---
title: "What did Coil actually publish on a given date? Immutable point-in-time scores"
method: GET
path: "/api/board/asof"
tags: ["Market Data"]
---

# What did Coil actually publish on a given date? Immutable point-in-time scores

`GET /api/board/asof`

## Request

- Base URL: `https://coil.trade`
- URL: `https://coil.trade/api/board/asof`
- Auth: one of:
  - API key in header `X-PAYMENT`
  - HTTP payment

NO WALLET? This endpoint is paid, but a sample of the same board is FREE two other ways, with no payment, account, or key: the MCP server at https://mcp.coil.trade/mcp (`claude mcp add --transport http coil https://mcp.coil.trade/mcp`, a sample of the board: top 3 per book, headline fields, one market day delayed), and https://coil.trade/api/board/agent?preview=1 (identical schema, previous day, top-3 per book). Humans/agents without crypto can subscribe at https://coil.trade/scanner.

Immutable archive: one new date per session, never revised.

## Query parameters

- `date` string, date

## Headers

- `PAYMENT-SIGNATURE` string
- `X-PAYMENT` string
- `Authorization` string

## Response `200`

As-published per-name scores (opportunity percentile, entry quality, hold strength) for an archived date. Served verbatim from the append-only publish log — lookahead-bias-clean by construction. Omit ?date= for the list of archived dates.

- object

## Other responses

- `402`: Payment Required — x402 v2 payment requirements in the JSON body and the PAYMENT-REQUIRED header

---

[API](https://skmtc.dev/coil/apis/coil-scanner-agent-api.md) · [All operations](https://skmtc.dev/coil/apis/coil-scanner-agent-api/llms.txt) · [OpenAPI document](https://skmtc.dev/coil/apis/coil-scanner-agent-api/revisions/e087ee004cfb?raw)