# Services from x402.chainquery.com on Zero

> x402.chainquery.com serves 54 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/x402.chainquery.com
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/x402.chainquery.com/health.json

## Services

- [chainquery Bitcoin getbestblockhash RPC](https://www.zero.xyz/c/chainquery-bitcoin-getbestblockhash-rpc-14000189/llms.txt): $0.005/call via x402. Returns the block hash of the current Bitcoin chain tip (best block) from a chainquery-operated full node via pay-per-call x402.
- [chainquery Bitcoin getblockcount RPC](https://www.zero.xyz/c/chainquery-bitcoin-getblockcount-rpc-71f1a24e/llms.txt): $0.005/call via x402. Returns the current block height (block count) of the Bitcoin chain tip from chainquery's independent full node via pay-per-call x402 API
- [chainquery getnetworkhashps – Bitcoin Network Hash Rate](https://www.zero.xyz/c/chainquery-getnetworkhashps-bitcoin-network-hash-rate-1a49fd85/llms.txt): $0.005/call via x402. Returns the estimated Bitcoin network hash rate (hashes per second) over a configurable window of blocks, sourced from chainquery's independent full node via Bitcoin Core getnetworkhashps RPC.
- [chainquery gettxspendingprevout](https://www.zero.xyz/c/chainquery-gettxspendingprevout-fcdc168a/llms.txt): $0.01/call via x402. Checks whether given Bitcoin transaction outputs (UTXOs) are currently being spent by any unconfirmed mempool transaction
- [chainquery getmempoolentry](https://www.zero.xyz/c/chainquery-getmempoolentry-f160422d/llms.txt): $0.005/call via x402. Returns mempool entry details for a specific unconfirmed Bitcoin transaction, including fees, size, and ancestor/descendant counts, via chainquery's independent Bitcoin Core full node.
- [chainquery decoderawtransaction](https://www.zero.xyz/c/chainquery-decoderawtransaction-b28ccfff/llms.txt): $0.005/call via x402. Decodes a raw Bitcoin transaction hex string into a structured JSON object with inputs, outputs, txid, version, and locktime via Bitcoin Core RPC.
- [chainquery getchaintips – Bitcoin Chain Tips via x402](https://www.zero.xyz/c/chainquery-getchaintips-bitcoin-chain-tips-via-x402-a67dbc82/llms.txt): $0.005/call via x402. Returns all known Bitcoin chain tips with their height and branch status from an independent Bitcoin Core full node, paid per call via x402.
- [chainquery estimatesmartfee — Bitcoin fee rate estimation via x402](https://www.zero.xyz/c/chainquery-estimatesmartfee-bitcoin-fee-rate-estimation-via-x402-7379330d/llms.txt): $0.005/call via x402. Returns the estimated fee rate (BTC/kvB) needed to confirm a Bitcoin transaction within a target number of blocks, via Bitcoin Core's estimatesmartfee RPC on chainquery's independent full node.
- [chainquery getrawtransaction](https://www.zero.xyz/c/chainquery-getrawtransaction-44cb6d71/llms.txt): $0.01/call via x402. Fetches a raw Bitcoin transaction by txid from chainquery's independent full node, returning hex or decoded JSON via Bitcoin Core getrawtransaction RPC
- [chainquery Bitcoin getmempoolinfo](https://www.zero.xyz/c/chainquery-bitcoin-getmempoolinfo-0824b2f5/llms.txt): $0.005/call via x402. Returns Bitcoin mempool statistics (transaction count, size, fees) from chainquery's independent Bitcoin Core full node via pay-per-call x402.
- [chainquery getblockchaininfo – Bitcoin Chain State via x402](https://www.zero.xyz/c/chainquery-getblockchaininfo-bitcoin-chain-state-via-x402-6c47a216/llms.txt): $0.005/call via x402. Returns current Bitcoin blockchain state (height, best block hash, difficulty, sync progress, disk size) from chainquery's independent full node using Bitcoin Core's getblockchaininfo RPC.
- [chainquery getrawmempool – Bitcoin Mempool Lookup](https://www.zero.xyz/c/chainquery-getrawmempool-bitcoin-mempool-lookup-a650b808/llms.txt): $0.02/call via x402. Returns all transaction IDs currently in the Bitcoin mempool, or full verbose entries, via Bitcoin Core RPC from chainquery's independent full node.
- [chainquery Bitcoin getblock RPC](https://www.zero.xyz/c/chainquery-bitcoin-getblock-rpc-c8380ab8/llms.txt): $0.02/call via x402. Fetches a full Bitcoin block by hash from chainquery's independent Bitcoin Core full node, returning header, transaction IDs, and optionally fully decoded transactions.
