"Free Network Graph Visualization Tools (No Account Required)" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
Free market data for AI agents through one MCP URL: 48 tools covering stock, ETF, index and crypto quotes, OHLCV candles, options chains with greeks, commodities and FX, SEC filings and XBRL financial statements, insider and institutional holdings, analyst estimates, earnings calendar, ETF holdings, DeFi and on-chain metrics, and 800,000+ US and international macro series. Every quote carries its timestamp and delay. Works with Claude, ChatGPT, Gemini, Cursor and any MCP client. Free account, OA
Global stock and UCITS ETF research. Free: 700 successful MCP tool calls per rolling 30 days. Pro: CHF 5/month or CHF 50/year for higher usage. Screen stocks, compare fund costs and holdings, and inspect company risks. No account or API key for public research. Plans: https://bull-run.org/pricing. Connect your Bullrun account through OAuth to use Pro.
The free 9-part video course, Explore The Coin Daily Research, walks through setup and the full workflow — charts, comparisons, news and using the tools in ChatGPT or Claude: https://www.youtube.com/playlist?list=PLKY7CRxbV8Fc Ask your assistant for a chart and it arrives in the conversation — scrub Bitcoin's week, set an A-to-B range, and see the move in numbers. Pull funding, open interest, liquidations and order-book depth. Catch hourly regime shifts. Compare whole sectors, like DeFi against AI tokens. Follow source-linked news and ticker video coverage, or read the latest published Market Update with its chapters. Every figure is grounded in The Coin Daily's own research pipeline: widgets render exactly what was read, missing readings stay visible gaps, and nothing is invented. Editorial market commentary — not investment advice. No trading, wallets or payments, ever. Sign in with OAuth.
Validate and generate German e-invoices (XRechnung, ZUGFeRD) against the official KoSIT rules. Every business-rule finding comes with a plain-language explanation of what the rule requires and how to fix it. Validation needs no account; generation uses your NormAPI account via OAuth. Invoices are never stored.
Odds and forecasts on the numbers executives plan against, plus free studies and Decision Briefs.
Spain's official company registry gazette (BORME) for AI assistants: more than 9.6 million company events since 2009, updated every business day. Search companies by name or NIF, read a company's registry history (incorporations, director appointments and terminations, capital changes, insolvencies) and get daily digests and risk signals. Works without a key on the free plan; send your BORME API key in the X-API-Key header for your plan. For OAuth sign-in use https://mcp.bormeapi.com/mcp/oauth.
Read-only RS3 GE guide prices/history, optional reported buy/sell trades, buy-limit/alchemy facts, flip math and public hiscores. Search Wiki sources, list category members, and read structured monster/quest/drop facts. Guide prices lag activity; trades are not executable offers. Wiki article text requires reviewed revisions; other pages return links. Streamable HTTP; no account or API key. Independent Birdwell Labs project, unaffiliated with Jagex or the RuneScape Wiki.
Who owns Korean listed stocks, from Korea's official DART filings: 5%+ shareholders, insider trades by executives and major holders, National Pension Service (NPS) moves, and average purchase price per holder. Covers 4,000+ KOSPI/KOSDAQ companies, updated daily. Read-only, no API key.
Registered agents sell what they measured, anyone buys: validated knowledge and signed datasets. No sign-in needed to connect: searching, dataset listings and free reads work anonymously. Sign in (OAuth) only for selling and account tools.
Banco Central do Brasil (BCB): SGS series, Focus expectations, PTAX, stats + provenance. 17 tools.
Let your AI agent pay for APIs and data without handing it your money. In ChatGPT, Claude or Grok, the agent finds paid x402 APIs (with each seller's payout record from x402 Doctor) and asks to pay; you approve and sign each payment in your own wallet: MetaMask or Coinbase Wallet (USDC on Base), Phantom (USDC on Solana) or Xaman (RLUSD on the XRP Ledger). Fizzl checks every payment before you sign and every paid answer for hidden instructions. Fizzl never holds your keys. Free to start.
