# Services from kair-os.trade on Zero

> kair-os.trade serves 9 paid API services for AI agents, indexed by Zero. Each is callable per call with payment handled by Zero.

Canonical page: https://www.zero.xyz/host/kair-os.trade
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/kair-os.trade/health.json

## Services

- [kair-os.trade Token Verdict](https://www.zero.xyz/c/kair-os-trade-token-verdict-6c373dce/llms.txt): $0.02/call via x402. Simulates buy/sell of a Base token at one canonical block, measures actual transfer balance deltas, checks for contract-control evidence, and returns an uncertainty interval as an evidence score for token safety screening.
- [kair-os.trade Uniswap V3 Base Swap Quote Comparator](https://www.zero.xyz/c/kair-os-trade-uniswap-v3-base-swap-quote-comparator-72e60106/llms.txt): $0.01/call via x402. Fetches and compares four Uniswap V3 single-pool exact-input swap quotes on Base for a given token pair and input amount, returning raw output amounts and gas estimates without executing any swap.
- [kair-os.trade Base Wallet Snapshot](https://www.zero.xyz/c/kair-os-trade-base-wallet-snapshot-133e7b4a/llms.txt): $0.003/call via x402. Returns exact integer ETH and ERC-20 token balances for a specified Base address at one finalized block, with optional token metadata and per-token error reporting.
- [kair-os.trade Transaction Diagnostic](https://www.zero.xyz/c/kair-os-trade-transaction-diagnostic-1413ff7c/llms.txt): $0.01/call via x402. Diagnoses failed Solana or Base transactions from on-chain evidence, returning root cause, supporting evidence, and a proposed correction with simulation limits.
- [Kair-OS AgentGuard Prompt Injection & Security Screener](https://www.zero.xyz/c/kair-os-agentguard-prompt-injection-security-screener-9c1179f6/llms.txt): $0.003/call via x402. Screens up to 3000 characters of untrusted text for prompt injection, secret exfiltration, deceptive payment, and phishing attacks, returning risk scores and a flagged suspect passage.
- [kair-os.trade Base Contract Inspector](https://www.zero.xyz/c/kair-os-trade-base-contract-inspector-edff28fd/llms.txt): $0.005/call via x402. Inspects a Base mainnet contract address to return bytecode fingerprint, EIP-1967 proxy storage slots, reported owner, and ERC-165 interfaces as raw on-chain evidence.
- [kair-os.trade Smart Money Flow](https://www.zero.xyz/c/kair-os-trade-smart-money-flow-fb8e0c60/llms.txt): $0.02/call via x402. Returns recent USDC token transfer flows for a Base token across sampled Uniswap V3 pool swaps, showing exact counterparties and nominal USDC amounts within a configurable time window.
- [kair-os.trade Early Signal (Base Token)](https://www.zero.xyz/c/kair-os-trade-early-signal-base-token-0f5a2aa6/llms.txt): $0.01/call via x402. Returns early social and on-chain signals for a Base token address, including X mention counts across three 24h windows, sentiment tone, mention acceleration, and canonical Uniswap pool balances.
- [kair-os.trade x402 Service Recommender](https://www.zero.xyz/c/kair-os-trade-x402-service-recommender-d576735a/llms.txt): $0.005/call via x402. Recommends up to five relevant Base USDC x402-priced API services matching a task description and per-call budget, drawn from a partially refreshed Coinbase/PayAI catalogue with live 402 price observations.

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

- [Zero catalog index](https://www.zero.xyz/llms.txt)