By name: daytona description: > Daytona sandbox knowledge for answering user questions about remote development environments. Use when the user asks about Daytona, sandboxes, remote execution, cross-platform builds, or needs to run code on cloud infrastructure instead of locally. Provides API details, pricing, troubleshooting, and CLI commands.
Daytona — Agent Knowledge Base
What Daytona Is
Daytona is an open-source platform for running AI-generated code in isolated sandboxes. Each sandbox is a full container (Docker) with its own kernel, filesystem, network stack, vCPU, RAM, and disk. Sandboxes spin up in under 90ms.
The user's project (specgen) uses Daytona for:
- Cross-platform builds (ARM64 Termux → x86_64 Linux)
- Running CI pipelines remotely
- Testing on clean environments
- Agent-driven development workflows
Tools Available to the User
The specgen project has TWO ways to interact with Daytona:
1. Rust CLI (works on Termux, no Bun needed)
# Set API key
export DAYTONA_API_KEY="dtn_..."
# Using sandbox crate directly
cargo run -p specgen-sandbox -- spin --provider daytona \
--repo https://github.com/bl1nk-bot/specbl1z.git \
--branch main --name my-sandbox
cargo run -p specgen-sandbox -- exec --id <sandbox-id> \
--cmd "make all"
cargo run -p specgen-sandbox -- sync --id <sandbox-id> \
--branch cleanup/reorg
cargo run -p specgen-sandbox -- delete --id <sandbox-id>
2. OpenCode plugin (needs Bun, macOS/Linux only)
daytona:spin repoUrl=... branch=... name=...
daytona:exec sandboxId=... command=...
daytona:sync sandboxId=... branch=...
daytona:delete sandboxId=...
Daytona API Reference (verified from https://app.daytona.io/api)
Base URL: https://app.daytona.io/api
| Operation | Method | Endpoint | Auth |
|---|---|---|---|
| Create sandbox | POST | /sandbox |
Bearer token |
| Clone repo | POST | /sandbox/{id}/clone |
Bearer token |
| Execute command | POST | /sandbox/{id}/exec |
Bearer token |
| Delete sandbox | DELETE | /sandbox/{id} |
Bearer token |
| List sandboxes | GET | /sandbox |
Bearer token |
Auth header: `Authorization: Bearer *** Pricing (verified from https://www.daytona.io/pricing, 2025-06)
$200 free compute credits included.
| Resource | Per Hour | Per Second |
|---|---|---|
| vCPU | $0.0504 | $0.00001400 |
| GPU H100 | $3.95 | $0.001097 |
| GPU RTX PRO 6000 | $3.03 | $0.000842 |
| Memory | $0.0162/GiB | $0.00000450/GiB |
| Storage | $0.000108/GiB (5GB free) | $0.00000003/GiB |
| Windows | $0.0858/vCPU | — |
| Android | $0.0504/vCPU | — |
Daytona now supports GPU (H100, RTX PRO 6000) and bills per-second.
Common User Questions
"How do I test my ARM64 build on x86_64?"
Daytona provisions x86_64 sandboxes by default. The user can:
export DAYTONA_API_KEY="dtn_..."cargo run -p specgen-sandbox -- spin --provider daytona --repo <url> --branch <branch>cargo run -p specgen-sandbox -- exec --id <id> --cmd "make all"cargo run -p specgen-sandbox -- sync --id <id>cargo run -p specgen-sandbox -- delete --id <id>
Alternative without API key: Use GitHub Actions (cross-platform.yml already tests x86_64).
"I left a sandbox running, what now?"
- List running sandboxes:
curl -H "Authorization: Bearer $DAYTONA_API_KEY" https://app.daytona.io/api/sandbox - Sync unsaved work:
cargo run -p specgen-sandbox -- sync --id <id> - Delete:
cargo run -p specgen-sandbox -- delete --id <id>Cost for 3 hours idle: ~$0.15
"Daytona vs Modal vs Docker?"
| Daytona | Modal | Docker (local) | |
|---|---|---|---|
| Cost/hr (CPU) | $0.0504/vCPU + $0.0162/GiB RAM | per physical core $0.125/hr | free |
| GPU | H100 $3.95/hr, RTX PRO $3.03/hr | T4 $0.59/hr, A100 $2.10/hr, H100 $3.95/hr | depends |
| Free credits | $200 | $30/month | — |
| Setup | API key | token+secret | Docker install |
| Best for | full containers, Android target | serverless, per-cycle billing | local dev |
| Billing | per-second | per CPU cycle (not wall-clock) | — |
Recommendation flow:
- Quick local test → Docker (
make docker-build) - CPU build, cross-platform → Daytona
- GPU/ML, cheapest compute → Modal
- CI/CD → GitHub Actions (free for public repos)
Error Troubleshooting
| Error | Cause | Fix |
|---|---|---|
DAYTONA_API_KEY not set |
No API key in env | Get key from https://app.daytona.io/dashboard/keys |
sandbox creation failed |
Network/quota issue | Wait 30s, retry; check quota on dashboard |
exec exit code != 0 |
Command failed in sandbox | Read output, fix command, retry |
sync conflict |
Branch diverged from remote | Run git pull --rebase inside sandbox first |
connection refused |
API endpoint wrong | Verify DAYTONA_API_URL (default: https://app.daytona.io/api) |
SDK Languages Available
- TypeScript:
npm install @daytonaio/sdk - Python:
pip install daytona - Go:
go get github.com/daytonaio/daytona/libs/sdk-go - Ruby:
gem install daytona - Java:
implementation("io.daytona:sdk-java:0.1.0")
References
- Docs: https://www.daytona.io/docs
- API Reference: https://www.daytona.io/docs/tools/api/
- TypeScript SDK: https://www.daytona.io/docs/typescript-sdk
- OpenCode Guide: https://www.daytona.io/docs/guides/opencode/