# SignGate Agent Risk Utilities
origin: https://base-agent-preflight.bytoken2023.workers.dev
openapi: https://base-agent-preflight.bytoken2023.workers.dev/openapi.json
x402: https://base-agent-preflight.bytoken2023.workers.dev/.well-known/x402
registry: https://base-agent-preflight.bytoken2023.workers.dev/registry.json
workflows: https://base-agent-preflight.bytoken2023.workers.dev/workflows.json

# paid operations
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/base/address-preflight | $0.02 USDC | kyt-wallet-risk | Inspect a Base address before an autonomous payment or contract interaction.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/base/token-preflight | $0.02 USDC | kyt-wallet-risk | Inspect a Base token contract, public reputation, holder count, and DEX liquidity before trading.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/base/merchant-trust | $0.03 USDC | x402-payment-safety | Summarize a Base merchant's public USDC receipt history and payer concentration.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/base/payment-proof | $0.01 USDC | x402-payment-safety | Verify a Base transaction contains the expected canonical USDC payment.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/base/wallet-activity-delta | $0.01 USDC | kyt-wallet-risk | Return recent Base ERC-20 activity for a wallet after a caller-supplied timestamp.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/base/approval-risk | $0.005 USDC | kyt-wallet-risk | Read a live ERC-20 allowance on Base and flag unlimited or unusually large approvals.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/base/contract-verification | $0.005 USDC | kyt-wallet-risk | Inspect Base source verification, compiler metadata, proxy type, and resolved implementations.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/base/usdc-receipt | $0.003 USDC | x402-payment-safety | Extract canonical Base USDC transfers and transaction finality from a transaction hash.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/base/wallet-counterparty | $0.005 USDC | kyt-wallet-risk | Rank counterparties in a Base wallet's recent transactions and ERC-20 transfers.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/base/event-log-monitor | $0.003 USDC | kyt-wallet-risk | Return recent decoded Base event logs at or after a caller-supplied block.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/base/gas-fee-quote | $0.003 USDC | x402-payment-safety | Return live Base gas fees and an estimated transaction cost for a caller-supplied gas limit.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/base/nonce-readiness | $0.003 USDC | x402-payment-safety | Compare confirmed and pending Base nonces before an autonomous transaction is signed.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/base/stablecoin-balance | $0.003 USDC | x402-payment-safety | Return live Base USDC, USDT, and DAI balances with public USD reference rates.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/base/dex-market-monitor | $0.005 USDC | trading-bot-alpha-risk | Monitor Base DEX price, liquidity, volume, and trade activity for a token.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/prediction/market-snapshot | $0.005 USDC | market-context | Return a public Kalshi prediction-market quote, volume, open interest, and orderbook snapshot.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/web/endpoint-preflight | $0.005 USDC | x402-payment-safety | Inspect an unpaid x402 endpoint, decode its payment requirements, and flag unsafe or malformed commerce metadata.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/software/npm-package-preflight | $0.005 USDC | agent-api-supply-chain | Check npm package metadata, maintenance signals, deprecation, license, dependencies, and OSV vulnerabilities.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/software/github-repository-health | $0.005 USDC | agent-api-supply-chain | Score a public GitHub repository using maintenance, release, license, archive, issue, and popularity signals.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/web/url-change-fingerprint | $0.003 USDC | agent-api-supply-chain | Fetch a public URL and return redirect, metadata, cache validators, and a SHA-256 content fingerprint.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/web/feed-snapshot | $0.003 USDC | agent-api-supply-chain | Normalize the latest entries from a public RSS or Atom feed with stable item fingerprints.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/base/transaction-intent | $0.005 USDC | kyt-wallet-risk | Decode Base transaction calldata before signing and flag token transfers, approvals, unlimited spending, and unknown selectors.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/agent/a2a-card-preflight | $0.005 USDC | agent-api-supply-chain | Discover and validate a public A2A Agent Card, its skills, provider, authentication, endpoint consistency, and unsafe URLs.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/web/openapi-preflight | $0.005 USDC | agent-api-supply-chain | Validate a public OpenAPI JSON or YAML document, server URLs, authentication declarations, operation coverage, and content fingerprint.