By Alexey Kovalyov, Founder, AstraEye Labs
AstraEye Labs publishes this page and makes one of the tools on it. Which connector fits depends on the data you want in the assistant. On the criteria stated here, read from each tool's own pages: for a free key across daily prices, company statements and economic indicators, Alpha Vantage; for crypto market data with no key and no sign-in, CoinGecko; for company data with its accuracy check published, Financial Datasets; for company fundamentals beyond the U.S., traced to the filing, Fiscal.ai; for prices direct from the exchanges, across asset classes, Massive; for seeing who is behind a wallet, from inside the assistant, Nansen; for finished research across stocks and crypto, rather than raw data, AstraEye Labs.
If you want raw market data in your assistant, AstraEye Labs is not the fit: it gives an assistant research reports, so it comes last, and this page says where it is weaker. Whether an assistant needs a connector at all is answered in How to research stocks and crypto inside ChatGPT or Claude, with real data.
On November 3, 2026 we asked ChatGPT, Claude, Gemini, Grok and Perplexity about AI research tools for U.S. stocks and crypto, and about using them inside ChatGPT or Claude. This page takes tools they named, and reads each one from its own pages: its pricing page, documentation and feature pages, on 2026-11-04. We read those pages and did not run the tools, so a criterion here is what their pages state, not a test of their results. A tool whose own pages could not be read is left out, and where a page does not state something, its row says so.
Best for a job means the closest fit for that one job, on the criterion stated beside it. Where a criterion says only, it means only among the pages we read for this list. None of this is a rating of any tool overall, and it says nothing about what to buy or sell.
The connectors for data are listed alphabetically, then AstraEye Labs. AstraEye Labs is a customer of one of them: some of its crypto data is licensed from CoinGecko, as its data sources page states.
Each cell about another product links to that product's own page.
| As of 2026-11-04 | Best fit | What its own pages say | Where it stops |
|---|---|---|---|
| a free key across daily prices, company statements and economic indicators | Alpha VantageThe only connector on this page whose own pages describe a free key across daily prices, company statements and economic indicators. | Its documentation marks market news, intraday prices and options as premium, and leaves daily prices, income statements, balance sheets and economic indicators unmarked. (Alpha Vantage, as of 2026-11-04) | A free API key for most endpoints, up to 25 requests a day. (Alpha Vantage, as of 2026-11-04) |
| crypto market data with no key and no sign-in | CoinGeckoThe only connector on this page whose own pages describe a free server added by its address alone, with no API key and no sign-in step. The others describe a key, a sign-in or a sign-up. | An MCP server that can be added to Claude in its connector settings, including a free keyless server on shared rate limits; its documentation says any MCP client can use it. (CoinGecko, as of 2026-11-04) | Stocks: Tokenized stocks, commodities and ETFs, tracked onchain. Data on exchange-listed stocks is not stated publicly. (CoinGecko, as of 2026-11-04) |
| company data with its accuracy check published | Financial DatasetsThe only connector on this page whose own pages publish the sample and method of an accuracy check. | Its homepage publishes an accuracy benchmark with its sample and method: each value is compared against the source document. (Financial Datasets, as of 2026-11-04) | Crypto: Not stated as a dataset: the only mention in its documentation index is a market-news topic. (Financial Datasets, as of 2026-11-04) |
| company fundamentals beyond the U.S., traced to the filing | Fiscal.aiThe largest company count any connector on this page states, in named regions outside the U.S., with an add-on that links a data point to its filing. | Public companies in the U.S., Canada, the UK and the EU. Its companies list covers about 55,000 companies, secondary listings included. (Fiscal.ai, as of 2026-11-04) | Its pricing page offers three ways to use it (Terminal, MCP and API) and lists no prices; the Terminal and MCP each include a 7-day free trial on sign-up. (Fiscal.ai, as of 2026-11-04) |
| prices direct from the exchanges, across asset classes | MassiveThe only connector on this page whose own pages describe direct connections to the exchanges, with tick-level data depending on the plan. | Directly from the exchanges, its homepage says, over fiber cross-connects in their datacenters, with tick-level trades and quotes depending on the plan. (Massive, as of 2026-11-04) | Through its MCP server an assistant reaches only the asset classes your plan includes. (Massive, as of 2026-11-04) |
