OpenAI-compatible chat completions on Mistral Small 3.1 24B, tool calling and image input. Set your OpenAI SDK base URL to https://agents.citiviewgroup.com/v1/mistral and pay per token with x402 instead of an API key: $1.053 per million input and $1.665 per million output tokens, minimum $0.002 a call, at most $0.0124. The 402 quotes your request's maximum; "upto" payers are charged only the tokens used. Same request/response shape as OpenAI (tool calling, image input, stream

Verify an email address: syntax check, domain MX lookup, disposable-domain and role-account flags. Use before sending or storing an address.

Citation formatter: a ready reference in APA, MLA, Chicago, Harvard, IEEE, Vancouver or BibTeX from a DOI, an ISBN or any web page URL.

Developer toolbox in one call: sha256/sha1/sha512 hashes, base64/url/hex encode and decode, JWT decode, JSON format/validate, UUIDs, secure random numbers and passwords, regex test, slugify, word count and timestamp conversion. Also callable as GET with the same fields as query parameters.

Best DeFi yields across 16,000+ pools: filter by chain, protocol, token symbol, stablecoin-only and minimum TVL; sort by APY or TVL. Returns APY (base + reward), 30-day mean APY, TVL, IL risk and a link.

QR codes: make a QR code (PNG or SVG, any size, error-correction level) from text or a URL, or read the text from a QR code in a PNG or JPEG image. Also callable as GET with the same fields as query parameters.

Rerank up to 100 documents by relevance to a query (BGE reranker). Returns indices and scores, best first. Drop-in step for RAG and search pipelines. Also callable as GET with the same fields as query parameters.

EU VAT number check against the official VIES register (valid, company name and address), plus IBAN checksum and BIC/SWIFT format validation. Check a supplier before paying an invoice.

Data conversion and checking: convert between CSV, TSV, JSON, XML and YAML (typed CSV values), and optionally validate the data against a JSON Schema with a list of every error. Up to 1 MB. Also callable as GET with the same fields as query parameters.

Exact calculator for agents: math expressions (functions, powers, factorials), unit conversion (length, mass, volume, area, time, speed, data, energy, pressure, power, temperature) and date arithmetic (add, diff with business days, weekday). Also callable as GET with the same fields as query parameters.

Package vulnerability check for coding agents: known CVEs/GHSAs for an npm, PyPI, Go, Maven, crates.io, RubyGems, NuGet or Packagist package version, with severity, fixed versions and the latest release (OSV.dev).

Sentiment and tone classification for text (positive / negative / neutral with confidence, plus a one-line reason). Batch up to 20 texts per call. Also callable as GET with the same fields as query parameters.

Link safety check: is this URL malware or phishing? Checks Cloudflare's security DNS blocklist, domain age, look-alike and brand-impersonation tricks, shorteners and the redirect chain, then gives a verdict and risk score.

NFT lookup on Ethereum, Base, Polygon, Arbitrum or Optimism: collection name, symbol, standard and supply; with token_id also the current owner and resolved metadata (name, description, image, attributes) from IPFS/Arweave/HTTP.

Agent memory: save, get, search, list and delete notes that persist between sessions, private to the wallet that pays. Up to 2,000 keys per wallet, 16,000 characters per value. Pay with an EVM wallet. Also callable as GET with the same fields as query parameters.

OpenAI-compatible chat completions on IBM Granite 4.0 Micro, the lowest-cost chat here, with tool calling (131K context). Set your OpenAI SDK base URL to https://agents.citiviewgroup.com/v1/granite and pay per token with x402 instead of an API key: $0.051 per million input and $0.336 per million output tokens, minimum $0.002 a call, at most $0.0049. The 402 quotes your request's maximum; "upto" payers are charged only the tokens used. Same request/response shape as OpenAI (to

Geocode a place, landmark or street address to latitude/longitude with city, region, country, postcode, timezone and population where known. Cities via GeoNames, addresses and points of interest via OpenStreetMap.

Total value locked for a DeFi protocol (aave, uniswap, aerodrome, lido...) and/or a chain (Base, Ethereum, Solana...), with the chain's TVL rank.

IP address and ASN lookup from the internet registries (RDAP): network name and range, owning organization, country, origin ASN, abuse contact email, registration dates and reverse DNS. Pass ip= (IPv4/IPv6) or asn=.

Background jobs: result of a slow tool run with async=true (answer, research, ask, errorfix, libdocs, since, second-opinion, bulk read). Results are also POSTed to your webhook_url for free.