-          },
-          "tracked": {
-            "anyOf": [
-              {
-                "type": "boolean"
-              },
-              {
-                "type": "null"
-              }
-            ],
-            "description": "Whether DC Hub has classified named per-project rows for this snapshot"
-          }
-        },
-        "type": "object"
-      }
-    ]
-  },
-  {
-    "type": "null"
-  }
-]

removedOutput schema / properties / projects / description

Removed value: -"SHAPE DEPENDS ON THE CALL: with iso= this is an ARRAY of queued generation projects (largest / most recent first); with iso omitted it is the all-ISO SUMMARY OBJECT {total, tracked, by_iso_count, top, note} — per-project rows are not returned for the all-ISO snapshot. Check the type before indexing."

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 / queued_generation_gw / anyOf

Removed value: -[
-  {
-    "anyOf": [
-      {
-        "type": "number"
-      },
-      {
-        "type": "string"
-      }
-    ]
-  },
-  {
-    "type": "null"
-  }
-]

removedOutput schema / properties / queued_generation_gw / description

Removed value: -"Generation interconnection queue in this ISO, GW (US ISOs; ERCOT's generation queue, not its large-load queue). null on NESO/IESO/AESO"

removedOutput schema / properties / queued_generation_gw_basis_note / anyOf

Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]

removedOutput schema / properties / queued_generation_gw_basis_note / description

Removed value: -"What queued_generation_gw counts on this row: status filter and MW column, e.g. \"Active only, summer MW\". Present on the US generation-queue ISOs other than ERCOT; compare totals from other trackers only on the same basis"

removedOutput schema / properties / queued_generation_pending_revision_gw / anyOf

Removed value: -[
-  {
-    "anyOf": [
-      {
-        "type": "number"
-      },
-      {
-        "type": "string"
-      }
-    ]
-  },
-  {
-    "type": "null"
-  }
-]

removedOutput schema / properties / queued_generation_pending_revision_gw / description

Removed value: -"MISO only: GW of applications in Pending Revision Approval (summer MW), reported beside the active total and NOT part of queued_generation_gw. null on every other ISO, and null on the free preview like the other GW figures"

removedOutput schema / properties / queued_generation_pending_revision_gw_basis / anyOf
```
Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]
```

removedOutput schema / properties / queued_generation_pending_revision_gw_basis / description

Removed value: -"What queued_generation_pending_revision_gw counts: the MISO status, MW column, and that it is excluded from queued_generation_gw. Present only when the figure is"

removedOutput schema / properties / queued_load_data_center_gw / anyOf

Removed value: -[
-  {
-    "anyOf": [
-      {
-        "type": "number"
-      },
-      {
-        "type": "string"
-      }
-    ]
-  },
-  {
-    "type": "null"
-  }
-]

removedOutput schema / properties / queued_load_data_center_gw / description

Removed value: -"ERCOT: data-center load DERIVED as ~90% of the large-load queue, GW. NESO/IESO/AESO: demand projects in the connections queue (all demand, not data centres only). null elsewhere"

removedOutput schema / properties / queued_load_dc_share_pct / anyOf

Removed value: -[
-  {
-    "anyOf": [
-      {
-        "type": "number"
-      },
-      {
-        "type": "string"
-      }
-    ]
-  },
-  {
-    "type": "null"
-  }
-]

removedOutput schema / properties / queued_load_dc_share_pct / description

Removed value: -"ERCOT: data-center share of the large-load queue, %. NESO/IESO/AESO: demand share of the connections queue, %. null elsewhere"

removedOutput schema / properties / queued_load_total_gw / anyOf

Removed value: -[
-  {
-    "anyOf": [
-      {
-        "type": "number"
-      },
-      {
-        "type": "string"
-      }
-    ]
-  },
-  {
-    "type": "null"
-  }
-]

removedOutput schema / properties / queued_load_total_gw / description

Removed value: -"Meaning depends on queued_load_total_gw_basis: generation_queue = the generation queue (deprecated alias of queued_generation_gw, removed after 2026-11-15); large_load = ERCOT's large-load (demand) queue; mixed_connection_queue = NESO/IESO/AESO connections queue (generation AND demand). GW"

removedOutput schema / properties / queued_load_total_gw_basis / anyOf

Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]

removedOutput schema / properties / queued_load_total_gw_basis / description

Removed value: -"What queued_load_total_gw measures on this row: generation_queue | large_load | mixed_connection_queue"

