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DC Hub: Data Center, Power Grid & Energy Intelligence

Save To Shortlist

save_to_shortlist

Save a data center site to a persistent named shortlist, snapshotting its objectives and score so you can re-score it later against evolving national baselines.

Instructions

Use this when the user wants to keep a data center site on a named shortlist that survives across conversations (Phase 5 statefulness). Snapshots the site's objectives + its current percentile objective_score, so you can re-score it later against the evolving national baseline. Use to build a durable siting shortlist across days/weeks; the list is scoped to your API key. Pair with get_shortlist to re-score + see drift. MINIMAL call: save_to_shortlist(shortlist_name="my-targets", site={site_ref, lat, lng, capacity_mw}) — objectives are optional. If you DID rank the site (analyze_site / rank_sites), pass those metric fields inside site and your objectives map too, and the re-scoring reuses them. Requires an API key so the list is private to you and survives to your next conversation: call claim_free_key first if you have none.

Input Schema

NameRequiredDescriptionDefault
siteYesSite object. MINIMAL form is enough: {site_ref, lat, lng, capacity_mw}. Richer is better — add any analyze_site metric fields (risk_resilience, fiber_connectivity, water score…) and those become what gets re-scored later.
notesNoOptional free-text note, e.g. "strong fiber, acceptable water"
objectivesNoOPTIONAL {field: signedWeight} map (+maximize/-minimize) if this site was ranked under explicit objectives — stored so re-scoring reuses the same criteria. Omit it and DC Hub weights the site's own metric fields equally.
shortlist_nameYesName of the shortlist, e.g. "Q3-2026-1GW-targets" — created if new. REQUIRED.

