Blackbook Protocol Advisor is an MCP server with 25 tools an agent can call, among them confirm_and_submit, draft_form_answers, end_browser_session. It answers at https://theblackbook.pro over streamable HTTP, and it listed its tools to an anonymous client, so no sign-in was needed for that. Our probes reached it 6 of 6 times since 11 September 2026; the last check, on 22 October 2026, succeeded.
Purchaser-gated MCP for Vault, HMRC TRS, 95/5 equity, and Companies House PSC.
Description as the publisher wrote it.
| Tool | What it does |
|---|---|
confirm_and_submit | Submit the current portal form only after the human provides a valid one-time confirmationToken from prepare_submit_confirmation. This can file on a government portal. Inputs: sessionId, confirmationToken |
draft_form_answers | Draft preparation notes for TRS, IHT100, IHT400, and related professional-review questions from a completed intake. Label as a Protocol guide for solicitor execution. Inputs: intake, formFamily |
end_browser_session | Tear down the assisted browser session. No credentials are persisted. Safe to call more than once for the same id after expiry. Inputs: sessionId |
explain_current_screen | Summarise the current portal page: URL, text excerpt, fillable fields, Protocol hint, signedInLikely. Inputs: sessionId |
fill_fields | Fill non-secret form fields (label/placeholder/name). Never passwords, OTPs, or Companies House auth codes. Inputs: sessionId, fields |
generate_review_bundle | Generate a cited professional-review bundle from a completed intake for the Owner to take to a solicitor or CTA. Inputs: intake, format |
get_companies_house_guidance | Retrieve approved Companies House / PSC / WebFiling guidance. PSC filings name individuals (trustees), never the Trust itself. Inputs: topic |
get_hmrc_guidance | Retrieve approved GOV.UK/HMRC trust and inheritance-tax guidance by topic. Returns a title, official URL, and short summary. Not a live scrape of GOV.UK. Inputs: topic, jurisdiction |
get_legal_boundary | Return the mandatory educational / non-advice boundary statement. Call when the Owner asks if this is legal advice. Inputs: audience |
get_module_playbook | REQUIRED when coaching setup. Return the ordered Protocol checklist for a module. For 95/5 / share transfer into the Trust use equity_95_5 (not a freestyle solicitor checklist). Modules: vault, trs, equity_95_5, psc, banking, ip, philosophy Inputs: module |
get_self_serve_portal | Self-serve path: return the official portal URL plus Protocol checklist for the Owner’s own browser. Present portalUrl as a clickable markdown link (MCP cannot launch local browsers). Do not start Browserbase. Inputs: portalId |
get_skill | Load a Protocol workflow skill as markdown. Names: establish-vault-trust, register-trust-trs, implement-95-5-equity-split, update-psc-companies-house, run-portal-copilot. Inputs: name |
list_fillable_fields | Inventory visible non-secret form controls (label/name/type) on the current portal page. Use to align prepare_portal_fill keys. Inputs: sessionId |
list_implementation_modes | List Owner choices: self_serve (own browser + guidance) vs assisted (Browserbase live view + optional fill). Ask before starting co-pilot. Inputs: preferred |
list_modules | List available Protocol advisor modules in coaching order. Inputs: query |
list_risk_flags | Return legal, tax, and practical red flags detected from customer facts (settlor-as-beneficiary, lender consent, offshore, time pressure). Inputs: intake |
list_skills | List Protocol Architect workflow skills (Vault, TRS, 95/5, PSC, portal co-pilot). Call when the Owner asks how to set something up; then get_skill for the matching workflow. Inputs: query |
open_portal | Navigate the assisted session to an allowlisted portal: trs, trs_manage, companies_house_webfiling, or companies_house_psc. Inputs: sessionId, portalId |
