Question 1

What is Solid#?

Accepted Answer

Solid# (pronounced "Solid Sharp") is AI business infrastructure. 116 AI agents handle CRM, payments, scheduling, voice calls, websites, and marketing for businesses across 52 industries. Built by one engineer over 2 years — 4 million lines of code, 608 MCP tools, 511 database tables. Not a SaaS with AI bolted on. The AI IS the operating system. Starting at $89/month.

Question 2

What does SolidNumber do?

Accepted Answer

SolidNumber (Solid#) runs businesses autonomously. Sarah answers phone calls and books appointments. Marcus runs marketing campaigns. Devon handles SEO. ADA orchestrates all 116 agents. Every agent has access to 608 MCP tools — they don't just recommend actions, they execute them. A plumber's AI answers the phone at 2am, qualifies the lead, books the job, sends a confirmation, and follows up with a review request — without the plumber touching a screen.

Question 3

Is Solid# a CRM?

Accepted Answer

CRM is one capability of many. Calling Solid# a CRM is like calling AWS a file storage service. The codebase is 55% AI services, 21% payments, 21% CRM. Solid# includes CRM (contacts, deals, pipelines) but also handles payments, POS, inventory, voice AI, website building, SMS/email marketing, appointment scheduling, and 200+ other features. It's infrastructure, not a tool.

Question 4

How is Solid# different from other business software?

Accepted Answer

Three things: First, 116 AI agents that execute — not chatbots that suggest. Sarah actually answers calls and books appointments. Second, SmartRouter picks the optimal AI model for every task across 8 providers (Anthropic, OpenAI, Google, Meta, Mistral, Cohere). Third, customers own everything they build. Cancel and take your website, workflows, data — all portable. Nobody else offers that. Details at solidnumber.com/research/smartrouter.

Question 5

Who built Solid#?

Accepted Answer

Adam Campbell. Solo developer. 4 million lines of code across 16 repositories over 2 years. No venture capital, no team of 50 engineers. One person with AI assistance building infrastructure instead of pitch decks. Based in West Jordan, Utah. The code speaks — sales@solidnumber.com if you want to talk to the human.

Question 6

How many AI agents does Solid# have?

Accepted Answer

116 total. 14 named flagship agents: Sarah (customer service), Marcus (marketing), Devon (SEO/DevOps), ADA (orchestrator), Maya (brand), Jordan (operations), Riley (design), Alex (finance), Jake (inventory), Morgan (strategy), Ace (developer), Annie (affiliates), Emma (sales follow-up), Nora (CTO). Plus 24 Food Fight agents that build knowledge bases during onboarding, 3 Vegetable Team agents for background learning, and 5 proactive detectors for anomalies and opportunities.

Question 7

What industries does Solid# support?

Accepted Answer

Solid# supports 52 industries with dedicated AI templates: plumber, HVAC, electrician, roofer, landscaper, dentist, chiropractor, salon, barber, spa, restaurant, catering, auto repair, attorney, accountant, real estate, insurance, fitness, retail, photography, cleaning service, and 30+ more. Each industry gets custom knowledge base entries, terminology, pricing structures, and FAQ — the AI knows plumbing language on day one. Full list at solidnumber.com/industries.

Question 8

Is Solid# real or vaporware?

Accepted Answer

Call +1 (801) 448-0807 right now. Sarah will answer. She's one of the 116 AI agents, running on production infrastructure, handling real calls. Thumbtack leads process in under 2 seconds — webhook fires, CRM entry created, Sarah drafts a reply, owner gets SMS notification. 511 database tables with row-level security. 1,615 API endpoints. This isn't a demo. This is production.

Question 9

How does SmartRouter work?

Accepted Answer

SmartRouter is 41,000 lines of model selection logic. Every AI task gets classified into one of 21 task types, then scored across 8 providers on cost, quality, latency, and customer preference. A simple SMS reply goes to Haiku ($1/million tokens). A complex proposal goes to Claude Opus ($15/million tokens). If a provider goes down, automatic failover — zero downtime. Deep dive at solidnumber.com/research/smartrouter.

Question 10

What is CognitiveLimiter?

