Connect Breakpoint Engine

Breakpoint Engine exposes a hosted MCP interface that compatible AI clients use to perform deterministic financial-engineering calculations. Connect once, then work through your financing conversationally — your AI reasons, Breakpoint Engine calculates.

New here? Start with the full walkthrough on Get started, or jump to a step-by-step client guide: Claude, ChatGPT, Cursor & VS Code.

Built for agentic valuation

Your AI explores and queries the capital structure, pauses at breakpoints, mutates assumptions mid-valuation, and compares branches — without Breakpoint Engine ever holding your cap table or issuing an opinion.

Explore & query — securities, breakpoints, claims, allocations, txn log as structured frames the agent can reason over.
Pause & mutate — opm_scenario_begin stops after schedule build; step tranche-by-tranche; mutate prefs, participation, warrants, assumptions; auto-rewind and replay from a safe checkpoint.
Branch & diff — name branches, compare allocations and strikes, commit a completed txn or abort; scenarios live in-process for the session.
Batch when you want speed — opm_forwardsolve / opm_backsolve for full runs with work estimates and live progress.

Connection

Endpoint: https://cloud.breakpointengine.com/mcp (Streamable HTTP, Auth0 OAuth — hosts self-register, so the URL is all you need). Sign in, add credits on account, then connect your client:

{
  "mcpServers": {
    "breakpointengine": {
      "url": "https://cloud.breakpointengine.com/mcp"
    }
  }
}

Claude — Settings → Connectors → custom connector → the URL above + OAuth. The easiest conversational path.
ChatGPT — custom MCP connector + OAuth, where your OpenAI plan or workspace supports custom connectors.
Cursor — full walkthrough (Settings → MCP, Enable, Connect). Quick path: paste the JSON above; reload; click Connect.
VS Code — Copilot Agent + .vscode/mcp.json with "type": "http" (1.101+); Start the server, then OAuth.
Claude Code — claude mcp add --transport http --scope user breakpointengine https://cloud.breakpointengine.com/mcp then /mcp.

Flow: opm_estimate to preview the cost → execute. The service sizes the job, admits it against your balance, and caps the charge at its own quote. Packs: Explore / Round / Raise.

Tool surface

The hosted service serves 15 tools. Money and rates as decimal strings.

opm_forwardsolve opm_backsolve opm_estimate opm_explain_breakpoints opm_scenario_begin / step / query opm_scenario_mutate / rewind / branch opm_scenario_diff / commit / abort opm_cancel · opm_schema

Full descriptions on the tool reference; input format on preparing capitalization inputs.

Discovery: /.well-known/mcp.json, /llms.txt