Hippoagent Validate Claim

Before asserting any verifiable factual claim (year/number/attribution/citation/date), call `hippo_validate_claim(claim)` to check it against persistent memory. Triggers when about to say things like "X was born in YEAR", "Y won the Nobel in YEAR", "Z released VERSION in MONTH", "W said EXACT_QUOTE", "this library/paper/repo is from ORG", or any other claim containing a Capitalized name + a specific year/number/version/org. The tool returns verdict ∈ {supported, contradicted, unknown} + an advice string in Italian (e.g. "in memoria 1987 (fact f_id), NON 2014 — controlla prima di affermare"). If verdict=contradicted, STOP and re-read the evidence_facts; do NOT assert the claim verbatim. If verdict=unknown, hedge ("non ricordo con certezza", "credo ma verifica"). If verdict=supported, proceed. Zero LLM cost (deterministic, sub-100ms). Anti-confabulation gate — born from live confabulations 2026-05-14 (Tonegawa Nobel 1987→2014, Anthropic Skills Oct 2025→Oct 2026, LightRAG HKUDS→HKUST).

mkdir -p ~/.claude/skills/hippoagent-validate-claim
curl -L https://claudskills.com/skills/hippoagent-validate-claim/SKILL.md \
  -o ~/.claude/skills/hippoagent-validate-claim/SKILL.md

@misc{hippoagent-validate-claim-2026,
  author    = {aureliocpr-ctrl},
  title     = {Hippoagent Validate Claim [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/hippoagent-validate-claim/}
}