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Prospect Engine MCP Server

Prospect Engine MCP Server

Prospect Engine MCP Server

Glama score MCP Registry npm version npm downloads license mcpservers.org

MCP server for the Mamba Labs Prospect Engine actor on Apify.

Four modes in one actor: enrich companies you already have, discover who is hiring for your keywords, find contacts at a company, or run the whole chain end to end with an ICP gate in the middle.

Install

npx -y @mambalabsdev/mcp-b2b-prospect-engine

Claude Desktop

{
  "mcpServers": {
    "mamba-b2b-prospect-engine": {
      "command": "npx",
      "args": ["-y", "@mambalabsdev/mcp-b2b-prospect-engine"],
      "env": { "APIFY_TOKEN": "your-apify-token" }
    }
  }
}

Get an Apify token at console.apify.com/account/integrations.

Related MCP server: Company Discovery List Builder MCP Server

Tool

run_prospect_engine

Four modes in one actor: enrich companies you already have, discover who is hiring for your keywords, find contacts at a company, or run the whole chain end to end with an ICP gate in the middle.

Input

Type

Required

Notes

mode

enum

no

What to run. enrich_companies resolves identity, firmographics, LinkedIn and social for each company. discover_jobs finds who is hiring for your keywords and resolves the real employer from the job description. find_contacts finds people at each company. full chains all three. Default: "enrich_companies". One of: enrich_companies, discover_jobs, find_contacts, full.

domains

array

no

One domain per line. Used by enrich_companies and find_contacts.

company_names

array

no

One name per line. Used when you have a name but no domain.

keywords

array

no

Roles to search for. Used by discover_jobs and full. Example: copy editor, proofreader, content editor. Default: ["copy editor", "proofreader", "content editor"].

country

string

no

Two letter country code for job search, for example us or gb. Default: "us".

location

string

no

Optional location filter for job search, for example New York.

lookback_days

string

no

Drop postings older than this many days. Sent as a string because Clay sends every field as a string. Default: "30".

max_results

string

no

Cap on postings returned per run. Keeps a broad keyword set from running away. Default: "25".

max_pages

string

no

1 to 5. Each page is one SerpAPI call, so this is the main cost dial on discovery. Default: "1".

new_postings_only

string

no

true to return only postings not seen in a previous run. Default: "false".

previous_run_date

string

no

YYYY-MM-DD watermark for delta detection when the cross-run cache is unavailable.

remote_only

string

no

true to keep only postings flagged remote by the board. Default: "false".

company_size_min

string

no

Drop companies below this headcount. Only takes effect once headcount is known, so it applies in full mode and to any discovery row that carried an employee count. Discovery alone does not enrich.

company_size_max

string

no

Drop companies above this headcount. Same condition as the minimum.

exclude_staffing

string

no

true to drop postings from staffing and recruitment agencies. Default: "true".

exclude_marketplaces

string

no

true to drop Upwork, Fiverr, Freelancer and similar gig listings. Default: "true".

extra_marketplaces

array

no

Additional marketplace names to filter out.

fetch_posting_page

string

no

true to open the job posting when the description alone does not identify the employer. Slower, and it is what catches a job board posting on an employer's behalf. Default: "true".

target_contacts

string

no

1 to 25. Default: "3".

target_roles

array

no

Only enrich contacts whose title plausibly matches one of these roles. Filters after discovery and before any paid email lookup, so a non-matching contact costs nothing. Leave empty to keep every contact the seniority and department filters allow.

deny_tokens

array

no

Whole words that disqualify a contact even when the title matched a target role, for example product refuses Product Owner and keeps Production Editor. Applies even when no target roles are set.

company_concurrency

string

no

How many companies to work at once. Simultaneous provider calls are this times contact_concurrency; 6 x 3 = 18 sits under the tightest documented provider ceiling. Default: "6".

contact_concurrency

string

no

How many contacts to enrich at once within one company. The email waterfall itself always runs in order. Default: "3".