- [chainquery gettxout — Bitcoin UTXO Lookup](https://www.zero.xyz/c/chainquery-gettxout-bitcoin-utxo-lookup-2af82468/llms.txt): $0.005/call via x402. Fetches details of an unspent transaction output (UTXO) by txid and vout index from a Bitcoin Core full node via x402 pay-per-call
- [Bitcoin Core verifymessage RPC via x402](https://www.zero.xyz/c/bitcoin-core-verifymessage-rpc-via-x402-7bedf78d/llms.txt): $0.005/call via x402. Verifies a message signed by the private key behind a Bitcoin address using Bitcoin Core's verifymessage RPC, accessed pay-per-call with no API key.
- [chainquery Bitcoin getnetworkinfo RPC](https://www.zero.xyz/c/chainquery-bitcoin-getnetworkinfo-rpc-e41f101c/llms.txt): $0.005/call via x402. Returns Bitcoin Core network info (version, subversion, peer connections, relay fee) from chainquery's independent full node via pay-per-call x402 protocol
- [chainquery Bitcoin Core listbanned RPC](https://www.zero.xyz/c/chainquery-bitcoin-core-listbanned-rpc-42975b84/llms.txt): $0.005/call via x402. Returns the list of currently banned peer IPs and subnets from chainquery's independent Bitcoin Core full node via pay-per-call x402.
- [chainquery Bitcoin validateaddress RPC](https://www.zero.xyz/c/chainquery-bitcoin-validateaddress-rpc-a0933576/llms.txt): $0.005/call via x402. Validates a Bitcoin address and returns its type, validity, and scriptPubKey via Bitcoin Core's validateaddress RPC, pay-per-call over x402
- [chainquery Bitcoin Core getmemoryinfo RPC](https://www.zero.xyz/c/chainquery-bitcoin-core-getmemoryinfo-rpc-cd1c3f4f/llms.txt): $0.005/call via x402. Returns Bitcoin Core node memory usage statistics via a pay-per-call x402 RPC call to getmemoryinfo
- [chainquery decodepsbt — Bitcoin Core PSBT Decoder](https://www.zero.xyz/c/chainquery-decodepsbt-bitcoin-core-psbt-decoder-26f74f82/llms.txt): $0.005/call via x402. Decodes a Base64-encoded PSBT (Partially Signed Bitcoin Transaction) into a human-readable JSON object with inputs, outputs, scripts, and metadata via Bitcoin Core's decodepsbt RPC
- [chainquery Bitcoin getmininginfo RPC](https://www.zero.xyz/c/chainquery-bitcoin-getmininginfo-rpc-50562474/llms.txt): $0.005/call via x402. Returns Bitcoin mining info (difficulty, network hashrate, mempool size, chain) from an independent Bitcoin Core full node via pay-per-call x402 micropayment
- [chainquery Bitcoin getnettotals RPC](https://www.zero.xyz/c/chainquery-bitcoin-getnettotals-rpc-f3a88a98/llms.txt): $0.005/call via x402. Returns cumulative Bitcoin network traffic totals (bytes sent and received) from chainquery's independent Bitcoin Core full node via pay-per-call x402 protocol.
- [chainquery Bitcoin Core getaddednodeinfo](https://www.zero.xyz/c/chainquery-bitcoin-core-getaddednodeinfo-e934c604/llms.txt): $0.005/call via x402. Returns status information about manually added peer nodes from chainquery's independent Bitcoin full node via Bitcoin Core's getaddednodeinfo RPC.
- [chainquery analyzepsbt — Bitcoin PSBT Analyzer](https://www.zero.xyz/c/chainquery-analyzepsbt-bitcoin-psbt-analyzer-2054d8a8/llms.txt): $0.005/call via x402. Analyzes a Partially Signed Bitcoin Transaction (PSBT) to report per-input completeness, missing fields, next signing role, and estimated fee via Bitcoin Core's analyzepsbt RPC.
