SERVICE / DETAILother

US Court Opinions and Citations

GET x402-filings.datalayer.workers.dev/v1/legal/court-cases

OPEN SERVICE ↗
SONAR SCORE0.712
LIVE PRICE0.020000
BAZAAR LIVEcompatible
CDP INDEXEDno
DECISION EVIDENCE

Why an agent can trust this route.

113 observations in the last 24h
HANDSHAKE SUCCESS98.2%402 challenge reachable
PAID DELIVERY0.0%settlement observed
P90 LATENCY1182msrecent response window
PRICE DRIFT0.0%advertised vs observed

Sonar evidence is advisory. Paid delivery is shown as verified only when paid probes are available; otherwise route estimates use the unpaid handshake as a clearly labeled proxy.

SONAR PROBE HISTORY / 30D

Observed outcomes

JSON ↗
LIVE ENDPOINT METADATA

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.

Resource: x402-filings.datalayer.workers.dev/v1/legal/court-cases

Network: eip155:8453 · Asset: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 · Pay to: 0x917e635b83F0dd7e8172c55EC4EEbb28B734cA85

Payment methods: — · Last validation: 2026-09-14 12:39:57.141+00

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              "antitrust"
            ],
            "description": "Party name, topic or citation. Required."
          },
          "court": {
            "type": "string",
            "examples": [
              "ca9"
            ],
            "description": "Court id filter, e.g. ca9, scotus."
          },
          "limit": {
            "type": "integer",
            "examples": [
              20
            ],
            "description": "Max cases, 1-50. Default 20."
          },
          "filedAfter": {
            "type": "string",
            "examples": [
              "2020-01-01"
            ],
            "description": "Only opinions filed on or after, ISO date."
          }
        }
      }
    },
    "additionalProperties": false
  },
  "output": {
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METADATA PROVENANCE

Source catalog records are retained separately from live endpoint observations. Sonar score, uptime, and latency are advisory metrics. CDP indexing is not inferred from validation.