{"slug": "show-hn-wealthnow-a-read-only-financial-data-mcp-server-with-oauth-sign-in", "title": "Show HN: Wealthnow – a read-only financial data MCP server with OAuth sign-in", "summary": "Wealthnow launched a hosted remote MCP server at https://mcp.wealthnow.io/mcp that gives AI agents including Claude, ChatGPT, Cursor and Codex read-only access to its financial data API, with OAuth sign-in replacing API keys. The server uses Streamable HTTP and maps each MCP tool one-to-one to the REST API's 300+ endpoints across 21 data products, drawing on the same credits and plans as REST calls; the free tier offers 1,000 credits a month at 30 requests per minute, while paid tiers run from $99/mo (250,000 credits, 120 req/min) to $999/mo (11,200,000 credits, 1,500 req/min). Tools outside a user's plan return a plan_required error naming the plan that unlocks them, and headless clients can authenticate with a wn_ API key in the X-API-Key header instead of browser sign-in.", "body_md": "# A financial data MCP server your AI agent can sign in to\n\nWealthnow's MCP server gives AI agents such as Claude, ChatGPT, Cursor and Codex read-only access to the Wealthnow financial data API: market data, fundamentals, SEC filings, news, congressional trades, 13F and insider data, options flow, macro, crypto, credit and private markets. It is a hosted remote server using Streamable HTTP. You connect by signing in with OAuth, so there is no API key to paste, and calls use the same credits and plan as the REST API, which has 300+ REST endpoints across 21 data products.\n\n[Get a free API key](https://wealthnow.io/register?next=api&utm_source=static&utm_medium=organic&utm_campaign=mcp-hub)1,000 free credits a month\n\n## Connect in one step\n\n| Client | How | \n|---|---|\n| Claude (web, Desktop, mobile) | Settings, Connectors, Add custom connector, paste `https://mcp.wealthnow.io/mcp` , then Connect and sign in to Wealthnow. | \n| Claude Code | `claude mcp add --transport http wealthnow https://mcp.wealthnow.io/mcp` , then run`/mcp` and choose Authenticate. | \n| Cursor | [Add to Cursor](cursor://anysphere.cursor-deeplink/mcp/install?name=wealthnow&config=eyJ1cmwiOiJodHRwczovL21jcC53ZWFsdGhub3cuaW8vbWNwIn0=) (Cursor asks you to confirm), then sign in in the browser. | \n| VS Code | [Add to VS Code](vscode:mcp/install?%7B%22name%22%3A%22wealthnow%22%2C%22type%22%3A%22http%22%2C%22url%22%3A%22https%3A%2F%2Fmcp.wealthnow.io%2Fmcp%22%7D) , then sign in in the browser. | \n| ChatGPT | Settings, Apps, Advanced settings, Developer mode, Create; paste the MCP URL above, choose OAuth and sign in. | \n| Codex | `codex mcp add wealthnow --url https://mcp.wealthnow.io/mcp` , then`codex mcp login wealthnow` . | \n| Any other client | Send your `wn_` API key in the`X-API-Key` header (or`Authorization: Bearer wn_…` ). | \n\nThen ask: \"Using Wealthnow, which members of Congress disclosed trades in NVDA this year, and which funds added it last quarter?\"\n\n```\n# Claude Code on a headless machine (an API key instead of browser sign-in)\nclaude mcp add --transport http wealthnow https://mcp.wealthnow.io/mcp \\\n  --header \"X-API-Key: wn_YOUR_KEY\"\n```\n\n## What your agent can reach\n\nTools map one-to-one to the REST API: each MCP tool name is the OpenAPI operationId, with the same parameters. The default list shows the tools your plan includes plus two free helpers, `account_status` (your plan, remaining credits and entitlements) and `search_tools` (find tools by topic). Add `?catalog=full` to the server URL to list every public tool.