- [chainquery combinerawtransaction](https://www.zero.xyz/c/chainquery-combinerawtransaction-ee7e6b96/llms.txt): $0.005/call via x402. Combines multiple partially-signed raw Bitcoin transactions into a single fully-signed transaction using Bitcoin Core's combinerawtransaction RPC
- [chainquery createmultisig](https://www.zero.xyz/c/chainquery-createmultisig-cf39ad49/llms.txt): $0.005/call via x402. Builds an m-of-n multisig Bitcoin address and its redeem script from a set of public keys via Bitcoin Core's createmultisig RPC
- [chainquery createpsbt — Bitcoin Core Create Unsigned PSBT](https://www.zero.xyz/c/chainquery-createpsbt-bitcoin-core-create-unsigned-psbt-dd0d18ad/llms.txt): $0.005/call via x402. Creates an unsigned Partially Signed Bitcoin Transaction (PSBT) from specified inputs and outputs via Bitcoin Core's createpsbt RPC
- [chainquery Bitcoin decodescript RPC](https://www.zero.xyz/c/chainquery-bitcoin-decodescript-rpc-20bd2d1d/llms.txt): $0.005/call via x402. Decodes a Bitcoin hex-encoded script into its assembly representation, type classification, and associated addresses
- [chainquery Bitcoin RPC – deriveaddresses](https://www.zero.xyz/c/chainquery-bitcoin-rpc-deriveaddresses-7c5771c0/llms.txt): $0.005/call via x402. Derives Bitcoin addresses from an output descriptor, optionally over a range, using Bitcoin Core's deriveaddresses RPC via pay-per-call x402 micropayment.
- [chainquery estimaterawfee](https://www.zero.xyz/c/chainquery-estimaterawfee-2524becc/llms.txt): $0.005/call via x402. Returns raw fee estimation data from a Bitcoin Core node for a given confirmation target, via pay-per-call x402 protocol.
- [chainquery getblockhash](https://www.zero.xyz/c/chainquery-getblockhash-8fc129b8/llms.txt): $0.005/call via x402. Returns the block hash for a Bitcoin block at a given height using Bitcoin Core's getblockhash RPC, served from chainquery's independent full node via x402 pay-per-call.
- [chainquery getdeploymentinfo](https://www.zero.xyz/c/chainquery-getdeploymentinfo-633812ed/llms.txt): $0.005/call via x402. Returns Bitcoin soft-fork deployment and activation status from an independent Bitcoin Core full node via pay-per-call RPC over x402.
- [Bitcoin Core getdescriptorinfo via x402](https://www.zero.xyz/c/bitcoin-core-getdescriptorinfo-via-x402-67bd3f2c/llms.txt): $0.005/call via x402. Analyzes a Bitcoin output descriptor and returns its checksum and normalized (canonical) form using Bitcoin Core RPC
- [chainquery Bitcoin getdifficulty RPC](https://www.zero.xyz/c/chainquery-bitcoin-getdifficulty-rpc-6a404c0d/llms.txt): $0.005/call via x402. Returns the current proof-of-work difficulty from Bitcoin Core via a pay-per-call x402 endpoint, no API key required.
- [chainquery Bitcoin Core Uptime](https://www.zero.xyz/c/chainquery-bitcoin-core-uptime-7b218764/llms.txt): $0.005/call via x402. Returns the number of seconds the chainquery Bitcoin Core full node has been running (uptime).
- [chainquery Bitcoin getblockheader RPC](https://www.zero.xyz/c/chainquery-bitcoin-getblockheader-rpc-e647cea3/llms.txt): $0.005/call via x402. Fetches block header fields (version, merkle root, timestamp, bits, nonce, previous hash) for a given Bitcoin block hash via Bitcoin Core's getblockheader RPC, pay-per-call over x402.
- [chainquery utxoupdatepsbt – Fill PSBT UTXOs via Bitcoin Core](https://www.zero.xyz/c/chainquery-utxoupdatepsbt-fill-psbt-utxos-via-bitcoin-core-0b88d3cb/llms.txt): $0.01/call via x402. Fills missing UTXO and script data in a PSBT by querying the live UTXO set on chainquery's independent Bitcoin full node (Bitcoin Core utxoupdatepsbt RPC).
- [chainquery Bitcoin Core RPC Help](https://www.zero.xyz/c/chainquery-bitcoin-core-rpc-help-892a97a4/llms.txt): $0.005/call via x402. Returns a list of all available Bitcoin Core RPC commands or detailed help text for a specific command from chainquery's independent full node
- [Bitcoin Core combinepsbt — Merge Multiple PSBTs](https://www.zero.xyz/c/bitcoin-core-combinepsbt-merge-multiple-psbts-acee7ecc/llms.txt): $0.005/call via x402. Merges multiple Partially Signed Bitcoin Transactions (PSBTs) for the same underlying transaction into a single combined PSBT
- [chainquery Bitcoin Core getrpcinfo](https://www.zero.xyz/c/chainquery-bitcoin-core-getrpcinfo-00431a05/llms.txt): $0.005/call via x402. Returns information about active RPC commands and current server state from a Bitcoin Core full node via pay-per-call x402 protocol
- [chainquery Bitcoin Core getpeerinfo](https://www.zero.xyz/c/chainquery-bitcoin-core-getpeerinfo-a89e1063/llms.txt): $0.01/call via x402. Returns per-peer connection details for every node currently connected to chainquery's independent Bitcoin full node via Bitcoin Core getpeerinfo RPC.
