Real world sandboxes for testingand training AI agents.

Deploy simulation environments with stateful twins of the APIs, CLIs, and MCPs your agents use.

Book a demoStart a sandbox
Arga Labs
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Twin Runs

Spin up short-lived or permanent service twins without deploying app code.

Service twins

4 selected

API-only

HubSpot
Salesforce
Linear
Box
Jira
Unified
Unstructured
Attio
Twilio

API + UI

Discord
Dropbox
GitHub
Google Calendar
Google Drive
LinkedIn
Notion
Slack
Stripe
Gmail
Outlook

Session type

Short-livedPermanent

Expires automatically after 60 minutes.

Describe the twin state (optional)

Start twin run

Trusted by engineering teams at

  • Corgi
  • Bolto
  • Monaco
  • Weave
  • Aemon
  • Y Combinator
  • Hyperspell
  • Respan

Backed by leading investors

  • General Catalyst
  • SV Angel
  • BoxGroup

Run the real world on demand.

Connect twins by changing one line of code.

Start from your system

Deploy your agent in staging, a preview server, or locally.

Arga Labs
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Twin run · RUN-2048

Environment ready

Support agent sandbox · 58 minutes remaining

Ready
ServiceEndpointStatus
Slackhttps://slack.run-2048.twins.argalabs.com Serving
GitHubhttps://github.run-2048.twins.argalabs.com Serving
Google Calendarhttps://gcal.run-2048.twins.argalabs.com Serving
Stripehttps://stripe.run-2048.twins.argalabs.com Serving

Connect the twins

Change one base URL to connect Arga's twins, then seed scenarios with mock or production data from your services.

.env — support-agentEDITING

$ open .env

SLACK_API_BASE_URL=https://slack.com/api
GMAIL_API_BASE_URL=https://gmail.googleapis.com
CALENDAR_API_BASE_URL=https://www.googleapis.com/calendar/v3
GITHUB_API_BASE_URL=https://api.github.com
✓4 API base URLs now point to Arga twins

Compare outcomes

Let agents act, capture the full trace, and assess the behaviour with full transparency of the services' state.

Arga Labs
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Request activity

Every provider call, response, latency, and side effect.

Outcome

Passed

MethodRequestStatusLatency
GET/gmail/v1/users/me/messages/77820082ms
POST/slack/api/chat.postMessage200104ms
GET/drive/v3/files/policy-920068ms
POST/github/check-runsBLOCKED12ms

4

Provider calls

0

Forbidden effects

266ms

Total latency

Everything your software needs to act, without the risk.

Twins

Full clones with API, MCP, and CLI support for third-party services your agents need to read from and write to.

Scenarios

Describe the scenario in natural language and get a seeded service with mock data, or seed the services with real data from prod.

Test runs

Automate evals after agents run in Arga. Define judging criteria and grade performance for every commit or PR.

Evidence

Capture every provider call, response, latency, side effect, and service-state change across a run.

Make your agents more capablein the real world.

Spin up isolated environments with API twins, full traces, and production-data for apps and agents that need to act.

Spin up a twin