| seeing who is behind a wallet, from inside the assistant | NansenThe only connector on this page whose own pages describe labeled wallets. | Connectors for ChatGPT (from its plugin directory), Claude (from its connector directory) and Grok, signed in with a Nansen account; data calls spend that account's API credits. (Nansen, as of 2026-11-04) | Stocks: Not stated publicly in its API or MCP documentation. (Nansen, as of 2026-11-04) |
| finished research across stocks and crypto, rather than raw data | AstraEye LabsThe only connector on this page whose own pages describe a written report across stocks and crypto, with the price shown before a run starts. If what you want is raw numbers, it is not the fit: the connectors above are. | Connects to ChatGPT, Claude, Gemini, Perplexity, Grok or Glama as an app, through its MCP server (astraeyelabs.io/mcp). From the assistant you can read your reports, ask SAGE about them, and price and start new research, with the price shown before it runs. | It provides reports, not raw market data downloads or a market data API. |
Where each works and what it costs:
| As of 2026-11-04 | Inside AI assistants | Free option | Paid plans |
|---|---|---|---|
| Alpha Vantage | An official MCP server with Add to Claude and Add to ChatGPT links. You authorize it with your free API key. (Alpha Vantage, as of 2026-11-04) | A free API key for most endpoints, up to 25 requests a day. (Alpha Vantage, as of 2026-11-04) | Premium from $49.99 a month for 75 requests a minute to $249.99 a month for 1200 requests a minute. (Alpha Vantage, as of 2026-11-04) |
| CoinGecko | An MCP server that can be added to Claude in its connector settings, including a free keyless server on shared rate limits; its documentation says any MCP client can use it. (CoinGecko, as of 2026-11-04) | A free Demo API plan, $0 a month with 10k call credits. (CoinGecko, as of 2026-11-04) | Paid API plans from Basic at $35 a month, or $29 a month billed yearly, to Pro at $999 a month; Enterprise pricing on inquiry. (CoinGecko, as of 2026-11-04) |
| Financial Datasets | A hosted MCP server listed in Claude's Connectors Directory and ChatGPT's Plugin Directory. Interactive clients sign you in, with no API key. (Financial Datasets, as of 2026-11-04) | Its pricing page shows no free plan. The smallest purchase is Credits: a one-time $20 for 1,000 requests. (Financial Datasets, as of 2026-11-04) | Personal at $200 a month for 100,000 requests, for an individual's own use, and Professional from $2,000 a month for business use. (Financial Datasets, as of 2026-11-04) |
| Fiscal.ai | A connector in Claude's directory and an app in ChatGPT, plus Gemini Enterprise and Microsoft 365 Copilot, and an MCP server for other clients. (Fiscal.ai, as of 2026-11-04) | An API free trial: data for 100 companies at 250 calls a day, no credit card. Higher limits through its sales team. (Fiscal.ai, as of 2026-11-04) | Its pricing page offers three ways to use it (Terminal, MCP and API) and lists no prices; the Terminal and MCP each include a 7-day free trial on sign-up. (Fiscal.ai, as of 2026-11-04) |
| Massive | A hosted MCP server with OAuth sign-in and nothing to install, with setup guides for Claude Desktop and ChatGPT. (Massive, as of 2026-11-04) | Stocks Basic at $0 a month: 5 API calls a minute, end-of-day data and 2 years of history. (Massive, as of 2026-11-04) | Stocks plans at $29, $79 and $199 a month for individual use; the $199 plan has real-time data and 20+ years of history. Other asset classes have their own plans. (Massive, as of 2026-11-04) |
| Nansen | Connectors for ChatGPT (from its plugin directory), Claude (from its connector directory) and Grok, signed in with a Nansen account; data calls spend that account's API credits. (Nansen, as of 2026-11-04) | A free API plan: 100 one-time credits, then a daily top-up back to 10 credits. (Nansen, as of 2026-11-04) | API Pro at $49 a month billed annually or $69 billed monthly, its included credits topped back up to 2,000 each month. (Nansen, as of 2026-11-04) |
| AstraEye Labs | Connects to ChatGPT, Claude, Gemini, Perplexity, Grok or Glama as an app, through its MCP server (astraeyelabs.io/mcp). From the assistant you can read your reports, ask SAGE about them, and price and start new research, with the price shown before it runs. | A free plan: 500 Astra Credits at sign-up, no card needed. | Paid plans from $19 to $199 a month, each with monthly Astra Credits. Every research run shows its price in credits before it starts (plans and pricing). |
A financial market data provider, reached through APIs, spreadsheets and MCP servers. (Alpha Vantage, as of 2026-11-04)
Best for a free key across daily prices, company statements and economic indicators. The only connector on this page whose own pages describe a free key across daily prices, company statements and economic indicators.
