OWNER-REVIEWED USE CASE

Using Magpie MCP to check state cash grain prices and daily history

[1]

Published 10/28/2026 · Project source ↗

Magpie provides tools for the latest cash grain price and daily cash price history for one grain commodity in one state. [1]

Verification: not independently verified These source claims are documented, not independently tested results.

The agricultural problem

A user may want to look up a grain commodity’s latest cash price and daily cash price history for a state. [1]

What the AI agent does

An AI agent can use Magpie’s get_grain_price tool for the latest cash grain price for one commodity in one state and get_grain_history for daily cash price history for one grain commodity in one state. [1]

Expected output

The documented grain-prices REST endpoint returns USDA cash bids with provenance. [2]

Inputs and data

  • A grain commodity and a state for the cash-price lookup; the README gives Illinois corn as an example. [1]

Workflow

  1. Use get_grain_price for the latest cash price, then get_grain_history for daily cash price history for that grain commodity and state. [1]
  2. Illustrative example: look up the latest Illinois corn cash price and its daily cash price history. [1]
  3. The README documents GET /v1/grain/prices?limit=1 as returning USDA cash bids with provenance. [2]

Tools and setup

  • Add Magpie to an MCP client using the documented JSON configuration with mcpServers.magpie.url set to https://ag.morningbrief.link/mcp. [3]

Costs

Unknown — the reviewed source does not verify a cost for this workflow.

Limitations

  • Magpie’s data is USDA-only; when data is missing, Magpie says so instead of guessing. [4]

Source evidence

Documentation-backed source excerpts, not independent tests of the product. Expand a source to inspect its exact recorded excerpt.

  1. Source [1]Documentedget_grain_price provides the latest cash grain price for one commodity in one state (e.g. Illinois corn); get_grain_history…
    | Tool | What it does | |------|--------------| | get_grain_price | Latest cash grain price for one commodity in one state (e.g. Illinois corn) | | get_grain_history | Daily cash price history for one grain commodity in one state | | list_grain_products | Lists tracked grain commodities: corn, soybeans, wheat, sorghum, oats, barley, rice |
    Open original documentation ↗
  2. Source [2]DocumentedGET /v1/grain/prices?limit=1 returns USDA cash bids with provenance.
    GET /v1/grain/prices?limit=1 returns USDA cash bids with provenance:
    Open original documentation ↗
  3. Source [3]DocumentedThe documented JSON configuration for adding Magpie to an MCP client sets mcpServers.magpie.url to…
    ```json { "mcpServers": { "magpie": { "url": "https://ag.morningbrief.link/mcp" } } } ```
    Open original documentation ↗
  4. Source [4]DocumentedData is USDA-only. When data is missing, Magpie says so instead of guessing.
    Data is USDA-only. When data is missing, Magpie says so instead of guessing — no data beats misleading data.
    Open original documentation ↗

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