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Invoket Chemical Classification — EU Annex VI CLP Harmonised Classification Lookup
x402
Invoket Chemical Classification — EU Annex VI CLP Harmonised Classification Lookup is a paid API for AI agents from api.invoket.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Looks up the EU CLP Regulation Annex VI harmonised hazard classification for a chemical identified by CAS number, EC number, or exact name, as of a specified date.
Price / call$0.01
Success—
StatusUnknown
How this service works
The checks your agent runs before it acts: verify a bank account, a phone number, a law in force, the weather or a vehicle — computed from official sources, with provenance in every response. You only pay for answers.
Output
Returns the EU CLP Annex VI harmonised classification status for the queried substance, including hazard categories, hazard statements, classification applicability at the requested date, and provenance information. If the substance is not listed, returns a 'not_harmonised' verdict with an explicit note that absence does not imply safety.
Example use cases
Pre-shipment chemical compliance check
“Before we ship this batch, check the EU CLP Annex VI harmonised classification for CAS 7647-01-0 as of today — I need the official hazard categories and provenance so we can confirm our labels are correct.”
Regulatory date-specific classification audit
“I need to know what the EU harmonised classification was for CAS 1309-37-1 on 2023-01-01 — we're auditing whether our labels were compliant at that point in time.”
New product formulation safety screening
“We're formulating a new product and need to check if the substance with CAS 872-50-4 has a harmonised hazard classification under EU CLP Annex VI right now, including full provenance details.”
Technical details
Endpoint
GEThttps://api.invoket.com/label/chem/classifyWhen to prefer
Use this endpoint when you need an authoritative, date-aware EU CLP Annex VI harmonised hazard classification for a chemical, with full provenance — especially for regulatory compliance, product labelling, safety data sheet generation, or pre-action checks in an AI agent workflow. Prefer it over general chemical databases when official EU regulatory status with a specific effective date is required.
Side effects
- Invalid or missing CAS checksum returns 400
- Multiple identifier keys provided simultaneously returns 400
- Valid CAS not listed in Annex VI returns 200 with 'not_harmonised' status (still billed)
- Malformed date format returns 400
- Providing zero identifier keys returns 400
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| atrequired | string | Optional date (YYYY-MM-DD, default today) the served classification must be in force at - useful around an ATP applicability switch |
| casrequired | string | CAS number, checksum-validated. Provide exactly ONE key among: cas, ec (EC number, checksum-validated), name (exact Annex VI chemical name). Zero or several keys = 400; bad checksum = 400; valid but not listed = 200 not_harmonised (billed - absence does not mean not hazardous, the verdict says so explicitly) |
Output
Schema · Response
{
"type": "object"
}Tags
x402
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