Agent Decision & Evidence Tools over MCP and x402

41 machine-callable tools, including 10 free preparation, routing and verification tools. Use the existing APIs per call in USDC through x402, or request a scoped Invoice Guard Pilot for your accounts-payable workflow. The per-call APIs require no account, API key, subscription or minimum purchase. The pilot is a separate business offer, not an MCP tool.

• Live catalog: eucompliance.tools
• MCP endpoint: https://mcp.eucompliance.tools/mcp
• Exact machine-readable catalog: agents.json
• Agent guide: llms.txt
• x402 discovery: .well-known/x402
• Invoice Guard Pilot: scope and enquiry

The service is built for agents that need a bounded decision or a cited piece of evidence, not an unstructured report. Paid successes return machine-readable structured content and a signed receipt. Invalid input, unavailable required evidence and tool errors are not settled.

Invoice Guard Pilot: evidence before approval

For accounts-payable teams and integration partners who already receive structured EU invoices and want a reproducible check before their existing human approval step.

EUR 149 net, once, for a 30-day pilot — available on request. We agree the workflow, accepted documents and volume in writing before an order. The scope covers one bounded workflow: a format/integration check, a synthetic example run, and a documented handover including open points, within the 30-day pilot window. API-call costs are separate and agreed in advance. This is not a subscription or an automatically activated service. Optional integration setup starts from EUR 499 net, separately scoped and quoted; it is not included or charged automatically.

The existing building blocks can:

1. Check the document format and required buyer context before a paid call.
2. Combine EN 16931 findings, totals, VIES, EU/UN/UK name-list matches, VAT treatment and comparison with the buyer's trusted payee IBAN in one signed dossier.
3. Route READY_FOR_BUYER_APPROVAL, HOLD_FOR_REVIEW or DO_NOT_PAY into the buyer's approval process, with reason codes, evidence sources and freshness limits.

Available now: UBL/CII XML, or ZUGFeRD/Factur-X PDFs containing one invoice XML. Not included: ordinary PDFs, scans/OCR, accounting-ledger duplicate detection, independent bank-account ownership verification, legal clearance or payment execution. The optional Python adapter currently accepts XML only. A signature proves integrity and the configured issuer, not that an invoice is genuine or legally approved.

Review the pilot scope · Request a scoped pilot · Inspect the buyer-side integration

Prefer self-service? invoice_to_pay_dossier_eu remains 1.00 USDC per completed dossier. The euro-priced pilot does not change the public API price or authorize extra purchases.

Try invoice preparation without a wallet

The executable free example sends one fixed, fictional UBL input to our free preparation endpoint. It uses Python's standard library, needs no account or API key, and cannot buy a dossier or execute a payment.

git clone https://github.com/PatrickPi1312/eucompliance-tools.git
cd eucompliance-tools
python3 examples/invoice_precheck.py
python3 examples/invoice_precheck.py --missing-trusted-payee

The first invocation demonstrates an input eligible for the next, separately authorized paid step. The second holds the same fictional input with TRUSTED_PAYEE_IBAN_REQUIRED. Neither approves an invoice. The sample is deliberately not a full EN 16931-conformant invoice and uses a fictional VAT ID; preparation does not run VIES, sanctions or the full invoice validation. Both outcomes report paid_calls: 0. Requests are subject to the existing free quota; errors stop without retries.

Expected results, safety limits and offline tests · Buyer-controlled paid integration

Add the MCP server

Claude Code:

claude mcp add --transport http eucompliance https://mcp.eucompliance.tools/mcp

Claude Desktop, Cursor or another streamable-HTTP MCP client:

{
  "mcpServers": {
    "eucompliance": {
      "type": "http",
      "url": "https://mcp.eucompliance.tools/mcp"
    }
  }
}

If the right product is unclear, call the free recommend_agent_tool tool with the job, available inputs and optional price cap. It returns one to three exact catalog matches and a safe workflow without calling a model, making a payment or executing the selected tool.

Start from the job, not the catalog

Agent job	Tool	Result	Price
Read live state on one or many EVM chains	rpc_read_batch	1–20 allowlisted read-only JSON-RPC calls across 28 mainnets	$0.01
Decide whether an on-chain transaction is safe to submit	tx_preflight	proceed, review or block, with five core checks and optional token evidence	$0.02
Turn live market evidence into a time-bounded action	market_decision_pack	ENTER_RISK, WAIT or REDUCE_RISK, reasons, risks and 15-minute expiry	$0.05
Check an EU counterparty before onboarding or payment	check_counterparty_eu	VAT, EU/UN/UK sanctions and IBAN consistency → clear, review or blocked	$0.02
Decide whether an EU supplier invoice is ready for approval	invoice_to_pay_dossier_eu	EN 16931, VIES, sanctions, VAT and trusted-payee evidence → READY, HOLD or DO NOT PAY	$1.00
Check ordinary DE/AT goods before requesting a US carrier quote	us_import_readiness_guard	USITC/CPSC-backed readiness decision, unknowns and safe next actions	$0.25
Validate an EU e-invoice	validate_einvoice_eu	Official EN 16931 findings with rule codes and severity	$0.10
Run fixed-price short inference	agentllm_micro, agentllm_basic, agentllm_plus	OpenAI-compatible completion plus disclosed upstream usage and signed delivery receipt	$0.003 / $0.005 / $0.02

