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Helious market intelligence

REMOTE · HELIOUS.IO

US Treasury auction tails, the live curve regime, scored macro releases, and why rates moved.

Available components

0 this week 85 Trust /100

Last scanned (17 hours ago)

Scores higher than 90% of remote servers

Reachable. Last reached 6 Nov 2026.

Category Finance and Payments

Trust breakdown (7 categories)

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score → Why this is hard to score →

Endpoint Security83
  • The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
  • No authorisation is required to call this server. Nothing on it is marked destructive, but we can't show that an anonymous caller can only read: full credit needs the server to list at least one tool and every tool to be verifiably read-only. We use a best-effort check of tool names and descriptions to tell read-only tools from tools that change things, so some genuinely read-only tools may not get full credit. Names that start with a read verb (get, list, read, search and similar) and accurate readOnlyHint annotations help. Meet that to earn full credit, or require authorisation. See how to fix → View diagnostics → Partial
  • HTTPS is enforced; there's no plaintext access path. View diagnostics → Pass
  • The HSTS (Strict-Transport-Security) header is present. View diagnostics → Pass
  • DNSSEC is configured correctly; the domain's records validate against the full chain to the root. View diagnostics → Pass
Transport & Reachability100
Schema Quality & AI Usability62
  • AI-judged instruction clarity (good).Pass
  • Context-footprint check failed: tool/resource definitions use about 5325 tokens (~204/item across 26 items; 26 tools + 0 resources), over budget; trim descriptions and params. See how to fix → Fail
  • Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management100
  • No destabilizing schema changes in the last 30 days.Pass
Tool Coverage100
  • 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
  • 100% of tool parameters carry a description.Pass
Tool Safety100
  • No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
  • We read all 26 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
  • An AI judge read all 27 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities60
  • Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28. See how to fix → Fail
What we tested

Checks we ran (13)

  • TLS certificate
  • Authorization
  • HTTPS
  • HSTS header
  • DNSSEC
  • Transport
  • Schema quality
  • Stability
  • Tool coverage
  • Injection markers
  • Destructive annotations
  • Judged manipulation
  • MCP protocol

Does not apply to this hosted endpoint (2)

  • Supply Chain SecurityScored on package channels only. This is a hosted endpoint, so there is nothing to install or inspect.
  • Provenance & TransparencyScored on package channels only. This is a hosted endpoint, so there is nothing to install or inspect.

The score does not measure everything. What the score does not measure →

Changelog

Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.

