---
title: "Recent Treasury auction results + demand analytics"
method: GET
path: "/api/v2/fixed-income/treasury/auctions/results"
tags: ["Fixed Income"]
---

# Recent Treasury auction results + demand analytics

`GET /api/v2/fixed-income/treasury/auctions/results`

The most recent completed US Treasury auctions with demand analytics: high / median / low yield, high-minus-median spread (bps), bid-to-cover, and bidder-group allotment shares (primary dealer, direct, indirect, SOMA as a percent of accepted). Optional security_type filter (Bill, Note, Bond). Source: US Treasury Fiscal Data (CC0).

## Query parameters

- `security_type` string, nullable — Filter by type: Bill, Note, Bond.

## Response `200`

Recent completed auctions with demand metrics, newest first.

- EnvelopeAuctionDemandData
  - `data` AuctionDemandData, required — Recent completed Treasury auctions with demand analytics (newest first).
    - `count` integer, required
    - `results` AuctionDemandRow[], required
      - `cusip` string, nullable
      - `security_type` string, nullable
      - `security_term` string, nullable
      - `auction_date` string, nullable
      - `high_yield` number, nullable — Stop-out (highest accepted) yield, percent.
      - `median_yield` number, nullable
      - `low_yield` number, nullable
      - `high_minus_median_bps` number, nullable — High minus median yield, basis points (demand-strength proxy).
      - `bid_to_cover` number, nullable — Total tendered / total accepted.
      - `total_accepted` number, nullable
      - `indirect_pct` number, nullable — Indirect bidder share of total accepted, percent.
      - `direct_pct` number, nullable — Direct bidder share of total accepted, percent.
      - `primary_dealer_pct` number, nullable — Primary dealer share of total accepted, percent.
      - `soma_pct` number, nullable — SOMA (Fed add-on) share of total accepted, percent.
  - `meta` SugraMeta, required — Metadata attached to every /api/v1/* response envelope.
    - `endpoint` string, required — Requested endpoint path.
    - `data_time` string, required — ISO 8601 UTC timestamp of the source data, not of the request.
    - `response_time` string, required — ISO 8601 UTC timestamp when this response was produced.
    - `provider` string, required — API name and version.
    - `source` string, nullable — Identifier of the primary upstream source used for this response.
    - `attribution` string, nullable — Human-readable attribution mandated by an upstream source (e.g. a securities regulator or self-regulatory organization). Present only on responses whose source requires the owner and source to be clearly identified. Do not remove or alter it when using the response.
    - `fallback_used` boolean, nullable — True when the primary source failed and a fallback produced the data.
    - `fallback_chain` string[], nullable — Ordered list of sources attempted, in the order they were tried.
    - `cached` boolean, nullable — True when this response was served from the internal cache.
    - `stale` boolean, nullable — True when the cached response was returned after the upstream rate-limited or errored. Clients can use this to detect degraded data.

## Other responses

- `401` — Missing or invalid `x-api-key` header. JSON body with a stable `code` distinguishing `missing_api_key` (no header sent) from `invalid_api_key` (header sent, key not accepted); any other 401 source carries the generic `unauthorized` with its detail as `reason`. Plus `hint`. `plan` is always null on 401 - an unauthenticated request has no plan; quota exhaustion is 429, not 401.
- `422` — Validation Error
- `429` — Daily rate limit exceeded. Check `X-RateLimit-Reset` for the next window.
- `503` — Upstream source is temporarily unavailable. Retry after a short delay.

---

[API](https://skmtc.net/sugra/apis/sugra-api.md) · [All operations](https://skmtc.net/sugra/apis/sugra-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/sugra/sugra-api/revisions/a83e6a561bf2/schema)