Activity Trend (Adoption)

Checks and payment terms on this page refer to the endpoint above. Other listed endpoints have not been checked individually.

Base URLhttps://402.com.tr/api/x402

• GET/ai-market-brief$0.05The zoom-out flagship: aggregates trending and newly-listed Base tokens, then AI writes a concise market brief — mood, highlights, new & notable launches, and cautions (fresh/unknown tokens flagged for rug risk). One call gives a trading agent market context instead of dozens of lookups.
• GET/bridge-route$0.02Agents bridge across chains and get it wrong — bad route, an untrusted bridge, fees that eat the transfer. Returns the best cross-chain route via the LiFi aggregator: which bridge, how much arrives, est. time, gas + bridge fees in USD, and the ready-to-send tx. Chains: ethereum, base, arbitrum, optimism, polygon. Tokens by symbol (USDC/USDT/ETH/WETH/DAI) or a 0x address + amountUnits. A quote — re-quote with your own sender before executing; we never hold keys. Not financial advice.
• GET/b20-announcements$0.03🆕 B20 Asset tokens can post on-chain announcements (Announcement: id, description, uri) — issuer notices, corporate actions, redemptions — a channel ERC-20 has no equivalent for. Reads a token's announcement feed (active vs ended) from CDP-indexed events. The issuer-communications primitive for agents holding tokenized/RWA B20 assets.
• GET/inflation-adjust$0.002Restate an amount from one year in another year's money, for any country in the World Bank consumer-price series (1960 onwards). Returns the adjusted amount, the cumulative inflation and both index values so the arithmetic is checkable. The series is annual and published with a lag, so a request for a year that does not exist yet answers with the newest one available and says which. For contract comparisons, historical pricing and long-running budgets.
• GET/rwa-dividend-feed$0.03The timeline corporate-actions doesn't give: PAST multiplier moves (splits, reverse splits, dividend accruals) from MultiplierUpdated events across the 80+ tokenized stocks, newest first — the record a cost-basis or NAV reconstruction needs — plus the queued ERC-8056 schedule, so one call gives history and what's next. A failed warehouse read reads as degraded, never 'none'. Not financial advice.
• GET/wallet-portfolio$0.02Complete 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.
• GET/onramp-coverage$0.02🆕 The feasibility check before you ask a user for money: which fiat-in and cash-out rails Coinbase actually runs in a country, the currencies and min/max limits for each, and how many assets across which networks. Distinguishes a country with card rails from one where crypto can only be transferred in — a difference most integrations discover only after a user fails. 122 countries covered.
• GET/agent-pay-gate$0.01A pre-payment gate for an agent about to send USDC. Screens the recipient (OFAC sanctions, Coinbase/Basename identity, wallet vs contract, fresh-address age) and escalates a fresh or anonymous recipient to STOP once the amount is material — a few cents to a new address is sampling, real size to one is the drain to avoid. Pass usd= for amount-aware guidance. One verdict (GO/REVIEW/STOP). Identity is not intent; not financial advice.
• GET/ens-resolve$0.01Forward + reverse ENS resolution on Ethereum mainnet: turn vitalik.eth into an address, or an address into its primary ENS name. Complements the Basename resolver for Base.
• GET/b20-peg$0.03🆕 A B20 Stablecoin's currency() is SELF-DECLARED — the standard verifies nothing. This is the missing check: declared peg vs actual DEX market price. 'Says USD, trades at $0.71' in one call: on_peg / depeg_warning / depegged / no_market (the peg is a pure claim with zero price discovery) / unverifiable_fx for non-USD pegs. Run before settling in any B20 stablecoin.
• GET/crypto-markets$0.01Live cross-asset market data: the top coins ranked by market cap with price, market cap, 24h change and volume (CoinGecko). The global snapshot an agent reads before trading — our other price tools are Base-token-address based; this is the whole market. Pass limit= (up to 100) and vs= (usd/eur/…). Not financial advice.
• GET/b20-access-type$0.03🆕 A B20 transfer policy is either a BLOCKLIST (allowed unless listed) or an ALLOWLIST (allowed ONLY if listed — a permissioned/whitelist token you can't even receive uninvited). b20-safety flags that a policy exists; this decodes its TYPE per scope (send/receive/execute/mint) — the difference between 'the issuer can block bad actors' and 'this is a permissioned RWA you can't hold uninvited'.
• GET/supply-inflation$0.03owner-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.
