AssayChain Mineral Intelligence

On-chain critical mineral intelligence API. Returns USGS commodity benchmarks, mining district profiles, and grounded RAG answers synthesized from 195 EAS-attested files (Base mainnet). Every response includes IPFS CIDs and EAS attestation UIDs for verifiable provenance. Core USGS benchmark and price-snapshot endpoints are free (rate-limited); advanced endpoints use x402 micropayments (from $0.10 USDC per call, Base network) — no API keys required.

Skills

• Critical Mineral Commodity Benchmark
  Returns USGS Mineral Commodity Summaries benchmark data for one of 20 critical minerals: copper, gold, silver, lithium, cobalt, nickel, manganese, graphite, antimony, gallium, germanium, platinum_group, rare_earths, tellurium, tin, titanium, tungsten, uranium, vanadium, zinc. Response includes spot price, grade benchmarks, production by country, recovery benchmarks, chemistry penalty elements, IPFS CID, and EAS attestation UID on Base. Free (rate-limited).
  critical mineralsUSGSbenchmarkcommoditiessupply chainEAS attestationIPFSUFLPAEU Battery RegulationESG
• Mining District Profile Lookup
  Returns an attested profile for one of 175 USGS mining districts across the US, Canada, and Mexico. Each profile includes district name, state/province, primary commodities, known deposits, historical production context, IPFS CID, and EAS attestation UID on Base. Useful for supply-chain provenance tracing, UFLPA origin verification, and DoD/DFC domestic sourcing assessments. $0.50 USDC per call via x402.
  mining districtsUSGSprovenancesupply chaindomestic sourcingUFLPADoDDFCEAS attestationIPFS
• Daily Mineral Market Context
  Attested daily bundle for 20 critical minerals: spot price, Baltic Dry Index, WTI crude, producing-country FX rate, LME warehouse stock. FRED + LBMA sourced. EAS-attested weekly on Base. Free (rate-limited).
  priceBDIWTIFXLMEmarket-contextESGsupply-chainFREDLBMA
• Grounded Mineral Intelligence Q&A
  Ask any question about critical minerals and receive a grounded answer synthesized by Groq llama-3.1-8b-instant strictly from the 195-file attested corpus (20 commodity JSONs + 175 district profiles). Each answer cites the source passages by IPFS CID. Useful for compliance research, procurement due diligence, and sourcing decision support. $0.10 USDC per call via x402. Idempotent — replaying the same payment header returns the same cached answer.
  RAGgrounded QAcritical mineralscompliance researchGroqLLMEAS attestationIPFS provenancex402

How to call

https://assaychain.com/api

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