Miso MCP server

@pipeworx/miso

MISO (Midcontinent ISO) real-time electricity data — fuel mix, load, five-minute LMPs, wind/solar forecast-vs-actual and transmission binding constraints for the 15-state footprint from Louisiana to Minnesota plus Manitoba.

Part of Pipeworx — an MCP gateway connecting AI agents to 1679+ live data sources.

Tools

wind, solar, hydro, battery storage, other) plus the footprint total. current (default) = the latest 5-minute interval; today / yesterday = the whole day.

• misofuelmix(period?) — MW generated per fuel category (coal, gas, nuclear,

loss and congestion components and every ancillary-service clearing price (regulation, mileage, spinning, supplemental, short-term reserve, ramp up/down). ~1,600 nodes across the Central, North and South regions.

• miso_lmp(region?, node?, limit?) — five-minute LMP $/MWh per pricing node with

shadow price. transmission (default), subregional or reserve.

• misobindingconstraints(kind?) — the flowgates currently binding, with their

forecast for the same hours, plus the five-minute total-load series.

• miso_load() — today's actual load hour by hour against the medium-term load

• misowindsolar() — hourly wind and solar forecast vs actual MW.

Auth

Keyless. No registration, no key, no rate-limit documented.

Data sources

rendered as HTML at the root of that host.

• — the live public API. Endpoint index is

page for these feeds.

• — MISO's own

Traps

The endpoint everyone still cites is a silent zero. MISO's long-documented Real-Time Data Broker —

https://api.misoenergy.org/MISORTWDDataBroker/DataBrokerServices.asmx
  ?messageType=getfuelmix&returnType=json

— still resolves, still answers HTTP 200, and returns

{"error": "no data", "See": "https://www.misoenergy.org/markets-and-operations/rtdataapis"}

for every data messageType (getfuelmix, getlmpconsolidatedtable, gettotalload, …). Only getapiversion still carries a payload. Any client that checks res.ok reports success forever while returning nothing — the failure class in docs/silent-zero-policy.md. Verified dead 2026-09-17. This pack talks only to public-api.misoenergy.org, and misoGet throws on a body carrying a string error so a future retirement fails loudly instead of silently.

Other things worth knowing:

feed comma-grouped as "99,978". num() coerces and returns null — never 0 — for a blank, so "no reading" never reads as "zero megawatts".

• Every number is a string. "34168", and in the /api/Snapshot display

daylight saving; the payload labels this explicitly.

• Timestamps are EST year-round. MISO does not shift the market clock for

for the full day.

• /api/FuelMix is one interval, not a series. Use /Today or /Yesterday

right beside it, which uses Hour. Keying both off Hour silently produces an all-null forecast column.

• MediumTermLoadForecast uses HourEnding, not Hour — unlike ClearedMW

are absent rather than meaningful. This pack emits null for an actual whose hour has not happened, rather than reporting 0 MW of wind at 11pm.

• /api/WindSolar/GetCombined returns future hours too, with actuals that

--compressed prints binary. Workers' fetch decompresses automatically.

• getapiversion is gzipped without negotiation, so a raw curl without

Quick Start

Add to your MCP client (Claude Desktop, Cursor, Windsurf, etc.):

{
  "mcpServers": {
    "miso": {
      "url": "https://gateway.pipeworx.io/miso/mcp"
    }
  }
}

What this endpoint actually serves

Shortened. The full README is on GitHub.