# Agent 37

Official pricing: https://www.agent37.com/pricing  
Category: agent-sandbox · Isolation: gvisor

## Pricing regimes (raw)

- **Standard (no dedicated cores)** (resource): $0.0010958904109589042/vCPU-h, $0.0009589041095890411/GiB-h [burstable]
- **Dedicated Performance** (resource): $0.004383561643835617/vCPU-h, $0.0038356164383561643/GiB-h
- **VM instance (full VM, own kernel + KVM)** (resource): $0.0027397260273972607/vCPU-h, $0.002397260273972603/GiB-h
- **Managed OpenClaw/Hermes hosting (flat monthly per instance)** (sizes): Basic 1 vCPU/4 GiB $0.005466/h; Plus 1 vCPU/4 GiB $0.013685/h; Pro 2 vCPU/8 GiB $0.041082/h; Max 4 vCPU/16 GiB $0.136973/h [alt]

## Features

Yes: snapshots, memory snapshots, fork/clone, pause/resume, persistent disk, whole disk survives a stop, idle auto-stop, ≥24 h sessions, custom image (Docker or snapshot), start from your own snapshot, your own Docker/OCI image, root, browser, desktop GUI, computer-use API, browser + desktop control, preinstalled agents, SSH, HTTPS preview URLs, custom domains, open internet, SOC 2, Python, Node.js, wake on request, live resize, live fork (no pause), scheduled runs (cron), spend limits, usage per sandbox (API), automatic snapshots, snapshots on demand, agent harness API, gVisor or VM (no shared kernel), inbound access rules, secret proxy

No: volumes, full VM (own kernel), Docker inside, nested virtualization, anti-bot stealth, CAPTCHA solving, residential IPs, public IPv4, egress allowlist, static egress IP, self-hosting, BYOC, open source, HIPAA, SSO, GPU, arm64, Windows, macOS, HTTP method/path egress rules, memory fork, EU data residency, MCP server, hosted agent API (their own agent), firewall inside (nftables), secret proxy for any API, extra volumes, shared volumes, FUSE mounts, kernel features (eBPF, mounts, cgroups)

Unknown: everything else. Evidence (source + quote) per feature: https://battleships.dev/data/providers/agent-37.json → feature_evidence

## Company

- Ownership: independent
- Stage: pre-seed [source](https://www.ycombinator.com/companies/agent-37)
- Accelerators: Y Combinator Fall 2026 [source](https://www.ycombinator.com/companies/agent-37)
- Total raised: unknown
- Last round: unknown (unknown)
- Investors: Y Combinator
- Revenue: unknown

YC hint confirmed: the YC company page (https://www.ycombinator.com/companies/agent-37, batch Fall 2026, status Active) links to https://www.agent37.com/cloud, the same domain as the provider's pricing page (agent37.com), and describes 'Persistent sandboxes for agents like hermes, openclaw, claude code' which matches the card's OpenClaw/Hermes managed-hosting product. Founder is Vishnu Krishnaprasad (ex-Amazon, ex-Quantcast). No funding amount, lead investor, or revenue figures were publicly disclosed as of the check date; the company is very early stage (0 employees per YC listing, Show HN posts from Dec 2025-Feb 2026).

## Caveats

- Cloud API uses monthly resource rates divided by 730 then by 60 for minute metering. Running and start/stop transitions bill allocation, NOT measured CPU utilization.
- Dedicated Performance compute is 4x CPU and RAM, VM instances 2.5x, disk unchanged on both. Managed hosting (agent37.com/personal) is a separate flat monthly per-instance product; model allowances are not compute credits.
- Instance cap: 1 before top-up, 10 after any top-up, 50 at $100 lifetime top-ups, 200 at $250; not a monthly fee. The cap counts every instance that is not deleted or failed, sleeping and stopped ones included, so it limits instances held, not instances awake. Create needs one day of balance, not a debit.
- Cold parked compressed files $0.03/GB-month versus reserved hot disk $0.09. Non-payment suspension is unbilled and deletes after 30 days; ordinary persistence is until deletion. Default auto-topup buys $25 below $10.
- Null values mean unknown, not free/unlimited. No model-token cost, tax or unverified ancillary charge included.
- Native browser/device/task/credit prices with unknown CPU/RAM are deliberately non-priceable. Check regime before interpreting any partial resource estimate.
- Snapshot/state rate set to the cold-storage rate ($0.03/GB-mo on compressed bytes) that long-idle sleepers are moved to; a stopped-but-hot instance keeps paying $0.09 per reserved disk GB (billed as disk). No named-snapshot product documented.
- Rates verified against the public billing docs 2026-09-28 ($0.80/vCPU-mo, $0.70/GB-mo, per-minute metering), not on a live account; they are far below peers, treat as unverified in practice.
- Agent 37 sells two CPU tiers: Standard does not reserve cores for you (no guaranteed share published); Performance "run[s] on dedicated cores" at 4x the vCPU price. Only Standard carries the caveat, and only under sustained CPU load.
- No published create-rate or API rate limits (only 1 on-demand backup per instance per 15 min). Wake from checkpoint 'a few seconds' (5-15 s via start); cold-storage/relocation wake ~2 min (billed at disk rate). SSH documented (root by default).
- Isolation: "Every sandbox is enforced by gVisor" (agent37.com/cloud) for default and Performance instances. A separate "type": "vm" instance is a full VM with its own kernel and KVM (modelled as the vm mode, 2.5x default compute): Docker, Compose, k3s, Docker-in-Docker and /dev/kvm work there, not on the default type.
- Creating an instance requires one day of its running rate in the wallet (not debited); 503 no_capacity / 409 capacity_unavailable possible when hosts are full.
- Nested virtualization / Docker inside: no on the default gVisor type (no /dev/kvm, "cannot run a Docker daemon"); yes on the vm type (/dev/kvm present, dockerd preinstalled in agent37-ubuntu). Workloads that need Docker or KVM price on the vm mode.
- Disk range per shape: 2-12 GB on 2 vCPU/4 GB, 2-20 GB on 4/8, 2-40 GB on 8/16, 2-80 GB on 16/32 (billing docs, same on VM instances). The engine has no per-shape disk cap field, so a larger disk need (e.g. 50 GB) is not forced onto a bigger shape: price such workloads on 16/32, the only shape whose range covers 41-80 GB.
- Burstable: "burstable is an experimental instance type for low average CPU and RAM usage, with pricing starting at $1/month" (billing docs); needs an application to enable it per workspace and has no published rates or shapes, so it is not modelled as a mode.
- Starter credit is $5 (billing docs, /pricing and /cloud agree as of 2026-10-14), once per account and card, before the first top-up.
- Compliance: SOC 2 Type I, Type II in progress (agent37.com/cloud). Hosting: "Runs on dedicated servers in the United States" (docs glossary).

