Model Context Protocol (MCP) server for Apollo.io API integration
Nothing to run from here
Bullpen is installed from its publisher's own source and answers where it runs, so this marketplace is not in the path of a single call. There is no address here to send one to, and a panel that pretended otherwise would be showing you an answer we made up. Install it and call it from your own client — the Installation tab has the entry for each one.
93/100
tool-list score
19
tools declared
remote
at its publisher
—
calls last 7d
What it does
AI sales team that works the phone: gets a real person on the line. Agents sign up by paying (MPP).
Quickstart
# 1 — add it to Claude Code
claude mcp add --scope user --transport http bullpen-mcp https://bullpen.sale/mcp
# 2 — ask your agent for something these tools do
# bullpen_about, bullpen_signup, whoami and 16 more
Bullpen costs nothing on mcprush: there is no plan to choose here, no cap to set and nothing mcprush can bill you for.
Publishernot claimed
BUAll 1 server
bullpen1 server
1 category
Collected from a public index. Nobody has claimed this account, so nothing here was written by its author — claim it if it is yours.
Installation
Where are you running it?
Every route below installs the same thing and ends at the same approval screen. Nothing here runs on your machine and nothing runs on ours: this server answers at its publisher’s own address, and what you install is the connection straight to it.
Claude Codedeclared by this listing
This is a public server: it answers at its publisher’s own address and this marketplace is not in the path. Claude Code registers it in one command; --scope user makes it available in every project. The transport below is http, as the publisher's own manifest declares it.
claude mcp add --scope user --transport http bullpen-mcp https://bullpen.sale/mcpReconnect, or start a new session, and the tools appear in the model’s tool list.
Free on mcprush, and it answers at its publisher’s own address: this marketplace is not in the path, so there is no key of ours to hold and no card to add.
What it writes
One config entry pointing straight at the publisher’s own address — this marketplace is not in the path, and nothing from this listing executes on your machine.
What you approve
19 tools, with what each one reads, writes and reaches shown before you agree — the same list on every route above. Read the tool surface.
Tool surface
What the model actually sees. Descriptions are diffed on every release — see version history.
What Bullpen does, what it costs, and how an agent gets a workspace and API key. Call this first if you have no key. (No API key needed.)
No parameter schema on file.
Start creating a Bullpen workspace for your principal by paying with the Machine Payments Protocol (MPP, Stripe). Returns the 402 payment challenge and the exact URL to retry with your MPP client (e.g. npx @stripe/link-cli mpp pay <url>). The paid retry returns an api_key; pass it to this MCP server as Authorization: Bearer bp_live_…. $25–$500, all of it becomes credits, plus $10 free. (No API
| Parameter | Type | Required | Notes |
|---|---|---|---|
| owner_email | string | yes | Email of the person who will own the workspace. They get an invite. |
| company | string | yes | Company name for the workspace. |
| agent_name | string | no | Your name, shown in the workspace log. |
| owner_name | string | no | Owner's name, optional. |
| amount | number | no | USD to load as credits, 25–500. Default 25. |
The workspace, member and role this API key acts as.
No parameter schema on file.
Prepaid credit balance and recent usage. Spending tools return a 402 error at zero.
No parameter schema on file.
Start an MPP credit top-up ($5–$500). Returns the 402 challenge and the URL to pay and retry with your MPP client, sending your key as X-Bullpen-Key.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| amount | number | yes | USD, 5–500. |
Talk to Herman, the manager agent who runs the whole bullpen in plain language: status, finding companies, running campaigns, sending the crew to call. Anything that reaches the outside world comes back as a pending action with an id — nothing goes out until confirm_herman_action.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| message | string | yes | What you want, in plain words. |
Run or drop a pending action Herman proposed (a call, text or Salesforce update). Only confirm what your principal actually wants.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| id | string | yes | Pending action id from ask_herman. |
| decision | string | yes | — |
Answer a question from the workspace's own knowledge (calls, notes, docs), with sources, limited by the key's role.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| question | string | yes | The question. |
Search for companies to sell to (e.g. 'HVAC companies in Salt Lake City'). Returns names, main phone lines and websites.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| query | string | yes | Who you're looking for, with place. |
| max | number | no | Max results, default 20. |
Who to ask for at a company returned by find_companies.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| id | string | yes | Company id from find_companies. |
A crew member dials the number, works the phone menu, hold and AI receptionist until a real person answers, then connects the key's owner into the live call. Spends credits ($5 per human reached). Company lines only unless the callee gave written consent.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| to | string | yes | E.164 phone number, e.g. +18015551234. |
| target | string | no | Who to ask for. |
| why | string | no | One line on why we're calling. |
Reach a human at a company's main line and leave a short hello pointing to your principal. Business hours, once a week per company. Spends credits.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| to | string | yes | Company main line, E.164. |
| company | string | yes | Company name. |
| target | string | no | Who to ask for. |
| note | string | no | What to leave. |
Text from the workspace's line. Opt-outs are honored. Spends credits.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| to | string | yes | E.164 number. |
| body | string | yes | Message. |
Email from the workspace's agent inbox.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| to | string | yes | Recipient. |
| subject | string | yes | Subject. |
| text | string | yes | Plain-text body. |
| cc | string | no | Optional cc. |
Live and recent crew calls.
No parameter schema on file.
