Sbl.so
AI SDR that runs LinkedIn and WhatsApp outreach from managed sender profiles, finds intent leads and books meetings.
From $99/mo 7-day free trial MCP server API
Bottom line
Sbl.so starts at $99/mo with a 7 day free trial and no card. It fits recruiters, founders and agencies who want an AI SDR to run LinkedIn business development from rented sender profiles instead of their own account.
Stands out for: Outreach runs from managed SDR profiles at $65/mo each rather than your personal LinkedIn, and the AI keeps chatting with each prospect until a meeting lands on your calendar.
Watch out for: Prospects hear from a rented profile, not from you, which can feel off for relationship led recruiting; premium signals, AI voice cloning and the built in CRM only start on the $189 Pro plan.
Overview
Sbl.so, from Second Brain Labs (Magillabs Technology in India), is an autonomous AI SDR for LinkedIn and WhatsApp. You describe your ideal customer in plain English or paste a Sales Navigator search, and it builds a lead list, writes personalized openers and keeps conversations going until the prospect books a meeting.
Leads come from intent signals rather than bought lists: people commenting on or reacting to posts, including competitors' posts, plus job changes, funding news and competitor monitoring on Pro. An AI scoring agent ranks each lead against your ICP, and a comment to DM feature turns keyword comments into conversations.
Outreach can run from your own account or from managed SDR profiles the vendor rents at $65/mo each, pre warmed and rotated automatically within LinkedIn's daily limits. The vendor publishes a Recruiters and HR playbook built from more than 32,000 messages, so recruiting desks are a use case it supports directly.
Pricing is $99/mo for Starter and $189/mo for Pro, with extra seats at $39/mo and a 7 day free trial with no card. Integrations cover HubSpot, Salesforce, Pipedrive, Slack, Notion, Zapier, n8n and Make, and a public API plus an official MCP server let Claude and other agents create campaigns, import leads and reply to threads.
Who it's for
Best for
- Recruiters and agencies doing LinkedIn business development
- Founders with no SDR
- Agencies running outreach for several clients
- Teams that want AI agents to run campaigns via MCP
Not ideal for
- Recruiters who want every message sent from their own profile
- Teams whose outbound is mainly cold email
- Buyers who need a contact database with emails and phones
Key features
AI SDR for LinkedIn and WhatsApp. Describe your ideal customer in plain English or paste a Sales Navigator search, and Sbl.so writes the openers, replies to prospects in 100+ languages and keeps the thread moving until a meeting is booked. You can step in on any conversation.
Managed SDR sender profiles. Outreach can run from pre warmed LinkedIn profiles the vendor rents at $65/mo each, rotated automatically within daily limits, so your personal account is not used.
Intent signals and ICP lead lists. Leads come from people engaging with posts, including competitors' posts, plus job changes, funding and competitor monitoring on Pro. An AI agent scores each lead against your ICP, and comment to DM turns keyword comments into conversations.
MCP server and public API. An official MCP server with 30 tools, a REST API and webhooks let Claude and other agents create campaigns, import leads and answer replies. HubSpot, Salesforce, Pipedrive, Slack, Notion, Zapier, n8n and Make connect too.
AI features
| What the AI does | Plan |
|---|---|
| Writes openers and replies to prospects in 100+ languages | All plans |
| Finds ICP matched leads from a plain English prompt | All plans, 1,000 leads/mo on Starter |
| AI lead scoring against your ICP | All plans |
| Sends voice notes in your cloned voice | Pro |
| MCP server lets external AI agents run campaigns | Starter and above |
Only features named in the vendor's own documentation. Anything sold separately is marked as an add-on.
MCP server
https://mcp.sbl.so/mcp
Official MCP server from the vendor at https://mcp.sbl.so/mcp (beta), authenticated with a bearer API key created in the Sbl.so app, plus a Claude Desktop bundle. It exposes 30 tools for campaigns, lead imports, replies and analytics, and is included from the Starter plan.
Setup steps and live status MCP Directory Check your stack in the MCP readiness checker
Pricing
| Plan | Price | What you get |
|---|---|---|
| Starter | $99/mo | 2 outreach seats, 1,000 ICP matched leads/mo, LinkedIn and WhatsApp, MCP and API, 2 team members |
| Pro | $189/mo | 4 seats, 2,000 premium leads/mo, premium signals, AI voice clone, built in CRM, 10 team members |
| Elite | $997/mo | Invite only, LinkedIn only, 500 hyper curated leads with per prospect journeys |
Sbl.so has two self serve plans billed monthly: Starter at $99/mo with 2 outreach seats, 1,000 ICP matched leads a month and 2 team members, and Pro at $189/mo with 4 seats, 2,000 premium leads, premium signals such as job changes and funding, AI voice cloning, a built in CRM and 10 team members. Extra seats are $39/mo on both plans. Managed SDR sender profiles are $65/mo each, or $59 each above 10 profiles. An invite only Elite tier is listed at $997/mo and Enterprise is quoted. A 7 day free trial needs no credit card. Confirm current terms on the vendor site.
Checked 23 Oct 2026. Vendors change prices without notice.
Is Sbl.so expensive?
Sbl.so starts at $99/mo. We list 86 linkedin tools in total. 10 have a free tier, and those with a public price typically start around $55 a month.
- 5 quote-based
- 10 free tier
- 74 public price
Worked out automatically from every linkedin listing, so it updates as the directory changes.
Pros and cons
Pros
- 7 day trial, no card
- Sends from rented SDR profiles
- Own MCP server from $99/mo
Cons
- Premium signals need $189 Pro
- SDR profiles cost $65/mo each
- Extra seats $39/mo each
Integrations
HubSpot Salesforce Pipedrive Slack Notion Zapier n8n Make
What's new at Sbl.so
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How Sbl.so compares
See all Sbl.so alternatives, with what each one does differently and a head to head for every pairing.
| Tool | Free tier | From | MCP | API | Compare |
|---|---|---|---|---|---|
| Sbl.so (this tool) | – | $99/mo | ✓ | ✓ | |
| | – | $79/sender/mo | ✓ | ✓ | Compare |
| | – | $99/user/mo | ✓ | ✓ | Compare |
| | – | $99/mo | – | – | Compare |
$79/sender/mo MCP API
HeyReach sends from your own team's LinkedIn accounts at $79 per sender, where Sbl.so rents you sender profiles and lets an AI handle the replies.
$99/user/mo MCP API
Gojiberry AI also uses AI agents to find intent leads at $99 per user, and adds email and phone enrichment that Sbl.so does not list.
$99/mo
Expandi automates LinkedIn sequences from your own account, a better fit if you want to write and send messages yourself rather than hand replies to an AI.
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