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Harmonic from the command line

Startup and company data, founders, funding and team networks. GBrain gives Harmonic, and every other application you connect, a command line.

Get Personal, $49 a month

One price for one person: Harmonic and every other application GBrain connects, from a terminal or any AI. Cancel any time.

Install the GBrain command line, then connect Harmonic

Harmonic is connected on its own sign-in page, in the browser. A key or a sign-in never passes through the terminal. 

# AI agents: read gbrain.io/llms.txt
curl -sSL https://gbrainio.terminalwire.sh | bash
gbrainio terminal connect

The installer is a shell script for macOS and Linux. Read it before you run it. 

# Every Harmonic command, once Harmonic is connected
gbrainio tool help harmonic

What GBrain can do with Harmonic

Harmonic keeps data on millions of companies and the people behind them: funding, location, founders and network connections. Connected to a workspace, GBrain can answer “which seed-stage climate startups in Berlin raised this year?” or find who on the team knows a company’s founders.

  • Search and enrich companies and people
  • Read saved searches and what is new in them
  • Map the team's connections to a company
  • Build lists of companies and people

What a terminal may do with Harmonic, and what GBrain keeps

Off or On, for each terminal

Each terminal reaches Harmonic at the level set for it in the browser: Off, or On, which is every command Harmonic's server lists. A terminal reads its level and never raises it.

1,000 actions a day for each command

Each of Harmonic's commands stops at 1,000 actions a day on the account it reaches, whichever terminal or AI asks, and starts again at midnight UTC. Only that command stops.

Every action on one record

Each command a terminal runs on Harmonic is a row on GBrain's activity log: which terminal, which account, what it did and whether it was allowed, refusals included. gbrainio activity ls --tool harmonic reads it back.

From a terminal, Claude Code or Codex

Harmonic's own server lists its commands only to a terminal that has connected it, so they are not on this page. Once Harmonic is connected, gbrainio tool help harmonic says what each of them does, and gbrainio tool ls lists them with everything else the terminal can run. Claude Code and Codex run the same commands, at the same level, on the same record.

From Harmonic

GBrain reaches Harmonic at its own server, mcp.api.harmonic.ai. On Harmonic's own pages: its website, how the connection works, its terms of service and its privacy policy.

The GBrain Tools command line works with every other application GBrain connects, each with a page like this one.

Every application's command line

Harmonic from a terminal, with GBrain Personal

Personal is $49 a month for one person. Connect Harmonic in the browser, and say how far each terminal and each AI may go with it. Change any of it, or take all of it back, whenever you want.

Get Personal, $49 a month