Start a calling campaign. Add contacts with import_campaign_contacts, then work_campaign.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| name | string | yes | Campaign name. |
| goal | string | no | What a win looks like, e.g. 'book a 20-minute demo'. |
Add contacts to a campaign from CSV text (header row: company, phone, name, title, email).
| Parameter | Type | Required | Notes |
|---|---|---|---|
| id | string | yes | Campaign id. |
| csv | string | yes | CSV text. |
Send the crew to work a campaign's contacts now. Spends credits.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| id | string | yes | Campaign id. |
Add companies to Social Intel, which scans them for buying and risk signals.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| names | string | yes | Company names, comma or newline separated. |
Free
$0 forever
- Every tool — any call limit is its publisher’s, not ours
- No card, and mcprush charges nothing for it
- Runs at its publisher’s own address — this marketplace is not in the path
- Nothing to cap, because mcprush bills nothing
What counts against your monthly calls
| Tool | Unit | Calls used | Out of the allowance |
|---|
Nothing here is billable: mcprush charges nothing to install Bullpen or to call it, at any volume.
Call allowance · this installenforced at the gateway
Monthly allowance, in calls
—
—
Alert at 80% · then the tool returns a normal MCP error
Used this month: —
ATool-list grade · score 93 / 100
Release 1.0.2 · scanned 6 Nov 2026
Graded from the tools this server lists, not from its source code.
Two independent axes, because powerful and malicious are different questions. The grade is threat only. The capability level is blast radius, and it is never a penalty on the grade — it is priced as one subtract-only term in the score, where you can see it.
Threat score100
Client score93
Findings0 threat · 0 capability
Capabilitymoderate
Coveragemanifest
Verificationnot in this report
Surface digestc935e41cf36278eb586744f6a0c398aa24922297834dcd5f5cef074f44012ee0
Score vectorthreat 100 → client 93
| Term | Level | What it prices | Points |
|---|---|---|---|
| capability-exposure | moderate | capability blast radius (moderate) — client exposure if the model is manipulated | −3 |
| coverage-honesty | manifest | inspection depth (manifest) — how much of the target the scan could see | −4 |
score = clamp(round(threatScore − E_cap − E_ver − E_cov), 0, 100). No model, no opinion, no network call at scoring time: the same methodology version against the same bytes always produces this number, and every line above is a field of the report rather than a summary of it.
What the scan could actually read
A grade is only as meaningful as its coverage, so the scanner publishes its own depth before it publishes its result.
The scan read each tool’s name, description, input schema and annotations exactly as the server listed them the last time it answered us; no code was reviewed. We ask the server again about once a month, and a list that changed is graded again.
Tool surfaceread
Implementation sourcenot available
Package metadatanot available
Live transportnot available
The implementation source was not read — this reflects the declared tool metadata only.
Capability — what it could do if the model were manipulated
Tags derived from each tool’s schema and the implementation, not from what the tool calls itself. moderate is the level these add up to.
| Tool | Capability tags | Why the tag was assigned |
|---|---|---|
| bullpen_about | no tags | |
| bullpen_signup | external-sink | external-sink: declares readOnlyHint: false, openWorldHint: true |
| whoami | no tags | |
| credits_status | no tags | |
| top_up_credits | external-sink | external-sink: declares readOnlyHint: false, openWorldHint: true |
| ask_herman | external-sink | external-sink: declares readOnlyHint: false, openWorldHint: true |
| confirm_herman_action | external-sink | external-sink: declares readOnlyHint: false, openWorldHint: true |
| ask_brain | no tags | |
| find_companies | state-write | state-write: declares readOnlyHint: false |
| research_company | state-write | state-write: declares readOnlyHint: false |
| get_a_human | external-sink | external-sink: declares readOnlyHint: false, openWorldHint: true |
| knock | external-sink | external-sink: declares readOnlyHint: false, openWorldHint: true |
| send_text | external-sink | external-sink: declares readOnlyHint: false, openWorldHint: true |
| send_email | external-sink | external-sink: keyword "send_email", declares readOnlyHint: false, openWorldHint: true |
| floor_state | no tags | |
| create_campaign | state-write | state-write: declares readOnlyHint: false |
| import_campaign_contacts | state-write | state-write: declares readOnlyHint: false |
| work_campaign | external-sink | external-sink: declares readOnlyHint: false, openWorldHint: true |
| watch_companies | state-write | state-write: declares readOnlyHint: false |
Toxic-flow graph
The lethal trifecta, checked as a graph rather than as a checklist: untrusted input, a sensitive source and an external sink have to meet before there is a path worth worrying about.
The public result for this release does not print the flow graph, so there is nothing to show here. That is not the same as "no paths were found": what the scan did read is above, under coverage.
Supply chain and provenance
Integrityfirst-seen
Surface digestc935e41cf36278eb
Scanned2026-11-06
This is the first scan of this surface here, so there is nothing yet to compare it against.
Every result on this tab comes from one deterministic pass over the published package — offline, rule by rule, and auditable line by line above. Same methodology version, same bytes, same score.
Release history
This is an address its publisher runs: which release it serves is theirs to choose, so there is nothing here to pin. The history below is for reading; the current release on file is 1.0.2.
1.0.2
undated
latestNo release note was published with this version.
—
no reviews yet
Who can review
One review per account, from a signed-in account that does not publish this listing. Nothing else is asked — you can say what you think before you install it. Publishers can reply once per review, and a review can be edited or deleted by whoever wrote it.
Sign in to write one
Any signed-in account that does not publish Bullpen can review it, once — before installing it or after. A review from an account that has installed it is marked as one.
No reviews yet
Nobody has reviewed this listing. The rating on the card is the mean of the reviews written here and nothing else, so there is no rating until somebody writes the first — which takes a signed-in account that does not publish it, and nothing else.