Set up background agents for your team in minutes

Run agents in secure sandboxes with brokered credentials, reusable snapshots, connected tools, and sessions your team can inspect and steer.

Mistle Cloud Beta: Enjoy free usage during beta with up to 50 concurrent sandboxes
Start free

No credit card required.

Mistle session workspace showing an agent plan, pull request summary, and code diff

Features

Core product features

Connect the tools your team already uses

Start with GitHub, Slack, OpenAI, and a growing set of integrations.

AWS logo Datadog logo Jira logo GitHub logo Linear logo OpenAI logo PlanetScale logo SigNoz logo Slack logo

Configure agent sandboxes

Choose the agent harness, repositories and tools each session starts with. Configure the setup script that is used to create and refresh snapshots.

Integration

Resources & tools

OpenAI Codex
GitHub 2 repos, github-cli
Linear linear-mcp

Attribute agent work to the right person

Link GitHub and Slack accounts so work maps back to the human who started it.

Linked accounts

GitHub logo GitHub jlowhy
Slack logo Slack jonathan

Scheduled snapshots

Start sessions quickly from snapshots, with scheduled refreshes to keep tools and dependencies up to date.

Automatic refresh

Cron expression

0 9 * * 1

Jump into any agent session

Open a linked session to inspect, steer, or review agent work.

Mistlebot says

I'll audit the Dependabot PRs and run the relevant checks. (View session)

Trigger work from events or schedules

Respond to webhooks, app mentions, or cron schedules to automate engineering workflows.

Events

github.pull_request.opened
slack.app_mention

Schedules

0 9 * * 1-5
daily at 9:00

Security model

Credentials stay outside the sandbox

Agent calls to external tools leave the sandbox without credentials. A proxy applies policy, resolves the right credential, and injects authorization for each call.

Read the architecture docs

Sandbox

credentialless request

Proxy

policy + credentials

Upstream

authorized request

Use cases

Automate workflows from the tools you use

Turn issues into verified PRs

@mistle build the invite flow from this ticket

GitHub logo GitHub Linear logo Linear OpenAI logo OpenAI

Investigate production bugs

@mistle investigate checkout timeout

Slack logo Slack SigNoz logo SigNoz AWS logo AWS

Review PRs automatically

@mistle review diff, run tests, and harden coverage

GitHub logo GitHub

Run scheduled maintenance

@mistle review and merge dependabot PRs

GitHub logo GitHub

Pricing

Mistle Cloud is free during beta.

Mistle Cloud Beta

Free accounts include temporary expanded access during beta. After beta, the Free plan returns to the limits below.

  • Free usage during beta
  • Temporary access to up to 50 concurrent sandboxes
  • No credit card required

Free

For developers trying Mistle.

$0 per month
  • 2 concurrent sandboxes
  • Limited monthly sandbox runtime
  • External integrations
  • Triggers
Start free

Teams

For teams running Mistle together.

$250 per month + usage
  • Everything in Free, plus:
  • Unlimited concurrent sandboxes
  • Dedicated Slack support

Enterprise

For orgs with enterprise requirements.

Custom pricing
  • Everything in Teams, plus:
  • Custom deployment requirements
  • Security and compliance needs
Talk to us