Many of the highest-credit Hyperion sessions were those that were scraping pipeline notices directly. To reduce your credit costs, we are making those notices available in a datalink, so that all you need to do is query it from us, a much cheaper operation. So, we are releasing our pipeline notices dataset (hdl.recent_pipeline_notices), now available through the agent and the V4 API. This dataset provides an analysis-ready feed of operational notices — force majeure events, operational flow orders, maintenance windows, and capacity constraints — across approximately 150 U.S. interstate natural gas pipelines. It replaces the need to monitor individual operator websites and consolidates all critical pipeline events into a single, queryable table. You should build new sessions that use the new data - existing sessions that use old scrape-first methods could be directed to the new tables, but these changes are not reliable.
Full documentation is available by asking the agent, or in our dataset guide. but in summary:
Each row represents a single notice posting - including updates/ changes - from a pipeline operator. Key fields include:
Pipeline identification - pipeline_name, full_pipeline_name, and smx_tsp_id (pipeline identifier, joinable to hdl.pipeline_flow for flow impact analysis)
Notice classification - notice_type (normalized categories, see below), raw_notice_type (original pipeline text) and critical_notice_indicator (Y/N flag for high-priority events)
Timing - notice_effective_datetime, notice_end_datetime, and posting_dt give you the full lifecycle of each event
Supersession tracking - prior_notice_identifier links updated notices to their predecessors, so you can follow the evolution of an ongoing event. Note this is only as reliable as the pipeline's posting - it's from them - so reliability is not assured.
Every notice is classified into one of the following normalized types, while still making the pipeline's notice
| Category | Description |
| Critical Notice | High-priority operational alerts flagged by the pipeline as critical |
| Maintenance | Planned or unplanned maintenance affecting capacity or operations |
| Operational Alert | General operational updates — pressure changes, flow restrictions, system advisories |
| Capacity Constraint | Reduced available capacity at specific points or segments |
| Storage Notice | Injection/withdrawal advisories, storage field operational updates |
| OFO | Operational Flow Orders requiring shippers to balance or curtail |
| Force Majeure | Unforeseeable events (weather, equipment failure) suspending normal obligations |
| Scheduling Alert | Changes to nomination cycles, scheduling timelines, or cut deadlines |
The easiest way to work with pipeline notices is through the SynMax Agent. Just ask in natural language:
"Show me all active force majeure notices"
"Are there any critical notices on Transco right now?"
"What maintenance events are scheduled on Permian takeaway pipelines this month?"
"Build me a dashboard that monitors critical pipeline notices and their flow impact"
"How have notices on El Paso Natural Gas trended over the past 90 days?"
The agent will query the data, join it to pipeline flows when relevant, and visualize the results — no code required.
You should build new sessions that use the new data - Existing sessions will continue to the old scrape-first methods. It is possible to guide the agent to use the new data in an old session, but it might revert unexpectedly.
For programmatic access, the dataset is available via the SynMax v4 API:
curl -X POST "https://hyperion.api.synmax.com/v4/query_datalink" \
-H "Access-Key: $SYNMAX_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"query": "SELECT pipeline_name, notice_type, critical_notice_description, notice_effective_datetime, notice_end_datetime FROM hdl.recent_pipeline_notices WHERE critical_notice_indicator = \'"'"'Y\'"'"' AND notice_end_datetime >= NOW() ORDER BY posting_dt DESC"
}'
or via python:
from synmax.hyperion.v4 import HyperionApiClient
client = HyperionApiClient(access_token="YOUR_API_TOKEN")
notices = client.query_datalink(
query="""
SELECT pipeline_name, notice_type, critical_notice_description,
notice_effective_datetime, notice_end_datetime
FROM hdl.recent_pipeline_notices
WHERE critical_notice_indicator = 'Y'
AND notice_end_datetime >= NOW()
ORDER BY posting_dt DESC
"""
)
df = notices.df()
Because it shares the smx_tsp_id key with hdl.pipeline_flow and hdl.pipeline_locations, you can join notices directly to flow data to quantify the impact of an event on scheduled volumes or capacity utilization.
