Bullpen

official

AI sales team that works the phone. The crew gets past phone trees, hold and AI receptionists to a real person, then rings your rep into the live call. Remote, OAuth.

GitHub

What can you do with Bullpen MCP?

Run the bullpen in plain language — Ask Herman for status, companies, or campaigns, and have him send the crew; anything outbound returns as a pending action to confirm.
Reach a real person by phone — The crew dials, works phone trees and hold queues, then connects you once a human answers.
Research and find companies — Find companies to sell to with main phone lines and websites, and learn who to ask for at each one.
Query your own workspace knowledge — Answer questions from your calls, notes, and docs, with sources cited.
Onboard a new workspace — Check what's left before every feature works, then switch on Herman, buy a line, set your mobile, and invite teammates.
Run calling campaigns — Create a campaign, import contacts from a CSV, and work it.

Hosted MCP Server

npx add-mcp 'https://bullpen.sale/mcp'

Installs into Claude Code, Codex, Cursor and more

Documentation

Bullpen MCP server

Bullpen is an AI sales team that works the phone. A crew of AI callers, each with its own number and voice, gets through phone trees, hold queues and AI receptionists to a real person, then drops your rep into the live call. Every call writes to Salesforce. Herman, the manager agent, runs the whole bullpen in plain language and asks before anything leaves the building.

This repository documents Bullpen's remote MCP server. There is nothing to install or host, and a new workspace starts with $10 of credits free (no card). The server runs at

https://bullpen.sale/mcp

Transport: Streamable HTTP (stateless, JSON responses)
Auth: OAuth 2.1 with PKCE and dynamic client registration, or a workspace API key
Registry: sale.bullpen/bullpen in the official MCP Registry
Site: bullpen.sale · Docs: bullpen.sale/docs · For LLMs: bullpen.sale/llms.txt

Connect

Claude (claude.ai, desktop, mobile) Settings → Connectors → Add custom connector → https://bullpen.sale/mcp. The first tool that needs your workspace sends you to bullpen.sale to sign in and click Allow.

Claude Code

claude mcp add --transport http bullpen https://bullpen.sale/mcp

Cursor, VS Code, and other MCP clients

{
  "mcpServers": {
    "bullpen": { "url": "https://bullpen.sale/mcp" }
  }
}

With an API key instead of OAuth (scripts, servers, headless agents): make a key at bullpen.sale/app/settings/api and send it as a header:

Authorization: Bearer bp_live_...

Tools

Tool	Needs sign-in	What it does
`bullpen_about`	no	What Bullpen is, what it costs, how an agent gets a workspace
`bullpen_signup`	no	Start a paid signup ($25–$500 in credits) with the Machine Payments Protocol; returns the 402 challenge
`whoami`	yes	Workspace, member and role the token acts as
`credits_status`	yes	Prepaid balance and recent usage
`top_up_credits`	yes	Start an MPP credit top-up ($5–$500)
`ask_herman`	yes	Talk to Herman, who runs the bullpen: status, companies, campaigns, sending the crew
`confirm_herman_action`	yes	Confirm or cancel a call, text or Salesforce update Herman proposed
`ask_brain`	yes	Answer from the workspace's own calls, notes and docs, with sources
`find_companies`	yes	Find companies to sell to, with main phone lines and websites
`research_company`	yes	Who to ask for at a company
`get_a_human`	yes	The crew dials, works the menu and hold, gets a real person, then connects you
`knock`	yes	Reach a human at a company's main line and leave a short hello
`send_text` / `send_email`	yes	Send from the workspace's line or agent inbox
`floor_state`	yes	Live and recent crew calls
`create_campaign` / `import_campaign_contacts` / `work_campaign`	yes	Run a calling campaign from a CSV
`watch_companies`	yes	Watch companies for buying and risk signals
`onboarding_status`	yes	What's left before every feature works, in order, with the tool or link for each
`turn_on_herman`	yes	Switch Herman on
`get_outbound_agreement` / `accept_outbound_agreement`	yes	Read the compliance agreement; accept with the person's typed name, only after they agree
`search_numbers` / `buy_number`	yes	Find a line and buy it from credits ($3/month); a crew member goes on it
`hire_crew`	yes	Put AI crew members on any free lines
`get_team_profile` / `draft_team_profile` / `set_team_profile`	yes	Teach the crew who they work for: name as spoken, product names, tone, house rules, the knock line (drafted from the website; admin saves)
`set_campaign_customs`	yes	Make one campaign sound different from the team default
`rename_crew_member`	yes	Rename a crew member for your culture or region (paid workspaces)
`set_mobile`	yes	The phone that rings when the crew reaches a person (yours, or a teammate's)
`buy_credits`	yes	Card checkout link for credits
`connect_salesforce` / `connect_google`	yes	Approval links the person opens
`invite_teammate` / `list_team`	yes	Invite by email; see members and pending invites
`open_page`	no	Links into the app, including `floor` to watch live calls

