Trivia Daily knowledge challenge — answer one deterministically selected and shuffled question from a curated local set.

Strict Solidity ABI calldata decoder — decode canonical EVM smart-contract function calls or typed values, verify selectors, and reject ambiguous offsets or padding.

CREATE2 deterministic contract address calculator — derive the EIP-1014 EVM deployment address, preimage, hashes, and EIP-55 checksum offline without RPC.

Solidity ABI calldata encoder — encode canonical typed values for an EVM smart-contract function call, with an optional selector and exact 256-bit integers.

Shortest Path daily graph — find the unique minimum-weight route in a deterministic directed or undirected graph.

Domain enrich for agents: live DNS (MX/SPF/DMARC/A) + HTTPS trust score. $0.005 keyless Base USDC. ?domain=stripe.com

Historical DeFi TVL across all chains from DefiLlama — aggregate time series (excludes liquid staking and double counting).

Domain Health Check API. Check domain DNS, MX, SPF, DMARC, and email configuration health and receive a structured JSON score with issues and recommendations. Useful for agents, developers, email deliverability checks, domain diagnostics, infrastructure investigation, and security workflows. Paid per call via x402.

Normalizes whitespace, inserts a caller-supplied visible marker after every selected number of words and at the end of a final partial interval, then reports source and output digests. This deliberately visible text annotation is not a robust image, audio or cryptographic watermark and can be removed by editing.

Gridlock daily maze — find an optimal orthogonal route through a deterministic bounded obstacle grid.

Stablecoin detail by DefiLlama — circulating-supply history and per-chain distribution for one stablecoin by id.

Historical stablecoin market cap on one chain from DefiLlama — circulating-supply time series for a single chain.

Token price lookup. Pass coin identifiers as `/v1/defillama/prices/{coins}` (e.g. `coingecko:bitcoin`, `ethereum:0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2`). Supports comma-separated lists.

Worldwide forward geocoding for agents. Convert an address, landmark, city, postcode, or place name into latitude and longitude with normalized address components and confidence metadata.

Onchain loyalty platform on Base Network. Businesses launch branded rewards in minutes, customers earn real value with every purchase, and AI agents automate the rest via REST and MCP. Free plan mints up to 1,000 tokens per month. On the paid retry also send x-api-key: rwk_.... A payment without a live key is not charged. The call is scoped to the wallet behind that key. 16 skill guides at loyalspark.online/.well-known/skills/index.md.

Stablecoin market cap by chain from DefiLlama — current total stablecoin circulating supply per chain.

Market Value to Realized Value Ratio (MVRV) — Market Value to Realized Value (MVRV) is the ratio between market cap and realized cap. Data by Glassnode.

Complete real-time cryptocurrency price snapshot from the FTSO Yggdrassil value provider

Latest institutional holdings (SEC 13F-HR) for any hedge fund or asset manager by ticker or CIK: top portfolio positions with issuer name, CUSIP, shares, market value in USD, and percent-of-portfolio coverage. Resolves ticker to CIK via SEC's official index. Sourced live from data.sec.gov.

Historical token prices by DefiLlama — token price(s) at a given unix timestamp by chain:address or coingecko:id.