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/web/domain-trust-preflight | $0.005 USDC | agent-api-supply-chain | Inspect public DNS, DNSSEC, mail, CNAME resolution, RDAP registration age, expiration, and domain trust signals.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/software/pypi-package-preflight | $0.005 USDC | agent-api-supply-chain | Check PyPI package metadata, release age, yanked status, Python requirements, dependencies, license, and OSV vulnerabilities.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/payment-guard/evaluate | $0.01 USDC | x402-payment-safety | AI agent x402 payment firewall: enforce budgets and mandates, simulate transactions, score merchant and domain risk, prevent replay, require human approval, and audit delivery before autonomous spending.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/base/alpha-risk | $0.003 USDC | trading-bot-alpha-risk | High-frequency Base wallet or token risk and alpha context for trading bots before copying, buying, or interacting.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/base/token-alpha-snapshot | $0.003 USDC | trading-bot-alpha-risk | Fast Base token alpha snapshot for trading bots: liquidity, volume, buy/sell imbalance, risk flags, and bot-ready trade bias.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/base/wallet-copytrade-risk | $0.003 USDC | trading-bot-alpha-risk | Copytrade risk snapshot for a Base wallet: public risk, activity, counterparty quality, and whether a bot should follow, monitor, or avoid.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/base/new-pool-risk | $0.003 USDC | trading-bot-alpha-risk | New Base pool risk snapshot for bots: pair age, liquidity, activity imbalance, contract flags, and launch-stage risk score.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/x402/server-trust | $0.01 USDC | x402-payment-safety | Score an x402 API server using public payment volume, transaction count, buyer concentration, seller address, freshness, and chain coverage.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/x402/origin-due-diligence | $0.01 USDC | x402-payment-safety | Run x402 origin due diligence for an AI buyer: resources, payment consistency, metadata quality, seller risk, and next checks.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/x402/resource-compare | $0.01 USDC | x402-payment-safety | Compare two to five x402 resources or servers by price, payment metadata, schema quality, seller consistency, and budget fit.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/agent/spend-route-plan | $0.005 USDC | x402-payment-safety | Plan which Agent Payment Guard x402 resources an autonomous agent should buy for a task, budget, and risk tolerance.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/base/token-exit-risk | $0.003 USDC | trading-bot-alpha-risk | Estimate Base token exit risk for bots using liquidity depth, volume/liquidity pressure, sell imbalance, pair age, and token flags.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/bcs/labels | $0.02 USDC | blockchainsecurity-data | Proxy BlockchainSecurity address labels for AI agents using a paid x402 call and a server-side API key.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/bcs/assets | $0.003 USDC | blockchainsecurity-data | Return BlockchainSecurity asset specs for a chain through an x402-paid AI-friendly wrapper.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/bcs/chains | $0.003 USDC | blockchainsecurity-data | Return BlockchainSecurity supported chains and native/token entries for AI agents.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/bcs/registry | $0.005 USDC | blockchainsecurity-data | Return the BlockchainSecurity token registry through an x402 paid resource.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/bcs/resolve | $0.005 USDC | blockchainsecurity-data | Resolve BlockchainSecurity asset symbols or contracts into asset specs through an x402 paid wrapper.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/bcs/address-risk | $0.15 USDC | blockchainsecurity-data | Run BlockchainSecurity behavior-based address risk scoring for Ethereum or Tron through an x402 paid wrapper.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/bcs/address-classify | $0.10 USDC | blockchainsecurity-data | Classify one or more blockchain addresses by likely entity type using BlockchainSecurity ML classification.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/bcs/wallet-overview | $0.08 USDC | blockchainsecurity-data | Fetch a BlockchainSecurity wallet activity and balance overview through an x402 paid wrapper.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/bcs/trace | $0.49 USDC | blockchainsecurity-data | Run BlockchainSecurity multi-hop fund-flow tracing from a starting address through an x402 paid wrapper.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/bcs/cross-chain | $0.29 USDC | blockchainsecurity-data | Track a bridge transaction across chains using BlockchainSecurity cross-chain intelligence.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/agent/payment-risk-gateway | $0.005 USDC | x402-payment-safety | x402-discoverable AI agent stablecoin payment firewall: verify intent, enforce dynamic limits, score recipient risk, and return a signer directive before payment execution.