  • 6 Nov 26 0
    • We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
  • 4 Nov 26 0
    • Tool “get_economic_calendar” rewrote its description, which is the text the model reads security
    • Tool “get_series” rewrote its description, which is the text the model reads security
    • “get_economic_calendar” added an optional parameter “event” cosmetic
    • “get_economic_calendar” added an optional parameter “since” cosmetic
    • “get_economic_calendar” reworded the description of “limit” cosmetic
  • 3 Nov 26 0
    • The server rewrote its instructions, which are the text every model session reads security
    • New tool “get_build_plan” functional
  • 1 Nov 26 0
    • Tool “get_yield_closes” rewrote its description, which is the text the model reads security
    • “get_yield_closes” added an optional parameter “before” cosmetic
  • 31 Oct 26 0
    • Tool “get_feed” rewrote its description, which is the text the model reads security
    • “get_feed” added an optional parameter “since” cosmetic
    • “get_feed” added an optional parameter “topics” cosmetic
  • 28 Oct 26 0
    • The server rewrote its instructions, which are the text every model session reads security
    • Tool “get_access_info” rewrote its description, which is the text the model reads security
    • Tool “get_auctions” rewrote its description, which is the text the model reads security
    • Tool “get_correlations” rewrote its description, which is the text the model reads security
    • Tool “get_document_digests” rewrote its description, which is the text the model reads security
    • Tool “get_feed” rewrote its description, which is the text the model reads security
    • Tool “get_fx_board” rewrote its description, which is the text the model reads security
    • Tool “get_market_context” rewrote its description, which is the text the model reads security
    • Tool “get_nasdaq100” rewrote its description, which is the text the model reads security
    • Tool “get_rates_and_curve” rewrote its description, which is the text the model reads security
    • Tool “get_treasury_curve” rewrote its description, which is the text the model reads security
    • Tool “get_vol_board” rewrote its description, which is the text the model reads security
    • Tool “get_yield_closes” rewrote its description, which is the text the model reads security
    • Tool “list_series” rewrote its description, which is the text the model reads security
    • Schema quality: 211 → 183 ▲ functional
    • Schema quality: excellent → good functional
    • “get_auctions” reworded the description of “fresh” cosmetic
    • “get_correlations” reworded the description of “fresh” cosmetic
    • “get_curve_history” reworded the description of “fresh” cosmetic
    • “get_document_digests” reworded the description of “fresh” cosmetic
    • “get_earnings” reworded the description of “fresh” cosmetic
    • “get_economic_calendar” reworded the description of “fresh” cosmetic
    • “get_fed_roster” reworded the description of “fresh” cosmetic
    • “get_feed” reworded the description of “fresh” cosmetic
    • “get_fx_board” reworded the description of “fresh” cosmetic
    • “get_hormuz_transits” reworded the description of “fresh” cosmetic
    • “get_inflation” reworded the description of “fresh” cosmetic
    • “get_jobs” reworded the description of “fresh” cosmetic
    • “get_market_context” reworded the description of “fresh” cosmetic
    • “get_nasdaq100” reworded the description of “fresh” cosmetic
    • “get_rate_odds” reworded the description of “fresh” cosmetic
    • “get_rate_path” reworded the description of “fresh” cosmetic
    • “get_rates_and_curve” reworded the description of “fresh” cosmetic
    • “get_series” reworded the description of “fresh” cosmetic
    • “get_squawk_sessions” reworded the description of “fresh” cosmetic
    • “get_treasury_curve” reworded the description of “fresh” cosmetic
    • “get_treasury_issuance” reworded the description of “fresh” cosmetic
    • “get_vol_board” reworded the description of “fresh” cosmetic
    • “get_yield_closes” reworded the description of “fresh” cosmetic
  • 27 Oct 26 0
    • The server rewrote its instructions, which are the text every model session reads security
  • 26 Oct 26 0
    • Tool “get_feed” rewrote its description, which is the text the model reads security
    • “get_feed” added an optional parameter “kind” cosmetic
    • “get_feed” reworded the description of “categories” cosmetic
Diagnostics

Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.

Captured 6 Nov 2026 · Probed https://helious.io/mcp

TLS valid

Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .

Subject Issuer Valid from Valid until Key Signature Serial
CN=helious.io CN=WE1,O=Google Trust Services,C=US 28 Oct 2026 26 Jan 2027 ECDSA 256 ECDSA-SHA256 2eaab90817b45c75134240f2535ccc2a
SANs: helious.io
CN=WE1,O=Google Trust Services,C=US (CA) CN=GTS Root R4,O=Google Trust Services LLC,C=US 13 Dec 2023 20 Feb 2029 ECDSA 256 ECDSA-SHA384 7ff31977972c224a76155d13b6d685e3
CN=GTS Root R4,O=Google Trust Services LLC,C=US (CA) CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE 15 Nov 2023 28 Jan 2028 ECDSA 384 SHA256-RSA 7fe530bf331343bedd821610493d8a1b

Background: What to check on a remote MCP endpoint →

DNSSEC secure

Validation of helious.io. — Secure

Zone DS Keys Algorithms Outcome
. Trust anchor 20326, 38696 8, 8 Verified
io. DS published 38690 8 Verified
helious.io. DS published 2371 13 Verified
helious.io. Verified address RRset verified with the apex keys
Authentication No authorisation required

The endpoint answered without asking for a token. Anyone who knows the URL can reach it.

