Is Castari still operating as an AI agent infrastructure company?

No. As of mid-2026, Castari's site states Castari Cloud is sunsetting and being open-sourced, with the founding team now building MadeThis, an autonomous business platform, per castari.com.

Is Castari profitable?

No. Castari reported $0 revenue as of February 1, 2026, and remained pre-revenue as of March 3, 2026 with only about 90 users and 25 active agents, per its own investor updates.

What happened to Castari, the YC F25 startup?

Castari sunset its original product, Castari Cloud, an agent sandbox and deployment runtime, and open-sourced the repo. The same founders pivoted to MadeThis, an AI co-founder platform for small businesses, as of mid-2026.

Castari's co-founders were Jacob Wright, who served as CEO, and Cambree Bernkopf, both named in the Launch YC post dated February 17, 2026. Both continued on to the successor product, MadeThis.

Is Castari's pivot, MadeThis, making money?

MadeThis reported crossing $40,000 in monthly revenue as of its July 1, 2026 investor update, a company-reported figure not independently audited, alongside about $1.55M cash on hand at that time.

Who are Castari's biggest competitors?

Castari operated alongside E2B, Modal, Daytona, Cloudflare, Vercel Sandbox, Northflank, Fly.io, and Blaxel in AI agent sandbox infrastructure. Daytona raised a $24M Series A on February 6, 2026, intensifying competitive pressure.

YC Fall 2025 · United States

Castari

castari.com ↗

Made a secure sandbox/runtime for AI agents, then shelved it for a new startup.

Little protection left

Assessed 27 July 2026 · Evidence as of 27 July 2026

Not much stands between this business and its pressures.

On the recordSince 27 July 2026 · Checkable from Q3 2026 · Every call on the record Checkpoint: MadeThis's stated push to hit $85K monthly revenue

The call

Castari Cloud was launched, then abandoned within months as its own team moved on to a different company, MadeThis.

Castari tried to coordinate basic computing tasks across platforms like Cloudflare, Vercel, and Modal, but it was essentially a layer on top of existing services anyone could already use. Cloudflare, Vercel, and Modal themselves can add the same coordination features Castari offered, and AI companies like Anthropic are building agent runtimes directly into their own products, making a middleman unnecessary. The founders abandoned the product in about six months despite having runway and funding, which suggests they found no real reason customers would stick with them instead of going straight to the underlying platforms.

Why

AI pressure: Anthropic and other frontier labs building native hosted-agent runtimes. If model labs bundle their own agent sandboxes, standalone runtime layers like Castari's become unnecessary middlemen. Could AI do the core job? Yes, likely.

Bigger players: Cloudflare, Vercel, Modal, Daytona. These platforms already run sandboxes and agent execution on infrastructure Castari's tool was just a layer on top of. Could a giant copy it? Yes, easily.

What protects it. None apparent: the founders themselves stopped operating Castari Cloud and open-sourced it by mid-2026.

What would change this call

Whether MadeThis reaches its stated $85K MRR target by late 2026. Shows if the founders' pivot away from Castari is gaining real traction.
Cloudflare, Vercel, or Modal announcing native agent-runtime or sandbox lifecycle features. Confirms incumbents are absorbing the exact niche Castari tried to serve.
Whether Castari's open-sourced code sees any independent maintainers or forks. Indicates if the underlying tech had value beyond its original team.

Key numbers

Cash on hand ~$1.8M (2026-03-03)
Monthly burn ~$22K, ~82 months runway (2026-03-03)
Daytona (rival sandbox vendor) raised $24M Series A (2026-02-06)

Named risks

Original product, Castari Cloud, was sunset roughly six months after February 2026 launch. Severity: high
Pre-revenue at shutdown despite $1.8M plus cash and 82 month runway, indicating weak product market fit. Severity: high
Successor MadeThis operates in a crowded AI business automation space facing similar commoditization pressure. Severity: medium
MadeThis's $40K MRR figure as of July 2026 is self-reported by the company and not independently audited. Severity: medium
Underlying sandbox/runtime category is rapidly commoditized by well-funded platform vendors. Severity: medium

Rivals, as read in July 2026

Rival	Direction	Evidence
Daytona	gaining on	Raised $24M Series A on 2026-02-06 to scale competing sandbox infrastructure
E2B	gaining on	E2B self-reports (vendor-claimed) roughly 88-94% Fortune 100 adoption, no date given
Cloudflare, Vercel, Modal	contesting	Shipped native sandbox and deployment features throughout 2026, commoditizing Castari's wrapper layer

Questions people ask

Is Castari still operating as an AI agent infrastructure company?: No. As of mid-2026, Castari's site states Castari Cloud is sunsetting and being open-sourced, with the founding team now building MadeThis, an autonomous business platform, per castari.com.
Is Castari profitable?: No. Castari reported $0 revenue as of February 1, 2026, and remained pre-revenue as of March 3, 2026 with only about 90 users and 25 active agents, per its own investor updates.
What happened to Castari, the YC F25 startup?: Castari sunset its original product, Castari Cloud, an agent sandbox and deployment runtime, and open-sourced the repo. The same founders pivoted to MadeThis, an AI co-founder platform for small businesses, as of mid-2026.
Who founded Castari?: Castari's co-founders were Jacob Wright, who served as CEO, and Cambree Bernkopf, both named in the Launch YC post dated February 17, 2026. Both continued on to the successor product, MadeThis.
Is Castari's pivot, MadeThis, making money?: MadeThis reported crossing $40,000 in monthly revenue as of its July 1, 2026 investor update, a company-reported figure not independently audited, alongside about $1.55M cash on hand at that time.
Who are Castari's biggest competitors?: Castari operated alongside E2B, Modal, Daytona, Cloudflare, Vercel Sandbox, Northflank, Fly.io, and Blaxel in AI agent sandbox infrastructure. Daytona raised a $24M Series A on February 6, 2026, intensifying competitive pressure.

Timeline

2026-07-01MadeThis investor update reports $40K monthly revenue and new co-founder Santi Gomez Paz joins
2026-06Castari Cloud sunset announced on castari.com; team pivots to MadeThis
2026-03-03Castari investor update: pre-revenue, 90 users, 25 active agents, $1.8M cash, ~82 month runway
2026-02-21Castari open-sources its CLI repo on GitHub
2026-02-17Castari launches publicly via Launch YC as runtime for AI agents
2026-02-06Competitor Daytona raises $24M Series A led by FirstMark Capital
2026-02-01Castari investor update reports $0 revenue and $1.85M cash on hand

Revision history

27 July 2026

First assessed. Little protection left. The text above is fixed as of this date and is not edited afterwards.

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