Rates and curve

Treasury closing yields per session

The 17:00 New York closes as Helious recorded them, one row per session. Part of the Treasury complex: served on Starter 60 minutes behind and live on Pro and Ultimate; keyless and free keys get the upgrade steps instead of numbers. History depth follows your plan.

get/v1/yields

Request

  • Base URL: https://api.helious.io
  • URL: https://api.helious.io/v1/yields
  • Auth: one of:
    • none
    • HTTP bearer

Query parameters

sincestring
limitinteger

Response

summary + source + data + meta envelope

summarystring

The answer as a sentence, with the numbers in it. Identical to the sentence the matching MCP tool returns.

dataobject

The dataset itself.

metaobject

When it was true, and what your plan allows.

plan_limitobject

Present only when your plan moved the window. Says this is a plan limit rather than missing data, what Helious holds behind it, and the exact step to relay to the person you work for.

Example response

{
  "source": {
    "name": "Helious",
    "cite_as": "Helious, https://helious.io/auctions"
  }
}

Changes

No recorded changes to this operation across all 1 revision of this API.