Bullpen
AI sales team that works the phone: gets a real person on the line. Agents sign up by paying (MPP).
Install
Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).
claude mcp add --transport http bullpen 'https://bullpen.sale/mcp'{
"mcpServers": {
"bullpen": {
"type": "http",
"url": "https://bullpen.sale/mcp"
}
}
}Documentation
From the project's README on GitHub, refreshed weekly. Links open on GitHub.
Contents
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: 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/bullpenin 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/mcpCursor, 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 |
Every tool carries a title and readOnlyHint / destructiveHint / openWorldHint annotations.
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_idandbalance_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, $5 per human reached, $0.03 per text, $3/month per number. New workspaces start with $10. 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 athttps://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.
Frequently asked questions
What is Bullpen?
AI sales team that works the phone: gets a real person on the line. Agents sign up by paying (MPP).
How do I install Bullpen?
It runs as a remote server. In Claude Code: claude mcp add --transport http bullpen 'https://bullpen.sale/mcp'. For other clients, paste the JSON configuration from this page into their MCP settings.
Does Bullpen need an API key?
Its registry entry lists no required key or secret. Some features may still need an account with the service it connects to.
Is Bullpen open source?
Its code is public on GitHub, but the repository does not declare a standard license.
Who maintains Bullpen?
It is published by GreatPyreneseDad. AI.tn lists it but does not maintain or endorse it.
From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.