Substance of Concern open MCP database
We built and opened up the whatt.io Substances of Concern (SoC) Intelligence Database (https://soc.product-passports.eu)—a free-to-use, aggregated, and AI-ready chemical compliance engine built specifically for the DPP era.

Most product teams preparing for the EU’s Ecodesign for Sustainable Products Regulation (ESPR) are about to hit a brick wall.
The reason? Substances of Concern (SoC).
Under ESPR, disclosing hazardous chemicals in your Digital Product Passport (DPP) down to 0.1% w/w is becoming a mandatory legal compliance gate.
Yet today, chemical intelligence is trapped behind expensive paywalled corporate databases or buried in 50-page PDF Safety Data Sheets that nobody has time to decipher.
We decided to change that.
We built and opened up the whatt.io Substances of Concern (SoC) Intelligence Database https://soc.product-passports.eu free-to-use, aggregated, and AI-ready chemical compliance engine built specifically for the DPP era.
Here is how it works and what it brings to the table:
1. Open Access & Free for the Community
Compliance data shouldn't be locked behind opaque subscription walls.
100% Free Web Access: Search, explore, and audit without subscriptions or paywalls.
Free MCP Integration: If you are building or experimenting with AI agents, the native Model Context Protocol (MCP) server is free to connect.
2. Powerful Global Aggregation (4,410+ Substances)
Instead of manually cross-referencing half a dozen fragmented portals, we aggregated and unified the regulatory core into a single harmonized matrix:
EU REACH: SVHC Candidate List, Annex XIV (Authorisation), Annex XVII (Restrictions), and RoHS.
Sweden KemI PRIO: Phase-Out (Utfasningsämnen) and Priority Risk-Reduction criteria—giving product developers an 18–24 month early warning on chemicals destined for future bans.
US & Global Standards: California Proposition 65, US EPA CompTox/ECOTOX, and NIH PubChem/HSDB toxicology.
Project SOC-Shield: Multi-tier risk scoring that shows whether a substance is an immediate EU legal blocker, an emerging Nordic phase-out candidate, or a US packaging liability.
3. Built for Simplicity: Fast & Easy to Use
You shouldn't need a PhD in chemistry to check your product:
Instant Lookups: Search by substance name, CAS number, or EC code for instant regulatory dossiers and hazard profiles.
1-Click BOM Auditor: Paste a Bill of Materials with raw CAS numbers and get a multi-jurisdictional compliance report in seconds.
Reverse Lookups: When a chemical is newly restricted or classified as an SVHC, immediately see which product models in your catalog are affected.
What is MCP, and How Does it Supercharge Your Workflow?
The Model Context Protocol (MCP) is Anthropic’s open standard that provides a direct, secure bridge between AI models (like Claude, Cursor, Antigravity, or custom agents) and real-time external databases.
Instead of pasting messy PDF safety sheets into a chat or hoping an LLM won't hallucinate CAS numbers:
MCP gives your AI agents direct tool access to call
search_substances,get_substance_dossier, oraudit_bom_compliance.An AI assistant doing product design, supply chain analysis, or LCA audits can query live, verified chemical regulations in real time.
And the best part? It’s free to use. Anyone running agentic workflows can connect directly to our endpoint.
Connecting the Dots Back to the Digital Product Passport (DPP)
This isn’t just a static reference directory; it is an active ontology node designed for DPPs:
CIRPASS-2 Standards: Every substance record generates machine-readable JSON-LD fragments (
cirpass:SubstanceOfConcern).ESPR Legal Basis: Automatically maps each chemical to its official regulatory article (e.g. ESPR Article 2(28), REACH Art. 57, CLP Annex VI).
End-of-Life & Circularity Data: Tags dismantling hazards and mechanical recycling interference.
Passport Payloads: Plugs seamlessly into whatt.io and
product-passports.eupipelines, converting chemical data into verifiable, audit-proof passport payloads linked to product QR codes or NFC tags.
If we want circularity and safer materials, we have to make chemical transparency fast, accessible, and connected.
Explore the Database (Free Web App): https://soc.product-passports.eu
#DigitalProductPassport #DPP #ESPR #CIRPASS #Sustainability #ChemicalSafety #ModelContextProtocol #AI #SupplyChainTransparency #CircularEconomy #REACH #KemI