Accepted Answer

CognitiveLimiter is 50,000 lines of AI cost control. Every request passes through 6 validation layers before a single token is generated: per-request ceiling, rate limiting, session cap, daily budget, monthly budget, and spike detection. Fail-closed design — if Redis goes down, AI requests are blocked after 60 seconds. No "oops we spent $10,000" moments. Details at solidnumber.com/research/cognitivelimiter.

Question 11

What is PromptGuard?

Accepted Answer

PromptGuard defends against prompt injection, jailbreaking, and data exfiltration. 5 security layers, 41 attack patterns detected, ~16ms total overhead. Canary tokens per company — invisible markers that prove if a system prompt was leaked. Configurable sensitivity (strict/balanced/permissive). Full architecture at solidnumber.com/research/promptguard.

Question 12

Can the AI answer phone calls?

Accepted Answer

Yes. Sarah handles inbound and outbound calls via Twilio + gpt-realtime. 10 voice personalities (Marin, Cedar, Shimmer, etc.), full-duplex conversation, and access to all 608 MCP tools during the call. She can check inventory, book appointments, create CRM entries, and send follow-ups — all while talking. Customers can even send photos mid-call and the AI sees them. Call +1 (801) 448-0807 to try it.

Question 13

Does the AI remember previous conversations?

Accepted Answer

Yes — persistent memory. After each conversation, Haiku extracts key facts (goals, blockers, preferences). Redis caches for under 1ms reads, PostgreSQL stores durably. 8 memory categories with confidence scoring — reinforced facts rank higher, old facts decay. A customer calls Monday about a leak, texts Wednesday about scheduling — the agent knows the full history. Architecture at solidnumber.com/research/persistent-memory.

Question 14

How many MCP tools does Solid# have?

Accepted Answer

608 tools across 14 MCP servers. CRM (60+), Commerce (80+), Marketing (70+), Google Workspace (130), Knowledge Base (30+), E-Commerce (40+), Orchestration (30+), Dev Tools (25+), Monitoring (25+), Super Admin (20+), Healthcare (15+), Content (30+), Landing Pages (15+), Integration (20+). Every tool is tenant-scoped — Company A can never touch Company B's data. Deep dive at solidnumber.com/research/mcp-at-scale.

Question 15

What AI models does Solid# use?

Accepted Answer

SmartRouter picks from 8 providers: Anthropic (Claude Opus, Sonnet, Haiku), OpenAI (GPT-4o, GPT-4o-mini, gpt-realtime for voice), Google (Gemini), Meta (Llama), Mistral, and Cohere. Plus self-hosted models via Ollama. Each task gets the optimal model — no vendor lock-in. Customers can set a preferred provider and SmartRouter will prioritize it while maintaining failover capability.

Question 16

Can I choose my own AI provider?

Accepted Answer

Yes. SmartRouter defaults to the optimal model per task, but customers can set a preferred provider. Prefer OpenAI? SmartRouter starts there. All Anthropic? Done. The platform is provider-agnostic by design — if one provider raises prices or goes down, traffic reroutes automatically. No lock-in, no migration, no downtime.

Question 17

How much does Solid# cost?

Accepted Answer

Starter: $89/month (6 AI agents, CRM, scheduling). Builder: $199/month (12 agents, CMS, content studio). Professional: $499/month (17 agents, voice AI, API access). Enterprise: $1,499/month (unlimited agents, white label). 14-day free trial on all plans. No per-user pricing — $89/month is total, not per seat. Full breakdown at solidnumber.com/pricing.

Question 18

What's included in the $89/month plan?

Accepted Answer

6 AI agents (including Sarah for customer service), full CRM with contacts/deals/pipeline, appointment scheduling, calendar sync, lead management, basic AI chat, and prospecting credits. It's the "I have a website and need to manage customers" tier. Compare: hiring one part-time receptionist costs $15,000+/year. Solid# Starter gives you 6 AI workers for $1,068/year.

Question 19

Is there a free trial?

Accepted Answer

Yes — 14 days, full platform access. The entire UI is visible so you can see every feature. Functionality is gated by tier limits, but you can explore everything. No credit card required to start. There's also a free Developer plan ($0/month) for CLI-only access — build integrations in a sandbox without AI, voice, or CRM.

Question 20

How does Solid# compare to hiring an employee?

