---
title: "Historical market-state reconstruction"
method: GET
path: "/v5/historical"
tags: ["Market State"]
---

# Historical market-state reconstruction

`GET /v5/historical`

## Request

- Base URL: `https://headlessoracle.com`
- URL: `https://headlessoracle.com/v5/historical`
- Auth: none declared

Reconstructs market status at a past timestamp from schedule data. Public, unsigned. Includes DST proximity notes. Not a signed attestation.

## Query parameters

- `mic` string, required
- `at` string, date-time, required

## Response `200`

Reconstructed status

- object
  - `mic` string
  - `queried_at` string
  - `computed_status` 'OPEN' | 'CLOSED' | 'HALTED' | 'UNKNOWN': UNKNOWN MUST be treated as CLOSED. Halt all execution.
  - `source` string
  - `reasoning` object
  - `dst_note` string, nullable
  - `disclaimer` string

## Other responses

- `400`: Missing or invalid parameters

---

[API](https://skmtc.dev/headlessoracle/apis/headless-oracle.md) · [All operations](https://skmtc.dev/headlessoracle/apis/headless-oracle/llms.txt) · [OpenAPI document](https://skmtc.dev/headlessoracle/apis/headless-oracle/revisions/4e82fe332f29?raw)