Result No authorisation required
HTTP status 200
Header Value
strict-transport-security max-age=63072000; includeSubDomains
x-content-type-options nosniff

Background: How OAuth 2.1 works in the 2026 MCP spec →

Transports 2 probes
Transport URL Outcome Status Location
streamable-http https://helious.io/mcp Verified 200
http (plaintext) http://helious.io/mcp HTTPS enforced 301 https://helious.io/mcp
MCP tools · 26 exposed · ~4,914 tokens

The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →

Tool Tokens
get_access_info ~50

What the connected account can read, what a call costs and what is left this month, and the steps to relay to your user when a result needs more than the account allows. Draws no credit.

Input schema present but exposes no named parameters.

No output schema declared.

No examples provided.

get_auctions ~316

US Treasury auction results, measured by Helious at the close: the high yield, the tail against the when-issued yield, bid-to-cover against the tenor's twelve-auction average, who bought (indirect, direct, dealer), and the desk's strong, in line or weak verdict. Pass tenor to ask about one part of the curve, like 10-year-note or 30-year-bond, which is what you want for 'how did the last 10-year auction go'. The tail is the number that answers whether an auction was good or bad.

NameTypeReqDescription
freshboolean–Set true to ask for the live view of this one call, for 5 credits, where the connected account otherwise receives it an hour behind. Accepted and free where the account is already live. No effect wit…
limitinteger–Most auctions to return.
tenorstring–One tenor, like 10-year-note, 30-year-bond or 26-week-bill. Plain forms work too: '10y', '30 year'. Or a whole class: bills, notes, bonds, tips, frn. Or a curve SEGMENT, which is usually what 'the fr…

No output schema declared.

No examples provided.

get_build_plan ~200

What to build with Helious and how: for a stated goal, the tools to call in order, what each returns, what it costs in credits at your cadence, and which plan covers it. Use this when someone is building an integration, a bot, a dashboard or a strategy, before the first data call.

NameTypeReqDescription
cadencestring–How often it will run, like every 15 minutes, hourly, daily, every trading day or weekly. Prices the month; daily when empty.
clientstring–The client or stack it runs in, like claude, chatgpt, cursor or a script.
goalstring–What the person is building, in their words, like a bot that trades CPI, a macro regime dashboard or a CPI forecast. Empty returns the three things people build, in short form.
languagestring–python, javascript or another language, to point at the right sample.

No output schema declared.

No examples provided.

get_correlations ~144

Cross-asset correlation matrix (stocks, bonds, dollar, gold, oil) over 30 to 120 day windows. Newest reading plus past boards. Market data: numbers follow the connected account.

NameTypeReqDescription
freshboolean–Set true to ask for the live view of this one call, for 5 credits, where the connected account otherwise receives it an hour behind. Accepted and free where the account is already live. No effect wit…
limitinteger–Most rows to return.
sincestring–Oldest date to include, like 2026-06-01. How far back you can go depends on your plan.

No output schema declared.

No examples provided.

get_curve_history ~125

Past curve regime changes: every flip with its time, what it flipped from, and how the session closed.

NameTypeReqDescription
freshboolean–Set true to ask for the live view of this one call, for 5 credits, where the connected account otherwise receives it an hour behind. Accepted and free where the account is already live. No effect wit…
limitinteger–Most rows to return.
sincestring–Oldest date to include, like 2026-06-01. How far back you can go depends on your plan.

No output schema declared.

No examples provided.

get_document_digests ~205

The desk's read of FULL central bank documents, not headlines: FOMC minutes and Fed/ECB speeches read end to end. Each digest carries a summary, what is genuinely new versus what the market already knew, key findings with their market consequence, a hawkish/dovish committee lean, and quotes verified word for word against the source document. Minutes carry no bond or equity direction on purpose: they describe a meeting about three weeks earlier, so the desk states the lean and declines the market call. Delayed 60 minutes where the account receives news an hour behind.

NameTypeReqDescription
freshboolean–Set true to ask for the live view of this one call, for 5 credits, where the connected account otherwise receives it an hour behind. Accepted and free where the account is already live. No effect wit…
kindstring–minutes, speech, or all (default).
limitinteger–Most digests to return.

No output schema declared.

