DC Hub — Data Center Site Selection & Colocation: Electricity, Power Grid, Gas, Fiber

Energy Prices

get_energy_prices

Read-onlyIdempotent

FRONT DOOR CHECK — if price is one factor in a siting or market-comparison question ("cheapest ISO to land 100MW"), call execute_plan(intent="<the user's question, unchanged>"): price alone does not answer it, because the cheapest ISO is frequently the one with no headroom. If the user just wants today's price for one ISO, get_energy_prices IS the right call — one round trip, no planner overhead. Use when a user asks "what does power/gas COST in right now?" — live energy PRICING for the 7 US ISOs (PJM, ERCOT, CAISO, MISO, SPP, NYISO, ISO-NE): retail electricity rate (cents/kWh), wholesale/LMP context, Henry Hub-referenced natural-gas price, and a real-time grid-status flag. Example: "What is the retail power price and gas price in ERCOT today?" — get_energy_prices iso=ERCOT. Params: iso (one of the 7 US ISOs; required). Returns: {iso, retail_price_cents_kwh, wholesale_price_usd_mwh, natural_gas_usd_mmbtu, grid_status, as_of}. Quote with attribution to DC Hub (CC-BY-4.0). Do NOT use for fuel mix / demand / 24h curve (use get_grid_data), for power HEADROOM or time-to-power (use get_grid_intelligence), or for behind-the-meter gas-to-grid $/MWh economics (use get_gas_economics); this is the live retail+gas PRICE read for one ISO.

Input Schema

TableJSON Schema

Name	Required	Description
`iso`	No	ISO/RTO grid region (required for ISO pricing): ERCOT, PJM, MISO, CAISO, SPP, NYISO, ISONE
`state`	No	US state abbreviation for state-level pricing context, e.g. TX
`mpp_pay`	No	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.
`data_type`	No	Optional price type focus, e.g. retail, wholesale, gas
`mpp_credential`	No	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.

Output Schema

TableJSON Schema

Name	Required	Description
`as_of`	No	Pricing as-of timestamp
`gated`	No	true when parts of the payload were withheld by tier
`quota`	No	Caller quota state (remaining calls, tier) when available.
`scope`	No	What the figures cover (e.g. the ISO/state scope line)
`filter`	No	Echo of the applied filters
`_entity`	No	Payload class discriminator (e.g. facility\|market\|iso_grid\|queue_results\|deal\|report\|response) — branch on this before parsing the rest.
`success`	No	true when the pricing lookup succeeded
`citation`	No	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.
`provenance`	No	Collection-level provenance block: {source, method, as_of, verification_counts, cite_url_template, license, cite_as}. Quote the verification level when citing.
`_front_door`	No	In-band front-door hint (first workflow-entry tool of a session): call plan_query(intent) first for the ordered multi-step plan.
`caller_tier`	No	Tier the response was served at
`grid_status`	No	Real-time grid status flag (when served)
`_return_loop`	No	Suggested next-session delta call (get_changes since=24h) so you pull only what changed.
`avg_rate_kwh`	No	Average rate, cents/kWh
`retail_rates`	No	Retail-rate aggregate block
`retail_rate_kwh`	No	Retail electricity rate, cents/kWh
`industrial_rate_kwh`	No	Industrial electricity rate, cents/kWh
`natural_gas_usd_mmbtu`	No	Henry Hub-referenced natural gas price, USD/MMBtu (when served)
`site_evaluation_handoff`	No	Pre-built follow-up calls (analyze_site / get_water_risk args) when the payload carries coordinates — an array of {tool, parameters, why} entries.
`wholesale_price_usd_mwh`	No	Wholesale / LMP context, USD/MWh (when served)

Schema Changelog

Changes observed during successful MCP inspections.

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 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"
+}

Changed19 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: +"Live energy pricing for one US ISO: retail cents/kWh + wholesale + natural gas context — alongside the DC Hub envelope keys."