\n\n| Plan | Price | Credits / month | Rate limit | Adds | \n|---|---|---|---|---|\n| Free | $0 | 1,000 | 30 req/min | Market Data · Fundamentals & Financials · SEC Filings | \n| Starter | $99/mo | 250,000 | 120 req/min | Congressional / Politician Trades · Equity News & Sentiment + Zacks EPS estimates & surprises · Macro, Rates, FX & Commodities · Quant Signals + real-time SSE streams (quotes · bars · trades) · Funds, Institutional & Insider · Crypto Market Data | \n| Pro | $499/mo | 2,000,000 | 600 req/min | Alt-Data · Options Flow & Dealer Positioning · Volatility & Positioning · Execution & Research · LLM Research · Risk Analytics · Private Markets · Tape & Intraday History · Credit & Fixed-Income: bond prints, CDS, ratings, loans, CDX/iTraxx indices · Transcripts & Corporate Events · Crypto History · Social Sentiment | \n| Expert | $999/mo | 11,200,000 | 1,500 req/min | 10,000,000 credits plus the Private Markets Pro pack (1,200,000 credits a month), included · Overage at $0.0005 a credit, up to a 50,000,000-credit ceiling · The highest self-serve rate limit | \n| Enterprise | Contact | Custom | Custom | Expert plus custom limits, invoicing and support | \n\nEach plan includes everything in the plans above it. A tool outside your plan returns a `plan_required` error naming the plan that unlocks it, rather than failing silently. MCP calls cost the same credits as REST calls. Details: [API pricing](https://wealthnow.io/api#pricing) and [credits](https://app.wealthnow.io/docs/pricing-and-credits).\n\n## Built for agents\n\n- **Read-only by design:** every tool carries the MCP annotation`readOnlyHint: true` . No tool changes your account or places orders.\n- **Sign-in instead of secrets:** OAuth 2.1 with PKCE. Each connected agent gets its own revocable key that the agent never sees, so you can revoke one agent without touching your other keys.\n- **Stated freshness:** quotes say how old they are.\n- **Streams stay on REST:** the server-sent-event streams are REST-only, because MCP cannot relay a stream.\n\n## Frequently asked questions\n\n### What is a financial data MCP server?\n\nAn MCP (Model Context Protocol) server exposes data tools that AI agents can call directly. A financial data MCP server lets an assistant like Claude or ChatGPT fetch quotes, filings or fundamentals itself instead of guessing from training data.\n\n### Is the Wealthnow MCP server free?\n\nThere is a Free plan with 1,000 credits per month at 30 requests per minute, covering market data, fundamentals & financials, sec filings. Congressional, 13F and insider data start on Starter ($99/month).\n\n### Can the MCP server place trades?\n\nNo. Every tool is read-only (readOnlyHint: true) and no tool places orders or changes your account.\n\n### Is it investment advice?\n\nNo. The MCP server returns market data and analytics for software developers. It is not investment advice.\n\n### Which AI clients work with it?\n\nClaude (web, Desktop, mobile and Claude Code), Cursor, ChatGPT in developer mode, Codex, and any client that can send an API key header.\n\n### Do MCP calls cost more than REST calls?\n\nNo. Tool calls use the same credit costs and plan access as the REST API. account_status and search_tools are free to call.\n\n### Is there an OpenAPI spec?\n\nYes: https://firm.wealthnow.io/api/openapi.json. MCP tool names match its operationIds.", "url": "https://wpnews.pro/news/show-hn-wealthnow-a-read-only-financial-data-mcp-server-with-oauth-sign-in", "canonical_source": "https://wealthnow.io/mcp", "published_at": "2026-11-09 16:23:46+00:00", "updated_at": "2026-11-09 16:53:40.629934+00:00", "lang": "en", "topics": ["ai-agents", "agent-protocols", "ai-tools", "ai-products"], "entities": ["Wealthnow", "Claude", "ChatGPT", "Cursor", "Codex", "Visual Studio Code", "Anthropic", "OpenAI"], "also_reported_by": [], "alternates": {"html": "https://wpnews.pro/news/show-hn-wealthnow-a-read-only-financial-data-mcp-server-with-oauth-sign-in", "markdown": "https://wpnews.pro/news/show-hn-wealthnow-a-read-only-financial-data-mcp-server-with-oauth-sign-in.md", "text": "https://wpnews.pro/news/show-hn-wealthnow-a-read-only-financial-data-mcp-server-with-oauth-sign-in.txt", "jsonld": "https://wpnews.pro/news/show-hn-wealthnow-a-read-only-financial-data-mcp-server-with-oauth-sign-in.jsonld"}}