Six expert-grade x402 endpoints for corrosion engineering, EPA Toxics Release Inventory lookups, facility risk scoring, chemical hazard analysis. LLM-backed by Llama 3.3 70B with vertical-specialized system prompts. $0.03–$0.10 per call. Settled on Base mainnet.
Each endpoint returns structured analysis grounded in industry standards (API 571, NFPA, OSHA PSM, NEPA). No subscription. No minimum.
Standard x402 flow: HTTP 402 challenge → sign EIP-3009 USDC transfer → resubmit. CDP facilitator handles settlement on Base mainnet.
# 1. Initial request — server returns 402 with payment instructions curl -X POST https://x402.adametherzlab.com/api/corrosion-rate \ -H "Content-Type: application/json" \ -d '{"query": "CS pipe 350F 80ppm chloride 250psi steam mpy"}' # 2. Read payment-required header, sign EIP-3009 with @x402/client, resubmit: curl -X POST https://x402.adametherzlab.com/api/corrosion-rate \ -H "Content-Type: application/json" \ -H "payment-signature: <base64-encoded EIP-3009 signed payload>" \ -d '{"query": "CS pipe 350F 80ppm chloride 250psi steam mpy"}' # Returns: { "endpoint": "/api/corrosion-rate", "name": "Corrosion Rate Estimation", "vertical": "Industrial Compliance", "query": "...", "result": "<structured corrosion analysis with mpy estimate, RBI recommendations, inspection intervals>", "pricing": { "amount": "0.05", "currency": "USDC", "network": "base" }, "meta": { "model": "meta-llama/llama-3.3-70b-instruct", "latency_ms": 18203 } }
Use any x402 client: MCP server,
@x402/client npm package, or the
Coinbase CDP SDK.
No subscription. No minimums. No "premium tier" upcharges for compliance-grade analysis. USDC settles in 2–5 seconds on Base.
100 corrosion rate estimates = $5. 1,000 EPA TRI lookups = $30. Cheap enough to embed in cron jobs and agent workflows.
No. These endpoints generate engineering-grade analysis grounded in industry standards. They do not produce signed-and-sealed deliverables. Use them for screening, scoping, triage, draft generation, agent automation — not for documents that legally require a Professional Engineer's stamp.
Meta Llama 3.3 70B Instruct via NVIDIA NIM, with vertical-specialized system prompts written for each domain (corrosion engineering, EPA TRI, EHS risk, chemical hazard). Future versions may route specific verticals to specialized models.
Because most engineering teams don't know in advance how many compliance lookups they'll need this month. Pay-per-call lets a single agent or script consume capacity in proportion to actual demand, no commitment, no waste.
Any wallet on Base with USDC works. The x402 protocol uses EIP-3009 transferWithAuthorization — you sign off-chain, the facilitator settles. No KYC, no signup. Use @x402/client, the MCP server, or any compatible library.
You can cite the analytical reasoning but not "an API said so." Reasonable use: have ComplianceOS draft an initial assessment, then have a qualified engineer review/refine/sign. Saves hours of blank-page work.