The complete 41-tool list, exact input and output schemas, current prices and transport-specific HTTP offers are always published in agents.json. Published prices are in USDC; inspect the live quote before authorizing a call. screen_sanctions_eu and spot_price each cost 0.10 USDC per successful result.

Read-only chain evidence

rpc_read_batch is the broad entry point: one default chain plus optional per-request chain overrides, up to 20 allowlisted read calls, and 28 named EVM mainnets. Focused tools are also available for wallet balance, gas estimate, contract information, transaction status and ERC-20 balance/allowance. None of them signs, approves, transfers or broadcasts a transaction.

For a decision rather than raw evidence, use tx_preflight. Missing evidence is never treated as approval. Wallet-address sanctions screening is not claimed because name lists cannot clear an address.

Market evidence and decisions

Agents can buy the smallest useful observation or a complete decision:

• spot_price — multi-exchange median and spread: $0.10
• open_social_search — bounded Bluesky and Hacker News evidence: $0.002
• perp_market_data — Hyperliquid funding, open interest, premium and volume: $0.005
• market_history — archived raw or daily series: $0.008
• market_data or coin_positioning_brief — computed context with disclosed rules: $0.01
• market_decision_pack — action, confidence, reasons, risk flags and invalidation: $0.05

Every paid market result identifies its sources and freshness. The decision pack expires after 15 minutes instead of encouraging an agent to reuse stale market advice.

High-value guarded workflows

The invoice and US-import products have free preparation tools. Run them first; they validate shape and required context and return the exact paid next step. The paid tools never release a payment, place an order, create a forwarding address, book a carrier, sign a wallet transaction or broadcast anything.

invoice_to_pay_dossier_eu accepts UBL/CII XML or ZUGFeRD/Factur-X PDFs with one embedded invoice XML. An ordinary or scanned PDF is intentionally unsupported. READY_FOR_BUYER_APPROVAL is an evidence decision, not proof of delivery, internal approval, duplicate-ledger status or bank-account ownership.

Add invoice evidence to your existing approval workflow

The invoice-guard integration is a small, opt-in Python adapter for buyers. It runs the free preparation check, delegates a single capped 1.00-USDC purchase to your authorized transport, and checks the signed dossier against the exact invoice, buyer context and freshness window. A persistent journal reuses valid identical evidence and stops instead of buying again after an ambiguous timeout. Equivalent decimal amount formats share one claim. READY_FOR_BUYER_APPROVAL advances only to your existing approval stage; the adapter never signs or submits an invoice payment.

You supply the authorized MCP/x402 transport and pin the trusted receipt issuer. The adapter accepts invoice XML only; its tests are offline, not a paid end-to-end certification. Making this check mandatory is an explicit operator policy for your own workflow, not a requirement imposed on other agents or platforms.

us_import_readiness_guard is limited to declared ordinary goods from Germany or Austria to the United States. It supplies non-binding HTS evidence and readiness guidance; it is not customs clearance, a binding classification or a shipping service.

x402 payment behavior

HTTP products return an x402 v2 payment requirement with the exact amount. Payment options are published for Base, Arbitrum, Polygon and Solana. The caller signs the selected option and retries the identical request. The server never receives a wallet private key and does not perform a buyer-side transfer.

Use a payment policy that pins the exact HTTPS resource, method, network, recipient and maximum amount. The free prepare_x402_purchase_guard plus paid x402_purchase_guard workflow can check an already received x402 challenge before a buyer confirms it; it never pays the target.

Verify a delivered result

Signed receipts can be checked independently:

pip install eucompliance-verify

from eucompliance_verify import verify_receipt, PaymentPolicy

verified = verify_receipt(response_json)
decision = PaymentPolicy(max_age_hours=24).check(response_json)
if not decision.allowed:
    raise RuntimeError("receipt outside policy")

Verifier source: eucompliance-verify. VAT conformance fixtures: eu-vat-conformance. The invoice adapter includes offline regression tests. These are implementation checks, not a live-purchase, fraud-prevention or legal certification. Use synthetic examples in public issues; do not post invoices, personal data, wallet secrets or API credentials there.

Operator

eucompliance.tools is operated by Patrick Kaufmann, sole proprietor in Vienna, Austria. The service exposes evidence and decision APIs; it does not act as a bank, wallet signer, customs broker, freight forwarder or legal adviser.

On-chain identity: ERC-8004 agent #60255 on Base.