Settlement/value date: T+n business days across national statutory calendars (intersected), with the market cycle cited to its primary source and a per-day trail

Checks Sourcify for a Base contract's verification status and returns its ABI as function/event name lists + item count (full or partial match). No API key required.

Pass a comma-separated list of up to 25 addresses and get an OFAC sanctions result for each, plus the flagged subset. Built for compliance agents vetting whole counterparty lists in one call.

Computes the 4-byte selector for a function signature (e.g. transfer(address,uint256) → 0xa9059cbb). The inverse of the decoder — useful for agents building or matching calldata.

owner-powers says the owner CAN mint; this says whether they ARE, and how fast. A token can advertise fixed supply and quietly inflate it, diluting holders before the dump. Sums zero-address mints and burns over a window (CDP SQL) against live on-chain totalSupply, annualised. Verdict from fixed_in_window / deflationary to hyperinflation. Honest: bridges, staking and LP programs mint legitimately — flags the RATE, not intent. Not financial advice.

"Top holder owns 18%" means nothing without: 18% of what, against how deep a pool. Values the largest live holders' bags (GoPlus % × Base supply × price; pools, lending, bridges, vaults, lockers, burn excluded; exchanges reported apart) and dumps them through every Base pool the token is in, constant-product. Impact if the top holder and top 3 exit; verdict resilient → exit_trap. USD stablecoins: not_applicable (see stablecoin-peg). Heuristic; not financial advice.

Not price momentum — ADOPTION. token-age tells you when a token was born; holder-distribution is a snapshot. Neither shows the TRAJECTORY. A token can pass every static check and still bleed users week over week — what a human sees watching for days, an agent can't. Reads weekly transfer counts and distinct participants over the last 28 days and calls it: accelerating, steady, cooling, dying, or low_activity. Activity ≠ price; pair with wash-trading. Not financial advice.

Randomness for agents: flip coins, roll dice, draw numbers in a range, pick from a list or shuffle it. Cryptographically secure by default; with verificable=true it is derived from the latest finalized Ethereum block hash and your seed, so anyone can verify the result.

Year-on-year change in actual rents for housing (HICP component) for any European country, the EU or the euro area; without a country, a ranking. Official Eurostat data.

Forward + reverse Basename resolution read from the Base L2 Resolver: turn jesse.base.eth into an address, or an address into its primary Basename. No API key required.

🆕 Resolves the complete Base identity behind an address or Basename: resolved address, avatar, description, website and social handles (X/Twitter, GitHub, Farcaster, Discord) read from Base's L2 Resolver text records. Lets an agent turn a counterparty address into a real profile — beyond just the name. Complements address-trust (verification) with the human context.

A quote shows today's price; it does NOT tell you a $5k buy into a $20k pool pays ~20% more. This takes the token's deepest Base pool, treats it as constant-product (Uniswap-V2 / Aerodrome volatile) and computes the exact x*y=k price impact for your USD size. Conservative — concentrated-liquidity pools usually do better. Also returns the largest size under 1% and 3% impact. Pass address= and size= (USD). An estimate; confirm with swap-route. Not financial advice.

Use when a trading agent wants one number for "will this Base token rug?": a deterministic 0-100 rug-pull probability from security flags (honeypot, tax, owner powers), holder concentration, LP lock and liquidity depth, with the exact signals that drove it and the sources that did not answer. Higher = riskier; a missing feed reads unknown, never low.

Live Base chain snapshot: latest block, base fee + priority fee (Gwei), current ETH price, and the estimated USD cost of a simple ETH transfer. For agents timing or budgeting transactions.

EOA vs contract, ETH + USDC balance, transaction count and activity level — straight from Base RPC. Useful for counterparty and wallet checks.

🆕 Live — B20 is Base's native precompile token standard, and unlike ERC-20 a B20 issuer can freeze holders (Policy Registry) and even SEIZE your balance (burnBlocked) at the protocol level. This reads those powers — seizable, freezable, paused, rebase, uncapped-mint — into one hold/caution/avoid verdict, and separates a real tokenized stock from one merely wearing an equity ticker by reading the transfer-policy admin on chain, not a list: all 13 Coinbase equities, and the next on day one.

Complete ERC-20 portfolio for a Base address — every non-zero token with balance, metadata and live USD value, plus a total. Token discovery via CDP Data API (Coinbase) with Alchemy fallback; USD from DexScreener.

Complete token portfolio for a Base address with USD values: every ERC-20 the wallet holds, priced from live DEX liquidity, plus native ETH — sorted by value with a total. Holdings nobody quotes are listed and counted separately rather than silently valued at zero.

Wallet age in days, first & last activity timestamps, and outgoing transaction count for any Base address — read straight from the Base archive, not a 30-day feed, so it dates wallets of any age. Counts and last-activity cover what the wallet SENT; inbound transfers don't raise the nonce and aren't counted. Built for sybil screening and counterparty trust checks.

🆕 One block on Base — height, hash, parent, timestamp and age in seconds, transaction count, gas used against the limit, and the base fee in gwei. Takes a block number, a 0x… block hash, or latest / finalized / safe / earliest. A block that isn't mined yet answers found:false with the reason rather than an error. Raw chain data, no interpretation.