Finnhub for AI agents
Finnhub provides real-time market data, company fundamentals, financial news, and economic data through a REST API, used by fintech and research applications. Connect it once through Arc0, and your agent, or Claude, ChatGPT and Cursor, can use it through one MCP endpoint, limited to what each user approved.
What agents do in Finnhub.
Check a company's profile
Get a company's profile and financial metrics before including it in a research summary.
Pull recent earnings results
List earnings results for a ticker to check whether a company beat expectations.
Read-only market status checks
Get market status as a read-only check before deciding whether to pull a fresh quote.
11 Finnhub actions, graded by risk.
Every Finnhub action is tagged read, write or destructive, so one policy covers the whole app and new actions inherit the right default.
read
11Look things up. Allowed by default.
- finnhub.get_quoteGet Quote
- finnhub.get_quotesGet Quotes
- finnhub.search_newsSearch News
- finnhub.search_symbolsSearch Symbols
- finnhub.list_sec_filingsList SEC Filings
- finnhub.get_market_statusGet Market Status
- finnhub.get_company_profileGet Company Profile
- finnhub.list_calendar_eventsList Calendar Events
- finnhub.list_earnings_resultsList Earnings Results
- finnhub.get_reported_financialsGet Reported Financials
- finnhub.get_company_financial_metricsGet Company Financial Metrics
write
0Create and change things. Allow, or ask the user first.
- No write actions.
destructive
0Delete, cancel or archive. Ask first, or deny outright.
- No destructive actions.
Finnhub in three steps.
- 01Your users connect FinnhubThey add their Finnhub api key on Arc0 Connect, under your brand. It goes straight into the vault.
- 02You set the rulesReads run, and writes like “updates” can wait for the user to approve.
- 03Any agent can actYour agent calls Finnhub through the Arc0 SDK or MCP, and so can Claude, ChatGPT and Cursor. Every call lands on the audit log.
await arc0.policies.set('finnhub', { read: 'allow', write: 'ask', destructive: 'deny', }) # Claude Code: the same connection, one URL $ claude mcp add --transport http arc0 \ https://mcp.arc0.ai/u/u_8f2
How Finnhub connects.
Users add their Finnhub api key on Arc0 Connect. It is encrypted in the vault, never shown to the model, and each user can rotate or revoke it at any time.
The same Finnhub connection serves your agent over MCP and your own backend over REST and the proxy, so a user connects once. How Arc0 handles credentials →
- AUTH
- API key
- CREDENTIALS
- Per-tenant encrypted vault
- MODEL SEES
- Results only, never credentials
- AUDIT LOG
- Every call, on every plan
Use Finnhub from any agent.
ClaudeChatGPTCursor
Codex
VS CodeOpenAI Agents SDKClaude Agent SDK
Vercel AI SDK
Mastra
LangGraph
Finnhub and Arc0, answered.
Can I use Finnhub with Claude, ChatGPT or Cursor?
Yes. Connect Finnhub to Arc0 once, then add your Arc0 MCP URL to Claude, ChatGPT, Cursor, Claude Code or any other remote-MCP client. Each assistant only gets the Finnhub actions you allow.
How do users connect Finnhub?
Users add their Finnhub api key on Arc0 Connect. It is encrypted in the vault, never shown to the model, and each user can rotate or revoke it at any time.
Which Finnhub actions can my agent take?
11 in total: 11 read, 0 write and 0 destructive. Your policies decide which of them each agent may call.
Can I make my agent read-only in Finnhub?
Yes. Allow read actions and deny writes in the Finnhub policy. Your agent can still look things up, and any write it attempts is blocked and logged.
Can my own backend call Finnhub too?
Yes. The same Finnhub connection is available over REST and through the Arc0 proxy, so your product and your agent share one connection per user.
Plug Finnhub into your agent.
Your users connect Finnhub once, under your brand. Your agent gets 11 actions behind your policies, with every call on the record.
Free to build · MCP + REST · Audit log on every plan