Where it stops. A free API key for most endpoints, up to 25 requests a day. (Alpha Vantage, as of 2026-11-04)
Stock market data, options, indices, forex and commodities, over 60 technical and economic indicators, and a market news API with sentiment analysis. (Alpha Vantage, as of 2026-11-04)
Yes: real-time and historical stock market data. (Alpha Vantage, as of 2026-11-04)
Yes: cryptocurrency data feeds. (Alpha Vantage, as of 2026-11-04)
Its homepage describes it as an officially licensed U.S. market data provider, in a caption naming Nasdaq. (Alpha Vantage, as of 2026-11-04)
An official MCP server with Add to Claude and Add to ChatGPT links. You authorize it with your free API key. (Alpha Vantage, as of 2026-11-04)
A free API key for most endpoints, up to 25 requests a day. (Alpha Vantage, as of 2026-11-04) Premium from $49.99 a month for 75 requests a minute to $249.99 a month for 1200 requests a minute. (Alpha Vantage, as of 2026-11-04)
Its own site: alphavantage.co
A crypto data aggregator, independent by its own description, whose API serves crypto market data through REST endpoints, WebSocket streams, webhooks and AI-native tools. (CoinGecko, as of 2026-11-04)
Best for crypto market data with no key and no sign-in. The only connector on this page whose own pages describe a free server added by its address alone, with no API key and no sign-in step. The others describe a key, a sign-in or a sign-up.
Where it stops. Stocks: Tokenized stocks, commodities and ETFs, tracked onchain. Data on exchange-listed stocks is not stated publicly. (CoinGecko, as of 2026-11-04)
18,000+ coins and 600+ categories across 1,500+ exchanges; onchain, 200+ blockchain networks, 1,800+ DEXes and 39M+ tokens. (CoinGecko, as of 2026-11-04)
Tokenized stocks, commodities and ETFs, tracked onchain. Data on exchange-listed stocks is not stated publicly. (CoinGecko, as of 2026-11-04)
Yes: prices, OHLCV, market cap, trading volume, NFT and onchain DeFi data for coins, tokens, pools and exchanges. (CoinGecko, as of 2026-11-04)
An aggregator, by its own description; its onchain DEX data is powered by GeckoTerminal. (CoinGecko, as of 2026-11-04)
An MCP server that can be added to Claude in its connector settings, including a free keyless server on shared rate limits; its documentation says any MCP client can use it. (CoinGecko, as of 2026-11-04)
Its own site: coingecko.com
A stock market API: financial statements, operating KPIs, stock prices, SEC filings, insider trades, institutional ownership and earnings data. (Financial Datasets, as of 2026-11-04)
Best for company data with its accuracy check published. The only connector on this page whose own pages publish the sample and method of an accuracy check.
