The NFX Signal Investor API turns Signal by NFX investor lists into structured JSON: check sizes, stages, sectors, locations, and profile links for VC investors and their firms, no login required. If you are raising and need a real target list instead of a spreadsheet you copied from a blog post, this builds one you can filter and sort.

What you get per investor

Each row carries the investor name, position, and firm, the minimum, target, and maximum check size, the investment locations, the list memberships, and links to the person and firm profiles. Optional LinkedIn and Crunchbase enrichment adds firm industry, size, follower count, employee count, and status so you can qualify a firm before you reach out.

Three modes

Investors returns the people on a given list with their check sizes and stages. Firms returns the firm directory behind a list. Lists returns the catalog of NFX investor lists with the investor count, stage, and vertical for each, so you can pick which lists to pull before you spend anything.

What people build with it

Founders build a stage-matched and sector-matched outreach list with the check size attached, so a pre-seed founder is not emailing a growth fund. Analysts pull a whole vertical into a sheet to map who is active in a space. Data teams use it as a lighter, pay-per-result alternative to a full seat on a funding database when all they need is the investor and firm layer as JSON.

Works with MCP

The Actor is MCP-ready, so through Apify's MCP server it becomes a tool that Claude, Claude Code, or Cursor can call directly. Ask "list the seed-stage fintech investors on NFX with their check sizes" and it returns structured rows, no scraping code involved.

How to run it

Open the NFX Signal Investor API, click Try for free, pick a mode and a list, then run it and export JSON, CSV, or Excel. You pay per result, so a run costs what you pull and nothing more. New Apify accounts include free platform credit to test with.

Limits

It reads the investor and firm data that NFX exposes publicly on its lists. Firm depth beyond the name and profile link comes from the optional enrichment toggles. It does not make introductions or send outreach; it builds the list you work from.

Keywords & Topics

NFX Signal investor export, Signal by NFX scraper, VC investor database API, how to find investors, pre-seed and seed investor list, list of VC firms, check size data, deal sourcing, Crunchbase alternative, PitchBook alternative, fundraising research, MCP tool for investor research.