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 / source_name / anyOf

Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]

removedOutput schema / properties / source_name / description
```
Removed value: -"Queue source name"
```

removedOutput schema / properties / source_url / anyOf

Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]

removedOutput schema / properties / source_url / description
```
Removed value: -"Queue source URL"
```

removedOutput schema / properties / top_subregions / description

Removed value: -"Provenance / sub-region breakdown for the large-load figure (ERCOT)"

removedOutput schema / properties / v / anyOf

Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]

removedOutput schema / properties / v / description

Removed value: -"Verification flag for the snapshot"

AddedOct 9, 2026
RemovedSep 29, 2026

Changed2 schema fields changedSep 29, 2026

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."

Changed2 schema fields changedSep 8, 2026

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"
+}

Changed2 schema fields changedAug 29, 2026

changedOutput schema / properties / projects / anyOf

Previous value: -[
-  {
-    "items": {
-      "additionalProperties": {},
-      "properties": {
-        "capacity_mw": {
-          "anyOf": [
-            {
-              "anyOf": [
-                {
-                  "type": "number"
-                },
-                {
-                  "type": "string"
-                }
-              ]
-            },
-            {
-              "type": "null"
-            }
-          ],
-          "description": "Nameplate capacity, MW"
-        },
-        "county": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ],
-          "description": "County"
-        },
-        "fuel_type": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ],
-          "description": "Fuel / technology"
-        },
-        "iso": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ],
-          "description": "ISO/RTO"
-        },
-        "project_name": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ],
-          "description": "Project name"
-        },
-        "queue_date": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ],
-          "description": "Queue entry date"
-        },
-        "queue_id": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ],
-          "description": "ISO queue position id"
-        },
-        "queue_status": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ],
-          "description": "Queue status"
-        },
-        "state": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ],
-          "description": "US state"
-        }
-      },
-      "type": "object"
-    },
-    "type": "array"
-  },
-  {
-    "type": "null"
-  }
-]New value: +[
+  {
+    "anyOf": [
+      {
+        "items": {
+          "additionalProperties": {},
+          "properties": {
+            "capacity_mw": {
+              "anyOf": [
+                {
+                  "anyOf": [
+                    {
+                      "type": "number"
+                    },
+                    {
+                      "type": "string"
+                    }
+                  ]
+                },
+                {
+                  "type": "null"
+                }
+              ],
+              "description": "Nameplate capacity, MW"
+            },
+            "county": {
+              "anyOf": [
+                {
+                  "type": "string"
+                },
+                {
+                  "type": "null"
+                }
+              ],
+              "description": "County"
+            },
+            "fuel_type": {
+              "anyOf": [
+                {
+                  "type": "string"
+                },
+                {
+                  "type": "null"
+                }
+              ],
+              "description": "Fuel / technology"
+            },
+            "iso": {
+              "anyOf": [
+                {
+                  "type": "string"
+                },
+                {
+                  "type": "null"
+                }
+              ],
+              "description": "ISO/RTO"
+            },
+            "project_name": {
+              "anyOf": [
+                {
+                  "type": "string"
+                },
+                {
+                  "type": "null"
+                }
+              ],
+              "description": "Project name"
+            },
+            "queue_date": {
+              "anyOf": [
+                {
+                  "type": "string"
+                },
+                {
+                  "type": "null"
+                }
+              ],
+              "description": "Queue entry date"
+            },
+            "queue_id": {
+              "anyOf": [
+                {
+                  "type": "string"
+                },
+                {
+                  "type": "null"
+                }
+              ],
+              "description": "ISO queue position id"
+            },
+            "queue_status": {
+              "anyOf": [
+                {
+                  "type": "string"
+                },
+                {
+                  "type": "null"
+                }
+              ],
+              "description": "Queue status"
+            },
+            "state": {
+              "anyOf": [
+                {
+                  "type": "string"
+                },
+                {
+                  "type": "null"
+                }
+              ],
+              "description": "US state"
+            }
+          },
+          "type": "object"
+        },
+        "type": "array"
+      },
+      {
+        "additionalProperties": {},
+        "properties": {
+          "by_iso_count": {
+            "description": "Per-ISO project counts, e.g. {\"PJM\":972,\"ERCOT\":1893,\"CAISO\":279}"
+          },
+          "note": {
+            "anyOf": [
+              {
+                "type": "string"
+              },
+              {
+                "type": "null"
+              }
+            ],
+            "description": "How the all-ISO rollup was assembled and where to get the full per-ISO list"
+          },
+          "top": {
+            "description": "The largest projects across all ISOs (same row shape as the per-ISO array form)"
+          },
+          "total": {
+            "anyOf": [
+              {
+                "anyOf": [
+                  {
+                    "type": "number"
+                  },
+                  {
+                    "type": "string"
+                  }
+                ]
+              },
+              {
+                "type": "null"
+              }
+            ],
+            "description": "Projects in the full multi-ISO queue, e.g. 5512"
+          },
+          "tracked": {
+            "anyOf": [
+              {
+                "type": "boolean"
+              },
+              {
+                "type": "null"
+              }
+            ],
+            "description": "Whether DC Hub has classified named per-project rows for this snapshot"
+          }
+        },
+        "type": "object"
+      }
+    ]
+  },
+  {
+    "type": "null"
+  }
+]

