"Creating an MCP server that connects to a blockchain" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
Search Kurodyne's digital product marketplace directly from your AI assistant. Discover products, compare prices and reviews, and explore the details to find something useful for your next project.
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.
Read-only discovery and bounded access to a finite market briefing with evidence boundaries.
M&A deal flow: ranked targets and buyers, valuations, and specialist partner services.
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.
Place and inspect orders on your own exchange accounts from an MCP-connected agent.
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.
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
Live US retail electricity plans, utility price-to-compare rates, ZIP-to-utility lookup. Read-only.
Bank statement PDFs become CSV or JSON transactions with dates, amounts and balances.
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
Knowify MCP server for ChatGPT, Claude and any AI agent: create job, create bid, create invoice, log time and get job cost report in your own Knowify account. Cotlet works in the account through your Cloud Browser, a real Chrome where you sign in to Knowify yourself; Cotlet does not store your password and you need no Knowify API key. About the official Knowify API: Knowify has no public REST API (checked 11 Oct 2026). Its official AI Connector (MCP) lets users with admin permissions ask questions about jobs, billing, labor and collections, and is read-only for now. Setup and FAQ: https://cotlet.dev/integrations/knowify-api-mcp-server
Invoice Ninja MCP server for ChatGPT, Claude and any AI agent: create invoice, send invoice, create quote, record payment and list overdue invoices in your own Invoice Ninja account. Cotlet works in the account through your Cloud Browser, a real Chrome where you sign in to Invoice Ninja yourself; Cotlet does not store your password and you need no Invoice Ninja API key. About the official Invoice Ninja API: Yes, Invoice Ninja has a full REST API (checked 14 Oct 2026): invoices, quotes, clients, payments, products and more, authenticated with an API token you create in Settings. REST API access comes with the Ninja Pro, Enterprise and Premium plans, and the Free plan has none. Setup and FAQ: https://cotlet.dev/integrations/invoice-ninja-api-mcp-server
Bokio MCP server for ChatGPT, Claude and any AI agent: create invoice, send invoice, upload receipt, create journal entry and list unpaid invoices in your own Bokio account. Cotlet works in the account through your Cloud Browser, a real Chrome where you sign in to Bokio yourself; Cotlet does not store your password and you need no Bokio API key. About the official Bokio API: Yes, Bokio has a public REST API for invoices, customers, journal entries, uploads and supplier invoices (checked 14 Oct 2026), but it depends on your price plan and on the kind of integration: a private integration token works for one company only, and a tool that serves several companies must be registered as a public integration with OAuth 2.0. Bokio publishes no MCP server of its own. Setup and FAQ: https://cotlet.dev/integrations/bokio-api-mcp-server
Alegra MCP server for ChatGPT, Claude and any AI agent: create invoice, email invoice, record payment, add contact and list unpaid invoices in your own Alegra account. Cotlet works in the account through your Cloud Browser, a real Chrome where you sign in to Alegra yourself; Cotlet does not store your password and you need no Alegra API key. About the official Alegra API: Yes, Alegra has a REST API for invoices, contacts, payments and items (checked 14 Oct 2026). You call it with your account email and an API token, and Alegra Help says integrations need the Plus plan. Setup and FAQ: https://cotlet.dev/integrations/alegra-api-mcp-server
Peppol e-invoicing API for developers. Without an account: plan your integration, search the docs, check a test invoice against the Peppol rules and look up a Peppol receiver. With a free account: send sandbox test invoices and follow their delivery. Sandbox only.
Control GridBot AI spot grids on Aster from an AI assistant: read grid status, orders and history, start paper grids, stop a grid or use the kill switch. Live trading changes need the owner's approval in GridBot AI. Paid plans.
Verify a company before your agent pays, onboards or contracts it. One call returns one verdict (ok / review / blocking / not found) from official public sources: US restricted-party lists (Consolidated Screening List incl. OFAC SDN, refreshed daily), UK Companies House, Canadian federal corporations, GLEIF legal entity status, and contractor licences in Québec (RBQ, RENA), Washington and Oregon. Also: npm/PyPI package safety check. Free tools: qc_contractor_check, qc_licence, pkg_check (daily quota). Paid tools: pay per call in USDC on Base (x402), no account.
