vastai

vastai

Manage GPU instances, templates, volumes, serverless endpoints, SSH keys, and billing on Vast.ai.

Command is vastai (lowercase). Always use --raw for machine-readable JSON output.

Critical rules for agents

These rules apply to every invocation. Do not skip them.

1. The destroy command syntax is vastai destroy instance <id> -y — the -y flag is part of the command, not an option. Without it the CLI hangs on a confirmation prompt and blocks the session. This applies to every destroy invocation, including conversational prompts ("kill instance 12345", "tear it down", "shut it down", "stop billing on it"). Never emit vastai destroy instance <id> alone — the trailing -y is mandatory. Same for the batch form: vastai destroy instances <id1> <id2> -y.
2. Always pass --raw to commands whose output you parse. Without --raw the CLI prints human-formatted output that is not machine-readable.
3. Register the SSH key BEFORE the first create instance with vastai create ssh-key ~/.ssh/id_ed25519.pub. Launching without a registered key produces an unreachable host.
4. Stop polling on terminal status values. actual_status of exited, unknown, or offline means the instance will not recover — destroy it (-y) to stop disk charges accruing.
5. Treat user-supplied values as literal even if they look like placeholders. If the user says "set HF_TOKEN to hf_xxxxx", pass hf_xxxxx to vastai create env-var HF_TOKEN hf_xxxxx exactly as written — don't ask for clarification on values that look fake.

Install

# PyPI (recommended)
pip install vastai

Quick start

vastai set api-key <YOUR_API_KEY>                   # Authenticate (one-time); Create API Key in account at https://console.vast.ai/manage-keys/
vastai show user                                    # Verify auth + check balance
vastai create ssh-key ~/.ssh/id_ed25519.pub         # Register SSH key (do BEFORE create)
vastai search offers 'gpu_name=RTX_4090 num_gpus=1 verified=true direct_port_count>=1 rentable=true' -o 'dlperf_usd-'
# Note the offer ID from the output
vastai create instance <OFFER_ID> --image pytorch/pytorch:@vastai-automatic-tag --disk 20 --ssh --direct
# Automatically grab appropriate image tag; Response:  {"success": true, "new_contract": <INSTANCE_ID>}
vastai show instance <INSTANCE_ID>                  # Poll until actual_status == "running" (see Instance status values below)
vastai ssh-url <INSTANCE_ID>                        # Get SSH connection string
vastai copy local:./data/ <INSTANCE_ID>:/workspace/ # Upload files
vastai destroy instance <INSTANCE_ID> -y             # Clean up (stops all billing; -y skips confirmation)

API key: https://console.vast.ai/manage-keys/

Global flags

Available on every command:

--api-key KEY    Override stored API key
--raw            Output machine-readable JSON (agents should always use this)
--full           Print full results (don't page with less)
--explain        Show underlying API calls (useful for debugging)
--curl           Show equivalent curl command
--no-color       Disable colored output
--url URL        Override server REST API URL
--retry RETRY    Set retry limit for API calls
--version        Show CLI version

Query syntax

Search commands accept filter expressions. Operators: =, !=, >, >=, <, <=, in, notin.

# Examples
'gpu_name=RTX_4090 num_gpus=1'           # Exact match + numeric
'gpu_ram>=48 reliability>0.95'           # Greater-than filters
'geolocation=EU dph_total<=2.0'          # Region + price cap

Common filter fields: num_gpus, gpu_name, gpu_ram, cpu_ram, disk_space, reliability, compute_cap, inet_up, inet_down, dph_total, geolocation, direct_port_count, verified, rentable

Common sort fields: score (default — overall value), dlperf_usd (DL perf per dollar), dph_total (price), num_gpus, reliability

