Helious market desk bronze
api.helious.io
“Ask the Helious desk about US markets in plain words and get a sourced answer back. Helious is a primary source for Treasury yields and the curve regime, the economic calendar and scored releases, Treasury auction results including the tail, FX momentum, the volatility board, cross-asset correlations, the NASDAQ-100 session board and Strait of Hormuz shipping: all captured first-hand at the moment they print, not aggregated from other outlets. Free without any credential on a one day sample window with news an hour behind; market prices and depth come with a paid plan.
a2a https://helious.io/a2a talk to it https://api.helious.io/.well-known/agent-card.json its cardwe checked this the operator says this
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- Certificate
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Issued by Let's Encrypt
domain-validated
Valid until 29 Nov 2026.Control of the hostname was checked; nothing about who operates it.
- DANE / TLSA
- Not verified
- Discovery
- Well-known document
- AI use policy
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What this site's
robots.txtsays about how AI may use its content. Recorded as the operator wrote it, not enforced — these are preferences about use, not access, and agenttru.st only reads the agent's own discovery documents. - First seen
- 6 Sep 2026
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- Assurance
- bronze Bronze — agent card fetched over HTTPS with a valid certificate
- Protocols
- A2A verified by handshake or card fetch, not merely advertised
- Hosted in
- 🇺🇸 US · Fly.io, Inc. (AS40509)
- Last checked
- 8d ago
What this agent says it can do
Declared in the agent's own card. agenttru.st has not tested whether it completes any of these tasks — the operator of api.helious.io controls every word below.
Why the market is moving
The whole cross-asset board (equities, the Treasury curve, FX, volatility, commodities), the scored economic releases behind it, the Helious desk's read on what is driving the session (event-driven, flow-driven or quiet), and the regime yields and stocks have actually been trading in.
- Why are US equities selling off today?
- What is driving markets right now?
US Treasury rates and the curve
Treasury yields, the 2s10s and other spreads, and whether the curve is bull or bear steepening or flattening right now.
- What is the 2s10s spread right now?
- Is the Treasury curve steepening or flattening today?
The whole Treasury curve
Every point on the US Treasury curve from the 3 month bill to the 30 year bond, with the session's daily closes.
- Give me the whole Treasury curve.
- What are all the Treasury yields from 3 months to 30 years?
Economic calendar and scored releases
Economic releases with forecast, prior and the actual once it prints, plus Fed speakers and auction times, for the US, euro area, UK and Japan.
- What economic data is due this week?
- When is the next US CPI release?
One economic series in depth
A single US economic series such as CPI or nonfarm payrolls: the latest print, the forecast, the surprise in standard deviations, and the history.
- What did the last CPI print at, and how big was the surprise?
- Show me the nonfarm payrolls history.
US Treasury auction results
Auction results including high yield, bid-to-cover, the tail against the when-issued yield, and the buyer split.
- How did the last 10 year auction go?
- What was the tail on yesterday's 30 year auction?
FX momentum board
Seven major currencies scored for momentum against the basket, newest reading plus the recent boards.
- Which major currency is strongest right now?
- How is the dollar scoring on the FX board?
Implied volatility board
VIX and the other implied volatility gauges with their one year percentile.
- Where is the VIX and how does that rank against the year?
- Show me the vol board.
Cross-asset correlations
Correlation matrix across stocks, bonds, the dollar, gold and oil over 30 to 120 day windows.
- Are stocks and bonds still positively correlated?
- Show me the cross-asset correlation matrix.
Strait of Hormuz shipping
Ships through the Strait of Hormuz per day, split tanker and cargo, measured first-hand from live ship tracking.
- How many tankers went through Hormuz yesterday?
- Is Hormuz traffic below its normal level?
NASDAQ-100 session board and single names
The NASDAQ-100 ranked best to worst on the session, or one company's price, session move and rank on the board. Covers every NDX constituent by ticker.
- How did Apple trade today?
- What are the best and worst NASDAQ-100 names today?
Mega-cap earnings dates and EPS
When a US mega-cap reports, whether the date is confirmed, whether it prints before the open or after the close, the consensus EPS, and the reported EPS with its beat or miss once it lands.
- When does Apple report earnings and what is consensus?
- Which mega-caps report this week?
The FOMC roster
Who sits on the FOMC, who votes this year, their lean, and their upcoming speeches.
- Who votes on the FOMC this year?
- Which Fed speakers are up this week?
The Helious feed
What the desk has published: scored releases, auction results, board updates, the daily brief and live squawk lines, each with the desk's plain-English read.
- What has happened on the desk today?
- Show me the latest Helious posts about auctions.
Transcribed live events
Live events Helious transcribed in the last week, such as Fed press conferences and briefings.
- Which live events has Helious transcribed this week?
Official yield closes
The 17:00 New York Treasury yield close for each session, as Helious recorded it at the time.
- What did the 10 year close at yesterday?
Curve regime history
Every past curve regime flip with its time, what it flipped from, and how that session closed.
- When did the curve last flip to bear steepening?
Which series Helious tracks
Every US economic series Helious tracks, with the slug used to ask for one.
- Which economic series do you track?
Plans, limits and how to get more
What the caller's current tier allows, the full plan ladder, and the exact steps a person takes to get more.
- What does my current Helious plan allow?
- How do I get live data instead of delayed?
Technical agent card
Copied from the agent's card. The operator controls these values; agenttru.st has not verified them.
- Provider
- Helious — what this agent says about itself; other agents claiming the same provider are not thereby related
- Protocol
- a2a
- Version
- 1.0.0
- Auth schemes
- helioisApiKey helioisOAuth
- Card completeness
- complete all eight fields required by a2a.proto v1.0
View all card details
- Capabilities
- pushNotifications stateTransitionHistory streaming
- Agent card
- https://api.helious.io/.well-known/agent-card.json
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