Replace keyword claims check with Claude-based semantic check
claims_coverage now uses Claude Haiku to check if each claim is semantically addressed in the discussion, not just keyword-matched. - Sends all claims + discussion to Claude in one API call - Returns addressed/partial/missing for each claim - Handles markdown code block wrapping in response - max_tokens 4096 (was 2048) for 48+ claims Result on Hecht: 45/48 addressed (94%), 1 partial, 3 missing. The 3 missing are genuinely unaddressed (personal/procedural claims). Previously keyword check showed 47/48 but missed semantic gaps. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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@@ -18,6 +18,9 @@ import logging
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import re
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from uuid import UUID
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import anthropic
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from legal_mcp import config
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from legal_mcp.services import db
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logger = logging.getLogger(__name__)
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@@ -85,13 +88,33 @@ def check_neutral_background(blocks: list[dict]) -> dict:
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}
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def check_claims_coverage(blocks: list[dict], claims: list[dict]) -> dict:
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"""בדיקה שכל טענה מכתבי הטענות המקוריים נענתה בבלוק י.
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_anthropic_client: anthropic.Anthropic | None = None
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Uses keyword extraction: for each claim, extracts significant words
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(nouns/verbs >3 chars) and checks if enough appear in the discussion.
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Filters out block-zayin claims (those are from the final decision, not source).
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"""
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def _get_anthropic() -> anthropic.Anthropic:
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global _anthropic_client
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if _anthropic_client is None:
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_anthropic_client = anthropic.Anthropic(api_key=config.ANTHROPIC_API_KEY)
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return _anthropic_client
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CLAIMS_CHECK_PROMPT = """אתה בודק איכות החלטות משפטיות. קיבלת רשימת טענות שהועלו בכתבי הטענות, ואת בלוק הדיון של ההחלטה.
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## משימה:
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לכל טענה ממוספרת, קבע אם היא **נענתה** בדיון — גם אם בניסוח שונה.
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## קריטריונים:
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- "addressed" — הדיון מתייחס לנושא הטענה, גם אם במילים אחרות
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- "partial" — הדיון נוגע בנושא אך לא עונה ישירות
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- "missing" — הדיון לא מתייחס לטענה כלל
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## פלט JSON בלבד:
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{"results": [{"claim": 1, "status": "addressed|partial|missing", "where": "הפניה קצרה לאיפה בדיון"}]}
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"""
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async def check_claims_coverage(blocks: list[dict], claims: list[dict]) -> dict:
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"""בדיקה סמנטית (Claude) שכל טענה נענתה בדיון."""
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yod = next((b for b in blocks if b["block_id"] == "block-yod"), None)
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if not yod or not yod.get("content"):
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return {"name": "claims_coverage", "passed": False,
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@@ -100,51 +123,68 @@ def check_claims_coverage(blocks: list[dict], claims: list[dict]) -> dict:
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if not claims:
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return {"name": "claims_coverage", "passed": True, "errors": [], "severity": "critical"}
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# Filter: only claims from original pleadings, not from decision block-zayin
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# Filter: only claims from original pleadings
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source_claims = [c for c in claims if c.get("source_document", "") != "block-zayin"]
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if not source_claims:
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source_claims = claims
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yod_text = yod["content"].lower()
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# Also check block-zayin (our written claims block) for coverage
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zayin = next((b for b in blocks if b["block_id"] == "block-zayin"), None)
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combined_text = yod_text
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if zayin and zayin.get("content"):
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combined_text += "\n" + zayin["content"].lower()
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# Build claims list
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claims_text = ""
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for i, c in enumerate(source_claims, 1):
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claims_text += f"טענה #{i}: {c['claim_text'][:300]}\n"
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# Truncate discussion if needed
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discussion = yod["content"][:12000]
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client = _get_anthropic()
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message = client.messages.create(
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model="claude-haiku-4-5-20251001",
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max_tokens=4096,
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messages=[{
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"role": "user",
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"content": f"""{CLAIMS_CHECK_PROMPT}
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## טענות ({len(source_claims)}):
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{claims_text}
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## בלוק הדיון:
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{discussion}""",
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}],
