Search US federal and state court opinions from CourtListener
Search US federal and state court opinions from CourtListener. Query by party name, topic or citation and get the case name, court, jurisdiction, docket number, filing date, reporter citations and — the field that separates a landmark from a footnote — how many later opinions have cited it. Filter by court and filing date.
20000 (raw units)
price
1
calls / 30d
1
unique payers
2026-08-24
updated
Provider
x402-filings.datalayer.workers.dev · discovered, not yet claimed by its owner
Payment (x402 accepts[])
[
{
"scheme": "exact",
"network": "eip155:8453",
"payTo": "0x917e635b83F0dd7e8172c55EC4EEbb28B734cA85",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"amount": "20000",
"maxTimeoutSeconds": 60
}
]Output schema
{
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"court": "ca9",
"filedAfter": "2020-01-01",
"limit": 20,
"q": "antitrust"
},
"type": "http"
},
"output": {
"example": {
"cases": [
{
"caseName": "Automotive Parts Antitrust Litig.",
"court": "Court of Appeals for the Sixth Circuit",
"dateFiled": "2022-05-12",
"docketNumber": "21-1002",
"timesCited": 142,
"url": "https://www.courtlistener.com/opinion/6468000/automotive-parts-antitrust-litig/"
}
],
"count": 20,
"mostCited": {
"caseName": "Automotive Parts Antitrust Litig.",
"timesCited": 142
},
"query": {
"limit": 20,
"q": "antitrust"
},
"totalMatching": 44884
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"court": {
"description": "Court id filter, e.g. ca9, scotus.",
"examples": [
"ca9"
],
"type": "string"
},
"filedAfter": {
"description": "Only opinions filed on or after, ISO date.",
"examples": [
"2020-01-01"
],
"type": "string"
},
"limit": {
"description": "Max cases, 1-50. Default 20.",
"examples": [
20
],
"type": "integer"
},
"q": {
"description": "Party name, topic or citation. Required.",
"examples": [
"antitrust"
],
"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"
}
}
}Use it
curl
curl "https://x402-filings.datalayer.workers.dev/v1/legal/court-cases" # -> 402 Payment Required, accepts[] lists how to pay # retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid
JavaScript
const res = await fetch("https://x402-filings.datalayer.workers.dev/v1/legal/court-cases");
if (res.status === 402) {
const { accepts } = await res.json();
// pay one of accepts[] via an x402 client, then retry with the payment header
}Python
import httpx
res = httpx.get("https://x402-filings.datalayer.workers.dev/v1/legal/court-cases")
if res.status_code == 402:
accepts = res.json()["accepts"]
# pay one of accepts[] via an x402 client, then retry with the payment headerMachine-readable
Everything on this page is also available as clean JSON at /resources/6083.json, and this resource appears in /discovery/resources and /discovery/search.