• GET/holders$0.02Top-10 holders with their %, holder count, concentration level (whale risk), and LP-lock %, from GoPlus. Lets agents judge how fairly a token is distributed before trading. No API key required.
• GET/gas-payer$0.05🆕 A smart account's gas can be paid by a PAYMASTER instead of the account itself — invisible to every 'does this wallet spend ETH' heuristic. Reads a wallet's UserOperationEvents across BOTH EntryPoints (v0.6 + v0.7): is it a smart account, its op count and success rate, and WHO sponsors its gas (self vs which paymaster, per-sponsor share). A fully-sponsored account is typically app- or agent-operated. wallet= required, days= optional (default 30, max 90). Not financial advice.
• GET/sanctions-batch$0.03Pass 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.
• GET/polymarket-odds$0.02🆕 Queries Polymarket's Gamma CLOB for active prediction markets. Resolves event outcome probabilities (Yes/No %), 24h volume, liquidity, and resolution date in one call. Designed for AI agents that need a real-world reality check before trading, hedging, or rebalancing treasury. Pass query= (e.g. 'fed', 'btc', 'kraken-ipo-in-2025'). A probabilistic signal, not financial advice.
• GET/tokenized-stock-price$0.03b20-safety says a tokenized stock is a real issuance; this says what it trades at ON-CHAIN and whether there's liquidity for size. Pass symbol=AAPL (or AAPLc) for the deepest Base pool's price, aggregate liquidity, 24h move and volume; omit symbol for the full directory. Covers all 82 — the roster is anchored on-chain by the policy admin, not a hand-kept list. This is the tradeable Base price, which can diverge from NYSE NAV. Not financial advice.
• GET/know-your-agent$0.04x402 proves payment; this answers whether the wallet should be recognised. Resolves a wallet's onchain identity — Coinbase verification (a KYC'd attestation), Basename, and an ERC-8004 registry entry when configured — and corroborates with its payment track record. One verdict: recognised / named / anonymous / unknown. The identity leg alongside x402-seller-check (endpoint) and agent-reputation (behaviour). Identity is not intent; a degraded read is 'unknown'. Not financial advice.
• GET/token-unlock$0.02Turns raw LP-lock data into a forward calendar: each unlock with its date, the % of LP it frees, the locker (UNCX / Team Finance labelled), and days away — flagging imminent unlocks (<30 days). An LP unlock is a scheduled price event: the moment a rug becomes possible. For agents managing open positions.
• GET/validity-build$0.01Make any signed Base transaction conditional (Cobalt validity tx): Base includes it only while your conditions hold. We validate the predicates and return the base_sendRawTransactionValidity request; we never touch funds or keys. Every request carries the deadline Base requires (at most 60 s out; set for you if omitted). Optional conditions: fromBlock, flashblockIndex (1-10), minNativeBalanceWei, or a storage predicate for price.
• GET/b20-memo$0.03🆕 B20 adds memos to transfers/mints/burns (transferWithMemo) for payment IDs, compliance tags and settlement correlation — a field ERC-20 has no equivalent for. Reads a token's on-chain Memo event history, optionally filtered by a specific memo (bytes32) or the caller wallet. The settlement-reconciliation primitive for agents paying over B20 stablecoins.
• GET/address-poisoning$0.03The address-poisoning attack: a scammer sends dust from an address whose first/last characters match one you really use, hoping you copy-paste the poisoned one. An auto-paying agent is the perfect victim. This compares the recipient against the head/tail of addresses the wallet actually transacts with and flags a look-alike that is NOT a real counterparty. Pass wallet= (yours) and to= (the recipient). A heuristic — verify the full address regardless. Not financial advice.
• GET/url-to-json$0.01One call replaces two: fetches the page, strips it to readable text, then returns exactly the fields you asked for as schema-enforced JSON (fields=price,author,published — up to 10). Add list=true to pull EVERY repeated record on the page (listings, table rows, search results) as an array — that mode costs $0.06, since it needs a much larger output budget. Built for agents that need a fact off a page, not a pile of HTML — no browser, no parser, no scraping code.
• GET/mev-guard$0.04Agents are the easiest MEV prey: predictable, public-mempool, a measured ~$50M/quarter tax. A sandwich only pays when a trade moves the pool enough to front-run (size vs pool depth). This returns an exposure read (low/elevated/high) and a protected-execution plan: a tight min-out, private/off-mempool inclusion (a Cobalt validity tx via validity-build), and splitting a large order into unattackable chunks. Pass tokenOut + amountUsd. Not financial advice.

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