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Coasty

Name: Coasty
Price: 0.05 USD
Author: 9bests.com

A computer-use agent API that drives legacy desktop and web apps through screenshots, mouse and keyboard — no API integration needed — so you can automate workflows inside software that has no usable API.

★★★⯨☆ 3.5 Usage-based: ~$0.05 per /v1/predict call on the marketing page, with self-serve plans Starter $19/mo, Plus $50/mo, Unlimited $99/mo; founders also describe runtime/volume billing for dedicated/enterprise environments (exact pricing not fully nailed down across sources).

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📖 Editorial Review Snapshot Reviewed Sep 20, 2026

🕒 Temporal Notice: This article reflects our editorial evaluation snapshot on Sep 20, 2026. Live specifications and pricing are maintained separately in the Registry and reflect current facts.

Coasty Review 2026: An API That Lets Agents Click Through Software With No API

In-depth review of Coasty — a YC S26 computer-use agent API that drives legacy desktop and web apps through screenshots, mouse and keyboard, so you can automate workflows inside software that has no usable API.

Read the full long-form review & analysis →

💡 9bests Editorial Buying Advice

Why choose Coasty: A computer-use agent API that drives legacy desktop and web apps through screenshots, mouse and keyboard — no API integration needed — so you can automate workflows inside software that has no usable API.

Optimal workflow match: Workflow fit varies by team and should be verified.

✅ Pros / Key Advantages

• Genuine, differentiated wedge: vision-based computer use that works on legacy/black-box apps with no API, no DOM, no per-app integration.
• Developer-friendly surface: a single REST endpoint plus an MCP server, so it drops into existing agent and CI workflows.
• Strong reliability story for sensitive workflows: invariant checks, human-approval gates, isolated VMs, and a full replay/audit log.
• YC S26 backing and a real, shippable product with published pricing and a 1,000+ integration layer.
• Credible benchmark positioning (OSWorld ~85%) and a sensible land-and-expand vertical (healthcare ops) where mistakes are costly.

❌ Cons / Limitations

• Closed-source / proprietary with no public GitHub repository — no LICENSE to inspect and an enterprise-adoption hard gate for teams that require open-source or source access.
• Benchmark is self-reported (85.60% claimed; an independent source cites ~82.81%), so real-world reliability on your own apps is unverified until you test.
• Very early stage (YC S26): young company, and the Launch HN drew only ~35 points — modest external traction signal so far.
• Pricing is described two ways (per-/v1/predict at ~$0.05 and 'runtime/volume' billing), so the exact cost model for production workloads is unclear.
• Narrow early focus on healthcare ops; fit and support for other verticals is less demonstrated.

💰 Pricing Plans & Structure

Usage-based: ~$0.05 per /v1/predict call on the marketing page, with self-serve plans Starter $19/mo, Plus $50/mo, Unlimited $99/mo; founders also describe runtime/volume billing for dedicated/enterprise environments (exact pricing not fully nailed down across sources).

Pricing details are gathered from public sources and are subject to change. Please visit the official website for real-time rates and trial terms.

Pricing verified from official public sources · Reviewed by Bill (Lead Editor)

🎯 Who should use Coasty

Best suited for users focused on digital productivity and AI automation who value genuine, differentiated wedge: vision-based computer use that works on legacy/black-box apps with no api, no dom, no per-app integration..

⚠️ Who should look elsewhere

Users who require features outside its core scope or cannot accommodate closed-source / proprietary with no public github repository — no license to inspect and an enterprise-adoption hard gate for teams that require open-source or source access. may benefit from exploring alternative tools in this category.

🚀 Common use cases

Genuine, differentiated wedge: vision-based computer use that works on legacy/black-box apps with no API, no DOM, no per-app integration.

Developer-friendly surface: a single REST endpoint plus an MCP server, so it drops into existing agent and CI workflows.

Strong reliability story for sensitive workflows: invariant checks, human-approval gates, isolated VMs, and a full replay/audit log.

⚖️ Direct Head-to-Head Comparisons

Curated Matchups

Compare Matrix → Usage-based: ~$0.05 per /v1/predict call on the marketing page, with self-serve plans Starter $19/mo, Plus $50/mo, Unlimited $99/mo; founders also describe runtime/volume billing for dedicated/enterprise environments (exact pricing not fully nailed down across sources). vs Free / $20/mo

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❓ Frequently asked questions

Is Coasty free?

Coasty is paid; pricing: Usage-based: ~$0.05 per /v1/predict call on the marketing page, with self-serve plans Starter $19/mo, Plus $50/mo, Unlimited $99/mo; founders also describe runtime/volume billing for dedicated/enterprise environments (exact pricing not fully nailed down across sources)..

What is Coasty used for and what are its strengths?

Key strengths of Coasty: Genuine, differentiated wedge: vision-based computer use that works on legacy/black-box apps with no API, no DOM, no per-app integration., Developer-friendly surface: a single REST endpoint plus an MCP server, so it drops into existing agent and CI workflows.. A computer-use agent API that drives legacy desktop and web apps through screenshots, mouse and keyboard — no API integration needed — so you can automate workflows inside software that has no usable API.

What is the best alternative to Coasty?

If you're looking for an alternative to Coasty, consider Cursor: it stands out for State-of-the-art multi-file Composer & Cloud Agents, Deep codebase-wide semantic indexing.

How do I choose the right alternative to Coasty?

Selection advice: compare ratings, pricing, and core features within the AI Coding category, then match to your own workflow. See the comparison matrix and Top alternatives list on this page.