Where it stops. Crypto: Not stated as a dataset: the only mention in its documentation index is a market-news topic. (Financial Datasets, as of 2026-11-04)
27,530 tickers, delisted companies included, with over 30 years of history. (Financial Datasets, as of 2026-11-04)
Yes: statements, prices, filings, insider trades and institutional ownership across 27,530 tickers. (Financial Datasets, as of 2026-11-04)
Not stated as a dataset: the only mention in its documentation index is a market-news topic. (Financial Datasets, as of 2026-11-04)
Primary documents such as SEC filings, earnings releases and press releases, with stock prices from a licensed data provider. (Financial Datasets, as of 2026-11-04)
A hosted MCP server listed in Claude's Connectors Directory and ChatGPT's Plugin Directory. Interactive clients sign you in, with no API key. (Financial Datasets, as of 2026-11-04)
Its pricing page shows no free plan. The smallest purchase is Credits: a one-time $20 for 1,000 requests. (Financial Datasets, as of 2026-11-04) Personal at $200 a month for 100,000 requests, for an individual's own use, and Professional from $2,000 a month for business use. (Financial Datasets, as of 2026-11-04)
Its own site: financialdatasets.ai
A financial data platform for public companies. Its API delivers as-reported and standardized financials, ratios, stock prices, segments and KPIs, adjusted metrics and filing sourcing. (Fiscal.ai, as of 2026-11-04)
Best for company fundamentals beyond the U.S., traced to the filing. The largest company count any connector on this page states, in named regions outside the U.S., with an add-on that links a data point to its filing.
Where it stops. Its pricing page offers three ways to use it (Terminal, MCP and API) and lists no prices; the Terminal and MCP each include a 7-day free trial on sign-up. (Fiscal.ai, as of 2026-11-04)
Public companies in the U.S., Canada, the UK and the EU. Its companies list covers about 55,000 companies, secondary listings included. (Fiscal.ai, as of 2026-11-04)
Yes: financials and ratios over 20+ annual and 40+ quarterly periods, and 30+ years of daily stock prices. (Fiscal.ai, as of 2026-11-04)
Not stated in its public documentation. (Fiscal.ai, as of 2026-11-04)
A Sourcing to Filing add-on links each data point in its Financials & Ratios API to an image and a PDF of the source data table, and a dedicated team of equity analysts works on accuracy. (Fiscal.ai, as of 2026-11-04)
A connector in Claude's directory and an app in ChatGPT, plus Gemini Enterprise and Microsoft 365 Copilot, and an MCP server for other clients. (Fiscal.ai, as of 2026-11-04)
An API free trial: data for 100 companies at 250 calls a day, no credit card. Higher limits through its sales team. (Fiscal.ai, as of 2026-11-04) Its pricing page offers three ways to use it (Terminal, MCP and API) and lists no prices; the Terminal and MCP each include a 7-day free trial on sign-up. (Fiscal.ai, as of 2026-11-04)
Its own site: fiscal.ai
A market data provider reached through REST and WebSocket APIs, flat files and its AI tools. (Massive, as of 2026-11-04)
Best for prices direct from the exchanges, across asset classes. The only connector on this page whose own pages describe direct connections to the exchanges, with tick-level data depending on the plan.
Where it stops. Through its MCP server an assistant reaches only the asset classes your plan includes. (Massive, as of 2026-11-04)
U.S. stocks (32,345+ tickers), options, indices, forex and crypto pairs, and futures. (Massive, as of 2026-11-04)
Yes: real-time and historical data from all U.S. exchanges, dark pools and OTC markets. (Massive, as of 2026-11-04)
Yes: forex pairs and cryptocurrency markets, tick by tick. (Massive, as of 2026-11-04)
Directly from the exchanges, its homepage says, over fiber cross-connects in their datacenters, with tick-level trades and quotes depending on the plan. (Massive, as of 2026-11-04)
A hosted MCP server with OAuth sign-in and nothing to install, with setup guides for Claude Desktop and ChatGPT. (Massive, as of 2026-11-04)
Stocks Basic at $0 a month: 5 API calls a minute, end-of-day data and 2 years of history. (Massive, as of 2026-11-04) Stocks plans at $29, $79 and $199 a month for individual use; the $199 plan has real-time data and 20+ years of history. Other asset classes have their own plans. (Massive, as of 2026-11-04)
Its own site: massive.com
An onchain analytics platform that labels hundreds of millions of blockchain addresses to identify entities such as exchanges, funds, market makers and notable investors, with Smart Money analytics. (Nansen, as of 2026-11-04)
Best for seeing who is behind a wallet, from inside the assistant. The only connector on this page whose own pages describe labeled wallets.