Every tool carries a title and readOnlyHint / destructiveHint / openWorldHint annotations.

Onboard from your agent

Your agent can take a new workspace all the way to live calls. Ask it to run onboarding_status and work the list: switch Herman on, read you the compliance agreement and record your yes, buy a crew line from credits, set your mobile, teach the crew who they work for (drafted from your website, saved only when you approve), invite your team. It hands you links for the few steps that happen in your browser (card checkout, Salesforce and Google approval) and a link to the live floor whenever you want to watch.

Agents can hire a bullpen

An agent with a wallet can sign its principal up with no checkout page:

POST https://bullpen.sale/pay/signup?amount=25
Content-Type: application/json

{"owner_email": "ops@yourco.com", "company": "Your Co", "agent_name": "your agent"}

The first request returns 402 with an MPP WWW-Authenticate: Payment … challenge (cards via Stripe Shared Payment Tokens).
Pay and retry with Authorization: Payment ….
The response carries api_key, org_id and balance_cents.

Payable endpoints are described with x-payment-info in bullpen.sale/openapi.json. An agent can also attach an AP2 mandate (X-AP2-Mandate) to prove its principal authorized the spend; Bullpen checks every hop's limits and signs a receipt verifiable at /pay/ap2/jwks.

Guardrails

A person stands behind outbound. Research, Herman, the brain, company search and campaigns work right away. Calls and texts unlock only after a workspace admin accepts the Outbound Compliance Agreement and adds a phone number.
Herman asks first. Anything that reaches the outside world comes back as a pending action; nothing goes out until it's confirmed.
Calling rules: company lines only unless the person gave written consent, calling hours in the callee's time zone, opt-outs honored, and the crew says it's an AI when asked.
Permissions: a token acts as the member who approved it, in that workspace, with that member's role. It can't buy numbers, change billing, connect accounts or invite people. Revoke it any time in Settings → API keys.

Pricing

Usage-based, prepaid credits: $0.30 per crew minute (no extra charge for reaching a human), $0.03 per text, $3/month per number. New workspaces get $10 of credits free, no card — a phone number and about 20 minutes of crew calls. Spending tools return a 402 error at zero. Full table: bullpen.sale/pricing.

Other ways in

A2A: Herman is an A2A agent. Card at /.well-known/agent-card.json, JSON-RPC at https://bullpen.sale/a2a.
REST API + CLI: one POST endpoint, every action documented at bullpen.sale/docs. curl -fsSL https://bullpen.sale/install.sh | sh

Discovery documents

Path	What
`/.well-known/oauth-protected-resource/mcp`	OAuth protected resource metadata (RFC 9728)
`/.well-known/oauth-authorization-server`	Authorization server metadata (RFC 8414)
`/.well-known/mcp/server-card.json`	MCP server card
`/.well-known/agent-card.json`	A2A agent card
`/openapi.json`	OpenAPI 3.1 with MPP `x-payment-info`
`/llms.txt`	Summary for language models

Support

office@roseglass.dev · bullpen.sale · Privacy · Terms

Bullpen is built by RoseGlass Corp.