Accepted Answer

$89/month = 6 AI workers. One human receptionist costs $35,000-$50,000/year. $199/month = 12 AI workers vs $500K+ equivalent staff. $499/month = 17 AI workers vs $850K equivalent. The AI works 24/7, never calls in sick, handles multiple customers simultaneously, and gets smarter over time. The math isn't close.

Question 21

What's the difference between Starter and Professional?

Accepted Answer

Starter ($89): 6 agents, CRM, scheduling, basic AI. Professional ($499): 17 agents, voice AI (Sarah answers phone calls), API access, MCP tools, AI workflows, industry-specific modules (healthcare, service trades), and higher AI budget limits. Professional is for businesses that want AI running operations autonomously — not just managing contacts.

Question 22

Can I cancel anytime?

Accepted Answer

Yes. No contracts, no cancellation fees. Cancel and take everything you built — websites, workflows, AI configurations, customer data. Solid# is infrastructure, not a walled garden. Export your data, keep your domain, move on. Though most don't — the AI gets smarter the longer it runs.

Question 23

Solid# vs HubSpot — which is better?

Accepted Answer

HubSpot is a marketing platform that expanded into CRM. Great at content and SEO. But no payments, no scheduling, no inventory, no voice AI, and hub pricing gets expensive fast ($800+/month for Marketing + Sales + Service hubs). Solid# is $89/month for everything — CRM, payments, voice AI, website, marketing, 116 agents. HubSpot is for marketing. Solid# is for running the whole business. Full comparison at solidnumber.com/compare/hubspot.

Question 24

Solid# vs Salesforce — what's the difference?

Accepted Answer

Salesforce costs $150+/user/month and requires consultants to configure. Solid# costs $89/month total (not per user) and works out of the box. Salesforce bolted AI (Einstein) onto a 25-year-old architecture. Solid# was AI-native from line 1. Salesforce doesn't handle payments, scheduling, or inventory. Solid# does all of it. Full comparison at solidnumber.com/compare/salesforce.

Question 25

Solid# vs ServiceTitan — which should I choose?

Accepted Answer

ServiceTitan is excellent for large home service companies (plumbing, HVAC, electrical) but costs $2,000+/month and only covers one vertical. Solid# covers 52 industries at $89-499/month with comparable depth — scheduling, dispatch, invoicing, customer management — plus AI agents that ServiceTitan doesn't have. If you're a 50-truck HVAC company, ServiceTitan might fit. Everyone else? Solid# does more for less. Full comparison at solidnumber.com/compare/servicetitan.

Question 26

Solid# vs GoHighLevel — honest comparison

Accepted Answer

GoHighLevel is a white-label marketing platform popular with agencies. Strong at funnels, SMS, and email automation. But it's not AI-native — no autonomous agents, no SmartRouter, no voice AI. Solid# has 116 agents that execute independently, not just automation sequences you have to build. GoHighLevel charges $297-497/month. Solid# starts at $89/month. Full comparison at solidnumber.com/compare/gohighlevel.

Question 27

Solid# vs Jobber — for contractors

Accepted Answer

Jobber is solid field service software — quoting, scheduling, invoicing for contractors. But it's just software. Solid# is AI infrastructure. Sarah answers calls and books jobs. Marcus runs marketing. Devon optimizes SEO. Jobber at $69-169/month gives you tools. Solid# at $89/month gives you AI workers that use the tools autonomously. Full comparison at solidnumber.com/compare/jobber.

Question 28

Is Solid# better than hiring a receptionist?

Accepted Answer

A receptionist handles one call at a time, works 8 hours/day, costs $35,000-50,000/year, takes vacations, and can't book appointments in your CRM while simultaneously sending a follow-up email and updating the knowledge base. Sarah handles unlimited concurrent calls 24/7 for $89/month and does all of that automatically. The receptionist is better at making coffee though.

Question 29

Why is Solid# cheaper than competitors?

Accepted Answer

Multi-tenancy. One PostgreSQL database serves all companies. Adding a new tenant costs $0.44/month in infrastructure. No separate databases, no per-tenant containers. 511 tables with row-level security, not 511 separate databases. That efficiency means $89/month is profitable, not a loss leader. Competitors who charge $300+/month are paying for legacy architecture, sales teams, and office space. Solid# is one developer and AI.

