---
title: "Run a fresh investigation (~60 s)"
method: POST
path: "/explain"
tags: ["Decide"]
---

# Run a fresh investigation (~60 s)

`POST /explain`

## Request

- Base URL: `https://coingraph.ai/api/v1`
- URL: `https://coingraph.ai/api/v1/explain`
- Auth: none declared

Gathers evidence, makes live onchain lookups and writes a new brief. **Premium tier:** 10 free calls a day, then 5 tADA per call via x402 on Cardano preprod (402 Payment Required → pay → retry with PAYMENT-SIGNATURE); design partners send an API key instead.

## Request body

- object
  - `token` string, required
  - `hours` number

## Response `200`

Brief

- object
  - `object` 'brief', required
  - `id` string, nullable
  - `as_of` string, date-time, required
  - `data` Brief, required
    - `headline` string
    - `direction` string
    - `severity` integer
    - `confidence` number
    - `summary` string
    - `what_happened` unknown[]
      - unknown
    - `likely_causes` unknown[]
      - unknown
    - `onchain` unknown[]
      - unknown
    - `market_context` unknown[]
      - unknown
    - `watch_next` unknown[]
      - unknown
    - `caveats` unknown[]
      - unknown
    - `evidence` unknown[]
      - unknown
    - `verify_url` string
  - `sources` Source[], required
    - `provider` string
    - `endpoint` string
    - `as_of` string, date-time, nullable

## Other responses

- `400`: Error
- `402`: Error
- `429`: Error
- `502`: Error

---

[API](https://skmtc.dev/coingraph/apis/coingraph-api.md) · [All operations](https://skmtc.dev/coingraph/apis/coingraph-api/llms.txt) · [OpenAPI document](https://skmtc.dev/coingraph/apis/coingraph-api/revisions/55d33f7ec7a8?raw)