Add eucompliance.tools to the ecosystem page

[PatrickPi1312]

Adds an entry under Services for eucompliance.tools.

What it is

Compliance and pre-transaction checks priced per call over x402 (exact, eip155:8453, USDC), from $0.002, no account and no API key. Also exposed as an MCP server.

The set that is probably most relevant to this ecosystem is the on-chain pre-flight group, because it addresses a failure mode every paying agent hits:

• Pre-flight — one call answers whether a transaction will go through: native balance vs. estimated gas, a full simulation with the revert reason decoded into plain text, stuck pending nonces, whether the recipient is a contract or a wallet, ERC-20 allowance for the amount, and a sanctions screen of the counterparty. Returns send / do not send with every blocking reason.
• Transaction status — what happened, and if it failed, why, recovered by replaying the call against the block it was mined in. The receipt alone does not carry that reason.
• Allowance & balance — Base, Ethereum, Arbitrum, Optimism, Polygon.

Plus the EU compliance side: sanctions screening (EU/UN/UK, re-indexed daily), VAT ID validation against VIES, IBAN, counterparty due diligence with GLEIF LEI, EU VAT treatment with EN 16931 codes, e-invoice validation, and bookkeeping for an agent'"'"'s own USDC spending (chain → EUR at the ECB rate of the payment date → CSV).

Notes for review

• Every response carries an EIP-191 signed receipt with the result hash. Verification is offline and needs no trust in us: pip install eucompliance-verify (MIT source).
• Discovery at /.well-known/x402 and /llms.txt; already listed in the Bazaar and the MCP registry.
• Free to try without signing up: curl "https://api.eucompliance.tools/free/vat-rules?supplier=AT&customer=DE&b2b=true&type=service"
• Operated as an Austrian sole proprietorship with a VAT ID, so an ordinary invoice is possible alongside per-call USDC.

I could not add a logo file in this PR — happy to follow up with one in the convention used under typescript/site/public/logos/, or to drop the logoUrl field if an entry without a logo is preferred.

[cb-heimdall]

🟡 Heimdall Review Status

Requirement	Status	More Info
Reviews	🟡 0/1	Denominator calculation Show calculation 1 if user is bot 0 1 if user is external 0 2 if repo is sensitive 0 From .codeflow.yml 1 Additional review requirements Show calculation Max 0 0 From CODEOWNERS 0 Global minimum 0 Max 1 1 1 if commit is unverified 1 Sum 2