Get connected

1. Set up your account#

Sign in to First100, choose a plan, and connect the social accounts you want to use in Accounts. Social publishing supports X, LinkedIn, Threads, and Bluesky. Audience research and website analysis do not need a social connection. For outreach, have your own email provider’s SMTP settings ready.

2. Choose how to connect#

ChatGPT and Claude use browser sign-in, so you can skip creating a key. For clients that use a key, open API key, generate a key, and copy it while it is shown. Keep it private and replace f100_your_key in the setup examples with your actual key.

You can replace or revoke your key from the same page. Replacing it means updating the clients that use it.

3. Add First100 to your agent#

For Claude Code, run:

claude mcp add --transport http first100 https://firsthundred.app/api/mcp \
  --header "Authorization: Bearer f100_your_key"

Using claude.ai, Claude Desktop, or ChatGPT? Add https://firsthundred.app/api/mcp as a custom connector and sign in; no key needed. For Codex, Cursor, and other agents, follow client setup.

4. Check the connection#

Use First100 to check my account status and list my connected accounts.

Your agent should return your account and connection details. Check that they match the account and platforms you intend to use; installing a configuration alone does not confirm access. Once those look right, share your product, audience, and goal. See what First100 can do for ideas.