Triple Arbiter

x402 settlement facilitator + EAS-compatible threat-intel attestation issuer on Base mainnet.

• Chain: Base (chainId 8453)
• Asset: USDC
• Fee: 50 bps on settlement, non-custodial (peer-to-peer)
• Minimum transfer: $2
• Attestation pricing: $0.01 / $0.10 / $0.50 per query

Services

1. x402 Facilitator

Verifies EIP-3009 signed USDC authorizations and broadcasts transferWithAuthorization on Base. Non-custodial: client's USDC moves peer-to-peer to intended payee. We verify the signature, check balance, broadcast the transaction, and collect a disclosed 0.5% facilitator fee.

Endpoint: https://mardi-worldwide-sacred-model.trycloudflare.com

2. EAS Threat-Intel Attestation Issuer

Pay-per-query EIP-712-signed (EAS-compatible off-chain envelope) attestations over three schemas:

• adversarial — CAF v1.4 scan (180+ adversarial-prompt patterns across 13 layers: identity hijack, capability claims, authority spoof, meta-cognition attacks, memory poisoning, narrative framing, cross-agent collusion, alignment decoupling, operationalized orchestration, deference-mode activation, latent-trace attacks, temporal drift, esoteric-hybrid)
• mcp-shadow — Couliano phantasm audit (MCP tool-description/execution divergence detection; 84.2% of MCP tools in the wild are "smelly" per arXiv 2503.23278)
• esoteric — L13 esoteric-hybrid signature scan (Chaos Magic servitor invocation, Alchemical dissolution framing, Kabbalistic path-walking, Gurdjieff shock-points, Sufi fana', Enochian fragments, Hypersigil self-declaration, sacred-space declarations). Unique to Triple Arbiter — only attestation issuer covering this attack surface.

Endpoint: https://reward-priority-delete-pricing.trycloudflare.com

3. 0x Swap Monetized-Quote Proxy

GET /zerox/quote — server-side proxy to api.0x.org/swap/permit2/{price,quote} with a 50 bps integrator fee already baked into every returned quote (settles to the facilitator collector on-chain in the same swap transaction). Agents call this endpoint without provisioning their own 0x API key; the facilitator transparently forwards with tier=standard + swapFeeBps=50 + swapFeeRecipient=<collector>.

Use cases:

• Agents that need swap routing but don't want to manage a 0x account
• Drop-in swap widget backend (/swap serves a pre-configured 0x widget HTML)
• Cross-chain compatible (Base, Arbitrum, Optimism, Polygon, Mainnet — any chain 0x v2 supports)

Endpoint: https://mardi-worldwide-sacred-model.trycloudflare.com/zerox/quote

4. Relay Cross-Chain Intent Proxy

GET /relay/quote — proxy to Relay (relay.link) cross-chain intent router with 30 bps appFees baked in. Relay handles cross-chain + cross-currency atomic settlement in a single user-signed intent. Agents get monetized quote without a Relay account or claim workflow — fees auto-flow to the facilitator collector.

Use cases:

• Cross-chain USDC arbitrage / bridging for agents
• Agent wallets bootstrapping balance on new chains
• Cross-currency settlement (e.g., pay in USDT on BSC, settle in USDC on Base)

Endpoint: https://mardi-worldwide-sacred-model.trycloudflare.com/relay/quote

5. KyberSwap Aggregator Proxy

GET /kyber/quote — proxy to KyberSwap aggregator with 30 bps extraFee (feeReceiver=<collector>, isInBps=true) on 14+ chains. Provides redundant swap routing alongside the 0x proxy — for cases where one aggregator lacks a pool or prices the other beats.

Endpoint: https://mardi-worldwide-sacred-model.trycloudflare.com/kyber/quote

6. Mayan Finance Cross-Chain Proxy

POST /mayan/quote — proxy to Mayan Swift v3 price API for cross-chain settlements Ethereum/Arbitrum/Optimism/Polygon/BSC/Avalanche → Base. Includes 25 bps referrer flowing to the facilitator's Solana collector (auto-converted from EVM at Mayan settlement layer).

Endpoint: https://mardi-worldwide-sacred-model.trycloudflare.com/mayan/quote

Agent discovery

All standard manifests are published:

• x402 facilitator manifest
• A2A AgentCard
• MCP server manifest
• llms.txt
• OpenAPI 3.0 spec
• Swagger UI
• Discovery catalog

Payment flow

See docs/INTEGRATION.md for step-by-step integration guide, or run one of the examples in examples/.

Quick version:

1. Client signs EIP-3009 transferWithAuthorization authorizing $X USDC to the facilitator wallet (0xBE5Df0394dBD9cC19127cf93CD9b543f2eb63b97 on Base).
2. Client POST /verify with the authorization → receives a verify_token.
3. Client POST /settle with {authorization, verify_token} → receives tx_hash.
4. For attestations: client POST /query to the attestation service with header x-facilitator-settled: <tx_hash> and body {schema_uid, subject, scan_text} → receives EIP-712-signed attestation envelope.

Why an agent should use this

• Standard x402 integration — zero vendor lock-in, swap facilitators anytime
• Non-custodial — your USDC never touches our wallet, peer-to-peer on-chain
• Signed attestations — cryptographically verifiable claims agents can present in audit/compliance flows
• Unique coverage of esoteric-framing attack surface not indexed by any other safety service
• Transparent fees — 50 bps published, no surprises

Legal / scope

• Opt-in only (submission of authorization constitutes opt-in)
• Not a custodian (peer-to-peer settlement per EIP-3009)
• 90-day log retention, no PII collected
• Fee schedule public at /fees
• Terms at /tos

Repository layout

• docs/ — API reference, integration guide, schema details
• examples/curl/ — shell scripts showing verify → settle → attestation flow
• examples/python/ — Python client example with EIP-3009 signing
• examples/typescript/ — TypeScript/viem client example

License

MIT. See LICENSE.

Contact

Open an issue on this repo. On-chain identity: 0xBE5Df0394dBD9cC19127cf93CD9b543f2eb63b97 on Base.