What changed since your last read
What changed since your last read: one page of PreReason's change events after a cursor. A briefing's state label, a tracked release, and, for the companies you name (?companies=, at most 200), newer figures, a situation turning on or filed news (?kinds= narrows it). Each event says what changed, when it happened, when PreReason knew it and where to fetch it, never a value. With no cursor it answers the last 24 hours; each answer's next_cursor is where the next read starts.
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://api.prereason.com/api/events
| Category | Company and compliance |
|---|---|
| Provider host | api.prereason.com |
| Networks | eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| Payment schemes | exact |
| Self-reported calls, 30 days | 4 from 3 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-10 | valid payment request | 402 | $0.01 | 1624 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"types": "state.changed,release.published"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"companies": {
"description": "Company addresses, comma separated, at most 200. A company's events reach only a read that names it.",
"type": "string"
},
"cursor": {
"description": "The next_cursor of your previous read. Left out, the read starts 24 hours back.",
"pattern": "^[0-9]{1,18}$",
"type": "string"
},
"kinds": {
"description": "Company news kinds, comma separated, from earnings-release, material-event, leadership-change, ownership-report. Left out, every kind but ownership-report, which comes only when named.",
"type": "string"
},
"limit": {
"description": "Events a page holds, 1 to 100. Default 50.",
"pattern": "^[0-9]{1,3}$",
"type": "string"
},
"types": {
"description": "Event types, comma separated, from state.changed, release.published, company.figures_updated, company.situation_changed, company.news. Every type when left out.",
"type": "string"
}
},
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}