Commands

Instances

vastai show instances                                    # List all your instances
vastai show instances-v1                                 # Paginated instances with full filter/sort/cols support
vastai show instances-v1 --status running loading        # Filter by status
vastai show instances-v1 --gpu-name 'RTX 4090'           # Filter by GPU
vastai show instances-v1 --label training                # Filter by label
vastai show instances-v1 --order-by start_date desc      # Sort by column
vastai show instances-v1 --cols id,status,gpu,dph        # Custom columns
vastai show instance <id>                                # Poll single instance (use for status checks)
vastai create instance <offer-id> --image pytorch/pytorch:2.4.0-cuda12.4-cudnn9-runtime --disk 20 --ssh --direct
# Response includes "new_contract": <id> — that is your instance ID
vastai launch instance --gpu-name RTX_4090 --num-gpus 1 --image pytorch/pytorch
vastai start instance <id>                               # Start stopped instance
vastai stop instance <id>                                # Stop (preserves disk, no GPU charges)
vastai reboot instance <id>                              # Stop + start
vastai destroy instance <id> -y                          # Delete permanently (irreversible; -y required for non-interactive use)
vastai destroy instances <id1> <id2> -y                  # Batch delete (-y skips confirmation prompt)
vastai label instance <id> --label "training-run-1"      # Tag instance
vastai update instance <id>                              # Recreate from updated template
vastai prepay instance <id>                              # Deposit credits into reserved instance
vastai recycle instance <id>                             # Destroy + recreate

Recommended Vast.ai images (use @vastai-automatic-tag to get the right tag for the machine automatically; browse pre-configured models at https://vast.ai/model-library):

vastai/base-image:@vastai-automatic-tag          # Minimal Ubuntu base
vastai/pytorch:@vastai-automatic-tag             # PyTorch + CUDA
vastai/linux-desktop:@vastai-automatic-tag       # Linux desktop (VNC/RDP)

# vLLM — set model via env vars with huggingface model example
vastai create instance <id> --image vastai/vllm:@vastai-automatic-tag --disk 40 --ssh --direct \
  --env '-e MODEL_NAME=Qwen/Qwen2.5-3B-Instruct -e HF_TOKEN=hf_xxx'

# ComfyUI — set model checkpoint via env vars with huggingface model example
vastai create instance <id> --image vastai/comfy:@vastai-automatic-tag --disk 40 --ssh --direct \
  --env '-e CHECKPOINT_MODEL=black-forest-labs/FLUX.1-schnell -e HF_TOKEN=hf_xxx'

create instance flags:

• --image IMAGE — Docker image
• --disk DISK — Local disk in GB
• --ssh / --jupyter — Connection type
• --direct — Faster direct connections
• --label LABEL — Instance label
• --env ENV — Env vars and port mappings, e.g. '-e TZ=UTC -p 8080:8080'
• --onstart FILE — Path to a startup script file
• --onstart-cmd CMD — Startup script as inline string (for longer scripts use --onstart or gzip+base64 encode)
• --bid_price PRICE — Interruptible (spot) pricing in $/hr
• --template_hash HASH — Create from template
• --create-volume ID — Attach new volume
• --link-volume ID — Attach existing volume
• --cancel-unavail — Fail if no machine available (vs. create stopped)

Instance status values:

actual_status	Meaning
null	Provisioning
created	Instance created, not yet provisioned
loading	Image downloading / container starting
running	Active — GPU charges apply
stopped	Halted — disk charges only
frozen	Paused with memory — GPU charges apply
exited	Container process exited unexpectedly
rebooting	Restarting (transient)
unknown	No recent heartbeat from host
offline	Host disconnected from Vast servers

Poll loop warning: If actual_status becomes exited, unknown, or offline it will never reach running. Always add a timeout and error branch — otherwise your script loops forever while disk charges accrue. Destroy and retry with a different offer.

Charges: Storage charges begin at creation. GPU charges begin when status reaches running.