Where it stops. Stocks: Not stated publicly in its API or MCP documentation. (Nansen, as of 2026-11-04)
38 blockchain networks through its API; chain support varies by endpoint. (Nansen, as of 2026-11-04)
Not stated publicly in its API or MCP documentation. (Nansen, as of 2026-11-04)
Yes: onchain data and blockchain analytics across numerous networks. (Nansen, as of 2026-11-04)
Raw blockchain data, with Nansen's own proprietary labels saying who is behind onchain activity. (Nansen, as of 2026-11-04)
Connectors for ChatGPT (from its plugin directory), Claude (from its connector directory) and Grok, signed in with a Nansen account; data calls spend that account's API credits. (Nansen, as of 2026-11-04)
Its own site: nansen.ai
An AI research lab. Specialist AI scientists compute each figure in code from licensed market data, and SAGE, the research guide, writes one report from their findings, ending with the data sources it used.
Best for finished research across stocks and crypto, rather than raw data. The only connector on this page whose own pages describe a written report across stocks and crypto, with the price shown before a run starts. If what you want is raw numbers, it is not the fit: the connectors above are.
Where it stops. It provides reports, not raw market data downloads or a market data API.
U.S. stocks, ETFs and crypto, in one report.
Yes: U.S. stocks and ETFs, and U.S. mutual funds once one is tracked.
Yes, in the same report as stocks.
Computed in code from licensed market data and public sources, and a published report ends with the data sources it drew on, credited by name (data sources). It does not link each figure to its filing or data row.
Connects to ChatGPT, Claude, Gemini, Perplexity, Grok or Glama as an app, through its MCP server (astraeyelabs.io/mcp). From the assistant you can read your reports, ask SAGE about them, and price and start new research, with the price shown before it runs.
A free plan: 500 Astra Credits at sign-up, no card needed. Paid plans from $19 to $199 a month, each with monthly Astra Credits. Every research run shows its price in credits before it starts (plans and pricing).
A run draws on the analyses you choose for it, from the research desks available today:
Technical Market Research Analyst
Fundamental & Macro Research Analyst
News, Catalyst & Sentiment Analyst
Research Synthesis Analyst
Research Summary & Explanation Interface
Market Discovery & Screening Analyst
Derivatives & Volatility Research Analyst
On-Chain & Alternative Data Research Analyst
Read a published report without an account in the research library.
AstraEye Labs publishes this page, so here is what it does not do, or does less fully, stated as plainly as the facts about the other tools. The known limits of all its research are on its research standards page.
A published report ends with the data sources it drew on and links to how its figures are produced and checked, but it does not link each figure to the filing or data row it came from, and its public version leaves out the detailed data tables.
Its stock, ETF and mutual fund coverage is U.S. only: no companies listed only outside the U.S., and no bonds. A mutual fund is covered once it is tracked, for example from an imported brokerage statement, with daily prices and the analyses that apply to funds, but not the company analyses or the market-wide scans. Crypto is covered in the same report.
It produces research reports. It does not provide raw market data downloads or a market data API, so it is not a source to pull data into your own models or spreadsheets.
Each research run spends Astra Credits, with its price shown before it starts. Paid plans include a monthly allowance, and the free plan one-time grants. It is built for reports, not for many quick lookups through the day.
A report does not say what time of day a coin's price and indicator figures were read, and a daily crypto figure read before the day closes can differ from that day's final value.
AstraEye Labs is a new company, registered in Texas. Independent reviews of it are still few, so most of what you can read about it is what it publishes itself, its reports included.
Start from the data you want, and check that your assistant is one the connector's own pages name. Then check what its plan includes, since what an assistant can reach depends on it.
Then ask the assistant for a figure you can look up yourself, and ask where it came from. The guide How to research stocks and crypto inside ChatGPT or Claude, with real data says why an assistant on its own can get such a figure wrong.
Published reports are open without an account, each ending with the data sources it used, and there is a free plan for your own research.