changedOutput schema / properties / projects / description

Previous value: -"Queued generation projects (largest / most recent first)"New value: +"SHAPE DEPENDS ON THE CALL: with iso= this is an ARRAY of queued generation projects (largest / most recent first); with iso omitted it is the all-ISO SUMMARY OBJECT {total, tracked, by_iso_count, top, note} — per-project rows are not returned for the all-ISO snapshot. Check the type before indexing."

Changed2 schema fields changedAug 21, 2026

removedInput schema / $schema

Removed value: -"http://json-schema.org/draft-07/schema#"

removedOutput schema / $schema

Removed value: -"http://json-schema.org/draft-07/schema#"

Changed5 schema fields changedAug 11, 2026

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"
```

Changed1 schema field changedJul 21, 2026

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"
+}

Changed20 schema fields changedJul 18, 2026

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: +"ISO interconnection-queue snapshot: queued GW, per-project rows, and (ERCOT) the large-load data-center queue — alongside the DC Hub envelope keys."

addedOutput schema / properties / as_of

Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "description": "Queue snapshot date"
+}

addedOutput schema / properties / historical_completion_pct

Added value: +{
+  "anyOf": [
+    {
+      "anyOf": [
+        {
+          "type": "number"
+        },
+        {
+          "type": "string"
+        }
+      ]
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "description": "Share of queued projects that historically complete, % (when published)"
+}

addedOutput schema / properties / iso

Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "description": "ISO/RTO this snapshot covers (per-ISO drill-down form)"
+}

addedOutput schema / properties / new_applications_period

Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "description": "Period the new-applications figure covers"
+}

addedOutput schema / properties / new_applications_q_gw

Added value: +{
+  "anyOf": [
+    {
+      "anyOf": [
+        {
+          "type": "number"
+        },
+        {
+          "type": "string"
+        }
+      ]
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "description": "New queue applications in the latest period, GW (when published)"
+}

addedOutput schema / properties / project_count

Added value: +{
+  "anyOf": [
+    {
+      "anyOf": [
+        {
+          "type": "number"
+        },
+        {
+          "type": "string"
+        }
+      ]
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "description": "Projects in the queue snapshot"
+}

addedOutput schema / properties / projects

Added value: +{
+  "anyOf": [
+    {
+      "items": {
+        "additionalProperties": {},
+        "properties": {
+          "capacity_mw": {
+            "anyOf": [
+              {
+                "anyOf": [
+                  {
+                    "type": "number"
+                  },
+                  {
+                    "type": "string"
+                  }
+                ]
+              },
+              {
+                "type": "null"
+              }
+            ],
+            "description": "Nameplate capacity, MW"
+          },
+          "county": {
+            "anyOf": [
+              {
+                "type": "string"
+              },
+              {
+                "type": "null"
+              }
+            ],
+            "description": "County"
+          },
+          "fuel_type": {
+            "anyOf": [
+              {
+                "type": "string"
+              },
+              {
+                "type": "null"
+              }
+            ],
+            "description": "Fuel / technology"
+          },
+          "iso": {
+            "anyOf": [
+              {
+                "type": "string"
+              },
+              {
+                "type": "null"
+              }
+            ],
+            "description": "ISO/RTO"
+          },
+          "project_name": {
+            "anyOf": [
+              {
+                "type": "string"
+              },
+              {
+                "type": "null"
+              }
+            ],
+            "description": "Project name"
+          },
+          "queue_date": {
+            "anyOf": [
+              {
+                "type": "string"
+              },
+              {
+                "type": "null"
+              }
+            ],
+            "description": "Queue entry date"
+          },
+          "queue_id": {
+            "anyOf": [
+              {
+                "type": "string"
+              },
+              {
+                "type": "null"
+              }
+            ],
+            "description": "ISO queue position id"
+          },
+          "queue_status": {
+            "anyOf": [
+              {
+                "type": "string"
+              },
+              {
+                "type": "null"
+              }
+            ],
+            "description": "Queue status"
+          },
+          "state": {
+            "anyOf": [
+              {
