Grounded-summary workflow — Free AI Resources

Grounded-summary workflow example

This deterministic example contains a synthetic source, a JSON Schema, five cases, and a validator.

Run:

node validate.mjs

Expected:

ACCEPT valid-date
ACCEPT valid-owner
REJECT missing-quote
REJECT unsupported-number
REJECT not-reviewed
PASS 5 cases: 2 accepted, 3 rejected

Verified on 2026-10-27 with Node v26.8.1.

The validator checks required structure, exact source substrings, and a human-review flag. It does not prove completeness, truth outside the supplied source, fairness, or writing quality.

Included source files

README.md MARKDOWN
validate.mjs JAVASCRIPT
cases.json JSON
schema.json JSON
source.txt TEXT

validate.mjs

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import { readFile } from 'node:fs/promises';

const source = await readFile(new URL('./source.txt', import.meta.url), 'utf8');
const cases = JSON.parse(await readFile(new URL('./cases.json', import.meta.url), 'utf8'));

export function validate(candidate) {
  if (!candidate || typeof candidate.summary !== 'string' || !candidate.summary.trim()) return false;
  if (typeof candidate.quote !== 'string' || !candidate.quote || !source.includes(candidate.quote)) return false;
  if (!Array.isArray(candidate.claims) || candidate.claims.some(claim => typeof claim !== 'string' || !source.includes(claim))) return false;
  return candidate.reviewed === true;
}

let accepted = 0;
let rejected = 0;
for (const item of cases) {
  const actual = validate(item.candidate);
  if (actual !== item.expected) throw new Error(item.name + ': expected ' + item.expected + ', got ' + actual);
  actual ? accepted++ : rejected++;
  console.log((actual ? 'ACCEPT ' : 'REJECT ') + item.name);
}
console.log('PASS ' + cases.length + ' cases: ' + accepted + ' accepted, ' + rejected + ' rejected');

cases.json

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[
  {"name":"valid-date","candidate":{"summary":"Alder closes on 18 November.","quote":"Project Alder closes on 18 November.","claims":["18 November"],"reviewed":true},"expected":true},
  {"name":"valid-owner","candidate":{"summary":"Team Blue owns final review.","quote":"Team Blue owns the final review.","claims":["Team Blue"],"reviewed":true},"expected":true},
  {"name":"missing-quote","candidate":{"summary":"Alder closes in November.","quote":"","claims":["November"],"reviewed":true},"expected":false},
  {"name":"unsupported-number","candidate":{"summary":"Alder closes on 12 November.","quote":"Project Alder closes on 18 November.","claims":["12 November"],"reviewed":true},"expected":false},
  {"name":"not-reviewed","candidate":{"summary":"Alder requires approval.","quote":"The release note must be approved before publication.","claims":["approved before publication"],"reviewed":false},"expected":false}
]

schema.json

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{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "type": "object",
  "required": ["summary", "quote", "claims", "reviewed"],
  "properties": {
    "summary": { "type": "string", "minLength": 1 },
    "quote": { "type": "string", "minLength": 1 },
    "claims": { "type": "array", "items": { "type": "string", "minLength": 1 } },
    "reviewed": { "const": true }
  },
  "additionalProperties": false
}

source.txt

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Project Alder closes on 18 November. Team Blue owns the final review. The release note must be approved before publication.

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