DC Hub

Execute Plan

execute_plan

Read-onlyIdempotent

Use this when a data center question spans several topics: one-call planner over megawatts and power density, grid headroom and power availability, interconnection queues, substations and transmission, site selection and buildable capacity, colocation and wholesale data-center markets, AI/GPU compute campuses, fiber routes, diversity and latency, PPAs and energy pricing, tax incentives and permitting, water and climate risk, data-center M&A and deals, power generation, gas and energy infrastructure. Recommended entry for a question that spans more than one of those: it picks and chains the right tools and returns one dated, cited answer. Pass the user's question as intent. One call plans AND answers: deterministic no-LLM routing (the same planner plan_query exposes), then it runs the recommended sequence wave-by-wave (parallel where the graph allows), resolves hand-offs between steps (metro_slug / candidate_id / ISO minting), fans out per-finalist reads (capped), and returns every step's result in ONE envelope: _entity=plan_execution {intent_class, executed:[{step, tool, args, status, ms, result}], minted, totals, replay (decisions with executed/failed status), answer_guide}.

Input Schema

Name	Required	Description
`iso`	No	ISO/RTO code to pin geography, e.g. "PJM", "ERCOT".
`lat`	No	Latitude for a specific site.
`lon`	No	Longitude for a specific site.
`state`	No	US state code, e.g. "VA".
`cohort`	No	Optional experiment tag for adoption/retention measurement, e.g. "cohort.front_door". Has NO effect on routing, planning, geography or results — it is recorded only.
`intent`	Yes	The user's infrastructure question, passed through UNCHANGED. Examples: "rank markets for a 200 MW AI campus" · "evaluate 100 MW power headroom for a GPU training cluster in PJM" · "compare Dallas vs Phoenix for a hyperscale campus" ·…
`market`	No	Metro slug or name to pin the analysis to, e.g. "ashburn". Beats any market the planner would mint.
`context`	No	Optional structured hints AND step-arg overrides: {lat, lon, iso, market, capacity_mw, candidate_id, state, since} — user-supplied values beat minted ones. The typed top-level params below are merged into this and WIN on conflict.
`max_steps`	No	Max plan steps to execute, 1-8 (default 6)
`max_fanout`	No	Max per-finalist fan-out calls for one step, 1-3 (default 2)
`capacity_mw`	No	Target capacity in MW, e.g. 100.

Output Schema

Name	Required	Description	Default
No arguments

Schema Changelog

Changes observed during successful MCP inspections.

