Current Base gas prices and a simple-transfer cost estimate for transaction planning.

Check an ERC-20 spending allowance on Base; flags unlimited approvals.

Inspect and lint any x402 paid endpoint: decodes the 402 payment challenge, names the network and asset, and flags misconfigurations including missing Bazaar discovery metadata.

Verify an x402 settlement: confirm a Base transaction succeeded, decode its USDC transfers, and optionally assert the receiving wallet and amount.

USD price for major tokens by symbol or any Base ERC-20 by contract address, with source failover.

Check the status of a Base transaction: success/reverted/pending, confirmations, gas used, and explorer link — settlement verification for agents and payment flows.

Content-safety classification (Llama Guard): safe/unsafe plus category codes.

Text embeddings for semantic search and RAG: one vector per call, 1024 dimensions.

Look up all x402 Bazaar resources listed under a merchant payTo wallet.

US macro intelligence — Fed rate, CPI/Core PCE YoY, yield curve, M2 money supply, GDP, VIX, crypto Fear & Greed, AI macro regime narrative

Full liquidation report — all assets, long/short breakdown, hot zones

Citation lookup and reference list for a paper. Given a DOI, arXiv id, OpenAlex id, or PMID, returns its references (the works it cites) and its cited-by list (recent works that cite it), plus full metadata and citation count — for bibliography building and citation lookup. Keyless via OpenAlex and Semantic Scholar.

On-chain intelligence — whale transfers trending tokens DeFi TVL on Base and Ethereum

Latest US stock OHLCV quote from Stooq by ticker symbol.

x402-native person discovery for autonomous agents. Given search criteria (title, seniority, company, industry, or location) instead of a known name, returns a list of matching people with title, seniority, department, decision-maker status, LinkedIn URL, and location. Structured JSON. Paid per request via x402.

Word, sentence, and paragraph counts, reading time, and readability score for text.

Composite due-diligence brief: vet + business + pulse + market spikes header for one payTo. Paid upgrade after /v1/vet — replaces separate pulse/business Bazaar rows.

Composite Robinhood x402 brief: chain-wide catalog lag + per-address fingerprint in one call. Paid upgrade after ylk-robinhood-lag — replaces standalone hood-fingerprint on the Bazaar shelf.

Profile of a Telegram channel: title, description, subscribers, category, country, language, links and verified flag. Vet a channel or enrich a dataset in one call.

Full OI report — all assets, all exchanges, 5-min delta