addedOutput schema / properties / as_of

Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "description": "Pricing as-of timestamp"
+}

addedOutput schema / properties / avg_rate_kwh

Added value: +{
+  "anyOf": [
+    {
+      "anyOf": [
+        {
+          "type": "number"
+        },
+        {
+          "type": "string"
+        }
+      ]
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "description": "Average rate, cents/kWh"
+}

addedOutput schema / properties / caller_tier

Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "description": "Tier the response was served at"
+}

addedOutput schema / properties / filter

Added value: +{
+  "anyOf": [
+    {
+      "additionalProperties": {},
+      "properties": {
+        "iso": {
+          "anyOf": [
+            {
+              "type": "string"
+            },
+            {
+              "type": "null"
+            }
+          ],
+          "description": "ISO filter echoed back"
+        },
+        "sector": {
+          "anyOf": [
+            {
+              "type": "string"
+            },
+            {
+              "type": "null"
+            }
+          ],
+          "description": "Sector the rate covers"
+        },
+        "state": {
+          "anyOf": [
+            {
+              "type": "string"
+            },
+            {
+              "type": "null"
+            }
+          ],
+          "description": "State filter echoed back"
+        }
+      },
+      "type": "object"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "description": "Echo of the applied filters"
+}

addedOutput schema / properties / gated

Added value: +{
+  "anyOf": [
+    {
+      "type": "boolean"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "description": "true when parts of the payload were withheld by tier"
+}

addedOutput schema / properties / grid_status

Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "description": "Real-time grid status flag (when served)"
+}

addedOutput schema / properties / industrial_rate_kwh

Added value: +{
+  "anyOf": [
+    {
+      "anyOf": [
+        {
+          "type": "number"
+        },
+        {
+          "type": "string"
+        }
+      ]
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "description": "Industrial electricity rate, cents/kWh"
+}

addedOutput schema / properties / natural_gas_usd_mmbtu

Added value: +{
+  "anyOf": [
+    {
+      "anyOf": [
+        {
+          "type": "number"
+        },
+        {
+          "type": "string"
+        }
+      ]
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "description": "Henry Hub-referenced natural gas price, USD/MMBtu (when served)"
+}

addedOutput schema / properties / retail_rate_kwh

Added value: +{
+  "anyOf": [
+    {
+      "anyOf": [
+        {
+          "type": "number"
+        },
+        {
+          "type": "string"
+        }
+      ]
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "description": "Retail electricity rate, cents/kWh"
+}

addedOutput schema / properties / retail_rates

Added value: +{
+  "anyOf": [
+    {
+      "additionalProperties": {},
+      "properties": {
+        "avg_cents_kwh": {
+          "anyOf": [
+            {
+              "anyOf": [
+                {
+                  "type": "number"
+                },
+                {
+                  "type": "string"
+                }
+              ]
+            },
+            {
+              "type": "null"
+            }
+          ],
+          "description": "Average retail, cents/kWh"
+        },
+        "latest_period": {
+          "anyOf": [
+            {
+              "type": "string"
+            },
+            {
+              "type": "null"
+            }
+          ],
+          "description": "EIA period the rates come from"
+        },
+        "max_cents_kwh": {
+          "anyOf": [
+            {
+              "anyOf": [
+                {
+                  "type": "number"
+                },
+                {
+                  "type": "string"
+                }
+              ]
+            },
+            {
+              "type": "null"
+            }
+          ],
+          "description": "Maximum, cents/kWh"
+        },
+        "min_cents_kwh": {
+          "anyOf": [
+            {
+              "anyOf": [
+                {
+                  "type": "number"
+                },
+                {
+                  "type": "string"
+                }
+              ]
+            },
+            {
+              "type": "null"
+            }
+          ],
+          "description": "Minimum, cents/kWh"
+        },
+        "states_covered": {
+          "anyOf": [
+            {
+              "anyOf": [
+                {
+                  "type": "number"
+                },
+                {
+                  "type": "string"
+                }
+              ]
+            },
+            {
+              "type": "null"
+            }
+          ],
+          "description": "States in the aggregate"
+        }
+      },
+      "type": "object"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "description": "Retail-rate aggregate block"
+}

addedOutput schema / properties / scope

Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "description": "What the figures cover (e.g. the ISO/state scope line)"
+}

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 pricing lookup succeeded"
+}

addedOutput schema / properties / wholesale_price_usd_mwh

Added value: +{
+  "anyOf": [
+    {
+      "anyOf": [
+        {
+          "type": "number"
+        },
+        {
+          "type": "string"
+        }
+      ]
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "description": "Wholesale / LMP context, USD/MWh (when served)"
+}

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"
+}

Changed3 schema fields changedJul 2, 2026

addedInput schema / properties / data_type / description

Added value: +"Optional price type focus, e.g. retail, wholesale, gas"

addedInput schema / properties / iso / description

Added value: +"ISO/RTO grid region (required for ISO pricing): ERCOT, PJM, MISO, CAISO, SPP, NYISO, ISONE"

addedInput schema / properties / state / description

Added value: +"US state abbreviation for state-level pricing context, e.g. TX"

