# Services from api.zerion.io on Zero

> api.zerion.io serves 40 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/api.zerion.io
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/api.zerion.io/health.json

## Services

- [Zerion API - Wallet Portfolio](https://www.zero.xyz/c/zerion-api-wallet-portfolio-93d0692b/llms.txt): $0.01/call via x402. Returns the total USD portfolio value and asset breakdown for a given EVM or Solana wallet address across 40+ chains.
- [Zerion API - Wallet NFT Positions](https://www.zero.xyz/c/zerion-api-wallet-nft-positions-00f7ae19/llms.txt): $0.01/call via x402. Fetches all NFT positions held by a given EVM or Solana wallet address across 40+ chains
- [Zerion Swap Offers](https://www.zero.xyz/c/zerion-swap-offers-a42dcd7b/llms.txt): $0.01/call via x402. Returns swap offers (quotes) for trading tokens across 40+ chains, comparing liquidity sources for a given input/output token pair and amount.
- [Zerion Wallet Positions](https://www.zero.xyz/c/zerion-wallet-positions-36e88b8e/llms.txt): $0.01/call via x402. Returns interpreted DeFi positions held by a wallet address across 40+ EVM chains and Solana
- [Zerion Wallet Positions](https://www.zero.xyz/c/zerion-wallet-positions-9ab42245/llms.txt): $0.01/call via x402. Fetches all DeFi and token positions held by a given wallet address across 40+ chains
- [Zerion Wallet Transactions Lookup](https://www.zero.xyz/c/zerion-wallet-transactions-lookup-e557aebe/llms.txt): $0.01/call via x402. Retrieves the full transaction history for a given EVM or Solana wallet address, with interpreted on-chain activity across 40+ chains.
- [Zerion Wallet Portfolio](https://www.zero.xyz/c/zerion-wallet-portfolio-d410410e/llms.txt): $0.01/call via x402. Fetches the aggregated DeFi portfolio for a given EVM or Solana wallet address, including total value and asset breakdown
- [Zerion API - Wallet Transaction Simulation](https://www.zero.xyz/c/zerion-api-wallet-transaction-simulation-c996c13f/llms.txt): $0.01/call via x402. Simulates a blockchain transaction for a given wallet and chain, returning predicted outcomes before execution
- [Zerion Swap Quotes](https://www.zero.xyz/c/zerion-swap-quotes-653979fb/llms.txt): $0.01/call via x402. Returns best-available swap quotes for exchanging one token for another across 40+ chains, including cross-chain swaps.
- [Zerion Wallet Portfolio Chart](https://www.zero.xyz/c/zerion-wallet-portfolio-chart-b9e0e6b7/llms.txt): $0.01/call via x402. Returns time-series chart data for a wallet's total portfolio value over a specified time period across 40+ chains and Solana
- [Zerion API - Wallet NFT Collections](https://www.zero.xyz/c/zerion-api-wallet-nft-collections-e7491c5f/llms.txt): $0.01/call via x402. Returns all NFT collections held by a given EVM or Solana wallet address, across 40+ chains.
- [Zerion API - Wallet Transactions](https://www.zero.xyz/c/zerion-api-wallet-transactions-c50b6792/llms.txt): $0.01/call via x402. Fetches the full interpreted transaction history for a given EVM or Solana wallet address across 40+ chains
- [Zerion Wallet PnL API](https://www.zero.xyz/c/zerion-wallet-pnl-api-8a499735/llms.txt): $0.01/call via x402. Returns profit and loss (PnL) data for a given EVM or Solana wallet address across 40+ chains
- [Zerion API - Wallet NFT Portfolio](https://www.zero.xyz/c/zerion-api-wallet-nft-portfolio-9884803f/llms.txt): $0.01/call via x402. Returns the aggregated NFT portfolio for a given EVM or Solana wallet address, including holdings across 40+ chains.
- [Zerion Gas Prices API](https://www.zero.xyz/c/zerion-gas-prices-api-0242dd9b/llms.txt): $0.01/call via x402. Retrieves current gas prices across multiple EVM chains and Solana, filterable by chain and gas type (classic, EIP-1559, optimistic).
- [Zerion API - Wallet Transaction Simulation](https://www.zero.xyz/c/zerion-api-wallet-transaction-simulation-c1d8f1d6/llms.txt): $0.01/call via x402. Simulates transactions for a given wallet address across 40+ EVM chains and Solana, returning interpreted simulation results before execution
- [Zerion Wallet NFT Positions](https://www.zero.xyz/c/zerion-wallet-nft-positions-cf8522fc/llms.txt): $0.01/call via x402. Retrieves all NFT positions held by a given wallet address across supported EVM and Solana chains
- [Zerion Wallet PnL](https://www.zero.xyz/c/zerion-wallet-pnl-5dc40d03/llms.txt): $0.01/call via x402. Returns profit and loss (PnL) data for a given EVM or Solana wallet address across DeFi positions
- [Zerion Fungible Token Lookup by Contract Address](https://www.zero.xyz/c/zerion-69c80211/llms.txt): $0.010000/call via x402. Look up detailed token/fungible asset metadata by its on-chain contract address implementation
- [Zerion Wallet Daily Chart](https://www.zero.xyz/c/zerion-wallet-daily-chart-448480db/llms.txt): $0.01/call via x402. Returns a day-period portfolio value chart for a given wallet address across DeFi and multi-chain assets