Output Schema

NameRequiredDescriptionDefault

No arguments

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed9 schema fields changedv2.12.45
    • 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
      Removed value: -{
      -  "description": "Payload class (facility|market|iso_grid|queue_results|deal|report|response); branch on it.",
      -  "type": "string"
      -}
    • removedOutput schema / properties / _front_door
      Removed value: -{
      -  "additionalProperties": {},
      -  "description": "First-tool hint: plan_query(intent) returns the ordered plan.",
      -  "properties": {},
      -  "type": "object"
      -}
    • removedOutput schema / properties / _return_loop
      Removed value: -{
      -  "additionalProperties": {},
      -  "description": "Next-session delta call (get_changes).",
      -  "properties": {},
      -  "type": "object"
      -}
    • removedOutput schema / properties / citation
      Removed value: -{
      -  "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."
      -}
    • removedOutput schema / properties / provenance
      Removed value: -{
      -  "additionalProperties": {},
      -  "description": "Source, method, as_of, verification_counts, license, cite_as; quote it when citing.",
      -  "properties": {},
      -  "type": "object"
      -}
    • removedOutput schema / properties / quota
      Removed value: -{
      -  "additionalProperties": {},
      -  "description": "Caller quota state (remaining calls, tier).",
      -  "properties": {},
      -  "type": "object"
      -}
    • removedOutput schema / properties / site_evaluation_handoff
      Removed value: -{
      -  "anyOf": [
      -    {
      -      "items": {
      -        "additionalProperties": {},
      -        "properties": {},
      -        "type": "object"
      -      },
      -      "type": "array"
      -    },
      -    {
      -      "additionalProperties": {},
      -      "properties": {},
      -      "type": "object"
      -    }
      -  ],
      -  "description": "Follow-up calls [{tool, parameters, why}] when the payload carries coordinates."
      -}
  2. Changed8 schema fields changedv2.12.43
    • 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: +"DC Hub envelope: tool data fields ride at the top level beside these keys."
    • changedOutput schema / properties / _entity / description
      Previous value: -"Payload class discriminator (e.g. facility|market|iso_grid|queue_results|deal|report|response) — branch on this before parsing the rest."New value: +"Payload class (facility|market|iso_grid|queue_results|deal|report|response); branch on it."
    • changedOutput schema / properties / _front_door / description
      Previous value: -"In-band front-door hint (first workflow-entry tool of a session): call plan_query(intent) first for the ordered multi-step plan."New value: +"First-tool hint: plan_query(intent) returns the ordered plan."
    • changedOutput schema / properties / _return_loop / description
      Previous value: -"Suggested next-session delta call (get_changes since=24h) so you pull only what changed."New value: +"Next-session delta call (get_changes)."
    • changedOutput schema / properties / citation / description
      Previous 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."New value: +"How to attribute DC Hub: {source, url, license, cite_as, retrieved_at}, or the attribution line as a string."
    • changedOutput schema / properties / provenance / description
      Previous value: -"Collection-level provenance block: {source, method, as_of, verification_counts, cite_url_template, license, cite_as}. Quote the verification level when citing."New value: +"Source, method, as_of, verification_counts, license, cite_as; quote it when citing."
    • changedOutput schema / properties / quota / description
      Previous value: -"Caller quota state (remaining calls, tier) when available."New value: +"Caller quota state (remaining calls, tier)."
    • changedOutput schema / properties / site_evaluation_handoff / description
      Previous value: -"Pre-built follow-up calls (analyze_site / get_water_risk args) when the payload carries coordinates — an array of {tool, parameters, why} entries."New value: +"Follow-up calls [{tool, parameters, why}] when the payload carries coordinates."
  3. 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#"
  4. Changed5 schema fields changedv2.3.20
    • removedOutput schema / properties / citation / additionalProperties
      Removed value: -{}
    • addedOutput schema / properties / citation / anyOf
      Added value: +[
      +  {
      +    "additionalProperties": {},
      +    "properties": {},
      +    "type": "object"
      +  },
      +  {
      +    "type": "string"
      +  }
      +]
    • changedOutput schema / properties / citation / description
      Previous value: -"Machine-readable citation: how to attribute DC Hub (dchub.cloud) for this payload."New value: +"Machine-readable citation: how to attribute DC Hub (dchub.cloud) for this payload. Normally an OBJECT {source, url, license, cite_as, retrieved_at}; a bare string is accepted and carries the attribution line itself."
    • removedOutput schema / properties / citation / properties
      Removed value: -{}
    • removedOutput schema / properties / citation / type
      Removed value: -"object"
  5. Changed4 schema fields changedv2.3.14
    • changedInput schema / properties / objectives / description
      Previous value: -"The {field: signedWeight} objectives this site was ranked under (+maximize/-minimize) — stored so re-scoring uses the same criteria"New value: +"OPTIONAL {field: signedWeight} map (+maximize/-minimize) if this site was ranked under explicit objectives — stored so re-scoring reuses the same criteria. Omit it and DC Hub weights the site's own metric fields equally."
    • changedInput schema / properties / shortlist_name / description
      Previous value: -"Name of the shortlist, e.g. \"Q3-2026-1GW-targets\" — created if new"New value: +"Name of the shortlist, e.g. \"Q3-2026-1GW-targets\" — created if new. REQUIRED."
    • changedInput schema / properties / site / description
      Previous value: -"Site object: {site_ref?, lat, lng, capacity_mw, <metric fields from analyze_site>} — the metrics are what get re-scored later"New value: +"Site object. MINIMAL form is enough: {site_ref, lat, lng, capacity_mw}. Richer is better — add any analyze_site metric fields (risk_resilience, fiber_connectivity, water score…) and those become what gets re-scored later."
    • changedInput schema / required
      Previous value: -[
      -  "site",
      -  "objectives"
      -]New value: +[
      +  "shortlist_name",
      +  "site"
      +]
  6. Changed1 schema field changedv2.3.12
    • 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"
      +    },
      +    "_front_door": {
      +      "additionalProperties": {},
      +      "description": "In-band front-door hint (first workflow-entry tool of a session): call plan_query(intent) first for the ordered multi-step plan.",
      +      "properties": {},
      +      "type": "object"
      +    },
      +    "_return_loop": {
      +      "additionalProperties": {},
      +      "description": "Suggested next-session delta call (get_changes since=24h) so you pull only what changed.",
      +      "properties": {},
      +      "type": "object"
      +    },
      +    "citation": {
      +      "additionalProperties": {},
      +      "description": "Machine-readable citation: how to attribute DC Hub (dchub.cloud) for this payload.",
      +      "properties": {},
      +      "type": "object"
      +    },
      +    "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"
      +}
  7. Addedv2.3.8

TDQS

A4.8/5.0
Behavior5/5

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

Annotations only cover the write/idempotency/safety profile. The description adds substantially more: what is persisted (objectives map + current percentile objective_score), the re-scoring/drift semantics, that the list survives across conversations, and that it is scoped to the caller's API key, which implies an auth requirement. That is real behavioral context beyond the 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 and dense, with the persistence rationale stated first and the call mechanics after. Slightly heavy: the minimal-site guidance appears in both the description and the site property schema, and the em-dash parentheticals ('Phase 5 statefulness') add noise an agent does not need to invoke the tool.

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?

A mutation tool with an output schema, so return values need not be described. Prerequisite (API key), scoping, persistence horizon, what gets stored, and the follow-up tool are all present; nothing an agent needs to call this correctly is missing.

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

Parameters4/5

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

Schema description coverage is 100%, so the baseline is 3, and the schema itself already explains objectives semantics and the site object. The description earns above baseline by giving a concrete minimal call signature with literal argument values and by clarifying the ranked-vs-unranked fork that determines whether objectives/metrics matter at call time.

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 ('keep a data center site on a named shortlist that survives across conversations') and immediately distinguishes the artifact from siblings: it is durable, API-key-scoped state paired with get_shortlist, not a one-off save_site. An agent can tell it apart from save_site, list_saved_sites, and get_shortlist without opening a schema.

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 ('build a durable siting shortlist across days/weeks'), explicit minimal invocation with concrete argument values, explicit conditional guidance ('if you DID rank the site... pass those metric fields'), and an explicit prerequisite with the alternative named ('call claim_free_key first if you have none'). It also names get_shortlist as the downstream partner.

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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