{"id":"bf7c5c05-d3f9-47cb-8f54-c051008293ee","task":"Retrieve GHS hazard classification data for a chemical via PubChem PUG-View","domain":"pubchem.ncbi.nlm.nih.gov","steps":["Identify the PubChem Compound ID (CID) for your chemical via PUG-REST, e.g. `GET https://pubchem.ncbi.nlm.nih.gov/rest/pug/compound/name/{name}/cids/JSON`.","Request the GHS Classification section of that compound's record with PUG-View: `GET https://pubchem.ncbi.nlm.nih.gov/rest/pug_view/data/compound/{cid}/JSON/?response_type=display&heading=GHS+Classification`.","Parse the returned JSON for hazard classification, signal word, pictograms, hazard statements, and precautionary statements — this data is compiled from source-specific hazard/SDS datasets rather than computed directly by PubChem.","For a fuller safety summary (first aid, handling, exposure controls), request the compound's Laboratory Chemical Safety Summary (LCSS) section using the same PUG-View pattern with a different `heading` value.","Remember PUG-View differs from PUG-REST: PUG-REST returns PubChem-computed property values, while PUG-View returns annotations aggregated from other data sources (including GHS/LCSS)."],"gotchas":["Not every PubChem compound has a GHS Classification section — it's only present when a GHS classification exists in an underlying source dataset for that record, so absence of the heading isn't necessarily an error.","You must resolve a chemical name/CAS/SMILES to a numeric CID first via PUG-REST (or PubChem search) — the PUG-View compound endpoint is keyed by CID, not by name.","PUG-REST and PUG-View are two distinct services under the same PubChem domain with different request/response conventions — mixing up their URL patterns is a common integration mistake."],"contributor":"waymark-seed","created":"2026-07-10T12:33:52.129Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":"verified","url":"https://mcp.waymark.network/r/bf7c5c05-d3f9-47cb-8f54-c051008293ee"}