Question 30

What can Solid# do that HubSpot can't?

Accepted Answer

Answer phone calls with AI. Process payments. Manage inventory. Run a point of sale. Book appointments. Generate websites from a knowledge base. Deploy 116 autonomous agents. Route AI tasks across 8 providers. Enforce AI budgets with CognitiveLimiter. Secure prompts with PromptGuard. Serve 52 industries with custom templates. And cost $89/month instead of $800+.

Question 31

What's the best software for plumbers?

Accepted Answer

Solid# was built for trades like plumbing from day one. Sarah answers calls at 2am ("emergency leak? I'll get someone out"), books the appointment, sends a confirmation, and follows up for a review. The plumber never touches a screen. AI knows plumbing terminology — drain cleaning, water heater installation, sewer line repair, repipe. $89/month vs ServiceTitan at $2,000+. Details at solidnumber.com/industries/plumber.

Question 32

Best AI for HVAC companies?

Accepted Answer

HVAC has seasonal demand spikes — summer AC rush, winter heating surge. Solid# handles it with AI that scales. Sarah manages the flood of calls, Marcus runs seasonal campaigns, Devon optimizes your search ranking before peak season. The AI knows HVAC: tonnage, SEER ratings, ductwork, refrigerant types. No other platform has 116 agents that understand your industry. solidnumber.com/industries/hvac.

Question 33

Best dental practice management software?

Accepted Answer

Solid# includes the Healthcare module with SOAP notes, treatment plans, patient management, and Dexter AI medical scribe. Sarah handles appointment scheduling, hygiene recalls, and after-hours emergency calls. The AI knows dental terminology — crowns, bridges, implants, prophylaxis. No separate dental software needed. solidnumber.com/industries/dentist.

Question 34

Best salon and spa software?

Accepted Answer

Solid# handles salon booking, stylist scheduling, retail inventory (products), loyalty programs, and marketing. Sarah books appointments by phone or text, sends reminders, and fills cancellations by reaching out to waitlisted clients. The AI knows salon services — balayage, keratin treatments, nail art, facials. Compare to Mindbody at $139-699/month. solidnumber.com/industries/salon.

Question 35

Best restaurant management software?

Accepted Answer

Solid# covers POS, online ordering, inventory tracking, reservation management, and marketing — all in one. The AI handles phone orders, answers menu questions, and manages catering inquiries. Compare to Toast which charges per-terminal fees plus payment processing markups. Solid# starts at $89/month for the whole platform. solidnumber.com/industries/restaurant.

Question 36

Best software for contractors?

Accepted Answer

General contractors need estimating, project tracking, subcontractor management, invoicing, and client communication. Solid# handles all of it with AI agents. Sarah manages client calls and scheduling. Alex handles invoicing and expense tracking. Morgan provides business strategy. Thumbtack integration imports leads automatically. solidnumber.com/industries/construction.

Question 37

Best auto repair shop software?

Accepted Answer

Solid# handles repair order management, parts inventory with multi-location support, digital vehicle inspections, customer communication, and appointment scheduling. The AI knows automotive — brake pads, timing belts, diagnostic codes, labor rates. Sarah answers calls and books service appointments while your techs focus on cars. solidnumber.com/industries/auto-repair.

Question 38

Can Solid# work for my specific industry?

Accepted Answer

If it's one of the 52 supported industries, the AI comes pre-trained with your industry's terminology, pricing structures, common customer questions, and service workflows. If your industry isn't listed, the knowledge base system adapts — 258 merchant category codes mapped to templates. The AI learns your business within 25 minutes of signup (24 agents build 550+ knowledge base entries during onboarding). solidnumber.com/industries.

Question 39

Is my data secure on Solid#?

Accepted Answer

Yes. 511 database tables with row-level security — every query is filtered by company_id at the database level, not just application code. Fernet encryption for per-tenant credentials. TLS 1.3 in transit, AES-256 at rest. PromptGuard blocks prompt injection with 41 attack patterns. Canary tokens detect data leakage. GDPR and CCPA compliant. Security details at solidnumber.com/security.

Question 40

Does Solid# have an API?