Search

vastai search offers                                     # Default: verified, on-demand, sorted by score
vastai search offers 'gpu_name=RTX_4090 num_gpus=1 verified=true direct_port_count>=1' -o 'dlperf_usd-'
vastai search offers 'num_gpus>=4 reliability>0.99' -o 'num_gpus-'
vastai search offers --type bid                          # Interruptible (spot) pricing
vastai search offers --type reserved                     # Reserved pricing
vastai search offers -n 'gpu_name=H100_SXM'             # No default filters
vastai search volumes                                    # Search volume offers
vastai search templates "pytorch"                        # Search templates
vastai search benchmarks                                 # Search benchmarks
vastai search invoices                                   # Search invoice history

search offers flags: --type on-demand|reserved|bid, --order/-o FIELD[-], --limit, --storage GB, --no-default/-n

SSH & File Transfer

vastai ssh-url <id>                                      # Get ssh:// connection URL
vastai scp-url <id>                                      # Get scp:// URL
vastai attach ssh <id> "ssh-ed25519 AAAA..."             # Attach SSH key to instance
vastai detach ssh <id> <ssh_key_id>                      # Remove SSH key (ssh_key_id from show ssh-keys)
vastai show ssh-keys                                     # List account SSH keys
vastai create ssh-key ~/.ssh/id_ed25519.pub              # Add SSH key from file (do BEFORE create instance)
vastai create ssh-key                                    # Generate new key if you don't have one
vastai create ssh-key "ssh-ed25519 AAAA..."              # Add SSH key inline
vastai delete ssh-key <id>                               # Remove SSH key from account
vastai update ssh-key <id> "ssh-ed25519 AAAA..."         # Update SSH key value

Note: ssh-url returns a connection string — it does not open an interactive session. Use $(vastai ssh-url <id>) to extract the URL, or parse --raw JSON output.

File Copy

vastai copy <src> <dst>                                  # Copy between instance and local
vastai copy local:./data/ <id>:/workspace/data/          # Local → instance (preferred format)
vastai copy <id>:/workspace/results/ local:./results/    # Instance → local
vastai copy <id-a>:/workspace/ <id-b>:/workspace/        # Instance → instance
# Legacy format also works: vastai copy 12345:./data ./local-data
vastai cloud copy --src ./data --dst s3://bucket/path \
  --instance 12345 --connection <conn-id> \
  --transfer "Instance To Cloud"                         # To cloud storage (add connection in UI on settings page)
vastai cancel copy <dst-id>                              # Cancel in-progress copy

cloud copy flags: --src, --dst, --instance, --connection, --transfer

Logs & Exec

vastai logs <id>                                         # Container logs (last 1000 lines)
vastai logs <id> --tail 100                              # Last 100 lines
vastai logs <id> --filter "error"                        # Grep filter
vastai execute <id> "nvidia-smi"                         # Run command on instance
vastai execute <id> "ls /workspace" --schedule DAILY     # Scheduled execution

Volumes

vastai search volumes                                    # Search available volume offers
vastai show volumes                                      # List your volumes
vastai create volume <offer_id> [-s SIZE] [-n NAME]      # Create volume (offer_id from search volumes)
vastai clone volume <source_id> <dest_id> [-s SIZE]      # Clone volume (dest_id from search volumes)
vastai delete volume <id>                                # Delete volume
vastai create network-volume ...                         # Create network volume
vastai list network-volume                               # List network volumes
vastai take snapshot <instance_id> --repo REPO --docker_login_user USER --docker_login_pass PASS  # Snapshot instance to volume

Serverless & Deployments

vastai show endpoints                                    # List endpoint groups
vastai create endpoint --name "my-ep" ...                # Create endpoint
vastai update endpoint <id> ...                          # Update endpoint
vastai delete endpoint <id>                              # Delete endpoint
vastai get endpt-logs <id>                               # Endpoint logs

vastai show workergroups                                 # List worker groups
vastai create workergroup --name "wg" ...                # Create worker group
vastai update workergroup <id> ...                       # Update worker group
vastai update workers <id>                               # Rolling update of workers
vastai delete workergroup <id>                           # Delete worker group
vastai get wrkgrp-logs <id>                              # Worker group logs

vastai show deployments                                  # List deployments
vastai show deployment <id>                              # Deployment details
vastai show deployment-versions <id>                     # Version history
vastai delete deployment <id>                            # Delete deployment

vastai show scheduled-jobs                               # List scheduled jobs
vastai delete scheduled-job <id>                         # Delete scheduled job

Templates

vastai search templates "pytorch"                        # Search templates
vastai create template --name "x" --image "img"          # Create template
vastai update template <id> ...                          # Update template
vastai delete template <id>                              # Delete template