No examples provided.

get_earnings ~176

US mega-cap earnings: when a company reports, whether that date is confirmed or still an estimate, whether it prints before the open or after the close, the consensus EPS, and once it lands the reported EPS with the beat or miss. Pass symbol for one name, like AAPL. This is the tool for any question about a company's earnings date or EPS.

NameTypeReqDescription
freshboolean–Set true to ask for the live view of this one call, for 5 credits, where the connected account otherwise receives it an hour behind. Accepted and free where the account is already live. No effect wit…
limitinteger–Most rows to return.
symbolstring–One or more tickers, comma separated, like AAPL or AAPL,MSFT. Empty returns every name tracked.

No output schema declared.

No examples provided.

get_economic_calendar ~385

Economic releases with forecasts, prior values and the actual once it prints, plus Fed speakers and auction times. Defaults to yesterday through the next 7 days; widen days_back and days_ahead to see more, or filter to one country like US, EU, GB or JP. Pass event to read one release's consensus record instead: for each past print the consensus that stood, the first actual, the previous and the revised prior, with its surprise, newest first. Across the US, the euro area, the UK, Japan and Germany; how far back a call reads is the plan's history window (12 months on Starter, 24 on Pro, 10 years on Ultimate).

NameTypeReqDescription
countrystring–Two-letter country or bloc, like US, EU, GB, JP. Empty means everywhere.
days_aheadinteger–How many days ahead to include. Default 7, up to 365.
days_backinteger–How many days of already-printed events to include. Default 1, up to 90.
eventstring–One release whose consensus record to read: a series slug like cpi, or a release name as the calendar prints it, like Consumer Price Index (MoM) or GB: Retail Sales (MoM).
freshboolean–Set true to ask for the live view of this one call, for 5 credits, where the connected account otherwise receives it an hour behind. Accepted and free where the account is already live. No effect wit…
limitinteger–Most events to return. Default 100. With event, most rows, up to 520.
sincestring–With event: the oldest release date to include, like 2018-01-01. How far back you can go depends on your plan.

No output schema declared.

No examples provided.

get_fed_roster ~87

Who is on the FOMC: governors and presidents, who votes this year, their lean, and their upcoming speeches.

NameTypeReqDescription
freshboolean–Set true to ask for the live view of this one call, for 5 credits, where the connected account otherwise receives it an hour behind. Accepted and free where the account is already live. No effect wit…

No output schema declared.

No examples provided.

get_feed ~669

The Helious feed, newest first: the posts Helious publishes (kind post: releases with their surprise, auction results, board updates, the daily brief and live squawk lines) and the wire headlines it carries (kind headline: breaking news, geopolitics, official statements, central bank speakers, bank and business notes). Every item has a stable id, and items carry two score channels on a -10 to +10 scale: score and direction for bonds, equity_score and equity_direction for stocks. The same story can be bullish for bonds and bearish for stocks, so read the channel you trade. topic is what the item is about, the code the terminal prints on the row (equities, bonds, cb, geo, data, chatter); category is only the lane it came in on, so a stock story off the news wire has category news and topic equities. Most items carry helious_read, Helious's plain-English line on why it matters. A headline also carries carried_at (when Helious put it on the tape; created_at is when it was published) and a URL-free thread_id that stays the same when a story is retitled. No headline names its outlet, author or link. Depth follows the connected account for the permanent posts: releases, auctions, desk posts, the brief, the minutes. Headlines are kept 7 days whatever the plan (official statements and Fed speakers 400 days), as are squawk lines and the board lanes. Optional q filters by word; categories narrows to chosen lanes; kind narrows to headline or post; topics narrows to what items are about; since moves the window's start later. The filters search the whole window and matched counts every match. Where the account receives news an hour behind: a post from created_at, a headline from the later of created_at and carried_at. A headline names no outlet as its source: a trailing ' - Outlet', a 'via Outlet' credit and the wire's label are removed; a headline about an outlet, or about an index such as the Nikkei, can still mention one.

