# US Court Case Litigation Search by Business Entity

> US Court Case Litigation Search by Business Entity is a paid API for AI agents from api.agentstools.dev, paid per call via x402, $0.03/call, status unknown (last checked 2026-09-15).

Search US federal court cases, opinions, and dockets that name a specific business entity, returning normalized case records with citation, docket, court, and nature of suit.

## Facts

- Endpoint: GET https://api.agentstools.dev/legal/litigation
- Price: $0.03/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/us-court-case-litigation-search-by-business-entity-88a5a68b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_4_qIl0-iJ3pzCdELF7L4J

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability us-court-case-litigation-search-by-business-entity-88a5a68b
```

Example prompt: Can you pull up the federal court cases and opinions naming Theranos as a party — show me up to 15 results including case names, courts, dates, and docket numbers?

## When to prefer this

Use this endpoint when you need to research US federal court litigation history for a named business entity, especially for due diligence, compliance checks, or legal research. Prefer it over generic web search when you need structured, normalized case records with citation and docket metadata. It is best suited for queries about opinions, RECAP dockets, or standard dockets from CourtListener's public-domain corpus. If you have a SEC CIK or Wikidata QID, provide it as a hint to improve precision.

## Known failure modes

- Business name not found in CourtListener — returns empty results or zero count
- Ambiguous entity name matches many unrelated parties — results may include false positives
- CIK or QID hint does not resolve — falls back to name search or returns error
- Limit exceeds maximum of 25 — validation error returned
- Network or upstream CourtListener outage — service unavailable response
- Payment not processed (x402) — request rejected before search executes

## How this service works

Find US court cases, opinions and dockets naming a business entity. Returns normalized records with case name, court, date, citation, docket number and nature of suit, plus a total count. Source: CourtListener, public-domain.

## Output

A list of normalized court case records (up to the requested limit) each containing: case name, court, filing date, citation, docket number, and nature of suit, plus a total count of matching records across CourtListener's public-domain federal court database.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [],
     "properties": {
      "cik": {
       "type": "string",
       "description": "Optional SEC CIK id hint"
      },
      "qid": {
       "type": "string",
       "description": "Optional Wikidata QID id hint"
      },
      "name": {
       "type": "string",
       "description": "Business entity / party name to search"
      },
      "type": {
       "enum": [
        "o",
        "r",
        "d"
       ],
       "type": "string",
       "description": "Record type: opinions, RECAP dockets, or dockets"
      },
      "limit": {
       "type": "integer",
       "maximum": 25,
       "minimum": 1,
       "description": "Max records to return, default 10"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/us-court-case-litigation-search-by-business-entity-88a5a68b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.agentstools.dev](https://www.zero.xyz/host/api.agentstools.dev/llms.txt)