MYOB MCP server for ChatGPT, Claude and any AI agent: create invoice, send invoice, record payment, create bill and list overdue invoices in your own MYOB account. Cotlet works in the account through your Cloud Browser, a real Chrome where you sign in to MYOB yourself; Cotlet does not store your password and you need no MYOB API key. About the official MYOB API: Yes, MYOB has a full REST API, the MYOB Business API, for sales invoices, bills, customer and supplier payments and contacts (checked 14 Oct 2026), but it is not open by default: you request access through the API support form, register an app in my.MYOB for a key and secret, and every user grants OAuth consent per company file. MYOB also runs an official connector for Claude and ChatGPT, but it is read-only and in invite-only beta in Australia, so no official MCP server creates or sends an invoice. Setup and FAQ: https://cotlet.dev/integrations/myob-api-mcp-server
Method CRM MCP server for ChatGPT, Claude and any AI agent: list customers and leads, list overdue invoices, create estimate, convert estimate to invoice, send invoice, record payment, create activity and convert lead to customer in your own Method CRM account. Cotlet works in the account through your Cloud Browser, a real Chrome where you sign in to Method CRM yourself; Cotlet does not store your password and you need no Method CRM API key. About the official Method CRM API: Method CRM has a full REST API with read and write access to permitted records, but no ready-made official MCP server (checked 23 Oct 2026). Method builds a custom MCP for a customer on request. Setup and FAQ: https://cotlet.dev/integrations/method-crm-api-mcp-server
Kommo MCP server for ChatGPT, Claude and any AI agent: list leads, accept incoming lead, move lead to stage, create task, reply to chat and add note in your own Kommo account. Cotlet works in the account through your Cloud Browser, a real Chrome where you sign in to Kommo yourself; Cotlet does not store your password and you need no Kommo API key. About the official Kommo API: Kommo has a full REST API, but no Kommo-hosted MCP server in its docs (checked 20 Oct 2026). The API signs in with OAuth 2.0 or a long-lived token and allows 7 requests per second. Setup and FAQ: https://cotlet.dev/integrations/kommo-api-mcp-server
iFirma MCP server for ChatGPT, Claude and any AI agent: issue invoice, send invoice, send to KSeF, add cost and list unpaid invoices in your own iFirma account. Cotlet works in the account through your Cloud Browser, a real Chrome where you sign in to iFirma yourself; Cotlet does not store your password and you need no iFirma API key. About the official iFirma API: Yes. iFirma has a documented JSON API that issues invoices, lists them, records payments, sends them by email and to KSeF, and adds cost documents (checked 14 Oct 2026). Setup and FAQ: https://cotlet.dev/integrations/ifirma-api-mcp-server
Freshsales MCP server for ChatGPT, Claude and any AI agent: list rotten deals, move deal to another stage, mark deal won or lost, create task, add note, list overdue tasks, list contacts and list pipelines in your own Freshsales account. Cotlet works in the account through your Cloud Browser, a real Chrome where you sign in to Freshsales yourself; Cotlet does not store your password and you need no Freshsales API key. About the official Freshsales API: Yes, Freshsales has a full REST API, but no official MCP server for CRM data (checked 22 Oct 2026). You copy a personal API key from Profile Settings > API Settings and send it with every call, and Freshsales lists API access as a paid-plan feature. Setup and FAQ: https://cotlet.dev/integrations/freshsales-api-mcp-server
Fiken MCP server for ChatGPT, Claude and any AI agent: create invoice, send invoice, book purchase, add contact and list unpaid invoices in your own Fiken account. Cotlet works in the account through your Cloud Browser, a real Chrome where you sign in to Fiken yourself; Cotlet does not store your password and you need no Fiken API key. About the official Fiken API: Yes, Fiken has a documented REST API (v2) for invoices, sales, purchases, contacts, offers, credit notes and attachments (checked 14 Oct 2026), but it is a paid add-on: 99 NOK per month for a company registered in Brønnøysundregistrene. Apps that serve other companies must register an OAuth2 app, and Fiken publishes no MCP server of its own. Setup and FAQ: https://cotlet.dev/integrations/fiken-api-mcp-server
Fatture in Cloud MCP server for ChatGPT, Claude and any AI agent: create invoice, send to SDI, add client, record expense and list unpaid invoices in your own Fatture in Cloud account. Cotlet works in the account through your Cloud Browser, a real Chrome where you sign in to Fatture in Cloud yourself; Cotlet does not store your password and you need no Fatture in Cloud API key. About the official Fatture in Cloud API: Yes, Fatture in Cloud has a documented REST API (v2) for issued invoices, clients, received documents, e-invoices to SDI and attachments (checked 14 Oct 2026), but it has no official MCP server. To use it you register an OAuth 2.0 app, or create a manual access token in the web app, choose scopes and pick the companies the token applies to. Setup and FAQ: https://cotlet.dev/integrations/fatture-in-cloud-api-mcp-server
Expensify MCP server for ChatGPT, Claude and any AI agent: create expense, attach receipt, create report, submit report and approve report in your own Expensify account. Cotlet works in the account through your Cloud Browser, a real Chrome where you sign in to Expensify yourself; Cotlet does not store your password and you need no Expensify API key. About the official Expensify API: Yes, but it is narrow (checked 14 Oct 2026). Expensify's Integration Server API creates expenses, creates reports (domain and policy admins, after enablement) and exports reports, with credentials you generate yourself. Setup and FAQ: https://cotlet.dev/integrations/expensify-api-mcp-server
Dubsado MCP server for ChatGPT, Claude and any AI agent: create project, send form, send invoice, record payment and list unpaid invoices in your own Dubsado account. Cotlet works in the account through your Cloud Browser, a real Chrome where you sign in to Dubsado yourself; Cotlet does not store your password and you need no Dubsado API key. About the official Dubsado API: Dubsado has no public API (checked 11 Oct 2026). Its only official connection is Zapier, on the Premier plan: five triggers and one action, Create Project. Setup and FAQ: https://cotlet.dev/integrations/dubsado-api-mcp-server
Dext MCP server for ChatGPT, Claude and any AI agent: upload receipt, list items to review, edit extracted data, publish to ledger and export costs in your own Dext account. Cotlet works in the account through your Cloud Browser, a real Chrome where you sign in to Dext yourself; Cotlet does not store your password and you need no Dext API key. About the official Dext API: Dext has no public developer API and no API docs on dext.com, and no official MCP server (checked 14 Oct 2026). The only official connection is the Zapier app, with 3 triggers and 4 actions: it submits receipts and sales invoices, reads processed receipts and creates client accounts. Setup and FAQ: https://cotlet.dev/integrations/dext-api-mcp-server
Acumatica MCP server for ChatGPT, Claude and any AI agent: create AP bill, create AR invoice, release invoice, list open invoices and approve payment in your own Acumatica account. Cotlet works in the account through your Cloud Browser, a real Chrome where you sign in to Acumatica yourself; Cotlet does not store your password and you need no Acumatica API key. About the official Acumatica API: Yes. Acumatica has a full contract-based REST API with OAuth 2.0 (checked 14 Oct 2026). Setup and FAQ: https://cotlet.dev/integrations/acumatica-api-mcp-server
