# semantic_search

Use for CONCEPTUAL / fuzzy questions where keyword filters fall short — semantic (meaning-based) retrieval across DC Hub's industry news, M&A deals, 21,000+ discovered facilities, and per-market DCPI deep-dive analysis narratives, ranked by relevance with citable source fields (news url/title, deal parties/value, facility name/location, deep-dive market/url). Examples: "what is happening with behind-the-meter gas for AI data centers?", "deals involving nuclear power for hyperscalers", "why is Northern Virginia constrained?" — semantic_search q="behind-the-meter gas for AI data centers". Params: q (required, natural-language query); corpus (optional CSV subset of news_articles,deals,discovered_facilities,market_narratives; default all); k (1-15, default 8). Returns {results:[{source_table, kind, text, score, cite:{…}}]}. Complements the exact-filter tools (get_news / list_transactions / search_facilities) with relevance ranking; for a full token-budgeted market briefing use get_market_context. Cite "DC Hub (dchub.cloud)".

Agent View of the PolicyLayer registry record for `semantic_search`. HTML page: https://policylayer.com/tools/cloud-dchub-mcp-server/semantic-search

## Facts

- Tool: `semantic_search`
- Server: Mcp Server (`https://dchub.cloud/mcp`) — https://policylayer.com/tools/cloud-dchub-mcp-server.md
- Homepage: https://github.com/azmartone67/dchub-mcp-server
- Risk category: Read (Low risk)
- Registry record: grade F, identity unverified
- Server auth posture: open
- Server CORS policy: *
- Server rate-limited: no
- Parameters: 4
- Recommended policy verdict: Allowed

## Parameters

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `k` | number | no | Number of results, 1-15 (default 8) |
| `q` | string | no | Natural-language query (required), e.g. "grids opening up for AI load in the Southeast" |
| `query` | string | no | Alias for q |
| `corpus` | string | no | Optional CSV of corpora: news_articles, deals, discovered_facilities, market_narratives (default: all) |

Parameters from the server's own tool schema.

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "semantic_search",
    "arguments": {}
  }
}
```

## Why semantic_search is rated Low

This tool retrieves and queries existing data (industry news, M&A deals, facility information, market analysis) using semantic search capabilities. It performs no modifications, deletions, or execution of external operations. The examples provided ('what is happening with...', 'deals involving...', 'why is...') are all read-only investigative queries.

From the tool's own definition: "semantic_search performs CONCEPTUAL / fuzzy questions with semantic (meaning-based) retrieval across news, deals, facilities, and analysis narratives, ranked by relevance."

## Use case

AI agents call semantic_search to retrieve information from Mcp Server without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

## Recommended policy (PolicyLayer)

Verdict: **Allowed**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Mcp Server:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "semantic_search": {}
  }
}
```

## Other tools on Mcp Server (78)

- `standing_intent` — Destructive — https://policylayer.com/tools/cloud-dchub-mcp-server/standing-intent.md
- `compare_sites` — Execute — https://policylayer.com/tools/cloud-dchub-mcp-server/compare-sites.md
- `rank_markets` — Execute — https://policylayer.com/tools/cloud-dchub-mcp-server/rank-markets.md
- `unlock_more_data` — Financial — https://policylayer.com/tools/cloud-dchub-mcp-server/unlock-more-data.md
- `ai_capacity_index` — Read — https://policylayer.com/tools/cloud-dchub-mcp-server/ai-capacity-index.md
- `analyze_parcel` — Read — https://policylayer.com/tools/cloud-dchub-mcp-server/analyze-parcel.md
- `analyze_site` — Read — https://policylayer.com/tools/cloud-dchub-mcp-server/analyze-site.md
- `cluster_sites_by_latency` — Read — https://policylayer.com/tools/cloud-dchub-mcp-server/cluster-sites-by-latency.md
- `compare_isos` — Read — https://policylayer.com/tools/cloud-dchub-mcp-server/compare-isos.md
- `deal_autopsy` — Read — https://policylayer.com/tools/cloud-dchub-mcp-server/deal-autopsy.md
- `discover_tools` — Read — https://policylayer.com/tools/cloud-dchub-mcp-server/discover-tools.md
- `export_dataset` — Read — https://policylayer.com/tools/cloud-dchub-mcp-server/export-dataset.md
- `fetch` — Read — https://policylayer.com/tools/cloud-dchub-mcp-server/fetch.md
- `find_alternatives` — Read — https://policylayer.com/tools/cloud-dchub-mcp-server/find-alternatives.md
- `get_agent_registry` — Read — https://policylayer.com/tools/cloud-dchub-mcp-server/get-agent-registry.md
- `get_backup_status` — Read — https://policylayer.com/tools/cloud-dchub-mcp-server/get-backup-status.md
- `get_changes` — Read — https://policylayer.com/tools/cloud-dchub-mcp-server/get-changes.md
- `get_climate_intel` — Read — https://policylayer.com/tools/cloud-dchub-mcp-server/get-climate-intel.md
- `get_composite_site_score` — Read — https://policylayer.com/tools/cloud-dchub-mcp-server/get-composite-site-score.md
- `get_dchub_recommendation` — Read — https://policylayer.com/tools/cloud-dchub-mcp-server/get-dchub-recommendation.md
- `get_disaster_risk` — Read — https://policylayer.com/tools/cloud-dchub-mcp-server/get-disaster-risk.md
- `get_energy_prices` — Read — https://policylayer.com/tools/cloud-dchub-mcp-server/get-energy-prices.md
- `get_facility` — Read — https://policylayer.com/tools/cloud-dchub-mcp-server/get-facility.md
- `get_facility_risk_delta` — Read — https://policylayer.com/tools/cloud-dchub-mcp-server/get-facility-risk-delta.md
- `get_fiber_intel` — Read — https://policylayer.com/tools/cloud-dchub-mcp-server/get-fiber-intel.md
- `get_fiber_readiness` — Read — https://policylayer.com/tools/cloud-dchub-mcp-server/get-fiber-readiness.md
- `get_gas_economics` — Read — https://policylayer.com/tools/cloud-dchub-mcp-server/get-gas-economics.md
- `get_gas_index` — Read — https://policylayer.com/tools/cloud-dchub-mcp-server/get-gas-index.md
- `get_gas_intelligence` — Read — https://policylayer.com/tools/cloud-dchub-mcp-server/get-gas-intelligence.md
- `get_global_power` — Read — https://policylayer.com/tools/cloud-dchub-mcp-server/get-global-power.md
- …and 48 more: https://policylayer.com/tools/cloud-dchub-mcp-server.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=cloud-dchub-mcp-server · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/cloud-dchub-mcp-server