- [chainquery Bitcoin Core getindexinfo RPC](https://www.zero.xyz/c/chainquery-bitcoin-core-getindexinfo-rpc-ab1d2460/llms.txt): $0.005/call via x402. Returns the status of optional Bitcoin Core node indexes (e.g. txindex, blockfilterindex, coinstatsindex) from a full Bitcoin node, pay-per-call via x402.
- [chainquery createrawtransaction](https://www.zero.xyz/c/chainquery-createrawtransaction-0debbbfc/llms.txt): $0.005/call via x402. Builds an unsigned raw Bitcoin transaction hex from specified inputs and outputs via Bitcoin Core's createrawtransaction RPC, pay-per-call over x402.
- [chainquery getnodeaddresses](https://www.zero.xyz/c/chainquery-getnodeaddresses-3663552b/llms.txt): $0.005/call via x402. Returns known peer addresses from the Bitcoin Core node's address manager via pay-per-call RPC
- [chainquery verifytxoutproof — Bitcoin Merkle Proof Verifier](https://www.zero.xyz/c/chainquery-verifytxoutproof-bitcoin-merkle-proof-verifier-c70776ae/llms.txt): $0.01/call via x402. Verifies a merkle proof that a specific transaction is included in a Bitcoin block, using chainquery's independent full node via Bitcoin Core's verifytxoutproof RPC
- [chainquery Bitcoin getconnectioncount RPC](https://www.zero.xyz/c/chainquery-bitcoin-getconnectioncount-rpc-775be5fb/llms.txt): $0.005/call via x402. Returns the number of active peer connections to chainquery's independent Bitcoin full node via pay-per-call x402 protocol
- [chainquery getmempoolancestors](https://www.zero.xyz/c/chainquery-getmempoolancestors-e64f21fb/llms.txt): $0.01/call via x402. Returns in-mempool ancestor transactions (txids or full entries) for a given unconfirmed Bitcoin transaction via Bitcoin Core RPC
- [chainquery converttopsbt](https://www.zero.xyz/c/chainquery-converttopsbt-6fe549e9/llms.txt): $0.005/call via x402. Converts a raw Bitcoin transaction hex string into a Partially Signed Bitcoin Transaction (PSBT) via Bitcoin Core's converttopsbt RPC
- [chainquery finalizepsbt](https://www.zero.xyz/c/chainquery-finalizepsbt-4f6d53c0/llms.txt): $0.005/call via x402. Finalizes a PSBT (Partially Signed Bitcoin Transaction) and returns the network-ready raw transaction hex via Bitcoin Core RPC, pay-per-call over x402.
- [chainquery Bitcoin Core getzmqnotifications](https://www.zero.xyz/c/chainquery-bitcoin-core-getzmqnotifications-b70e7e33/llms.txt): $0.005/call via x402. Returns the active ZMQ notification endpoints configured on chainquery's independent Bitcoin full node
- [chainquery testmempoolaccept](https://www.zero.xyz/c/chainquery-testmempoolaccept-4070ae62/llms.txt): $0.02/call via x402. Tests whether raw Bitcoin transactions would be accepted to the mempool without actually broadcasting them, via a chainquery full node.
- [chainquery getmempooldescendants](https://www.zero.xyz/c/chainquery-getmempooldescendants-8892aafd/llms.txt): $0.01/call via x402. Returns all in-mempool descendant transactions of a given transaction using Bitcoin Core's getmempooldescendants RPC, via pay-per-call x402 micropayment.
- [chainquery joinpsbts — Bitcoin Core PSBT Combiner](https://www.zero.xyz/c/chainquery-joinpsbts-bitcoin-core-psbt-combiner-b43fcff9/llms.txt): $0.005/call via x402. Joins multiple distinct Partially Signed Bitcoin Transactions (PSBTs) into a single combined PSBT using Bitcoin Core's joinpsbts RPC, served pay-per-call over x402.
- [chainquery Bitcoin Core Ping (x402)](https://www.zero.xyz/c/chainquery-bitcoin-core-ping-x402-3770b138/llms.txt): $0.005/call via x402. Queues a ping to all connected Bitcoin peers via a Bitcoin Core full node, measuring round-trip network latency

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

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