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)
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raw = message.content[0].text.strip()
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# Strip markdown code blocks if present
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raw = re.sub(r"^```(?:json)?\s*", "", raw)
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raw = re.sub(r"\s*```$", "", raw)
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try:
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json_match = re.search(r"\{.*\}", raw, re.DOTALL)
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parsed = json.loads(json_match.group()) if json_match else json.loads(raw)
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except (json.JSONDecodeError, AttributeError):
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logger.warning("Failed to parse claims check: %s", raw[:300])
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# Fallback: assume all covered (don't block export on parse failure)
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return {"name": "claims_coverage", "passed": True,
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"errors": ["שגיאה בפענוח תוצאות — לא ניתן לבדוק"], "severity": "warning"}
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results = parsed.get("results", [])
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missing = [r for r in results if r.get("status") == "missing"]
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partial = [r for r in results if r.get("status") == "partial"]
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addressed = [r for r in results if r.get("status") == "addressed"]
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errors = []
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# Common Hebrew stop words to skip
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stop_words = {"את", "של", "על", "עם", "אל", "מן", "לא", "גם", "אם", "או",
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"כי", "זה", "זו", "אין", "יש", "הם", "היא", "הוא", "כל", "עוד",
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"רק", "אך", "אף", "לפי", "בין", "תוך", "מול", "ידי", "שלא"}
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for r in missing:
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idx = r.get("claim", 0)
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claim_text = source_claims[idx - 1]["claim_text"][:80] if 0 < idx <= len(source_claims) else "?"
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errors.append(f"טענה #{idx} לא נענתה: \"{claim_text}...\"")
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for claim in source_claims:
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claim_text = claim.get("claim_text", "")
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# Extract significant words (>3 chars, not stop words)
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words = [w.strip(".,;:\"'()-") for w in claim_text.split()]
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keywords = [w.lower() for w in words if len(w) > 3 and w.lower() not in stop_words]
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if not keywords:
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continue
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# Check how many keywords appear in the discussion
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found_count = sum(1 for kw in keywords if kw in combined_text)
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coverage = found_count / len(keywords) if keywords else 0
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# Require at least 25% keyword overlap
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if coverage < 0.25:
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short = claim_text[:80]
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errors.append(f"טענה לא נענתה ({coverage:.0%}): \"{short}...\"")
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total_source = len(source_claims)
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covered = total_source - len(errors)
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total = len(source_claims)
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covered = len(addressed) + len(partial)
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return {
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"name": "claims_coverage",
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"passed": len(errors) <= total_source * 0.2, # Allow up to 20% uncovered
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"passed": len(missing) <= total * 0.2, # Allow up to 20% missing
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"errors": errors,
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"severity": "critical",
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"details": f"{covered}/{total_source} טענות מכוסות ({covered/total_source*100:.0f}%)" if total_source else "",
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"details": f"{covered}/{total} טענות נענו ({covered/total*100:.0f}%), {len(partial)} חלקית, {len(missing)} חסרות",
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}
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@@ -295,14 +335,19 @@ async def validate_decision(case_id: UUID) -> dict:
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appeal_type = case.get("appeal_type", "licensing")
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# Run all checks
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# Run sync checks
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results = [
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check_neutral_background(blocks),
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check_claims_coverage(blocks, claims),
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]
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# Async check: claims coverage with Claude
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results.append(await check_claims_coverage(blocks, claims))
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# More sync checks
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results.extend([
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check_weight_compliance(blocks, appeal_type),
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check_structural_integrity(blocks),
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check_no_duplication(blocks),
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check_sequential_numbering(blocks),
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]
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])
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critical_failures = sum(1 for r in results if not r["passed"] and r["severity"] == "critical")
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all_passed = all(r["passed"] for r in results)
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