NameTypeReqDescription
categoriesstring–Comma-separated lanes, like release,auction or news,geo. Empty means all.
freshboolean–Set true to ask for the live view of this one call, for 5 credits, where the connected account otherwise receives it an hour behind. Accepted and free where the account is already live. No effect wit…
kindstring–headline or post. Empty means both.
limitinteger–Most items to return.
qstring–Filter word.
sincestring–Only items published at or after this date (2026-10-30) or ISO 8601 time; never earlier than the plan's history (plan_limit says so when it asks for more). Empty, or a value that is not a date, means…
topicsstring–Comma-separated topics, like equities or bonds,cb: what the item is about, the terminal's row code. Matches the topic or the secondary_topic. One of cb, geo, bonds, data, equities, chatter, desk, nar…

No output schema declared.

No examples provided.

get_fx_board ~132

FX momentum scorecard: seven major currencies scored against the basket. Newest reading plus past boards. Market data: numbers follow the connected account.

NameTypeReqDescription
freshboolean–Set true to ask for the live view of this one call, for 5 credits, where the connected account otherwise receives it an hour behind. Accepted and free where the account is already live. No effect wit…
limitinteger–Most rows to return.
sincestring–Oldest date to include, like 2026-06-01. How far back you can go depends on your plan.

No output schema declared.

No examples provided.

get_hormuz_transits ~98

Ships through the Strait of Hormuz per day, split tanker and cargo, measured by Helious from live ship tracking.

NameTypeReqDescription
daysinteger–How many days back.
freshboolean–Set true to ask for the live view of this one call, for 5 credits, where the connected account otherwise receives it an hour behind. Accepted and free where the account is already live. No effect wit…

No output schema declared.

No examples provided.

get_inflation ~235

Every US inflation measure on one axis: headline and core CPI and PCE, supercore, the trimmed means, the median, the sticky and flexible splits, the CPI components, and what markets expect next. Each one comes back with its year-over-year reading plus 1, 3 and 6-month annualised, so you never have to annualise anything yourself. Also says which parts of the basket are driving the headline rate. `measures` filters by key, `history` adds the monthly series. Published statistics, so it answers on every tier.

NameTypeReqDescription
freshboolean–Set true to ask for the live view of this one call, for 5 credits, where the connected account otherwise receives it an hour behind. Accepted and free where the account is already live. No effect wit…
historyboolean–Add the full monthly series per measure.
measuresstring–Comma-separated keys to return, such as core_cpi,core_pce. Omit for all of them.
windowinteger–Months of history to include when history is true.

No output schema declared.

No examples provided.

get_jobs ~263

Every US employment measure on one axis: total nonfarm payrolls split into private and government, the ten private sectors, federal, state and local government, ADP's own private count by sector, initial and continuing jobless claims, and JOLTS openings, hires, quits and layoffs including openings by sector. Each comes back with its monthly change plus 3, 6 and 12-month windows, in THOUSANDS of jobs. Also says which sectors drove the headline, and those parts sum to it exactly. Percentages such as the unemployment and quits rates ride in `standing`. `measures` filters by key, `history` adds the monthly series. Published statistics, so it answers on every tier.

NameTypeReqDescription
freshboolean–Set true to ask for the live view of this one call, for 5 credits, where the connected account otherwise receives it an hour behind. Accepted and free where the account is already live. No effect wit…
historyboolean–Add the full monthly series per measure.
measuresstring–Comma-separated keys to return, such as payrolls,edhealth,openings. Omit for all.
windowinteger–Months of history to include when history is true.

No output schema declared.

No examples provided.

get_market_context ~186

START HERE for any 'why is the market doing this' question. One call gives the whole cross-asset board (equities, the Treasury curve, FX, volatility, commodities), every scored economic release behind it, and the Helious desk's read on what is actually driving the session: whether it is event-driven, flow-driven or quiet, the evidence that read rests on, and the regime yields and stocks have actually been trading in. Use this before the individual board tools: it saves five calls, and it characterises the session rather than leaving you to guess a cause. Market data: numbers follow the connected account.

NameTypeReqDescription
freshboolean–Set true to ask for the live view of this one call, for 5 credits, where the connected account otherwise receives it an hour behind. Accepted and free where the account is already live. No effect wit…

No output schema declared.

