8 Services from goodsong.dev

Verifies whether a legal case citation exists in CourtListener and whether the provided case name matches the canonical record, catching fabricated citations.

Verifies whether a citation exists, checks if it has been retracted, and confirms that title/authors/year/journal metadata match the canonical academic record via Crossref and OpenAlex.

Verifies whether an FDA drug record (approval, NDC listing, or recall) actually exists and whether a given name matches the canonical record, checked against openFDA.

Verifies an SEC filing by checking whether a given CIK and accession number exist in EDGAR, and whether the claimed form type and filing date match the official record.

Verifies a URL by checking if it resolves, its final HTTP status and redirect chain, whether it is archived on the Wayback Machine, and optionally whether expected text appears on the live page.

Checks whether an npm, PyPI, or crates.io package exists, is deprecated/yanked, and has known security vulnerabilities via OSV.dev advisories.

Verifies that a GitHub repository exists and checks whether it is archived or disabled, catching stale or broken repo dependencies.

Verifies an x402 seller endpoint by checking it responds with a valid 402 challenge, validates its schema consistency, and screens its payout address against sanctions oracles