Resolves on-chain USDC outflows to named merchants and listed services by matching transactions against historical Bazaar discovery catalogs. Formats: json ($0.10) or publication-ready PDF ($0.25).

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

Extract clean readable text and metadata from a public webpage and return structured JSON for AI agents.

Get structured metadata for a public webpage: title, description, canonical URL, Open Graph fields, favicon, and language.

Resolve DNS records using DNS-over-HTTPS and return structured JSON for infrastructure, security, and agent workflows.

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

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.

AI summary of any public webpage: fetches the URL, extracts readable content, and returns a short, medium, or long factual summary.

Check ETH and USDC (or any ERC-20) balance of an address on Base — pre-flight funding checks for payments and settlement.

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.

Full x402 endpoint audit: verifies the 402 challenge, payment fields, Bazaar discovery metadata, and the origin's discovery surfaces (llms.txt, openapi.json, .well-known/x402, discovery/resources), returning a 0-100 score, pass/warn/fail checks with evidence, and recommended fixes.

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

Search the Coinbase x402 Bazaar for paid resources by natural-language query.

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

Formatted settlement receipt for any Base transaction: timestamp, status, decoded token transfers, explorer link — records for x402 payments.

ERC-20 name, symbol, decimals, and total supply for a token on Base.

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

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.

Trust boolean for any x402 payTo on Base: verdict (organic/concentrated/fragile/solo/opaque), settled revenue, buyer count, top-buyer dependency — from on-chain USDC settlement, facilitator-decoded. JSON ylk.vet.v1. Upgrade path → /v1/x402/brief.

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