No examples provided.

get_nasdaq100 ~179

The NASDAQ-100 ranked best to worst on the session: price, change and sector for every stock. Pass symbol to ask about ONE company instead, like AAPL or NVDA, and you get its price, its move on the session and where it ranks on the board today. Equities are market data: numbers follow the connected account.

NameTypeReqDescription
freshboolean–Set true to ask for the live view of this one call, for 5 credits, where the connected account otherwise receives it an hour behind. Accepted and free where the account is already live. No effect wit…
limitinteger–Most stocks to return.
symbolstring–One or more NASDAQ-100 tickers, comma separated, like AAPL or AAPL,MSFT. Empty returns the whole ranked board.

No output schema declared.

No examples provided.

get_rate_odds ~169

The odds of a Federal Reserve rate cut or hike at each remaining FOMC meeting, priced from fed funds futures. THIS IS THE TOOL for 'what are the odds of a cut in September', 'is the Fed cutting', 'what is priced in for the next meeting' or 'how many cuts this year'. Gives the probability per meeting, the implied effective rate after each one, and the total move priced across the whole path. Computed by Helious from settlement prices against the effective fed funds rate, not the target midpoint.

NameTypeReqDescription
freshboolean–Set true to ask for the live view of this one call, for 5 credits, where the connected account otherwise receives it an hour behind. Accepted and free where the account is already live. No effect wit…

No output schema declared.

No examples provided.

get_rate_path ~266

What the market is paying for US interest rates up to four years out. Two strips, kept apart because they are DIFFERENT RATES: `sr3` is sixteen quarterly 3-month SOFR futures grouped into the whites, reds, greens and blues a rates desk quotes, and `ff` is forty-eight monthly 30-day fed funds contracts. Every contract carries its implied rate now and the rate the SAME contract carried six and twelve months ago, so the gap is the market changing its mind rather than a different instrument. Rates are percent. These are traded prices and not forecasts. Do not compare the two lanes contract by contract: SOFR is secured and the fed funds effective rate is not, and an SR3 month spans the quarter between two IMM dates while a fed funds month is a calendar month.

NameTypeReqDescription
freshboolean–Set true to ask for the live view of this one call, for 5 credits, where the connected account otherwise receives it an hour behind. Accepted and free where the account is already live. No effect wit…
historyboolean–Add each contract's own daily settlement run.
lanestring–sr3 for the quarterly SOFR strip, ff for the monthly fed funds strip. Omit for both.

No output schema declared.

No examples provided.

get_rates_and_curve ~123

US Treasury yields, the 2s10s and other spreads, and the curve regime (bull or bear, steepener or flattener) with the time it flipped. Yields are market prices: current or an hour behind according to the connected account, and a note instead of numbers without one.

NameTypeReqDescription
freshboolean–Set true to ask for the live view of this one call, for 5 credits, where the connected account otherwise receives it an hour behind. Accepted and free where the account is already live. No effect wit…

No output schema declared.

No examples provided.

get_series ~137

One economic data series: the latest print, the forecast, the surprise in standard deviations, and the history. consensus_history carries the consensus record Helious holds for the release: the consensus, first actual, previous and revised prior at each print, inside the plan's history window.

NameTypeReqDescription
freshboolean–Set true to ask for the live view of this one call, for 5 credits, where the connected account otherwise receives it an hour behind. Accepted and free where the account is already live. No effect wit…
slugstring–Series slug from list_series, like cpi or nonfarm-payrolls.

No output schema declared.

No examples provided.

get_squawk_sessions ~101

Live events Helious transcribed in the last week (Fed pressers, briefings), one entry per event.

NameTypeReqDescription
freshboolean–Set true to ask for the live view of this one call, for 5 credits, where the connected account otherwise receives it an hour behind. Accepted and free where the account is already live. No effect wit…
hoursinteger–How many hours back, up to 168.

No output schema declared.