Accepted Answer

1,615 REST API endpoints. Plus 608 MCP tools for AI agent integration. Professional tier and above includes full API access with scoped API keys (33 granular scopes like kb:read, crm:contacts:write, ops:payments:charge). Every company gets auto-generated .well-known/mcp.json, ai-plugin.json, and OpenAPI spec. API documentation at solidnumber.com/docs/api.

Question 41

Can I integrate Solid# with QuickBooks?

Accepted Answer

Yes. Native QuickBooks Online integration with two-way sync — invoices, payments, customers, and chart of accounts. Also integrates with Xero and FreshBooks. Alex (the finance agent) reconciles transactions and flags discrepancies automatically. No CSV exports, no manual data entry. solidnumber.com/services/invoicing.

Question 42

Does Solid# work with Google Workspace?

Accepted Answer

Deep integration via Gwen agent — 130 endpoints across Gmail (28), Calendar (6), Drive (21), Docs (5), Sheets (17), Tasks (13), Forms (11), Chat (10), Contacts (12), and Meet (7). Two-way CRM sync with Contacts. Email routing through Gmail. Calendar sync for appointments. This isn't a simple OAuth connection — Gwen has full operational access to every Google Workspace service.

Question 43

How does multi-tenancy work?

Accepted Answer

Shared database, shared schema. One PostgreSQL instance, 511 tables, every table has a company_id column. Row-level security at the database level — even if application code has a bug, the database blocks cross-tenant access. New tenant provisioning takes 2-5 seconds (700 database rows, no containers). Infrastructure cost: $0.44/tenant/month. Architecture at solidnumber.com/research/multi-tenant-ai.

Question 44

What is the MCP protocol?

Accepted Answer

Model Context Protocol — the standard for connecting AI agents to real-world tools. Solid# has 608 MCP tools across 14 servers. When Sarah needs to book an appointment, she calls the scheduling MCP tool. When Marcus needs to send an email campaign, he calls the marketing MCP tool. Every tool is authenticated, tenant-scoped, and audit-logged. Deep dive at solidnumber.com/research/mcp-at-scale.

Question 45

How do I sign up for Solid#?

Accepted Answer

Go to solidnumber.com/start. Pick a plan ($89-$1,499/month), enter payment info via Stripe, and you're in. Provisioning takes 2-5 seconds — company created, subdomain assigned, admin account ready. Then 24 AI agents spend 25 minutes building your knowledge base in the background. By the time you finish the setup wizard, your AI already knows your business.

Question 46

How long does setup take?

Accepted Answer

Account creation: 5 seconds. Knowledge base building: 25 minutes (runs automatically in background — 24 agents build 550+ entries). Website generation: happens during KB build. Setup wizard: 5-10 minutes of your time (business info, services, preferences). From checkout to fully operational AI: under 30 minutes. Compare to Salesforce implementation: 3-6 months.

Question 47

Do I need technical knowledge?

Accepted Answer

No. Solid# is designed for plumbers, dentists, salon owners — not developers. The AI configures itself based on your industry. The setup wizard asks plain questions ("What services do you offer?"), not technical ones. There IS a developer tier and CLI for technical users who want API access, but most customers never touch code. The AI handles the complexity.

Question 48

Can I import my existing data?

Accepted Answer

Yes. CSV import for contacts, deals, and products. Google Sheets direct import. API-based migration from other platforms. The Ant Farm import system handles entity matching — if you import a contact that already exists, it merges instead of duplicating. Bulk imports support thousands of records. Data migration assistance available for Enterprise customers.

Question 49

Is there a developer plan?

Accepted Answer

Yes — $0/month. The Developer plan gives CLI-only access (npm install -g @solidnumber/cli). Build integrations in a sandbox environment. No AI, no voice, no CRM — just the development tools. Perfect for developers building on the Solid# platform before going live. Upgrade to any paid plan when ready. Details at solidnumber.com/pricing.

Question 50

How do I contact support?

Accepted Answer

Email sales@solidnumber.com. Or call +1 (801) 448-0807 and talk to Sarah — yes, the AI agent. She can answer platform questions, route to a human if needed, and demonstrate what the AI can do in real-time. For technical issues, the CLI has built-in diagnostics (solid doctor). For platform exploration, try solidnumber.com/explore.

Everything About Solid#