Five demos. One protocol. No accounts.
Each demo is the same five-beat flow: chat free, agent quotes a price, approval card with the exact endpoint + body, sign one EIP-3009 USDC authorization, see the result. The signing screen is the real Coinbase Smart Wallet typed-data view — not a mockup.
aura — $0.010
Color + tier (S/A/B/C/D/F) + score (0–9999) + 2-sentence description. Universal text input. Powered by Claude on AWS Bedrock.
POST /v1/aura {target}
screen — $0.001
OFAC SDN + sanctions screening for any wallet. Returns sanctions match, flagged programs (Tornado Cash, Lazarus, etc.), risk tier.
GET /v1/screen?wallet=…
anchor — $0.005
Anchor any 32-byte hash to Base + Solana mainnet in parallel. Returns both tx URLs as cryptographic proof of when the hash existed.
POST /v1/anchor {hash, note}
roll — $0.001
Verifiable signed RNG. Cryptographically-random integers signed by the treasury EOA. Drop-in VRF for game studios, raffles, NFT mint reveals.
POST /v1/roll {low, high, count, label?}
investigate — $7.77 · 90 s
Multi-step wallet due-diligence. Agent runs 4–6 anchor-x402 sub-calls (sanctions, intel, name resolve, tx decode), synthesizes a verdict via Claude on AWS Bedrock, signs the deliverable, and anchors the report hash on Base + Solana. Async 5–10 min in production; this demo compresses the polling.
POST /v1/investigate {address}
Bring USDC on Base. Cheapest call is $0.001.
What every demo shows
The agent never spends without your signature. Each paid call shows the approval card with the exact endpoint, the exact body, and the exact USDC amount before the wallet popup. You sign one EIP-3009 transferWithAuthorization per call — no standing approval, no agent-burns-through-your-wallet failure mode.
The signing screen is real. That’s the actual Coinbase Smart Wallet sign view at keys.coinbase.com with the EIP-712 typed-data tree expanded. The price line is rendered per-endpoint to match what you’d actually see; nothing else is mocked.
Results are structured. Each endpoint returns a small JSON object that an agent can route on — sanctions verdict, tier, anchor tx hashes, verifiable signature. The result cards in these demos are the same components the hosted chat at chat.anchor-x402.com renders post-payment.
Looking for the canonical 30-second story?
The original /demo/ page walks through the full flow on the aura endpoint with five-beat narration. Use it as the lead-in; come back here for the per-endpoint variations.
Eleven more endpoints not pictured
The catalog has 16 paid endpoints total — these 5 are a representative cross-section. The rest:
- Decode
/v1/decode/tx,/v1/decode/calldata($0.001 each) — structured tx + EVM calldata decode across Base/Ethereum/Solana - Resolve + price
/v1/resolve/name,/v1/price/token($0.001 each) — ENS+SNS, USD spot price - Intel
/v1/intel/wallet($0.005) — bundled wallet intelligence in one call - Attest
/v1/attest($0.010) — verify a signature + dual-chain anchor the result - Parse
/v1/parse/datetime($0.001) — freeform → ISO 8601 - LLM
/v1/roast,/v1/oracle,/v1/tldr,/v1/grade($0.01–$0.05) — universal text inputs, anchored verdicts where it makes sense
Discoverable at /.well-known/x402.json, /openapi.json, and the MCP server anchor-x402-mcp.