- [Zerion Fungibles Search & List](https://www.zero.xyz/c/zerion-f95b046f/llms.txt): $0.010000/call via x402. Search and list fungible tokens (ERC-20 and similar) across DeFi/Web3, with filtering and lookup capabilities
- [Zerion API - Fungible Asset Detail Lookup](https://www.zero.xyz/c/zerion-api-fungible-asset-detail-lookup-05434f8c/llms.txt): $0.01/call via x402. Retrieves detailed on-chain metadata and attributes for a specific fungible token by its Zerion fungible asset ID
- [Zerion - Fungible Token Price Chart by Implementation](https://www.zero.xyz/c/zerion-fungible-token-price-chart-by-implementation-40d8f4f8/llms.txt): $0.01/call via x402. Returns historical price chart data for a fungible token identified by its on-chain implementation address, over a specified time period.
- [Zerion API - Get NFT by ID](https://www.zero.xyz/c/zerion-api-get-nft-by-id-dfd0c498/llms.txt): $0.01/call via x402. Fetches detailed metadata and attributes for a single NFT identified by chain, contract address, and token ID
- [Zerion API - List Swappable Fungible Tokens](https://www.zero.xyz/c/zerion-api-list-swappable-fungible-tokens-6361133e/llms.txt): $0.01/call via x402. Returns the list of fungible tokens (with chain filtering) that are available as swap inputs or outputs on Zerion's cross-chain swap infrastructure.
- [Zerion - Fungible Token Price Chart](https://www.zero.xyz/c/zerion-fungible-token-price-chart-3bf5d1e5/llms.txt): $0.01/call via x402. Returns historical price chart data for a specific fungible token over a given time period
- [Zerion API - Chain Details Lookup](https://www.zero.xyz/c/zerion-api-chain-details-lookup-4de77d11/llms.txt): $0.01/call via x402. Retrieves metadata and details for a specific blockchain chain by chain ID from Zerion's multi-chain index
- [Zerion API - Update Transaction Subscription Chain IDs](https://www.zero.xyz/c/zerion-api-update-transaction-subscription-chain-ids-39b0bbba/llms.txt): $0.01/call via x402. Updates (patches) the list of chain IDs monitored by an existing transaction subscription
- [Zerion API - Get TX Subscription by ID](https://www.zero.xyz/c/zerion-api-get-tx-subscription-by-id-13f46b23/llms.txt): $0.01/call via x402. Retrieves the details of a specific transaction subscription by its subscription ID on Zerion's multi-chain wallet data platform.
- [Zerion API - Transaction Subscriptions List](https://www.zero.xyz/c/zerion-api-transaction-subscriptions-list-2ae38962/llms.txt): $0.01/call via x402. Lists active transaction subscriptions for a wallet across 40+ chains, filterable by chain ID.
- [Zerion API - TX Subscription Wallets Lookup](https://www.zero.xyz/c/zerion-api-tx-subscription-wallets-lookup-c3ec49bf/llms.txt): $0.01/call via x402. Retrieves the list of wallets associated with a specific transaction subscription on Zerion
- [Zerion API - Enable TX Subscription](https://www.zero.xyz/c/zerion-api-enable-tx-subscription-15373922/llms.txt): $0.01/call via x402. Enables (activates) a previously created transaction subscription by its subscription ID, resuming event delivery for on-chain transaction monitoring.
- [Zerion List Supported Chains](https://www.zero.xyz/c/zerion-7bb5dfe6/llms.txt): $0.01/call via x402. Returns a list of all blockchain networks supported by the Zerion DeFi data platform
- [Zerion DeFi Protocol Lister](https://www.zero.xyz/c/zerion-fae84cbe/llms.txt): $0.01/call via x402. Lists DeFi protocols (dApps) available on Zerion, optionally filtered by protocol type such as lending
- [Zerion NFT Search and List](https://www.zero.xyz/c/zerion-91ff6233/llms.txt): $0.010000/call via x402. Search and list NFTs across wallets and collections on the Zerion DeFi platform
- [Zerion API - TX Subscription Wallet Count](https://www.zero.xyz/c/zerion-api-tx-subscription-wallet-count-6480c18a/llms.txt): $0.01/call via x402. Returns the count of wallets associated with a specific transaction subscription on Zerion.
- [Zerion API - Update TX Subscription Callback URL](https://www.zero.xyz/c/zerion-api-update-tx-subscription-callback-url-617d7bf4/llms.txt): $0.01/call via x402. Updates the callback URL for an existing blockchain transaction subscription by subscription ID
- [Zerion API - DApp Details Lookup](https://www.zero.xyz/c/zerion-api-dapp-details-lookup-8362ced0/llms.txt): $0.01/call via x402. Retrieves detailed information about a specific decentralized application (DApp) by its identifier from Zerion's multi-chain data platform.
- [Zerion API - Disable TX Subscription](https://www.zero.xyz/c/zerion-api-disable-tx-subscription-7c861584/llms.txt): $0.01/call via x402. Disables an active transaction subscription by its subscription ID, stopping further notifications or monitoring for that subscription.
- [Zerion Wallet Simulation Signature Verifier](https://www.zero.xyz/c/zerion-wallet-simulation-signature-verifier-e4b1d576/llms.txt): $0.01/call via x402. Validates and processes EIP-712 typed data signatures for wallet simulation on the Zerion platform

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

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