Show HN: Cont3xt.dev – Universal Team Knowledge for AI Coding Tools

4 hours ago 1

Trusted by your engineering team

Cont3xt gives your AI tools instant access to your team's patterns, architectural decisions, and coding standards. Stop catching the same mistakes in every PR review.

38%

Average context failure rate

6+ weeks

Time to onboard new developers

65%

Of devs report AI missing context

5-10 hrs

Weekly senior dev time on questions

Tribal Knowledge Trapped

Your team's architectural decisions live in Slack threads, PR comments, and senior developers' heads. AI tools suggest solutions that violate patterns your team decided on months ago.

87% invisible

Manual Config Files

Teams create .cursorrules, RULES.md, and tool-specific configs manually. No standardisation, no sharing, no single source of truth. Every tool needs its own configuration.

6+ configs

Painful Onboarding

New developers take weeks to learn team conventions. They make mistakes AI should prevent, ask questions AI should answer, and write code that doesn't match team patterns.

6 weeks avg

Merge Conflicts

Multiple developers unknowingly work on the same code. No visibility into who's doing what. AI suggests changes that conflict with work in progress.

3x conflicts

Repeated Questions

Senior developers answer the same architectural questions repeatedly. "How do we handle auth?" "Why PostgreSQL?" Time that should be spent on building, not explaining.

10 hrs/week

Context Failures

AI tools confidently suggest anti-patterns, deprecated approaches, and solutions that violate security policies. PRs get rejected for not following unwritten rules.

38% fail rate

Universal context that just works

Connect once, work everywhere. Cont3xt.dev serves your team's knowledge to Cursor, GitHub Copilot, Claude, and any MCP-compatible tool. No more manual configs, no more context failures.

Smart Context Filtering Only relevant rules served based on what you're working on
Automatic Knowledge Capture Extract patterns from PRs and code reviews automatically
Team Coordination See who's working on what to prevent conflicts
Instant Onboarding New developers productive from day one

Priority: CRITICAL Applies to: auth/**, security/** Rule: Always use bcrypt for password hashing Never use MD5 or SHA1 for password hashing. These are cryptographically broken. Always use bcrypt with a cost factor of at least 12. hash, err := bcrypt.GenerateFromPassword( []byte(password), 12 ) Context served: 1,342 times Effectiveness: 94% helpful

Status: ACCEPTED Date: 2024-10-15 Context: We need a reliable, scalable database that supports complex queries, JSONB for flexible schemas, and has excellent Go driver support. Decision: Use PostgreSQL 16 with pgx driver Consequences: + Full-text search built-in + JSONB for metadata storage + Robust transaction support - Team needs PostgreSQL expertise Related PRs: #234, #267, #289

{ "context": { "rules": [ { "priority": "critical", "content": "Use bcrypt for passwords..." }, { "priority": "high", "content": "All handlers accept context.Context..." } ], "adrs": ["ADR-001", "ADR-007"], "activeWork": { "sarah.chen": "Refactoring auth module" }, "tokenBudget": 3200 } }

Rules Library

Create, organize, and prioritise team conventions. Set file patterns, tags, and priority levels. Version history tracks all changes.

Applied to: auth/**, security/**
Priority: CRITICAL
Used: 1,342 times this week

Architecture Decisions

Document why you chose PostgreSQL over MongoDB. Track decision status, link to PRs, and understand consequences.

Status: ACCEPTED
Related: PR #234, #267
Impact: datastore/**

Prompt Library

Share tested prompts that work. Track effectiveness, usage stats, and team ratings. One-click copy to clipboard.

"Generate Go table-driven tests"
Effectiveness: 92% helpful
Used: 45 times

GitHub Integration

Automatically extract patterns from PR discussions. Convert code review comments into rules. Never lose important decisions.

Webhook: Active
PRs analyzed: 234
Patterns found: 47

MCP Server

Universal compatibility with all MCP-enabled tools. Sub-200ms response times. Smart token budget management.

Protocol: MCP v1.0
Latency: 143ms avg
Uptime: 99.99%

Team Coordination

See who's working on what in real-time. Prevent merge conflicts before they happen. Get alerts about overlapping work.

Active now: 8 developers
Conflicts prevented: 23
Work areas: auth/*, api/*

Analytics Dashboard

Track context effectiveness, usage patterns, and team productivity. Identify dead rules and measure onboarding success.

Context quality: 92%
Rules accessed: 1,342/day
Time to first PR: 3 days

Smart Filtering

AI-powered relevance scoring ensures only applicable context is served. Respects token budgets. Priority-based selection.

Relevance score: 94%
Tokens saved: 68%
False positives: <2%

CLI Tool

Fetch context from terminal. Create rules on the fly. Integrate with scripts and automation. Works offline with cache. Coming soon

$ Cont3xt fetch
$ Cont3xt rule add
$ Cont3xt search "auth"

Add Knowledge

Document your architectural decisions, security policies, and team conventions. Use our default rulesets or create your own.

Install MCP Server

One-line installation for your AI tools. Works with Cursor, Claude Code, VS Code, JetBrains, and any MCP-compatible assistant.

Start Building Better

Your AI tools now have perfect team context. Watch context failures drop, productivity soar, and onboarding time collapse.

Free

Perfect for individual developers exploring context management

$0/month

Individual use only

30 rules/ADRs/prompts
1,000 MCP search requests/month
30-day data retention
Basic integrations (VS Code, CLI)
Community support

Get Started

Pro

For individual power users who need more

$20/month

Individual use only

Unlimited rules/ADRs/prompts
10,000 MCP search requests/month
90-day data retention
All individual integrations
Priority support

Join For Free

Team

For teams that need to share context and collaborate

$30/dev/month

Minimum 5 seats ($150/month)

Everything unlimited
GitHub integration with automatic ADR extraction
Team collaboration features
Shared rules and patterns
Team activity feed
Role-based permissions
All integrations (Slack, Jira, Linear)
6-month data retention
Analytics dashboard
Priority support with SLA

Join For Free

Enterprise

For organizations with advanced needs

Custom

200+ developers

Everything in Team
SSO/SAML authentication
On-premise deployment
Custom integrations
Audit logs
Unlimited retention
Custom SLA
Professional services
Volume discounts

Contact Sales

All plans include 30-day money-back guarantee. Annual billing available with 20% discount.

Why do I need to pay for 5 seats minimum?

Team features are designed for collaboration. Our data shows teams smaller than 5 don't get full value from shared context. For individual use, our Pro plan is perfect.

Why is GitHub integration not in Pro?

GitHub PR analysis and ADR extraction are inherently team features. Individual developers working alone don't have the PR review process that generates these insights.

Can we start with fewer than 5 seats?

For smaller teams, we recommend starting with individual Pro accounts. Once you're ready for team collaboration and GitHub integration, the Team plan will be waiting.

Is there a free trial for Team?

Yes, 14-day free trial with full Team features. No credit card required.

How does Cont3xt.dev compare to similar tools?

We complement tools like GitHub Copilot ($19-39/user) rather than compete with them. Unlike manual solutions like Cursor Rules, we provide automated, team-wide context management that saves 2-3 hours per developer per week.

What happens when I hit my limits?

We'll notify you before you hit your limits and make it easy to upgrade. You won't lose access to your existing data, but you'll need to upgrade to add more content or make more requests.

Stop watching your AI tools fail

Give your team's AI assistants the context they need to succeed. No credit card required.

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