SoldComps.io (not sold-comps.com): live eBay sold comps for AI agents. Median sold price, middle range and recent sales for any item on eBay US, UK and Germany over the last 90 days. No key needed to try.
Dimensional weight, parcel fit, landed cost and freight class. 4 of 6 tools free.
Stock sentiment scores, monthly recaps and the mentions behind them, from sources Quantral tracks. People sign in with OAuth and a Quantral subscription (7-day free trial). Autonomous agents can buy a prepaid agent pass with USDC on Base over x402, with no account: 5.99 USDC for 7 days or 14.99 USDC for 30 days, for personal, non-commercial use. Instructions and a free sample: https://app.quantral.com/llms.txt
OpenFinance gives any AI agent easy trading across every major market through one hosted MCP server. Trade crypto spot and perpetuals on Hyperliquid with market, limit and TWAP orders, leverage and margin control. Trade stocks, indices, commodities, forex and pre-IPO names as Hyperliquid HIP-3 perps. Trade Polymarket prediction markets with odds, order books, positions, PnL and trader leaderboards. Swap and bridge across 40+ EVM chains and Solana with Relay and Jupiter, find memecoins across 200+ chains, launch tokens on Robinhood Chain and Solana, and buy crypto with card, bank or UPI. Write actions are designed to ask for your confirmation first. Connect with OAuth (sign in to OpenFinance and approve) or an API key. Works with Claude, ChatGPT, Cursor, VS Code, Codex and any MCP client. No install. Home: https://openfinance.tech/agents · Docs: https://docs.openfinance.tech · GitHub: https://github.com/openfinance-tech/mcp
Italian mobile, internet, bank account, card, loan and energy offers, with conditions and links.
Pre-payment checks for AI agents. Before an agent pays, payment_decision returns allow, review or decline with evidence. Covers sanctions screening and AML risk on the payee address, phishing checks on payment pages, and spoofed invoice or payment-request detection, for crypto and x402 payments. Free, no API key.
200+ x402 APIs for AI agents: official statistics, crypto prices, compliance and web tools.
Pay-per-call tools for AI agents, paid in USDC on Base or Solana. Web search, page and PDF reading, crypto news, Hyperliquid perps, market pulse, Chainlink price history, token checks, SEC filings, weather and more. Free calls every day, and a failed call costs nothing. Works with Tollkit Wallet.
Scores for the largest companies in each market with no account. Sign in for analysis and screening.
Processor fees, charge-to-net, invoice totals and proration. 3 of 6 tools free.
Search SEC filings by meaning. Every result is a passage cited to its filing (company, form, date, section, sec.gov link). Also screens companies by theme and verifies quotes against the filing. API key in the Authorization header; 500 free credits on sign-up.
Spanish property auctions (BOE and others) and bank-owned stock, already screened each day: verdict, score, minimum-bid ranges, size and €/m². Tools: search by province, municipality, asset type (land, retail unit, warehouse, building, home), minimum score, verdict and closing week; open the public page of each deal: what it is, checked and pending data, warnings, size ranges, minimum bid, €/m² and an indicative maximum bid where available. Read-only, no account, no auth. Each result links to it
Codes de parrainage vérifiés en France : bonus filleul et parrain, conditions, fiche source. Verified French referral codes (banks, crypto, energy, telecom, shopping): referee and referrer bonuses, conditions, last check date and official source page. Read-only, no account needed.
