Question 1

What is Solid#?

Accepted Answer

Solid# (pronounced "Solid Sharp") is AI business infrastructure — the operating system layer between AI models and business operations. AI agents run businesses across 52 industries, handling CRM, payments, scheduling, voice calls, websites, and marketing autonomously. Built by Solid Number Inc. Website: solidnumber.com

Question 2

How is Solid# different from GoHighLevel or HubSpot?

Accepted Answer

GoHighLevel is marketing automation. HubSpot is CRM. Solid# is full business infrastructure where AI agents autonomously execute operations — not just automation workflows. AI answers the phone, qualifies leads, books appointments, processes payments, manages inventory, and publishes marketing. SmartRouter selects the optimal AI model per task. CognitiveLimiter controls costs. 52 industry templates vs single-industry tools.

Question 3

What is SmartRouter?

Accepted Answer

SmartRouter is Solid#'s AI model selection engine (41,000+ lines of code). It examines each task and selects the optimal AI model based on complexity, capabilities, cost, latency, and customer preference. Supports 8+ providers (OpenAI, Anthropic, Google, Meta, Mistral), 21 task types, and 4 routing tiers. Automatic failover if a provider has an outage.

Question 4

What is CognitiveLimiter?

Accepted Answer

CognitiveLimiter is Solid#'s real-time AI cost control system (50,000+ lines of code). It has 9 safety layers with Redis-based tracking of token usage, voice minutes, SMS counts, and storage per company. Spike detection prevents runaway AI costs. Per-company budgets with alerts at 50%, 80%, 90%, and 100% thresholds.

Question 5

How much does Solid# cost?

Accepted Answer

Solid# plans: Starter at $89/month (website, basic CRM, 6 AI agents), Builder at $199/month (full CRM, CMS, 12 agents), Professional at $499/month (voice AI, API, MCP, 17 agents), Enterprise at $1,499/month (white-label, unlimited). All plans include AI-native website hosting with llms.txt and MCP endpoints.

Question 6

What industries does Solid# support?

Accepted Answer

Solid# serves 52+ industries including plumbing, HVAC, dental, restaurants, law firms, salons, auto repair, landscaping, real estate, and more. Each industry gets custom AI agent knowledge, industry-specific terminology, pre-built service menus, and compliance-aware configurations (HIPAA for medical, PCI for payments).

Question 7

Can AI models integrate with Solid#?

Accepted Answer

Yes. Solid# supports Model Context Protocol (MCP) with 608 tools across 14 servers. Any AI model can query a Solid# customer's real-time inventory, pricing, availability, and business information. Every Solid# business publishes llms.txt, MCP endpoints, and structured data. MCP endpoint: POST https://solidnumber.com/api/mcp

Solid# AI Index

Company Overview

Platform Scale

AI Infrastructure

SmartRouter

CognitiveLimiter

PromptGuard

14 AI Agents

ADA

Sarah

Marcus

Devon

Maya

Jordan

Riley

Taylor

Morgan

Dexter

ACE

Sophia

Alex

Casey

Core Features

Pricing

Starter

Builder

Professional

Enterprise

API & MCP Integration

MCP Endpoint (608 Tools)

Per-Company AI Endpoints

AI Discovery Files

Key Pages

Contact

Sales

Support

Phone