duckdns.org

Cross-source correlation for one company in a single call: latest quotes from 3 independent market-data providers, recent SEC filings, and general mentions across news/academic/legal/dev-community sources -- joins data no single-source provider offers together. Accepts a ticker (AAPL) or company name (Apple).

Full-text search across every aggregated data source in one call: news, SEC filings, court opinions, academic papers, government records, and developer discussions. One query surfaces everything concordant across independently-sourced, citable results -- not a single-source wrapper. Optional source/category/since filters.

Tabular time-series lookup across economic indicators (FRED, World Bank, UN Comtrade), crypto TVL, weather, and stock quotes -- by source + series_id, with an optional date range.

One call, every category: pulls everything matching a topic across all aggregated sources and groups it by category (news, legal, academic, dev community, ...) with counts -- replaces manually calling /tools/search once per category and merging results yourself. Structured aggregation, not an AI-generated summary.

Chinese summary API for public URL or raw text. Returns summary + key_points + 3 actions JSON. $0.02 USDC per call. Lightweight fetch, no headless browser.

Chinese crypto market brief as structured JSON for agents. Input symbol (+ optional context). Output bias/thesis/bullets/risks/actions. $0.03 USDC per call. Not financial advice.

Live crypto narrative and sentiment radar for AI agents. Searches recent X posts and the web, adds a verifiable CoinGecko market snapshot, and returns structured signals, risks, watch items, and source URLs. Input ticker + 1h/6h/24h/7d window. $0.03 USDC per call.

Check e-invoicing mandate and format requirements (Peppol/UBL, CIUS, clearance vs continuous transaction control) for any EU country in one x402 call. Surfaces VAT-compliance rules for B2B/B2G invoicing so agents and finance apps stay compliant before issuing. Pay per lookup in USDC on Base, no API key, instant JSON.

Grok 4.5 High chat via x402. OpenAI-compatible /v1/chat/completions, streaming supported. Listed as grok-4.5-high. $0.01 USDC per request on Base/Solana mainnet. See GET /x402/v1/models for the full chat catalog.

Validate any EU VAT number against the official VIES registry and resolve the registered business name and address in one x402 call. Covers all 27 EU member states for VAT compliance, B2B invoice validation, and tax-ID verification in agentic finance workflows. Pay per check in USDC on Base, no API key, instant JSON.

Recent transaction history for an address, normalized across Ethereum, Base, Bitcoin, and Solana -- direction, counterparty, and value where the chain's data model makes that derivable.

Ethereum/Base only: is this address a contract, and if it looks like an ERC20 token, its name/symbol/decimals via eth_call -- skips the manual ABI-decoding work.

Turn a .eth name into an address, or an address into its primary .eth name -- one endpoint, auto-detects which direction based on the input. Ethereum mainnet only (ENS has no separate Base deployment).

Current network fee conditions -- gas price (ETH/Base/Arbitrum/Optimism/Polygon), sat/vB fee tiers (Bitcoin), or recent prioritization fees (Solana) -- useful for an agent about to construct a transaction itself.

Fetch a URL and extract clean, boilerplate-free Markdown from it -- SSRF-guarded, size-capped, redirect-safe.

Fast tier: scan text for prompt-injection techniques before your agent processes it. Heuristics first, LLM only on ambiguous cases.

Volume tier: scan up to 10 texts for a single flat price -- cheaper per item than calling the fast tier that many times separately.

Deep tier: always escalates to an LLM verdict, skipping the fast tier's confidence-gate shortcuts. For high-stakes untrusted input (about to execute code or approve a transaction).

Flagship bundle: fetch a URL, extract clean Markdown, and injection-scan the result in one priced call -- cheaper than calling fetch-clean and injection-scan separately.

What would $1,000 have become if you'd followed this rule historically? On-demand parameterized backtest of the 200-day-SMA + trailing-stop methodology against real historical data -- caller supplies asset, SMA period, trailing-stop %, cooldown, and date range; returns real computed performance metrics and equity curve.

Does a 150-day or 200-day SMA actually perform better on this asset? Test two parameter sets head-to-head against the same asset and date range in one call, with both real results and a declared winner -- cheaper than paying for two separate backtests and comparing them yourself.

The flagship signal: a single transparent 0-100 conviction score combining trend regime, volatility context, and relative strength vs other tracked assets -- with the full component breakdown shown, not a black-box model. Every number is independently verifiable via strategy-consensus, strategy-rank, or strategy-backtest.

Live trend regime + volatility context for one asset (BTC/ETH/SOL/XRP/ADA), backed by a backtested 200-day-SMA + trailing-stop methodology. Optionally personalized to your own entry price/date.

Same as strategy-consensus, for 2-3 assets in one call -- cheaper than calling the single-asset endpoint that many times separately.

Three honestly-backtested risk profiles (conservative/balanced/aggressive) of the same validated trend + trailing-stop methodology, each with real historical numbers -- pick based on your own risk tolerance instead of guessing which parameters suit you.

Which of BTC/ETH/SOL is relatively strongest right now, ranked by distance above/below each asset's own 200-day SMA -- one answer for rotation strategies instead of comparing raw per-asset data yourself.

Token balances for a wallet, with USD value where a price is available: full SPL token enumeration on Solana, or specific ERC20 balances on Ethereum/Base (a verified default watchlist, or your own token contract list) -- not available for Bitcoin, which has no token standard.

Native balance for a wallet address, with one consistent response shape across Ethereum, Base, Bitcoin, and Solana -- no need to integrate each chain's RPC/explorer separately yourself.

Check up to 10 wallets in one call -- mix chains freely (e.g. an Ethereum wallet and a Solana wallet in the same request). Cheaper per item than calling wallet-balance that many times separately. A bad address in the batch doesn't fail the whole call -- that item just comes back with an error, the rest still succeed.

The flagship: balance, token holdings, recent activity, USD portfolio value, and an OFAC sanctions-list check for a wallet, in one call -- across Ethereum, Base, Arbitrum, Optimism, Polygon, Bitcoin, and Solana. Cheaper and simpler than calling wallet-balance + token-holdings + address-activity separately. Sanctions screening only (not a general scam detector) -- an honest, narrower claim, not a vague safety score.