1{
2  "$schema": "https://json-schema.org/draft/2020-12/schema",
3  "title": "Claim",
4  "description": "An atomic claim extracted from the report. claim_id = sha256(section_id + sentence_text)[:16].",
5  "type": "object",
6  "required": ["claim_id", "section_id", "text", "claim_type", "support_status"],
7  "properties": {
8    "claim_id": {
9      "type": "string",
10      "pattern": "^[0-9a-f]{16}$",
11      "description": "sha256(section_id + normalized_text)[:16]"
12    },
13    "section_id": {
14      "type": "string",
15      "description": "Section identifier (e.g. executive_summary, finding_1, synthesis)"
16    },
17    "text": {
18      "type": "string",
19      "description": "The atomic claim sentence"
20    },
21    "claim_type": {
22      "type": "string",
23      "enum": ["factual", "synthesis", "recommendation", "speculation"],
24      "description": "Only factual claims hard-fail on lack of support"
25    },
26    "cited_source_ids": {
27      "type": "array",
28      "items": { "type": "string", "pattern": "^[0-9a-f]{16}$" },
29      "default": [],
30      "description": "Stable source_ids cited for this claim"
31    },
32    "evidence_ids": {
33      "type": "array",
34      "items": { "type": "string", "pattern": "^[0-9a-f]{16}$" },
35      "default": [],
36      "description": "Evidence rows that support this claim"
37    },
38    "support_status": {
39      "type": "string",
40      "enum": ["unverified", "supported", "partial", "unsupported", "needs_review"],
41      "description": "Set by verify_claim_support.py (PR5)"
42    },
43    "extracted_at": {
44      "type": "string",
45      "format": "date-time"
46    }
47  },
48  "additionalProperties": false
49}
50