openlabel check

Judge every claim in a piece against the drug’s label.

openlabel check <file> --label <drug or set id> [options]

<file> is plain text, Markdown or HTML. HTML is reduced to its visible text, one line per block element, with scripts and styles dropped.

Option	Description
--label <drug>	Required. A brand name such as dupixent, or a DailyMed set id
--label-version <n>	Judge against a past version of the label instead of the current one
--rules <file>	A YAML rule pack. Defaults to fda-core
--save	Also write the report to <file>.check.json for watch
--json	Print the report as JSON
--plain	Print text even at a terminal, instead of the interactive screen
--provider <name>	Which model provider to use. See Models and providers
--model <id>	Model id. Defaults to claude-opus-5-5 on Anthropic; required elsewhere

openlabel check examples/dupixent-sms.txt --label dupixent --rules examples/pulse-sms.yaml

Interactive screen

Run under Bun at a terminal and check opens a full-screen view built with OpenTUI: claims down the left as they are judged, the selected claim’s reason and every label sentence it cites on the right, rule findings and a live summary at the bottom. Arrow keys or j and k move between claims, and q quits and prints the plain report so it stays in your scrollback.

bun packages/cli/src/main.ts check examples/dupixent-email.html --label dupixent

Under Node, through npx, or when output goes to a file or another program, check prints the plain report with a live status line on stderr. --json and --plain always print text. Quitting before the check finishes exits 130.

JSON output

{
  "piece": "Dr. Patel, DUPIXENT clears eczema fast and gets patients back to the life they love. …",
  "label": { "setId": "595f437d-2729-40bb-9c62-c8ece1f82780", "version": 60, "title": "Dupixent (dupilumab)" },
  "claims": [
    {
      "id": "c1",
      "text": "DUPIXENT clears eczema fast",
      "kind": "efficacy",
      "start": 11,
      "end": 38,
      "verdict": "overstated",
      "evidence": ["14.1:2.2", "14.1:35.2", "14.1:76.1"],
      "evidenceText": [
        {
          "id": "14.1:2.2",
          "section": "14.1",
          "paragraph": 2,
          "kind": "prose",
          "text": "Disease severity was defined by an Investigator's Global Assessment (IGA) score ≥3 …"
        }
      ],
      "reason": "The excerpts describe 16-week trials measuring the proportion of subjects reaching scale thresholds such as EASI-75/EASI-90 or IGA scores, which supports only partial improvement in some patients, not that DUPIXENT clears eczema or does so quickly."
    }
  ],
  "findings": [
    { "rule": "isi.present", "severity": "violation", "message": "No Important Safety Information on the piece." }
  ],
  "exitCode": 2
}

This is examples/dupixent-sms.txt, trimmed to one claim. start and end are character offsets into the piece, so an editor can highlight each claim. Exit codes are listed in Verdicts and exit codes.