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/agent/rpc-preflight | $0.005 USDC | agent-chain-data | Preflight an agent RPC or x402 chain-data request before payment: endpoint origin, method risk, chain fit, price, and budget checks.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/chain/rpc-capability-probe | $0.005 USDC | agent-chain-data | Score whether an RPC route likely fits agent chain-data work: logs, storage, historical reads, trace, WebSocket, and local-fork research.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/agent/chain-data-route-plan | $0.005 USDC | agent-chain-data | Plan a budget-aware route for agent chain-data tasks across RPC reads, indexed data, cached intelligence, and payment review.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/chain/indexed-query-preflight | $0.005 USDC | agent-chain-data | Preflight an indexed chain-data query before payment: schema discovery, query type, estimated rows, cost fit, and safety flags.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/agent/rpc-payment-guard | $0.005 USDC | agent-chain-data | Guard an agent payment for RPC or indexed chain-data access with endpoint, recipient, amount, budget, and signer-directive checks.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/agent-risk/address-risk | $0.01 USDC | kyt-wallet-risk | Return an agent-ready risk decision before paying, allowlisting, or interacting with an address.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/agent-risk/token-risk | $0.01 USDC | kyt-wallet-risk | Return token safety flags for honeypot, tax, proxy, authority, liquidity, concentration, and approval risk.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/agent-risk/transaction-decode-risk | $0.01 USDC | kyt-wallet-risk | Decode an EVM transaction shape and return pre-signing risk flags for transfers, approvals, and unknown calldata.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/agent-risk/wallet-dossier | $0.03 USDC | kyt-wallet-risk | Return a compact wallet dossier with risk, exposure, counterparty, behavior, and next-check guidance.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/agent-risk/safe-transaction-review | $0.02 USDC | x402-payment-safety | Review a planned payment, approval, swap, bridge, or contract call before an agent signs.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/agent-risk/swap-preflight | $0.01 USDC | trading-bot-alpha-risk | Preflight a token swap route for token safety, liquidity, slippage, route, and policy risk.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/agent-risk/stablecoin-health | $0.01 USDC | kyt-wallet-risk | Check stablecoin payment suitability, issuer controls, blacklist/freeze risk, and treasury policy fit.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/agent-risk/policy-decide | $0.01 USDC | x402-payment-safety | Return a normalized ALLOW/REVIEW/BLOCK policy decision for an agent payment, signing, or tool-call request.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/address-risk/lookup | $0.10 USDC | blockchainsecurity-data | Look up one wallet against a curated public-source sanctions, scam, ransomware, and stablecoin blacklist intelligence feed.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/address-risk/snapshot | $499.00 USDC | blockchainsecurity-data | Download the full source-attributed public wallet risk intelligence snapshot as JSONL.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/address-risk/sample | $0.005 USDC | blockchainsecurity-data | Return a small paid sample of the public wallet risk intelligence schema, provenance, and label format before buying lookup or dataset downloads.
GET https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/address-risk/delta | $99.00 USDC | blockchainsecurity-data | Download the latest or requested wallet risk intelligence batch delta as JSONL.
POST https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/payment-guard/evaluate | $0.01 USDC | x402-payment-safety | Evaluate an agent payment with a JSON request body and return an auditable ALLOW/REVIEW/BLOCK decision.
POST https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/payment-guard/policies | $0.01 USDC | x402-payment-safety | Create an owner-controlled Payment Guard policy profile for budget, approval, and signer controls.

# recommended workflows
ai-buyer-before-paying-x402-api: x402-origin-due-diligence -> x402-resource-compare -> x402-endpoint-preflight -> x402-server-trust -> agent-payment-guard
wallet-or-token-kyt-preflight: public-wallet-risk-lookup -> base-address-preflight -> bcs-address-labels -> base-wallet-counterparty -> evm-transaction-intent
kyt-or-aml-local-dataset-import: public-wallet-risk-sample -> public-wallet-risk-snapshot -> public-wallet-risk-delta -> public-wallet-risk-lookup -> bcs-address-risk-score -> bcs-fund-trace
stablecoin-payout-screening: public-wallet-risk-sample -> public-wallet-risk-lookup -> bcs-wallet-overview -> bcs-address-classify -> bcs-address-risk-score
trading-bot-fast-filter: base-alpha-risk-context -> base-token-exit-risk -> base-token-alpha-snapshot -> base-new-pool-risk -> base-dex-market-monitor
agent-tool-supply-chain: domain-trust-preflight -> openapi-spec-preflight -> a2a-agent-card-preflight -> npm-package-preflight -> pypi-package-preflight -> github-repository-health