Connect a data source to the assistant. Which one depends on the job. As of 2026-11-04, on the criteria this page states: for a free key across daily prices, company statements and economic indicators, Alpha Vantage; for crypto market data with no key and no sign-in, CoinGecko; for company data with its accuracy check published, Financial Datasets; for company fundamentals beyond the U.S., traced to the filing, Fiscal.ai; for prices direct from the exchanges, across asset classes, Massive; for seeing who is behind a wallet, from inside the assistant, Nansen; for finished research across stocks and crypto, rather than raw data, AstraEye Labs. AstraEye Labs publishes this page and makes one of the tools on it. These are read from each tool's own pages; we did not run the tools.
Sources: Alpha Vantage, API Documentation; CoinGecko, CoinGecko MCP; Financial Datasets, Stock Market API for AI Agents; Fiscal.ai, Fiscal.ai API Documentation (index); Massive, Stock Market API; Nansen, Nansen API: Connectors, accessed November 4, 2026
As of 2026-11-04, from their own pages: Alpha Vantage: An official MCP server with Add to Claude and Add to ChatGPT links. You authorize it with your free API key. CoinGecko: An MCP server that can be added to Claude in its connector settings, including a free keyless server on shared rate limits; its documentation says any MCP client can use it. Financial Datasets: A hosted MCP server listed in Claude's Connectors Directory and ChatGPT's Plugin Directory. Interactive clients sign you in, with no API key. Fiscal.ai: A connector in Claude's directory and an app in ChatGPT, plus Gemini Enterprise and Microsoft 365 Copilot, and an MCP server for other clients. Massive: A hosted MCP server with OAuth sign-in and nothing to install, with setup guides for Claude Desktop and ChatGPT. Nansen: Connectors for ChatGPT (from its plugin directory), Claude (from its connector directory) and Grok, signed in with a Nansen account; data calls spend that account's API credits.
Sources: Alpha Vantage, Alpha Vantage MCP Server; CoinGecko, CoinGecko MCP; Financial Datasets, Financial Data MCP Server; Fiscal.ai, MCP / Connectors; Massive, AI Tools Quickstart; Nansen, Nansen API: Connectors, accessed November 4, 2026
No. It provides reports, not raw market data downloads or a market data API. From an assistant it gives you research: your finished reports, and new research priced before it runs. For raw data, this page names: for a free key across daily prices, company statements and economic indicators, Alpha Vantage; for crypto market data with no key and no sign-in, CoinGecko; for company data with its accuracy check published, Financial Datasets; for company fundamentals beyond the U.S., traced to the filing, Fiscal.ai; for prices direct from the exchanges, across asset classes, Massive; for seeing who is behind a wallet, from inside the assistant, Nansen.
No. Each tool is named for one job, on a criterion stated beside it. The connectors for data are alphabetical, and AstraEye Labs comes last because it gives an assistant research rather than data. Nothing here rates one tool above another overall or says what to buy or sell.
A report does not link each figure to the filing or data row it came from, and its public version leaves out the detailed data tables. Its stock, ETF and mutual fund coverage is U.S. only, and a mutual fund is covered only once it is tracked, without the company analyses or the market-wide scans. It provides reports, not raw market data downloads or a market data API. Each research run is priced in Astra Credits, so it is built for reports, not for many quick lookups through the day. A report does not say what time of day a coin's price and indicator figures were read. It is a new company with few independent reviews so far.
Yes. AstraEye Labs connects to ChatGPT, Claude, Gemini, Perplexity, Grok or Glama as an app, so the assistant can read your finished reports and their methods, ask SAGE about them, and price and start new research.
There is a free plan, and paid plans start at $19 a month (Space Analyst). New accounts get a 7-day trial with no card. Every research run shows its price in credits before it starts.
Alpha Vantage, CoinGecko, Financial Datasets, Fiscal.ai, Massive and Nansen are named here only to identify their products, and each name belongs to its owner. AstraEye Labs is not affiliated with, sponsored by or endorsed by any of them. Every fact about another product on this page comes from that product's own public pages as of 2026-11-04 and is linked beside it; products and prices change, so check their pages for the current terms. If a fact here is out of date, tell us and we will correct it.