Is this transaction safe to sign? Simulate an unsigned Base transaction against current chain state and get one verdict back: what the call does, the gas it burns, which balances and allowances move, and whether it hides an unlimited approval or a target that changed under you. Returns allow, review or block with reason codes, evidence and the block it stops being valid. Never cached, shared or resold: your unsigned transaction stays private to the wallet that paid for it.
# 1. Ask the endpoint what it costs (no payment, no wallet needed): curl -i -X POST 'https://www.tereno.xyz/api/v1/capabilities/transaction.intent.guard/invoke' # -> HTTP/1.1 402 Payment Required # the response carries the price, asset and pay-to address. # 2. Pay and retry with any x402 client: npx x402-fetch -X POST 'https://www.tereno.xyz/api/v1/capabilities/transaction.intent.guard/invoke'
Endpoint: https://www.tereno.xyz/api/v1/capabilities/transaction.intent.guard/invoke. Operated by www.tereno.xyz, not by Animica. Price and availability were correct at the last probe on 2026-09-02 and are set by the operator, who may change them.
What is the current state of Base? Latest block number, timestamp, base fee and suggested gas fees in a single cheap call with no parameters — the fastest way t…
Did this token's contract change under you? Compare a Base contract against Tereno's previous observation and catch a silent proxy upgrade, an admin swap, a byt…
Is this Base contract safe to interact with? Detect whether an address has no code, is an upgradeable proxy, or is currently paused, and get a bounded allow, re…
What standard does this Base contract implement? Detect ERC-20, ERC-721, ERC-1155 and ERC-165 support plus EIP-1967 proxy control slots in one cheap bounded che…
Can this public Tereno artifact be reused? Return a typed provenance envelope with source capability, field paths, validity window and exact recomputation input…
Was the economic condition satisfied? Return a recomputed verdict on a published Tereno obligation, with the receipt bytes, the challenge count and the inputs t…
What token is this? Read a Base token's name, symbol, decimals and total supply in one cheap typed call, with block-level freshness and explicit limitations. Id…
Convert a public web page into bounded, LLM-ready Markdown with resolved links, citations and a SHA-256 content-addressed artifact any agent can independently r…
Publish a deterministic claim about a Base proxy and let the market try to break it. You assert that a contract's implementation slot held one address across a …