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: -{}
```

Changed21 schema fields changedOct 18, 2026

changedInput schema / properties / cohort / description

Previous value: -"Optional experiment tag for adoption/retention measurement, e.g. \"cohort.front_door\". Has NO effect on routing, planning, geography or results — it is recorded only. Put your user's question in `intent` and the tag HERE; never inside the intent string, which would break classification. Max 64 chars, [a-z0-9._-]; a malformed tag is ignored, never an error."New value: +"Optional experiment tag for adoption/retention measurement, e.g. \"cohort.front_door\". Has NO effect on routing, planning, geography or results — it is recorded only."

changedInput schema / properties / intent / description

Previous value: -"The user's infrastructure question, passed through UNCHANGED. Examples: \"rank markets for a 200 MW AI campus\" · \"evaluate 100 MW power headroom for a GPU training cluster in PJM\" · \"compare Dallas vs Phoenix for a hyperscale campus\" · \"find 100 MW of buildable capacity near Ashburn\" · \"where do fiber density and grid headroom overlap in Atlanta\""New value: +"The user's infrastructure question, passed through UNCHANGED. Examples: \"rank markets for a 200 MW AI campus\" · \"evaluate 100 MW power headroom for a GPU training cluster in PJM\" · \"compare Dallas vs Phoenix for a hyperscale campus\" ·…"

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

removedOutput schema / description

Removed value: -"DC Hub envelope: tool data fields ride at the top level beside these keys."

removedOutput schema / properties / _entity / 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 / 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."

Changed1 schema field changedOct 9, 2026

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "additionalProperties": {},
+  "description": "DC Hub envelope: tool data fields ride at the top level beside these 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."
+    },
+    "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."
+    }
+  },
+  "type": "object"
+}

Changed1 schema field changedSep 29, 2026

changedOutput schema / (root)

Previous value: -{
-  "additionalProperties": {},
-  "description": "DC Hub envelope: structuredContent mirrors the JSON payload in content[0].text — tool-specific data fields ride at the top level alongside these envelope keys.",
-  "properties": {
-    "_entity": {
-      "description": "Payload class discriminator (e.g. facility|market|iso_grid|queue_results|deal|report|response) — branch on this before parsing the rest.",
-      "type": "string"
-    },
-    "_front_door": {
-      "additionalProperties": {},
-      "description": "In-band front-door hint (first workflow-entry tool of a session): call plan_query(intent) first for the ordered multi-step plan.",
-      "properties": {},
-      "type": "object"
-    },
-    "_return_loop": {
-      "additionalProperties": {},
-      "description": "Suggested next-session delta call (get_changes since=24h) so you pull only what changed.",
-      "properties": {},
-      "type": "object"
-    },
-    "citation": {
-      "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."
-    },
-    "provenance": {
-      "additionalProperties": {},
-      "description": "Collection-level provenance block: {source, method, as_of, verification_counts, cite_url_template, license, cite_as}. Quote the verification level when citing.",
-      "properties": {},
-      "type": "object"
-    },
-    "quota": {
-      "additionalProperties": {},
-      "description": "Caller quota state (remaining calls, tier) when available.",
-      "properties": {},
-      "type": "object"
-    },
-    "site_evaluation_handoff": {
-      "anyOf": [
-        {
-          "items": {
-            "additionalProperties": {},
-            "properties": {},
-            "type": "object"
-          },
-          "type": "array"
-        },
-        {
-          "additionalProperties": {},
-          "properties": {},
-          "type": "object"
-        }
-      ],
-      "description": "Pre-built follow-up calls (analyze_site / get_water_risk args) when the payload carries coordinates — an array of {tool, parameters, why} entries."
-    }
-  },
-  "type": "object"
-}New value: +null

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#"

Changed7 schema fields changedAug 19, 2026

addedInput schema / properties / capacity_mw

Added value: +{
+  "description": "Target capacity in MW, e.g. 100.",
+  "type": "number"
+}

changedInput schema / properties / context / description

Previous value: -"Optional structured hints AND step-arg overrides: {lat, lon, iso, market, capacity_mw, candidate_id, state, since} — user-supplied values beat minted ones"New value: +"Optional structured hints AND step-arg overrides: {lat, lon, iso, market, capacity_mw, candidate_id, state, since} — user-supplied values beat minted ones. The typed top-level params below are merged into this and WIN on conflict."

addedInput schema / properties / iso

Added value: +{
+  "description": "ISO/RTO code to pin geography, e.g. \"PJM\", \"ERCOT\".",
+  "type": "string"
+}

addedInput schema / properties / lat

Added value: +{
+  "description": "Latitude for a specific site.",
+  "type": "number"
+}

addedInput schema / properties / lon

Added value: +{
+  "description": "Longitude for a specific site.",
+  "type": "number"
+}

addedInput schema / properties / market

Added value: +{
+  "description": "Metro slug or name to pin the analysis to, e.g. \"ashburn\". Beats any market the planner would mint.",
+  "type": "string"
+}

addedInput schema / properties / state

Added value: +{
+  "description": "US state code, e.g. \"VA\".",
+  "type": "string"
+}

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 changedAug 6, 2026

addedInput schema / properties / cohort

Added value: +{
+  "description": "Optional experiment tag for adoption/retention measurement, e.g. \"cohort.front_door\". Has NO effect on routing, planning, geography or results — it is recorded only. Put your user's question in `intent` and the tag HERE; never inside the intent string, which would break classification. Max 64 chars, [a-z0-9._-]; a malformed tag is ignored, never an error."
+}

Changed1 schema field changedJul 28, 2026

changedInput schema / properties / intent / description

Previous value: -"Natural-language question, e.g. \"rank markets for a 200MW AI campus\" — same as plan_query"New value: +"The user's infrastructure question, passed through UNCHANGED. Examples: \"rank markets for a 200 MW AI campus\" · \"evaluate 100 MW power headroom for a GPU training cluster in PJM\" · \"compare Dallas vs Phoenix for a hyperscale campus\" · \"find 100 MW of buildable capacity near Ashburn\" · \"where do fiber density and grid headroom overlap in Atlanta\""

AddedJul 26, 2026

TDQS

A4.1/5.0

Behavior5/5

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

Beyond the readOnly/idempotent/openWorld annotations, the description discloses the execution model in real detail: deterministic no-LLM routing, wave-by-wave sequencing with parallelism where the graph allows, capped per-finalist fan-out, hand-off resolution for metro_slug/candidate_id/ISO, and the exact `_entity=plan_execution` envelope shape including totals, minted, and replay. This tells an agent precisely what side effects to expect (none destructive) and what the response will contain, which is substantial value on top of annotations.

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

Conciseness3/5

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

It is front-loaded with the 'Use this when...' trigger and the critical 'One call plans AND answers' claim, so structure is sound. However, the opening topic enumeration runs to fifteen comma-separated domains and much of the envelope detail duplicates the output schema, making the description longer than the decision-relevant content requires.

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 an 11-parameter orchestrator with an output schema already present, this description covers every dimension an agent needs: when to pick it, what it does internally, how parameters merge, and what the envelope contains. Even the normally implicit concern of fan-out and step capping is addressed via max_steps/max_fanout defaults.

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 all 11 parameters are already documented in structured form, giving a baseline of 3. The description adds only 'Pass the user's question as `intent`' and reinforces that user-supplied values beat minted ones, both of which are already stated in the schema. The interesting dynamics it does explain (angle-bracket hand-off resolution and minting between steps) concern internal step wiring rather than the caller-facing parameters.

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

Purpose4/5

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

The first sentence names a specific verb+resource ('one-call planner over megawatts and power density, grid headroom...') and explicitly frames the tool as multi-topic orchestration that 'plans AND answers'. It differentiates itself from the single-purpose siblings by enumerating the topic domains it chains together, and it names plan_query as the underlying planner. It stops short of a crisp one-line 'this executes a multi-tool plan' statement, burying the identity inside a 15-item topic list.

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?

'Use this when a data center question spans several topics' and 'Recommended entry for a question that spans more than one of those' gives a clear selection rule that distinguishes it from the dozen granular get_* tools. The relationship to plan_query is hinted at ('the same planner plan_query exposes'), implying plan_query plans while this executes. It lacks an explicit exclusion clause such as 'for a single-metric lookup use get_grid_data instead'.

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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