prepare_portal_fill | Map intake facts to a fill_fields payload for TRS or Companies House PSC. Secrets (auth code) are listed but never filled. Call after Owner login; align labels with list_fillable_fields. Never maps the Trust as a PSC organisation. Inputs: intake, formFamily |
prepare_submit_confirmation | Create a one-time confirmation token required before confirm_and_submit. Show the token to the human Owner; do not submit without it. Inputs: sessionId |
request_user_action | Pause for Owner login, CAPTCHA, 2FA, or review in the Browserbase live view. Never ask the Owner to paste passwords into chat. Inputs: sessionId, action |
run_trust_intake | Validate a structured trust setup intake and return missing facts, Protocol warnings, and next modules. Call before drafting forms or opening portals. Inputs: jurisdiction, objective, assets, assetValue, settlor, parties |
search_book | REQUIRED before substantive Protocol answers. Search approved Blackbook Protocol passages and return cited excerpts. Prefer Protocol vocabulary from hits over generic UK legal advice. Returns ranked results plus the educational boundary. Inputs: query, limit |
start_browser_session | ASSISTED mode only. Start a fresh ephemeral Browserbase (or mock) co-pilot session. Returns liveViewUrl — no purchaser email. If Owner prefers their own browser, use get_self_serve_portal instead. Inputs: reason |
wait_for_user_ready | After request_user_action(login|2fa), poll until the page leaves the sign-in surface (or timeout). Then continue fill. Inputs: sessionId, timeoutMs, pollMs |
Every block below points at https://theblackbook.pro. Pick your client and copy.
claude mcp add --transport http blackbook-protocol-advisor https://theblackbook.pro
{
"mcpServers": {
"blackbook-protocol-advisor": {
"command": "npx",
"args": ["-y", "mcp-remote", "https://theblackbook.pro"]
}
}
}{
"mcpServers": {
"blackbook-protocol-advisor": {
"url": "https://theblackbook.pro"
}
}
}{
"servers": {
"blackbook-protocol-advisor": {
"type": "http",
"url": "https://theblackbook.pro"
}
}
}{
"context_servers": {
"blackbook-protocol-advisor": {
"url": "https://theblackbook.pro"
}
}
}{
"mcpServers": {
"blackbook-protocol-advisor": {
"serverUrl": "https://theblackbook.pro"
}
}
}{
"mcpServers": {
"blackbook-protocol-advisor": {
"url": "https://theblackbook.pro"
}
}
}name: Blackbook Protocol Advisor
version: 0.0.1
schema: v1
mcpServers:
- name: Blackbook Protocol Advisor
type: streamable-http
url: https://theblackbook.pro{
"mcpServers": {
"blackbook-protocol-advisor": {
"httpUrl": "https://theblackbook.pro"
}
}
}{
"mcpServers": {
"blackbook-protocol-advisor": {
"type": "http",
"url": "https://theblackbook.pro"
}
}
}{
"mcpServers": {
"blackbook-protocol-advisor": {
"url": "https://theblackbook.pro"
}
}
}goose://extension?url=https%3A%2F%2Ftheblackbook.pro&type=streamable_http&id=blackbook-protocol-advisor&name=Blackbook%20Protocol%20Advisor
It answered our last check on 22 October 2026 in 306 ms. Over 6 checks since 11 September 2026 it answered 6. Status here comes from Neuronto's own probes, not from the publisher.
25, as returned by the server's own tools/list on 15 September 2026: confirm_and_submit, draft_form_answers, end_browser_session, explain_current_screen, fill_fields, generate_review_bundle, get_companies_house_guidance, get_hmrc_guidance, and 17 more.
It answered our last check on 22 October 2026 in 306 ms. Over 6 checks since 11 September 2026 it answered 6.
Put the server under mcpServers in ~/.cursor/mcp.json with the URL https://theblackbook.pro. The exact JSON is above, with the same setup for Claude Code, Claude Desktop, VS Code, Windsurf, Zed, Gemini CLI and the rest.
It listed its tools to an anonymous client, so reading the tool list needs no key. Individual tools can still ask for credentials in their own inputs.
Publisher: io.github.koynlabs. Endpoint host: theblackbook.pro. ARD identifier: urn:air:io.github.koynlabs:mcp:blackbook-advisor.
First indexed 10 September 2026. The tools are exactly what the server returned; nothing on this page
is inferred from its name. Ranking in Neuronto search is never for sale.