Is Coasts profitable in 2026?

No. Coasts is a free, open source CLI with no disclosed revenue, customers, or pricing tier as of 2026-07-01. Its own site markets it as 'Free, OSS, no AI upsells,' meaning there is currently no monetization model at all.

Could AI coding tools like Claude Code or Cursor replace Coasts?

Very plausibly. As of 2026-04-27, Claude Code, Cursor, Codex, and Conductor already support git worktrees natively, and analysts flag that these harness vendors face zero cost to add native port/service isolation, which is Coasts' entire value proposition.

Who founded Coasts and is it a first-time founder?

Coasts was founded by Jamie Sunderland, a second-time YC founder who previously started Cheqout (YC W21), per the YC company profile as of the company's Fall 2025 batch listing.

Who is Coasts' biggest competitor?

Free OSS clones already exist, notably 'galactic,' which had 214 GitHub stars as of 2026-05-29, plus tools like 'wt.' The bigger threat is the AI harness vendors themselves (Claude Code, Cursor, Codex) absorbing the feature natively.

Has Coasts raised venture funding?

Coasts is backed by Y Combinator's Fall 2025 (F25) batch, but no independent funding round, investor list, or valuation beyond the YC backing has been publicly confirmed as of 2026-07-01.

What does Coasts actually do?

Coasts is a Rust based CLI with a React/Vite web UI and local daemon that gives each git worktree its own isolated runtime (ports, network, services), letting multiple AI coding agents run in parallel on one machine without conflicts, per its GitHub repo dated 2026-04-27.

YC Fall 2025 · United States

Coasts

Free CLI that isolates ports and services so parallel AI coding agents don't collide on one machine.

Losing its protection

Assessed 27 July 2026 · Evidence as of 27 July 2026

The structural protection is eroding.

On the recordSince 27 July 2026 · Checkable from H2 2026 · Every call on the record Checkpoint: Next Claude Code, Cursor, or Codex release that adds native worktree-aware port isolation

The call

Coasts fixes a real but small coordination problem that free clones already copy and that AI coding harnesses could absorb natively within months.

Coasts is a tool that stops multiple AI coding assistants from crashing into each other when they run on the same computer by managing ports and databases. The problem is real and new, but the fix is simple and cheap to build, so Claude Code, Cursor, and other AI coding tools can add it themselves whenever they want. Nothing stops them from doing it, and Coasts has no special way to reach customers, no clear way to make money, or anything that would lock customers in, so it will likely become just a small feature inside bigger products rather than survive as its own company.

Why

AI pressure: Claude Code, Cursor, OpenAI Codex. These harnesses already treat git worktrees as the parallel-agent pattern, so native port isolation is a small step for them to add. Could AI do the core job? Yes, likely.

Bigger players: GitHub Codespaces, Gitpod. Both sell hosted cloud compute, so a tool that keeps everything on localhost doesn't fit their revenue model. Could a giant copy it? Yes, easily.

What protects it. Coasts stays useful only by staying free, open source, and compatible with every harness instead of competing with them.

What would change this call

Claude Code, Cursor, or Codex ships native worktree-aware port isolation within 6 months. Would confirm the harness vendors absorb the feature, eliminating Coasts's reason to exist.
galactic or wt GitHub star count keeps rising faster than Coasts adoption metrics. Would show free clones, not Coasts, are winning the niche.
Coasts announces a paid tier or independent seed round within a year. Would test whether Coasts can monetize or attract investor conviction as a standalone company.

Key numbers

Free clone galactic has 214 GitHub stars (2026-05-29)
No revenue or customer data publicly disclosed (2026-07-01)
Zero job postings listed on YC platform (2026-07-01)

Named risks

AI harness vendors (Claude Code, Cursor, Codex) could ship native worktree/port isolation, erasing Coasts' reason to exist. Severity: high
Multiple free OSS clones (galactic, wt) already solve the identical problem as of mid-2026. Severity: high
No monetization model exists; product explicitly pledges 'no AI upsells' as of 2026. Severity: medium
No independent funding beyond YC F25 batch confirmed as of 2026-07-01. Severity: medium
No job postings or visible headcount growth as of 2026-07-01, suggesting stalled hiring momentum. Severity: low

Rivals, as read in July 2026

Rival	Direction	Evidence
galactic (OSS worktree orchestrator)	contesting	free clone with 214 GitHub stars as of 2026-05-29
Claude Code, Cursor, Codex (AI harness vendors)	losing to	already support git worktrees natively as of 2026-04-27, low cost to add isolation
Daytona	gaining on	raised $24M Series A Feb 2026, pivoted to AI-agent sandbox infra, went closed source June 2026
wt (lightweight git worktree orchestrator)	contesting	free Show HN alternative solving same parallel-agent worktree problem in 2026

Questions people ask

Is Coasts profitable in 2026?: No. Coasts is a free, open source CLI with no disclosed revenue, customers, or pricing tier as of 2026-07-01. Its own site markets it as 'Free, OSS, no AI upsells,' meaning there is currently no monetization model at all.
Could AI coding tools like Claude Code or Cursor replace Coasts?: Very plausibly. As of 2026-04-27, Claude Code, Cursor, Codex, and Conductor already support git worktrees natively, and analysts flag that these harness vendors face zero cost to add native port/service isolation, which is Coasts' entire value proposition.
Who founded Coasts and is it a first-time founder?: Coasts was founded by Jamie Sunderland, a second-time YC founder who previously started Cheqout (YC W21), per the YC company profile as of the company's Fall 2025 batch listing.
Who is Coasts' biggest competitor?: Free OSS clones already exist, notably 'galactic,' which had 214 GitHub stars as of 2026-05-29, plus tools like 'wt.' The bigger threat is the AI harness vendors themselves (Claude Code, Cursor, Codex) absorbing the feature natively.
Has Coasts raised venture funding?: Coasts is backed by Y Combinator's Fall 2025 (F25) batch, but no independent funding round, investor list, or valuation beyond the YC backing has been publicly confirmed as of 2026-07-01.
What does Coasts actually do?: Coasts is a Rust based CLI with a React/Vite web UI and local daemon that gives each git worktree its own isolated runtime (ports, network, services), letting multiple AI coding agents run in parallel on one machine without conflicts, per its GitHub repo dated 2026-04-27.

Timeline

2026-07-01No revenue, customers, job postings, or independent funding publicly disclosed for Coasts
2026-06-11Adjacent competitor Daytona moves its production codebase closed source
2026-05-29Free OSS rival 'galactic' reaches 214 GitHub stars
2026-04-27Coasts GitHub repo details Rust CLI, React/Vite UI, docker-compose/Coastfile setup
2026-02-06Adjacent competitor Daytona raises $24M Series A led by FirstMark Capital
2026-01-28YC F25 batch listing published, placing Coasts in Fall 2025 cohort context
2025-12-01Coasts confirmed as part of Y Combinator Fall 2025 (F25) batch

Revision history

27 July 2026

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

In the same band

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