An open MCP server for the Portuguese housing market, run by flatin.pt. No API key, no registration, no rate-limit negotiation. Twelve tools: • imt_calculate — IMT and Imposto do Selo on a purchase, 2026 tables, including the reduced table, the relief for buyers aged 35 or under and the flat rate for non-residents • imi_rate / imi_annual_cost — the IMI rate of any of the 308 municipalities for 2023–2025, and the annual bill for a given VPT • construction_barometer — how many building-permit cases enter a town hall each month (our own indicator: monthly for three municipalities, annual for eight, method and revision policy published) • search_newbuilds / get_newbuild — 250 new developments, 53 municipalities, 71 developers, with stage and, where published, price • where_to_live / municipality_stats / compare_municipalities — municipal comparisons • glossary_lookup — Portuguese property and tax terms • request_consultation / subscribe_digest — reaching a human The data behind the tax tools is published as open data under CC BY 4.0 on the Portuguese national portal (dados.gov.pt) and archived on Zenodo with a permanent DOI. Anyone may reuse it. Humans, not bots, answer the people who get in touch: a home purchase involves personal data under the GDPR and decisions that cannot be refunded.
Taxinger reads your wallets' on-chain history, classifies every transaction, DeFi included, and computes your crypto tax under your country's own law. Through MCP an assistant can answer how a country taxes crypto, with the provision of law behind each answer; read your tax years, transactions and open questions; add wallet addresses and record your answers. You sign in with OAuth and give consent on taxinger.com; access is read or read-and-write and you can end it from your account. Payments and sign-in are never handled by the agent. Free up to 250 transactions. Taxinger prepares your numbers and the evidence behind them; it is not tax advice.
Margin, lead time, SKU mapping and price-ladder maths for dropshipping. 4 of 6 free.
Calculates German lawyers' fees under the RVG with the ONYST fee engine: fees, expenses and VAT with fee number, rate and calculation, values in dispute, and invoices for law firms in Germany. Sign in with an ONYST account. Results are a calculation, not legal advice.
Measures a portfolio from price history: independent bets, what funds own, past crises. No advice.
OFAC wallet screening, EDD memos, exposure reports, review queues and watchlists. Free to try.
Who owns Korean listed stocks, from Korea's official DART filings: 5%+ shareholders, insider trades by executives and major holders, National Pension Service (NPS) moves, and average purchase price per holder. Covers 4,000+ KOSPI/KOSDAQ companies, updated daily. Read-only, no API key.
Send a business domain, get the company profile: industry, HQ, funding, headcount history, revenue, job postings, tech stack and logo. 100 free records a month.
Real-time global intelligence on conflict, markets, energy, trade, shipping and cyber. 97 tools.
20 inbox, calendar, travel, meals and family-logistics skill products. 7 of 9 free.
30 finance, bookkeeping, legal-ops and SMB operations skill products. 6 of 8 tools free.
Phulax helps US contractors and remodelers estimate construction job costs. Describe a job and its ZIP code and Phulax prices it: materials with quantities, labor by trade, equipment, permits, contingency and a phased schedule, saved as a project in your Phulax account. You can also look up saved projects, ask questions about them, price change orders and save proposal drafts (never sent). Sign in with your Phulax account (OAuth). Estimates are AI-generated from typical US costs and are estimates, not quotes. Docs: https://phulax.pro/developers
Point-in-time, survivorship-free SEC EDGAR fundamentals + smart-money signals for AI agents.
Pixieset MCP server for ChatGPT, Claude and any AI agent: create gallery, upload photos, send invoice, list bookings and add client in your own Pixieset account. Cotlet works in the account through your Cloud Browser, a real Chrome where you sign in to Pixieset yourself; Cotlet does not store your password and you need no Pixieset API key. About the official Pixieset API: Pixieset has no public API, no webhooks and no Zapier app (checked 11 Oct 2026). Its Apps & Plugins page lists the Lightroom plugin, the Studio Manager mobile app and Photo Editor, and no developer program. Setup and FAQ: https://cotlet.dev/integrations/pixieset-api-mcp-server
Crypto cost-basis lots (FIFO/LIFO/HIFO/specific-ID), Form 8949 rows, 1099-DA diff. 5 of 8 free.
Swedish bookkeeping for small businesses: ledger, invoices, VAT, payroll. Same tools as REST API.
