kitio.aiSentry vs AgentsKB
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. AgentsKB is completely free, while Sentry is freemium.
At a glance
Best for
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- Error monitoring
- Tracing and profiling
- Session replay
- Seer AI debugging agent
- AI code review
- Sentry MCP server
- Verified answers with sources
- Instant and research modes
- MCP server
- REST API
- Batch queries
| Feature | Sentry | AgentsKB |
|---|---|---|
| Best for | Error and performance monitoring with an AI debugging agent | Free verified knowledge base that coding agents query via MCP |
| Category | Coding | Coding |
| Pricing model | Freemium | Free |
| Starting price | See pricing page | Free |
| Free plan | Yes | Yes, fully free |
| Made by | Functional Software (Sentry) | AgentsKB |
| Based in | United States | – |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
AgentsKB is completely free, while Sentry is freemium.
Free plan
Cheapest paid plan
Top plan
Free trial
4 plans
Developer
Free
- Limited to one user
- Error monitoring and tracing
- 10 custom dashboards
- MCP access
Team
$26/mo billed yearly
- Unlimited users
- Third-party integrations
- 20 custom dashboards
- Seer available as add-on
Business
$80/mo billed yearly
- Unlimited custom dashboards
- Advanced quota management
- SAML and SCIM support
Enterprise
Contact sales
- Technical account manager
- Dedicated support
Prices in USD, checked Nov 5, 2026 or later. Plans change often, so confirm on each tool's site before you buy.
Pros and cons
Sentry
- Free plan for solo developers
- AI debugging works from real error data
- Wide SDK coverage
- Integrates with GitHub and Slack
- Seer needs a separate subscription
- Free plan is limited to one user
- Costs rise with event volume
AgentsKB
- Free with no signup or API key
- Answers link to official docs
- Fast responses for agents
- Coverage focused on developer technologies
- Research mode answers are slower
- Rate limited to 20 requests per second
Which one should you choose?
Choose Sentry if you want:
- Free plan for solo developers
- AI debugging works from real error data
- Wide SDK coverage
Watch out: seer needs a separate subscription.
Choose AgentsKB if you want:
- Free with no signup or API key
- Answers link to official docs
- Fast responses for agents
Watch out: coverage focused on developer technologies.
Sentry vs AgentsKB FAQ
What is the difference between Sentry and AgentsKB?
Sentry: Error and performance monitoring with an AI debugging agent. AgentsKB: Free verified knowledge base that coding agents query via MCP. Both are coding tools.
Is Sentry or AgentsKB cheaper?
AgentsKB is completely free, while Sentry is freemium.
Do Sentry and AgentsKB have free plans?
Sentry: Yes. AgentsKB: Yes, fully free.
Who makes Sentry?
Sentry is made by Functional Software (Sentry), based in United States.
Who makes AgentsKB?
AgentsKB is made by AgentsKB.
Which should I choose, Sentry or AgentsKB?
Choose Sentry if you value free plan for solo developers and ai debugging works from real error data. Choose AgentsKB if you value free with no signup or api key and answers link to official docs.