max_spend_usd

string

no

Stop making paid vendor calls once this much of your own vendor spend (Findymail, Icypeas, Prospeo, BounceBan) is committed, and return everything completed so far. Caps your vendor bills, not the Apify charge for this actor. Leave empty for no cap.

max_charge_usd

number

no

Your cap on this actor's Apify charge for the run, in USD. A charge that would cross it is not made, the run stops, and one notice row says so. Separate from max_spend_usd, which caps your own vendor bills.

job_titles

array

no

Titles to search for when finding contacts.

seniority

array

no

c_level, vp, director, manager, senior.

departments

array

no

marketing, sales, engineering, product, finance, hr, operations, legal.

include_email

string

no

true to run the email waterfall. Needs an Icypeas or Prospeo key, which you supply and are billed for directly. Default: "false".

verify_email

string

no

true to verify each address. Needs a BounceBan key. Default: "true".

verify_position

string

no

true to ask a model whether each contact's title on record is consistent and plausibly current, from the supplied evidence only. Needs claude_api_key; skipped without it. Contacts found on the company's own website are skipped. Default: "true".

personalize

string

no

true to write a one or two sentence opener per contact that has an address, referencing something specific about the company. Needs claude_api_key; skipped without it. Default: "true".

brand_voice

string

no

How the opener should sound. Leave empty and it writes plainly and directly.

score_icp

string

no

true to score every row against the ICP rules and tier it A to D. Default: "true".

icp_preset

enum

no

Which scoring model to apply. "editorial_services" scores for a seller of managed copy editing and proofreading. "generic_b2b" scores on hiring intent, employer resolvability and headcount with no service-specific vocabulary. Default: "editorial_services". One of: editorial_services, generic_b2b.

min_icp_score

string

no

In full mode, only companies scoring at or above this go on to contact discovery. Default 45: at 25 the filter passed every keyword-discovered editorial posting, because 25 is the floor such a posting can score. Default: "45".

extra_exclude_names

array

no

Any company whose name contains one of these is excluded.

signal_taxonomy

array

no

Override the default signal types. Each entry is an object with type, strength, title_keywords, and optional also_keywords and description_keywords.

include_social

string

no

true to resolve Facebook, Instagram, X and YouTube alongside LinkedIn. Default: "true".

source_timeout_secs

string

no

5 to 120. A source that exceeds this is marked degraded and the run continues. Default: "30".

skip_cache

string

no

true to ignore the 7 day cross-run cache and recompute everything. Default: "false".

serper_api_key

string

no

Your Serper.dev key. Powers people search in find_contacts, which is the highest-coverage layer. Without it the free fallback is measurably poor.

findymail_api_key

string

no

Your Findymail key. First provider in the email waterfall.

icypeas_api_key

string

no

Your Icypeas key. Runs on Findymail misses.

prospeo_api_key

string

no

Your Prospeo key. Runs on the residual after Findymail and Icypeas.

bounceban_api_key

string

no

Your BounceBan key. Second verifier, used for the catch-all case.

serpapi_key

string

no

Your SerpApi key. Required by discover_jobs and full. Distinct from a Serper key: different vendor.

claude_api_key

string

no

Your own Anthropic key, used for position verification and the personalized opener. Both steps are skipped when it is absent. Never stored.

Billing

You are charged per company enriched, per contact verified and per job posting discovered, at different rates for basic and full enrichment. Vendor API calls are billed to you by those vendors directly. Set max_spend_usd to cap that vendor spend per run, and target_roles to skip paid lookups for contacts outside the roles you want. verify_position and personalize run on your own Anthropic key (claude_api_key) and are skipped without it.

Price per event on the Apify FREE plan, from the live pricing record; paid Apify plans pay less per event.

