Happenstance

Describe the person you need in plain language — 'a healthcare CTO in Boston who sold their last company' — and Happenstance searches across every connection in your linked accounts, returning results ranked by how well you actually know each person.

For every search result, Happenstance maps the relationship chain between you and the target person, showing mutual connections and the strength of each link so you can pick the strongest path to a warm introduction.

Join groups (like PEF or your fund's network) and search across the combined connections of every member — dramatically expanding your reachable network beyond your own first and second-degree contacts.

Results are sorted by real relationship signals — email frequency, meeting history, social interactions — not just profile data. The people you actually talk to surface first, so you reach out through your strongest connections.

Works inside the tools you already use: ChatGPT plugin, Claude and Claude Code via MCP, Slack bot for team-wide searches, plus an HTTP API and CLI (brew install happenstance) for power users.

Full HTTP API with authentication, MCP protocol support for AI agent integration, and a Homebrew-installable CLI for terminal-native search. Build Happenstance into your existing deal flow or recruiting workflows.

SOC 2 certified with DTI Trust Level 2 accreditation. Granular privacy controls for public profiles, your data is never used for AI model training, and you control exactly which accounts and connections are searchable.

Connects Gmail, LinkedIn, X (Twitter), Google Calendar, Outlook, and Google Contacts to build a comprehensive map of your professional relationships — ranked by strength, recency, and interaction frequency.