Happy Valley

agentmash vs Sentry

agentmash and Sentry are both developer tools tools. agentmash is aimed at developers and small businesses, while Sentry is aimed at developers. agentmash costs less, from $20/mo versus $29/mo for Sentry. Both have a free plan.

agentmash

Shared room that warns coding agents before they edit the same file

Sentry

Error and performance monitoring

PricingFreemium · $20Freemium · $29
Starting price$20/mo$29/mo
Free planYesYes
Free trial30 days14 days
Built forDevelopers, Small businesses, EnterpriseDevelopers
Platformsmacos, windows, linuxweb
Country—US · 2012
Rating——

Choose agentmash if

Engineering teams where several developers run AI coding agents on the same repository at once.

  • Pricing counts developers only, with unlimited agents
  • Free for two developers, and Team's first month is free
  • Server does not see code unless a room enables diffs

Look elsewhere if: Solo developers or teams that just need a single coding agent (Cursor) without cross-machine coordination.

Choose Sentry if

Engineering teams of any size that want to know when and why code breaks.

  • Best developer experience for debugging errors
  • SDKs for everything
  • Free tier for individuals

Look elsewhere if: Infrastructure metrics and logs at scale (Datadog, Grafana).

agentmash vs Sentry pricing

agentmash

  • Free$0Up to 2 developers, 1 private repo, 7 days of history
  • Team$20/moPer developer, unlimited private repos, 90 days; $16 billed yearly
  • EnterpriseFrom $15,000/yrSelf-hosting from a private Docker image, invoiced

Sentry

  • Developer$01 user, 5k errors, 5 GB logs
  • Team$29/mo$26/mo billed annually; unlimited users, 50k errors
  • Business$89/mo$80/mo billed annually; 50k errors, 90-day lookback
  • EnterpriseCustomCustom quotas and support

agentmash · Key features

  • Pre-edit warnings naming the teammate, branch and task behind a change
  • Advisory path claims so agents split work before starting
  • Strict mode that blocks edits into a teammate's change until acknowledged
  • Prompts sent to a teammate's agent that run only after their approval
  • Team chat whose latest messages reach every agent before its next prompt
  • Lobby desktop app for Mac and Windows running agents side by side

Cons

  • Sign-in requires GitHub; GitLab and Bitbucket need extra setup
  • No Linux desktop app, only the CLI
  • Continue and Zed get MCP tools only, without live edits in the room

Sentry · Key features

  • Error tracking with stack traces, breadcrumbs and release tracking
  • Performance tracing and profiling
  • Session Replay tied to errors
  • Cron and uptime monitoring
  • Seer AI for root cause and fix suggestions
  • Suspect commits, issue ownership and alerting rules

Cons

  • Costs scale with event volume; sampling needed
  • Self-hosting is heavy
  • Alert noise without tuning

agentmash vs Sentry: FAQ

Which is cheaper, agentmash or Sentry?

agentmash starts at $20/mo and Sentry at $29/mo. Both prices are checked on the vendors' own pricing pages.

Do agentmash and Sentry have a free plan?

Yes, both agentmash and Sentry have a free plan; paid plans add more usage and features.

Which is better for small businesses, agentmash or Sentry?

agentmash lists small businesses as a core audience, while Sentry is aimed more at developers.

Not sure yet?