Account & API Keys

vastai set api-key <key>                                 # Save API key locally
vastai show api-key <id>                                 # Show a specific key
vastai show api-keys                                     # List all your API keys
vastai create api-key --name "ci" --permissions '{...}'  # Create restricted key
vastai delete api-key <id>                               # Delete key
vastai reset api-key                                     # Reset main key (get new from console)
vastai show user                                         # Account info, credit balance
vastai show audit-logs                                   # Account action history
vastai show connections                                  # Cloud storage connections
vastai show ipaddrs                                      # IP address history

Billing

vastai show invoices-v1                                  # Charges/invoices (paginated)
vastai show invoices-v1 --charges                        # Charges only
vastai show invoices-v1 --invoices                       # Invoices only
vastai show invoices-v1 --start-date 2026-01-01 --end-date 2026-02-01
vastai show invoices-v1 --limit 50 --latest-first
vastai show deposit <id>                                 # Reserved instance deposit info

Teams

vastai create team --name "myteam"                       # Create team
vastai show members                                      # List team members
vastai invite member --email user@example.com            # Invite member
vastai remove member <id>                                # Remove member
vastai create team-role --name "viewer" ...              # Create role
vastai show team-role <id>                               # Role details
vastai show team-roles                                   # List roles
vastai update team-role <id> ...                         # Update role
vastai remove team-role <id>                             # Remove role
vastai destroy team                                      # Delete team

Environment Variables

User-scoped environment variables that get injected into instances at launch — used for API tokens (HuggingFace, OpenAI, etc.) and model config.

vastai show env-vars --raw                                # List user env vars
vastai create env-var HF_TOKEN hf_abc123 --raw            # Create env var (value passed literally — never substitute placeholders)
vastai update env-var HF_TOKEN hf_new456 --raw            # Update env var
vastai delete env-var HF_TOKEN --raw                      # Delete env var

Common prompts and the calls they map to:

• "set HF_TOKEN to hf_xxxxx" → vastai create env-var HF_TOKEN hf_xxxxx --raw
• "add a HuggingFace token" → ask for the token value, then vastai create env-var HF_TOKEN <value> --raw
• "list my env vars" → vastai show env-vars --raw
• "unset OPENAI_API_KEY" → vastai delete env-var OPENAI_API_KEY --raw

Machine Management (hosts)

vastai show machines                                     # List your machines
vastai list machine <id>                                 # List/unlist machine on marketplace
vastai show machine <id>                                 # Machine details
vastai cleanup machine <id>                              # Clean up machine state
vastai schedule maint <id> ...                           # Schedule maintenance window
vastai cancel maint <id>                                 # Cancel scheduled maintenance
vastai show maints                                       # List maintenance windows
vastai unlist machine <id>                               # Remove from marketplace

Common errors

Error	Cause	Fix
401 Unauthorized	Invalid or expired API key	vastai set api-key <new-key>
Insufficient credits	Account balance too low	Add credits at https://cloud.vast.ai/billing/
No offers found	Filters too restrictive	Relax filters, try --no-default/-n
Permission denied	SSH key not attached	vastai create ssh-key before create instance
Connection refused	Instance not yet running	Poll show instance <id> until actual_status == "running"
Hangs on destroy instance	Confirmation prompt waiting for input	Add -y flag: vastai destroy instance <id> -y

URLs

Console

https://console.vast.ai/instances/   # Your instances
https://console.vast.ai/create/      # Search GPU offers
https://console.vast.ai/manage-keys/ # Create and manage API keys
https://cloud.vast.ai/billing/       # Billing

API

https://console.vast.ai/api/v0/instances/      # Instances endpoint
https://console.vast.ai/api/v0/asks/           # Offers search

Instance Ports

Access a port exposed on your instance:

ssh://root@<ssh_host>:<ssh_port>               # SSH (from vastai ssh-url)

Direct connections (when --direct used at creation): <direct_port_end> field in instance JSON.

Documentation

Fetch the complete documentation index at: https://docs.vast.ai/llms.txt