Event

Price (USD)

Company enriched, basic (company-enriched-basic)

0.02

Company enriched, full (company-enriched-full)

0.08

Contact verified (contact-verified)

0.015

Job posting discovered (job-posting-discovered)

0.01

Company enriched, basic, chained run (company-enriched-basic-composed)

0.015

Company enriched, full, chained run (company-enriched-full-composed)

0.06

Contact verified, chained run (contact-verified-composed)

0.01125

Job posting discovered, chained run (job-posting-discovered-composed)

0.0075

Company enriched, full, reserved rate (company-enriched-full-founding)

0.05

Contact verified, reserved rate (contact-verified-founding)

0.009

Job posting discovered, reserved rate (job-posting-discovered-founding)

0.005

Pricing is on the actor's Apify page. Running this server consumes Apify credits.

What this server does and does not do

It is a thin client for the Apify actor. It passes your input through and returns the actor's output unchanged. Every behavior described above lives in the actor, not here.

Errors are surfaced, never swallowed. An invalid input, an invalid token, an exhausted balance, a timeout, or a run that returns anything other than a dataset all come back as an explicit tool error rather than as an empty result.

The tool starts the actor run and polls it to a finished status, so a long run is not cut off at 300 seconds. The run is allowed 1,800 seconds. If it is still going two minutes after that, the call stops waiting and returns the run ID with a link to it in the Apify Console, where the results land when it finishes. A run that does not succeed comes back as an error with its run ID and status. A full or find_contacts run over many companies can take several minutes, which is why this matters here.

Source

The actor is on the Apify Store. This wrapper is MIT licensed.

Built by Mamba Labs

Available Tools

1 tool
run_prospect_engineRun Prospect EngineA
Idempotent

A composed prospecting actor with four modes. enrich_companies resolves identity, firmographics, LinkedIn and social for each domain or company name you supply, and needs no vendor key at all. discover_jobs finds who is hiring for your keywords and resolves the real employer behind each posting, including postings a job board placed on an employer's behalf. find_contacts finds people at the companies you name, with optional email discovery and verification. full runs discovery, enrichment, ICP scoring and then contact discovery, passing only the companies at or above min_icp_score through to the contact stage. Every row comes back flat and Clay ready with per field provenance. Vendor keys are yours: you supply them, those vendors bill you directly, and the per event price covers the actor only. discover_jobs and full require a SerpApi key, which is a different vendor from the Serper key that powers people search. Use it when you need companies, hiring signals, or contacts in one flat table. Do not use it to verify a single email you already have (that is the Work Email Waterfall) or to score a list you already enriched (that is the ICP Fit Scorer). Cost controls: max_results and max_pages bound discovery, target_contacts bounds contacts per company, target_roles skips paid lookups for non-matching contacts, and max_spend_usd caps your own vendor spend. Requires an APIFY_TOKEN and consumes Apify credits. Read only: it enriches and discovers, it writes nothing.

Inputs: mode, country, domains, keywords, +44 more.

Tool Schema Changelog

Recent tool additions, removals, and schema changes observed during successful MCP inspections.

Loading tool schema changelog…

    TDQS

    A4/5.0

    Scored across 1 tool

    Disambiguation5/5

    With only one tool, there is no possibility of misselection between tools. The four modes are clearly described within the single tool, so an agent knows exactly what the tool does.

    Naming Consistency5/5

    The single tool name 'run_prospect_engine' follows a clear verb_noun snake_case convention. With no other tools, there is no inconsistency to evaluate.

    Tool Count3/5

    A single tool for a broad prospecting domain covering enrichment, job discovery, contact finding, and full pipeline feels thin. While the tool is intentionally composed with modes, one tool limits granular control and selection.

    Completeness3/5

    The tool covers core discovery and enrichment workflows, but explicitly references separate tools for verifying a single email and scoring an enriched list that are not present. These are notable gaps for a complete prospecting surface, though core operations are present.

    Maintenance

    ActivityActive
    ResponsivenessNo recent community issues

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