Changed9 schema fields changedApr 29, 2026

addedInput schema / $schema

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

removedInput schema / properties / data_type / default
```
Removed value: -"retail_rates"
```
removedInput schema / properties / data_type / title
```
Removed value: -"Data Type"
```
removedInput schema / properties / iso / default
```
Removed value: -""
```
removedInput schema / properties / iso / title
```
Removed value: -"Iso"
```
removedInput schema / properties / state / default
```
Removed value: -""
```
removedInput schema / properties / state / title
```
Removed value: -"State"
```

removedInput schema / title

Removed value: -"get_energy_pricesArguments"

changedOutput schema / (root)

Previous value: -{
-  "properties": {
-    "result": {
-      "title": "Result",
-      "type": "string"
-    }
-  },
-  "required": [
-    "result"
-  ],
-  "title": "get_energy_pricesOutput",
-  "type": "object"
-}New value: +null

Changed1 schema field changedApr 18, 2026

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "properties": {
+    "result": {
+      "title": "Result",
+      "type": "string"
+    }
+  },
+  "required": [
+    "result"
+  ],
+  "title": "get_energy_pricesOutput",
+  "type": "object"
+}

Changed1 schema field changedApr 11, 2026

changedOutput schema / (root)

Previous value: -{
-  "properties": {
-    "result": {
-      "title": "Result",
-      "type": "string"
-    }
-  },
-  "required": [
-    "result"
-  ],
-  "title": "get_energy_pricesOutput",
-  "type": "object"
-}New value: +null

Changed1 schema field changedMar 31, 2026

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "properties": {
+    "result": {
+      "title": "Result",
+      "type": "string"
+    }
+  },
+  "required": [
+    "result"
+  ],
+  "title": "get_energy_pricesOutput",
+  "type": "object"
+}

Changed1 schema field changedMar 26, 2026

changedOutput schema / (root)

Previous value: -{
-  "properties": {
-    "result": {
-      "title": "Result",
-      "type": "string"
-    }
-  },
-  "required": [
-    "result"
-  ],
-  "title": "get_energy_pricesOutput",
-  "type": "object"
-}New value: +null

AddedMar 15, 2026

TDQS

A4.6/5.0

Behavior4/5

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

Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false, so the safety profile is known. The description adds valuable behavior: returns a specific object shape, requires attribution to DC Hub (CC-BY-4.0), and clarifies the quote behavior. It doesn't describe rate limits or latency, but for a read-only, idempotent tool with an output schema, it covers the key behavioral expectations beyond annotations.

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

Conciseness4/5

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

The description is dense and front-loaded with the most critical routing decision ('FRONT DOOR CHECK'). Every clause earns its place—the example, the param pointer, the return fields, the attribution requirement. It is longer than ideal, but it earns its length with high information density. Slight redundancy with the schema (enumerating ISOs, params) is acceptable because it reinforces routing.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a multi-purpose tool with 5 params (some payment-related) and a broad sibling set, this description is exceptionally complete. It covers when to use, when not to use, what data is returned, an example invocation, required parameter handling (iso), attribution, and the payment flow for autonomous agents. The output schema exists, so return values need no further documentation. Nothing an agent needs to decide between this and a sibling is missing.

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

Parameters4/5

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

Schema description coverage is 100%, so the schema fully documents parameter meanings. The description adds critical selection semantics: it shows via example that "What is the retail power price and gas price in ERCOT today?" maps to iso=ERCOT, and it emphasizes that iso is the required argument for the primary use case. The description also clarifies the mpp_* parameters contextually as part of the autonomous payment flow, though the schema already covers them well. The baseline of 3 is exceeded because the description gives the 'iso required' usage pattern that is not obvious from the schema (which shows 0 required params).

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description states a specific verb and resource: get today's energy pricing for 7 US ISOs, listing exact data fields (retail rate, wholesale/LMP, gas, grid flag). It clearly distinguishes from siblings by explicitly naming what it is NOT for (fuel mix, headroom, gas-to-grid economics) and routes to alternative tools. This is a model of sibling differentiation.

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?

Explicitly says when to use this tool (simple single-ISO price question) and when NOT to use it (when price is one factor in siting/market comparison, or for fuel mix, headroom, gas economics). It names the alternative tools (execute_plan, get_grid_data, get_grid_intelligence, get_gas_economics) with clear conditions. The 'FRONT DOOR CHECK' framing gives an agent a decision tree.

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

All DC Hub — Data Center Site Selection & Colocation: Electricity, Power Grid, Gas, Fiber tools Inspect

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Energy Prices

Input Schema

Output Schema

Schema Changelog

TDQS

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