Primary Source Commodities

Reliability

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How to connect

Add it to any MCP client that supports remote servers.

{
  "mcpServers": {
    "primary-source-commodities": {
      "type": "http",
      "url": "https://api.commodities.sh/api/mcp"
    }
  }
}

11 tools

• catalog.list

  List every commodity instrument in the catalog with sector, unit, primary source, and freshness metadata. Call this first to discover valid codes before price.latest or inventory.get. Free discovery tool — no payment required.

• price.latest

  Return the latest cash/fundies observation for one instrument code. Use catalog.list to discover codes such as CL, GC, or ZC. Response follows the shared observation contract with provenance and license tags.

• inventory.get

  Fetch EIA weekly petroleum inventory levels. Omit series to list all latest inventory points, or pass a series key to get week-over-week change, vs-5y deviation, and a surprise label for that series.

• positioning.get

  Return the latest CFTC Commitments of Traders managed-money positioning for an instrument code. Includes long, short, net, and week-over-week net change with source URL.

• spread.get

  Compute a derived spread observation: 3-2-1 crack, soybean crush, WTI-Brent basis, or calendar (calendar requires licensed curve data and may return available=false). Prefer crack/crush/basis for live derived values with formula and inputs.

• price.history

  Return historical observations for an instrument code (up to 500 points). Use after price.latest when you need a short time series for the same code.

• fx.latest

  Return the latest FX rate observation for a pair or FRED FX series. Useful alongside commodity prices when converting cash values across currencies.

• fundamentals.get

  Fetch a fundamentals document: USDA WASDE, crop progress, export sales, or USGS mineral summaries. Choose kind based on the ags/metals question you are answering.

• snapshot.get

  Build a sector snapshot bundling prices, inventories, spreads, and related fundies for energy, metals, ags, or all sectors. Prefer this over calling many single-observation tools when you need a full sector picture.

• calendar.get

  List EIA, USDA, and CFTC release calendar entries with cadence, typical Eastern time, and next-hint notes. Free discovery tool — call before scheduling agents around inventory or WASDE prints.

• decision.get

  Build a deterministic decision pack for energy, metals, ags, or all sectors. Returns method, signals with direction/rationale, an embedded snapshot, and a disclaimer — no ML model, rule-based only.

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