## How this provider charges


YC: Fall 2026; directory status **Active**. Research scope: public-product-researched. Source: https://www.ycombinator.com/companies/agent-37

Persistent sandboxes for agents like hermes, openclaw, claude code

## Regime table

| Regime | When it applies | How billed | Numbers | Source |
|---|---|---|---|---|
| Standard shared instances | Public listed mode | resource; CPU alloc, memory alloc | $0.0010958904109589042/vCPU-h + $0.0009589041095890411/GiB-h; multiplier 1 | https://www.agent37.com/pricing |
| Dedicated Performance | Public listed mode | resource; CPU alloc, memory alloc | $0.004383561643835617/vCPU-h + $0.0038356164383561643/GiB-h; multiplier 1 | https://www.agent37.com/pricing |
| Paid wallet | Plan limits apply | Monthly fee; credits only as stated | fee=0; included usage=$0; concurrent=200; max session h=None | https://www.agent37.com/pricing |
| Retained disk / GiB-month | Lifecycle/scope must be checked | Native add-on | $0.09 | https://www.agent37.com/pricing |
| Snapshots / GiB-month | Lifecycle/scope must be checked | Native add-on | unverified, not $0 | https://www.agent37.com/pricing |
| Egress / GiB | Lifecycle/scope must be checked | Native add-on | unverified, not $0 | https://www.agent37.com/pricing |
| IPv4 / month | Lifecycle/scope must be checked | Native add-on | unverified, not $0 | https://www.agent37.com/pricing |

## Verified billing facts and gotchas

1. Cloud API uses monthly resource rates divided by 730 then by 60 for minute metering. Running and start/stop transitions bill allocation, NOT measured CPU utilization.
2. Dedicated Performance compute is 4× CPU and RAM, disk unchanged. Managed hosting is a separate flat monthly per-instance product; model allowances are not compute credits.
3. Website advertises $5 starter credit but detailed billing docs say $1; one_time_credit left null until reconciled.
4. Instance cap: 1 before top-up, 10 after any top-up, 50 at $100 lifetime top-ups, 200 at $250; this is not a monthly subscription fee. Create needs one day of balance, not a debit.
5. Cold parked compressed files $0.03/GB-month versus reserved hot disk $0.09. Non-payment suspension is unbilled and deletes after 30 days; ordinary persistence is until deletion. Default auto-topup buys $25 below $10.
6. Cold parked storage is not proven arbitrary user snapshot storage; engine snapshot price remains null, cold rate retained natively.

Native pricing (not coerced into incompatible engine units):
```json
{
  "managed_hosting_monthly": {
    "Basic": 3.99,
    "Plus": 9.99,
    "Pro": 29.99,
    "Max": 99.99
  },
  "lifetime_topup_50_instances_usd": 100,
  "cold_compressed_storage_gb_month": 0.03
}
```

## Worked example

Requested: 4 vCPU/8 GiB, 50 simultaneous × 8 h/day × 22 days = **8,800 instance-hours**, 30% CPU; 50 GiB snapshots and 100 GiB egress. A month is 730 hours only when explicitly used in rate conversion.

Standard compute: 8,800×(4×0.80+8×0.70)/730=$106.08. Fifty 4/8 instances with default 6 GB reserved disk add 300×$0.09=$27/mo. If the separate 50 GiB are cold compressed files, add $1.50: $134.58 plus unknown egress. Need $100 lifetime top-ups to unlock 50 instances; it funds usage, not a fee. Performance compute is $424.33 before the same storage. Snapshot quantity cannot be assumed equal to reserved disk.

## Sources and coverage

- https://www.ycombinator.com/companies/agent-37
- https://www.agent37.com/pricing
- https://www.agent37.com/docs/agents-api/billing
- https://www.agent37.com/docs/llms-full.txt
- https://www.agent37.com/cloud
- https://www.agent37.com/docs

Page captures and documentation indexes/bundles are in `raw/`; provider JSON lists the evidence paths. HN query results were captured separately as `<id>--hn.txt`; they are discovery leads, not current tariff authority. Downloaded docs do not imply every feature was verified; unsupported assertions remain null.