No examples provided.

get_treasury_curve ~109

The whole US Treasury curve in one call, 3M bill to 30Y bond with daily closes. Points are market prices: current or an hour behind according to the connected account, and a note instead of numbers without one.

NameTypeReqDescription
freshboolean–Set true to ask for the live view of this one call, for 5 credits, where the connected account otherwise receives it an hour behind. Accepted and free where the account is already live. No effect wit…

No output schema declared.

No examples provided.

get_treasury_issuance ~198

Monthly US Treasury borrowing: marketable debt sold, gross and net, split into bills, notes (TIPS and floating-rate notes included) and bonds, the cash balance the Treasury holds at the Fed, a quarterly rollup, and the refunding schedule ahead. Figures are billions of dollars. `measures` filters by key, `history` adds the monthly series. Published statistics, so it answers on every tier; the history depth follows your plan.

NameTypeReqDescription
freshboolean–Set true to ask for the live view of this one call, for 5 credits, where the connected account otherwise receives it an hour behind. Accepted and free where the account is already live. No effect wit…
historyboolean–Add the full monthly series per measure.
measuresstring–Comma-separated keys to return, such as marketable_net,tga. Omit for all of them.

No output schema declared.

No examples provided.

get_vol_board ~137

Implied volatility board: VIX and the other vol gauges with their one-year percentile. Newest reading plus past boards. Market data: numbers follow the connected account.

NameTypeReqDescription
freshboolean–Set true to ask for the live view of this one call, for 5 credits, where the connected account otherwise receives it an hour behind. Accepted and free where the account is already live. No effect wit…
limitinteger–Most rows to return.
sincestring–Oldest date to include, like 2026-06-01. How far back you can go depends on your plan.

No output schema declared.

No examples provided.

get_yield_closes ~184

Official 17:00 New York Treasury yield closes per session, as Helious recorded them. Before that ledger began, the official daily Treasury yields back to 2000 (record 'official') when since or before asks for them. Availability follows the connected account.

NameTypeReqDescription
beforestring–Newest date to include, like 2018-12-31, to page further back.
freshboolean–Set true to ask for the live view of this one call, for 5 credits, where the connected account otherwise receives it an hour behind. Accepted and free where the account is already live. No effect wit…
limitinteger–Most rows to return.
sincestring–Oldest date to include, like 2026-06-01. How far back you can go depends on your plan.

No output schema declared.

No examples provided.

list_series ~40

Every US economic data series Helious tracks (CPI, payrolls, GDP and so on) with its slug for get_series. Draws no credit.

Input schema present but exposes no named parameters.

No output schema declared.

No examples provided.

Install

How do I install the Helious market intelligence MCP server?

Helious market intelligence is a hosted endpoint at https://helious.io/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

remote · helious.io

# add to Claude Code
claude mcp add --transport http io-helious-market-intelligence 'https://helious.io/mcp'
Common questions

What is the Helious market intelligence MCP server?

Helious market intelligence is an MCP server listed in the public MCP registry as io.helious/market-intelligence. US Treasury auction tails, the live curve regime, scored macro releases, and why rates moved. This page covers its hosted endpoint (https://helious.io/mcp).

Is the Helious market intelligence MCP server safe to use?

Helious market intelligence scores 85 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

What tools does the Helious market intelligence MCP server expose?

Helious market intelligence exposes 26 tools: get_rates_and_curve, get_curve_history, get_fx_board, get_vol_board, get_inflation, and 21 more. Their descriptions and schemas cost roughly 4,914 tokens of context every time the server is loaded.

Does the Helious market intelligence MCP server require authentication?

No. We connected to Helious market intelligence without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

Is the Helious market intelligence MCP server still maintained?

Helious market intelligence is still listed as active in the MCP registry. We last reached this channel on 6 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

What did VerifyMCP test on the Helious market intelligence MCP server?

VerifyMCP ran 13 checks on Helious market intelligence, covering TLS certificate, Authorization, HTTPS, HSTS header and 9 more. Supply Chain Security and Provenance & Transparency do not apply to a hosted endpoint, so they were not tested. The score does not measure everything, and the scoring documentation lists what it leaves out.