+                "type": "string"
+              },
+              {
+                "type": "null"
+              }
+            ],
+            "description": "US state"
+          }
+        },
+        "type": "object"
+      },
+      "type": "array"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "description": "Queued generation projects (largest / most recent first)"
+}

addedOutput schema / properties / queued_load_data_center_gw

Added value: +{
+  "anyOf": [
+    {
+      "anyOf": [
+        {
+          "type": "number"
+        },
+        {
+          "type": "string"
+        }
+      ]
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "description": "ERCOT only: large-load (data-center-driven) queue, GW — null for ISOs that publish no comparable feed"
+}

addedOutput schema / properties / queued_load_dc_share_pct

Added value: +{
+  "anyOf": [
+    {
+      "anyOf": [
+        {
+          "type": "number"
+        },
+        {
+          "type": "string"
+        }
+      ]
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "description": "ERCOT only: data-center share of queued load, %"
+}

addedOutput schema / properties / queued_load_total_gw

Added value: +{
+  "anyOf": [
+    {
+      "anyOf": [
+        {
+          "type": "number"
+        },
+        {
+          "type": "string"
+        }
+      ]
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "description": "Total queued GENERATION capacity in this ISO, GW"
+}

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 / source_name

Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "description": "Queue source name"
+}

addedOutput schema / properties / source_url

Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "description": "Queue source URL"
+}

addedOutput schema / properties / top_subregions

Added value: +{
+  "description": "Provenance / sub-region breakdown for the large-load figure (ERCOT)"
+}

addedOutput schema / properties / v

Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "description": "Verification flag for the snapshot"
+}

Changed1 schema field changedJul 17, 2026

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"
+}

Changed1 schema field changedJul 2, 2026

addedInput schema / properties / iso / description

Added value: +"ISO/RTO grid region to drill into: ERCOT, PJM, MISO, CAISO, SPP, NYISO, ISONE; omit for the all-ISO snapshot"

AddedMay 25, 2026

TDQS

A4.6/5.0

Behavior5/5

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

Annotations only cover the safety profile (readOnly, idempotent, non-destructive, open-world), but the description discloses non-obvious behavior: the 'projects' field is polymorphic (array of rows when iso is given, summary object when omitted), ERCOT uniquely exposes a large-load queue, and the keyless call returns a trimmed preview vs a keyed/free full response. These are exactly the traits an agent cannot infer from structured fields.

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 trigger and return value, then layers in shape variance, ERCOT special case, and access tiers. Slight redundancy: 'Keyless: a trimmed preview; free with an email-bound key' is partly restated by 'free = preview' and by the payment param descriptions.

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?

Despite an output schema existing, the description supplies the polymorphic response shape, the ERCOT-only queue nuance, and the free-vs-paid access path — the information an agent needs to call and interpret the tool correctly. Nothing material is missing for a zero-required-parameter read tool.

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%, so the baseline is 3, but the description adds meaning the schema does not: iso's presence changes the response shape, and omitting it yields an all-ISO snapshot. Payment params are also framed as requiring explicit human approval. It restates 'iso optional' rather than adding new syntax.

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?

States a specific verb+resource (grid interconnection queues) and names the exact payload ('queued generation GW per ISO'), which separates it from adjacent data tools like get_grid_intelligence, get_refined_queue and get_power_pipeline. It also names the user question it answers (queue congestion, data-center load waiting).

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

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Gives a concrete triggering condition ('when the user asks about... how congested an ISO's queue is or how much data-center load is waiting') and routes to a complementary sibling ('for demand and headroom on the same ISO also call get_grid_intelligence'). It does not state when NOT to use it or when to prefer get_refined_queue/get_power_pipeline instead.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

All DC Hub tools Inspect

Try in Browser

One endpoint for every MCP toolRayrun runs every MCP server behind one URL and holds the credentials. Each call is decided per client, tool, and argument, then recorded.ray.runAd

Glama MCP Gateway

Add one secure layer between your agents and this server.