The dataset currently covers ~150 pipelines (detailed below) sourced through our automated ingestion system, scraped at approximately 1/hour frequency (we can scrape some more frequently - please reach out if there are any that you'd like to see at a higher frequency). An additional ~35 smaller pipelines (primarily intrastate pipelines and storage operators) are covered through direct scraping via agent scraping, which will be automatically pulled in if you ask for a pipeline not in the database. We do intend to eventually add all of these pipelines into the datalink, so any sessions that are started from now on will make the swap automatically if they are added to the db.
The dataset is live now in alongside the existing pipeline flow and location tables. If you have questions or want help building a monitoring dashboard, reach out — we're happy to walk through the data. As usual, contact support@synmax.com with questions.
ANR
ANR Storage
ARLINGTON STORAGE
Adelphia Gateway
Algonquin
Alliance
Arkoma Connector
BBT AlaTenn
BBT Midla
Bbt Trans-Union Interstate Pipeline
Big Sandy Pipeline
Birdsboro Pipeline
Bison
Black Hills Shoshone
Black Marlin
Blue Lake Gas Storage
Bluewater Gas Storage
Boardwalk Storage
Bobcat Gas Storage
Cadeville Gas Storage
Caledonia Energy Partners
Cameron Interstate
Carolina Gas Transmission
Chandeleur Pipe Line
Cheniere Corpus Christi Pipeline
Cheyenne Connector
Cheyenne Plains
Colorado Interstate Gas (CIG)
Columbia Gas Transmission (CGT)
Columbia Gulf Transmission
Cove Point LNG
Creole Trail Pipeline
Crossroads Pipeline
Dauphin Island Gathering
Destin Pipeline
Discovery Pipeline
Double E
EQT Gathering
ETC Tiger
East Cheyenne Gas Storage
East Tennessee
Eastern Gas Transmission (Dominion)
Eastern Shore Natural Gas
El Paso Natural Gas
Elba Express
Enable Mississippi River
Equitrans
Fayetteville Express
Florida Gas Transmission (FGT)
Freebird Gas Storage
Garden Banks
Gas Transmission Northwest (GTN)
Generation Pipeline
Golden Pass Pipeline
Golden Triangle Storage
Great Basin Gas Transmission
Great Lakes Gas Transmission
Guardian Pipeline
Gulf Run
Gulf South
Gulfstream Natural Gas
Hardy Storage
High Island Offshore System (HIOS)
High Point Gas Transmission
Honeoye Storage
Horizon
KM ILLINOIS
KM Louisiana
KPC Pipeline
Kern River GT
Kinetica Deep Water Express
Kinetica Partners
Leaf River Energy Center
MHP Egan
MIGC
Maritimes & Northeast U.S.
Midcontinent Express
Midship
Midwestern Gas Transmission
Millennium
Mississippi Canyon
Mississippi Hub
MoGas Pipeline
Mojave
Monroe Gas Storage
Mountain Valley Pipeline
MountainWest
National Grid LNG
Natural Gas Pipeline (NGPL)
Nautilus Pipeline
Nexus U.S.
North Baja
Northern Border
Northern Natural (NNG)
Northwest (NWPL)
OkTex
Overthrust
Ozark GT
Panhandle Eastern
Perryville Gas Storage
Pine Prairie Energy Center
RH energytrans
Rager Mountain Storage
Rockies Express (REX)
Rover Pipeline
Ruby
SG Resources Mississippi
Sabal Trail
Sabine
Saltville Gas Storage
Sea Robin
Sierrita Gas Pipeline
SoCalGas
Southeast Supply Header
Southern LNG
Southern Natural Gas (SONAT)
Southern Star Central
Southwest Gas Storage
Stagecoach Pipeline
Steckman Ridge
Stingray Pipeline
Tallgrass Interstate
Tennessee Gas (TGP)
Texas Eastern (TETCO)
Texas Gas Transmission (TGT)
Trailblazer
TransColorado
Transcontinental (Transco)
Transwestern
Tres Palacios Gas Storage
Trunkline
Tuscarora GT
UGI Storage
UGI Sunbury
Valley Crossing Pipeline
Viking Gas Transmission
WBI Energy Transmission
WTG Hugoton
Washington 10 Storage
Westcoast Energy
White River Hub
Wyoming Interstate (WIC)
Young Gas Storage