---
title: "Treasury auction tails sample (CSV)"
method: GET
path: "/api/seo/auction-tails.csv"
tags: ["Treasury auctions"]
---

# Treasury auction tails sample (CSV)

`GET /api/seo/auction-tails.csv`

## Request

- Base URL: `https://api.helious.io`
- URL: `https://api.helious.io/api/seo/auction-tails.csv`
- Auth: none declared

A capped sample: recent rows only, with a trailer line pointing to the API. Columns: auction_date, tenor, type, high_yield, when_issued_yield, tail_bps, bid_to_cover, indirect_pct, direct_pct, dealer_pct, verdict, issue. The full history comes through /v1/auctions, where depth follows your plan.

## Response `200`

CSV file

---

[API](https://skmtc.dev/helious/apis/helious-public-api.md) · [All operations](https://skmtc.dev/helious/apis/helious-public-api/llms.txt) · [OpenAPI document](https://skmtc.dev/helious/apis/helious-public-api/revisions/06bada17ad7a?raw)