API changelog

New tools, parameters and fields can arrive at any time; breaking changes are announced here before they take effect. What counts as breaking is set out in Changes and versioning.

Oct 7, 2026#Link to this section

The API and MCP server launch#Link to this section

• MCP server at https://api.fundalyze.ai/mcp and REST API at https://api.fundalyze.ai/api/public/v1, serving the same tools. Included in every paid plan and the free trial.
• Eight tools: search_companies, get_company, get_financials, list_filings, get_insider_trades, get_congress_trades, get_headlines and get_economy.
• API keys in Account → API & MCP: up to 3 per account, shown once, revocable at any time.
• Limits: 2,000 calls per key per UTC day, REST and MCP together, and one call at a time per key. Successful REST responses carry X-Quota-Remaining.
• Public catalogue and OpenAPI document, no key needed: GET /api/public/v1/tools and GET /api/public/v1/openapi.json.

Connectors with OAuth sign-in#Link to this section

• Claude (Desktop and claude.ai), ChatGPT and other MCP clients that support OAuth can connect by signing in to Fundalyze and choosing Allow, with no key to copy. Each connection has its own daily quota and can be disconnected under Account → API & MCP → Connected apps. See Authentication.

Usage in your account#Link to this section

• Account → API & MCP shows calls per day for the last 30 days, broken down by key and connected app.

Credits#Link to this section

• Every successful call is recorded against your account's credit balance. Credits are not enforced: nothing is blocked when a balance runs out. Enforcement will be announced here before it starts. See Credits.

New datasets#Link to this section

Ten tools on top of the first eight:

• Ownership and leadership: get_leadership (founders and control, the CEO, CEO pay by year), get_institutional_holders (the latest 13F holders of a stock), get_short_interest (FINRA short interest by settlement date, with FINRA's attribution) and get_investor (a fund's or super investor's 13F holdings and quarter-over-quarter changes).
• Financials and filings: get_reported_financials (statements exactly as filed, values by business segment and geography, and material changes between filings) and get_filing_summary (AI summaries that already exist for a filing, with their citations).
• Trading activity: get_insider_feed (open-market insider trades across all companies, or cluster buys) and get_congress_feed (congressional trades across all companies, filterable by member, party and chamber).
• Companies and screening: get_peers (our researched peer list for a company) and screen_companies (filter and sort companies on public-record metrics).

Documentation#Link to this section

• These docs: quickstarts, concepts, a reference page per tool with a worked example from real data, the data dictionary, an API explorer, /llms.txt and a Markdown version of every page.
• GET /api/public/v1/dictionary (no key): every metric key get_financials accepts, and the metrics screen_companies can filter on.
• https://api.fundalyze.ai/docs now leads to the API reference.