# Sandbox0

> sandbox0.ai | Compute; 1 record: free tier, limits, identity cost and evidence.

HTML https://fshy.ajam.dev/p/sandbox0/ | JSON https://fshy.ajam.dev/api/v1/entity/sandbox0.json | how to read a record: https://fshy.ajam.dev/llms-full.txt

## Sandbox0

- `compute/sandbox0` | qualifies-with-caveat | evidence documented | binding request-rate | category container and VM sandbox
- needs card no, phone no, ID no, institution no | verified 2026-11-04T02:24:09.966Z (live) | stale on 2026-12-05
- url https://sandbox0.ai/pricing
- free tier: $5 of free credit for new users with no card and no one-hour compute minimum; a paused sandbox is charged storage only | unit: mixed | metered on: wall-clock | read on: 2026-10-22 | source: [1]
- per-object cap: not stated | source: [1]
- retention: not stated | source: [1] | note: not stated
- egress: Network ingress is free and network egress is free for now (the page marks egress as temporary); no allowance in bytes and no overage price is published. | metered: no | source: [1]
- identity: email | detail: 'No credit card required', quoted from the pricing page read 2026-10-22
- interface: rest, cli, ssh
- limits:
  - request-rate (binding): $5 of free credit for new users, one time [1]
  - per-object-cap: 2,000 paused sandboxes per team by default [1]
- limits note: not stated
- interface detail: HTTP API at /api/v1/sandboxes, open-source SDKs, the s0 CLI, and SSH to a sandbox
- tooling: the same as limits note
- composes with: the same as limits note
- reliability: no reliability event recorded
- evidence note: the pricing page was read on 2026-10-22. The free credit is one-time; the durable facts are the absence of a one-hour minimum and the 2,000 paused-sandbox cap
- extras:
  - keep_rate: 0.0
  - keep_rate_basis: first-party: pply to Sandbox. The example uses a custom 2 vCPU / 6 GiB instance: Cloudflare requires at least 3 GiB per vCP
  - billing_model: unclassified
  - session_cap.restart_required: no
  - session_cap.note: no wall-clock cap and no one-hour minimum; a paused sandbox keeps state for a storage charge
  - persistent_storage.price_gib_month: billed by time and effective incremental data
  - persistent_storage.durability: paused sandboxes retain state
  - persistent_storage.survives_stop: yes
  - persistent_storage.survives_destroy: no
  - persistent_storage.max_retention: the 2,000-paused-sandbox cap bounds how many, not how long
  - free_tier_kind: one-time-credit
  - granularity.min_billed_s: 0
  - burst_x: 1.0
- evidence:
  - [1] 2026-10-02: 
  - [1] 2026-10-22: '$5 free credit for new users. No credit card required.' and 'No one-hour compute minimum. Paused sandboxes incur storage charges only. Keep up to 2,000 paused sandboxes per team by default', quoted
  - [1] 2026-11-03: egress is free for now, with no allowance or price published | capture: sha256:7938237949658d054b0e2d23d8ffe0496ea5356ca0b7a73400eb13134fcf2372 | quote: Ingress is free, egress is temporarily free, and object-store GET and PUT requests have no per-request charge.
  - [2] 2026-11-03: REST API, SDKs and the s0 CLI exist | capture: sha256:dce8fcae7e9c06df67d1f1b0c990713f58d58225cb25945903faacfc165d74a1 | quote: Use the APIs, open-source SDKs, templates, and s0 CLI to build on a managed runtime with persistent workspaces and on-demand compute.
  - [3] 2026-11-03: SSH is an access path to a sandbox | capture: sha256:e39a37162efd3a0a89d0997afea489b06ca4342ee5a10bdf646fe1bc12709a7b | quote: Auto-resume on supported runtime API, SSH, and service access paths (default: true).
- sources:
  - [1] https://sandbox0.ai/pricing
  - [2] https://sandbox0.ai
  - [3] https://sandbox0.ai/docs