higgsfield.app

A Base block read live from the chain: timestamp, transaction count, base fee, gas used and limit, miner. Pass ?n=<number> or omit for the latest block. No third-party API, no cache.

A Base block read live from the chain: timestamp, transaction count, base fee, gas used and limit, miner. Pass ?n=<number> or omit for the latest block. No third-party API, no cache.

Mizan report card for any of 2,107 x402 operators (18,629 endpoints on file) — this call: api.loyalspark.online. Liveness across surveys, latency, x402 conformance, price demanded at the door vs price advertised in the catalogue, and for endpoints Mizan actually paid for, whether they delivered, refused, or charged and delivered nothing — with the on-chain tx. Replace the last path segment with any host from GET /api/pagella.

ETH and USDC balance of any address on Base, read live from the chain (eth_getBalance + USDC balanceOf) at request time. Pass ?address=0x... . Returns raw and decimal values plus the block number the read was made at. No third-party API, no cache.

ETH and USDC balance of any address on Base, read live from the chain (eth_getBalance + USDC balanceOf) at request time. Pass ?address=0x... . Returns raw and decimal values plus the block number the read was made at. No third-party API, no cache.

Convert an amount of a crypto asset to USD using the live Chainlink price on Base. Pass ?from=ETH&amount=1.5 (assets: ETH, BTC, SOL, LINK, CBETH, AERO, EUR). Returns the rate used, the feed and its age. Oracle value, not a tradable quote. No cache.

Convert an amount of a crypto asset to USD using the live Chainlink price on Base. Pass ?from=ETH&amount=1.5 (assets: ETH, BTC, SOL, LINK, CBETH, AERO, EUR). Returns the rate used, the feed and its age. Oracle value, not a tradable quote. No cache.

Encode and decode text: base64, hex and URL-encoding, both directions. POST JSON {"text": "…", "op": "base64"} where op is base64|base64d|hex|hexd|url|urld. Pure computation, nothing stored, no cache.

Encode and decode text: base64, hex and URL-encoding, both directions. POST JSON {"text": "…", "op": "base64"} where op is base64|base64d|hex|hexd|url|urld. Pure computation, nothing stored, no cache.

ENS/basename name tools (pure computation): the namehash and labelhashes of a name, and its normalized form. POST JSON {"name": "alice.base.eth"}. Useful to build resolver calls yourself. Nothing stored, no cache.

ENS/basename name tools (pure computation): the namehash and labelhashes of a name, and its normalized form. POST JSON {"name": "alice.base.eth"}. Useful to build resolver calls yourself. Nothing stored, no cache.

Extract structured items from free text: email addresses, URLs, EVM addresses, transaction hashes, numbers, hashtags, plus word and line counts. POST JSON {"text": "..."} up to 20,000 characters. Pure computation, nothing leaves the server, no cache.

Extract structured items from free text: email addresses, URLs, EVM addresses, transaction hashes, numbers, hashtags, plus word and line counts. POST JSON {"text": "..."} up to 20,000 characters. Pure computation, nothing leaves the server, no cache.

Current gas conditions on Base, read live from a public node: gas price, base fee of the latest block, suggested priority fee, latest block number and timestamp. No parameters. No third-party API, no cache.

Current gas conditions on Base, read live from a public node: gas price, base fee of the latest block, suggested priority fee, latest block number and timestamp. No parameters. No third-party API, no cache.

Hash text: keccak-256 (Ethereum) and SHA-256, plus byte length. POST JSON {"text": "…"} up to 20,000 characters. Pure computation, nothing stored, no cache.

Hash text: keccak-256 (Ethereum) and SHA-256, plus byte length. POST JSON {"text": "…"} up to 20,000 characters. Pure computation, nothing stored, no cache.

Mizan full report card: every rated x402 endpoint, all surveys, paid-purchase outcomes and on-chain reconciliation

Post a message on a public notice board. POST JSON {"message": "..."} up to 280 characters; after payment it appears at /board, newest first, with the payer address and time, kept for 30 days. An effect, not a data lookup. No moderation beyond length; illegal content is removed.

Post a message on a public notice board. POST JSON {"message": "..."} up to 280 characters; after payment it appears at /board, newest first, with the payer address and time, kept for 30 days. An effect, not a data lookup. No moderation beyond length; illegal content is removed.

Live Chainlink price feed on Base, read from the oracle contract at request time: price, round id, last update and feed address. Pairs: ETH-USD, BTC-USD, SOL-USD, LINK-USD, CBETH-USD, AERO-USD, USDC-USD, EUR-USD. Pass ?pair=ETH-USD (default ETH-USD). No third-party API, no cache.

Live Chainlink price feed on Base, read from the oracle contract at request time: price, round id, last update and feed address. Pairs: ETH-USD, BTC-USD, SOL-USD, LINK-USD, CBETH-USD, AERO-USD, USDC-USD, EUR-USD. Pass ?pair=ETH-USD (default ETH-USD). No third-party API, no cache.

A simple, fully disclosed momentum signal from Chainlink on Base: current price versus the price 24 oracle rounds earlier, percent change, and a label (up / down / flat, threshold 0.5%). Pass ?pair=ETH-USD (default). The method is the whole product: no model, no secret sauce. Not financial advice.

A simple, fully disclosed momentum signal from Chainlink on Base: current price versus the price 24 oracle rounds earlier, percent change, and a label (up / down / flat, threshold 0.5%). Pass ?pair=ETH-USD (default). The method is the whole product: no model, no secret sauce. Not financial advice.

Status of a transaction on Base, read live: success or failure, block number, gas used, effective gas price, from, to. Pass ?hash=0x… (66 hex chars). Useful to confirm a payment or a call landed. No third-party API, no cache.

Status of a transaction on Base, read live: success or failure, block number, gas used, effective gas price, from, to. Pass ?hash=0x… (66 hex chars). Useful to confirm a payment or a call landed. No third-party API, no cache.

The chain clock on Base: latest block number and its timestamp, plus the node's current time and the lag between them. No parameters. No third-party API, no cache.

The chain clock on Base: latest block number and its timestamp, plus the node's current time and the lag between them. No parameters. No third-party API, no cache.

ERC-20 token metadata on Base, read live from the contract: name, symbol, decimals and total supply. Pass ?token=0x… (the token contract address). One eth_call set, no third-party API, no cache.

ERC-20 token metadata on Base, read live from the contract: name, symbol, decimals and total supply. Pass ?token=0x… (the token contract address). One eth_call set, no third-party API, no cache.

Recent USDC transfers in and out of any address on Base, read live from the chain (Transfer event logs over roughly the last ~600 blocks, about 20 minutes; the window narrows automatically if the public node rejects a wider range). Pass ?address=0x... . Returns up to 50 entries with block, tx hash, from, to, amount. No third-party API, no cache.

Recent USDC transfers in and out of any address on Base, read live from the chain (Transfer event logs over roughly the last ~600 blocks, about 20 minutes; the window narrows automatically if the public node rejects a wider range). Pass ?address=0x... . Returns up to 50 entries with block, tx hash, from, to, amount. No third-party API, no cache.

Is this Base address a contract or a wallet, and is it active? Live read: code size (contract vs EOA), transaction count (nonce), ETH and USDC balance, at the latest block. Pass ?address=0x... . Useful before paying an unknown payTo. No third-party API, no cache.

Is this Base address a contract or a wallet, and is it active? Live read: code size (contract vs EOA), transaction count (nonce), ETH and USDC balance, at the latest block. Pass ?address=0x... . Useful before paying an unknown payTo. No third-party API, no cache.