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Grinfi

All-in-one LinkedIn Outreach Platform with a Single Subscription.

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Grinfi is a LinkedIn + email multichannel outreach automation platform built around account safety (single-session browser tech plus proxies to avoid bans), lead enrichment, an outreach CRM, and a native MCP server plus public API for AI-agent and third-party integration.

Vendor's own claim
activation/delivery

Core capabilities

Vendor's own claim
  • LinkedIn + Email multichannel outreach automation and campaign sequencing
  • Single-Session technology paired with Bright Data proxies (185 countries) to avoid LinkedIn bans/detection
  • Smart Limits: human-like timing and daily limits that adapt to profile health
  • Outreach CRM and Smart Inbox: centralized LinkedIn/email reply inbox, pipeline stages, tagging, timeline view
  • Lead data upload, enrichment (fast AI-based or high-accuracy manual), and segmentation by ICP/behavior/signals
  • A/B testing, dynamic variables, conditional logic, and fallback steps within campaign flows
  • Native MCP Server for AI agent workflows
  • Public REST API and webhooks for CRM sync and automation

API & agent surface

From official docs
Authentication
API Key (Bearer token in Authorization header: Authorization: Bearer {YOUR_TOKEN}), generated from the API Keys page in-app
Base URL
https://leadgen.grinfi.io (per example requests in the API quick-start guide; documentation is hosted at api.grinfi.io)
Notable endpoints
  • Create contact (POST /leads/api/leads)
  • Search contacts (POST /leads/api/leads/search)
  • Send LinkedIn message (POST /flows/api/linkedin-messages)
  • Start/stop automation (PUT /flows/api/flows/{flowUuid}/start)
  • Check LinkedIn connection status (GET /leads/api/activities with a JSON filter)
  • Upsert contact with custom fields (POST /leads/api/leads/upsert)
  • Set individual custom field value (POST /leads/api/custom-field-values)
Machine-readable spec
No OpenAPI link

Ideal customer profile

Vendor's own claim

Individuals and sales teams running LinkedIn-centered outbound at volume who are concerned about account bans/detection and want built-in safety tech plus CRM and automation in one subscription rather than stitching together separate tools.

Who should look elsewhere

Our read

The platform's core value proposition - single-session tech and proxy-based ban avoidance - signals that Grinfi is purpose-built around LinkedIn outreach risk; teams whose outreach doesn't touch LinkedIn at all have no reason to pay for that safety layer.

Tools in the same layer

Our read

No curated rival set covers this tool yet, so these are simply other tools in the same architectural layer and product form. Treat it as a starting point, not a shortlist.

BeReachAPIMCPElevenLabsAPIMCPGenesyAPIMCPCladoAPICloudTalkAPIDitLeadAPI

Grinfi FAQ

Does Grinfi have an MCP server for AI agents?

Confirm current MCP details with Grinfi directly.

Vendor's own claim
How does Grinfi try to prevent LinkedIn account bans?

The vendor describes 'Single-Session' technology (one active browser session per LinkedIn profile) combined with Bright Data proxies across 185 countries, plus Smart Limits that adapt sending pace to daily account-health signals.

Vendor's own claim
How is Grinfi priced?

We could not retrieve Grinfi's pricing page in this pass, so we cannot state plan tiers or costs; the help center references a 'Grinfi Pricing Plans Overview' article, meaning plans exist, but figures were not confirmed. Confirm directly with the vendor.

Our read
Does Grinfi support email enrichment?

Yes, the vendor describes both fast AI-based and high-accuracy manual enrichment options for uploaded lead lists.

Vendor's own claim
Can I connect my own LLM for AI features?

The help center lists an article titled 'Connecting Your Own LLM Token for AI Features,' indicating a BYOK-style option exists for AI variables/templates, though the setup details themselves were not retrieved.

From official docs

Verify before you buy

  • MCP server documentation (tool names, transport, setup)
  • Social media links (LinkedIn, X, YouTube, GitHub)
  • OpenAPI/machine-readable spec - not confirmed to exist
  • A machine-readable OpenAPI specification was not included in the reviewed source set.
  • Published pricing was not available in the reviewed source set; confirm current commercial terms with the vendor.

Need help setting it up?

This page tells you whether Grinfi fits. Cheetah builds and runs the system it goes into — enrichment, sequencing, CRM and the joins between them.

Book a call →

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