Coasty

Coasty is a computer-use AI agent platform (Y Combinator S26) that operates a full desktop, browser, and terminal like a human — reading the screen with vision, clicking, typing, filling forms, running commands, and verifying its own work across sandboxed virtual machines. It exposes a public REST API at coasty.ai/v1 with a published OpenAPI 3.1 spec (72 operations), a first-party MCP server (npx @coasty/mcp, 26 tools), free sandbox keys, HMAC-SHA256 webhook triggers, an Idempotency-Key contract, per-credit metered billing, and 1,000+ OAuth app integrations via Composio. Core API surfaces are Predict, Sessions, Ground, Parse, Machines, Schedules, Runs, and Workflows. Founded 2025-2026 by Prateek Jannu and Nitish Kovuru; #1 on the OSWorld benchmark among production computer-use agents.

Coasty publishes 8 APIs on the APIs.io network, including keys API, machines API, predict API, and 5 more. Tagged areas include Company, Computer Use, AI Agents, Automation, and RPA.

The Coasty catalog on APIs.io includes 1 event-driven AsyncAPI specification.

Coasty’s developer surface includes authentication, documentation, API reference, getting-started guide, engineering blog, pricing, signup flow, and 30 more developer resources.

🌐 Visit website 📡 Source on GitHub
63.1/100 strong ▬ flat Agent 93/100 agent native Full breakdown ↓
scored 2026-07-23 · rubric v0.5
AccessPaidSelf serve
8 APIs 1 MCP Servers
CompanyComputer UseAI AgentsAutomationRPADesktop AutomationBrowser AutomationMCPVirtual MachinesDeveloper Tools

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-23 · rubric v0.5
Composite quality — 63.1/100 · strong
Contract Quality 16.9 / 25
Developer Ergonomics 14.8 / 20
Commercial Clarity 15.3 / 20
Operational Transparency 6.2 / 13
Governance 0.0 / 12
Discoverability 10.0 / 10
Agent readiness — 93/100 · agent native
Machine-Readable Contract 18 / 18
Agentic Access Contract 15 / 15
MCP Server 12 / 12
Machine-Readable Auth 10 / 10
Idempotency 9 / 9
Stable Error Semantics 8 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 6 / 6
Agent Skills 5 / 5
Well-Known Catalog 4 / 4
Consent & Bot Identity 3 / 3
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/coasty: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 8

Individual APIs this provider publishes, each with its own machine-readable definition.

Coasty keys API

API key management and usage reporting.

Coasty machines API

Provision and control managed VMs.

Coasty predict API

Stateless CUA action prediction and grounding.

Coasty runs API

Autonomous task runs — the agent drives a task to completion on a machine.

Coasty schedules API

Cron and one-shot scheduled CUA jobs.

Coasty sessions API

Stateful CUA sessions with persistent trajectory.

Coasty triggers API

Webhook and chain triggers for schedules.

Coasty workflows API

Versioned, branching multi-step automations (DSL) and their runs.

Scroll for all 8

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

Coasty Computer-Use MCP Server

First-party MCP server (npx -y @coasty/mcp; remote https://api.coasty.ai/mcp) exposing 26 computer-use tools across predict, machines, schedules, account, and discovery groups.

MCP SERVER

Pricing Plans 1

Published pricing tiers and plan structures.

Coasty Plans

4 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Coasty Rate Limits

0 limits

RATE LIMITS

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Coasty Webhooks

ASYNCAPI

Security Posture 3

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Coasty Authentication

apiKey/http · 4 schemes

SECURITY

Coasty Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Coasty Vulnerability Disclosure

security.txt · contact published

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Coasty Agentic Access

72 operations · 42 acting · 5 human-in-the-loop

72 operations · 42 acting

AGENTIC

Resources

Get Started 4

Portal, sign-up, and the first successful call

DeveloperPortal
DeveloperPortal
 GettingStarted
GettingStarted
 SignUp
SignUp
 Sandbox
Sandbox

Documentation 3

Reference material describing how the API behaves

Documentation
Documentation
 APIReference
APIReference
 OpenAPI
OpenAPI

Agent Surfaces 5

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess
 LLMsTxt
LLMsTxt
 WellKnown
WellKnown
 MCPServer
MCPServer
 AgentSkill
AgentSkill

Design & Contract 7

Pagination, idempotency, versioning, errors, and events

Conventions
Conventions
 Idempotency
Idempotency
 ErrorCatalog
ErrorCatalog
 Conformance
Conformance
 Lifecycle
Lifecycle
 DataModel
DataModel
 Webhooks
Webhooks

Scroll for all 7

Build 2

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization
 Packages
Packages

Access & Security 5

Authentication, authorization, and security posture

VulnerabilityDisclosure
VulnerabilityDisclosure
 Security
Security
 DomainSecurity
DomainSecurity
 Authentication
Authentication
 SecurityTxt
SecurityTxt

Operate 4

Status, limits, changes, and where to get help

Support
Support
 StatusPage
StatusPage
 Deprecation
Deprecation
 RateLimits
RateLimits

Commercial 4

Pricing, plans, and the legal terms of use

Pricing
Pricing
 TermsOfService
TermsOfService
 PrivacyPolicy
PrivacyPolicy
 Plans
Plans

Company 2

The organization behind the API

Website
Website
 Blog
Blog

Other 1

Properties that don't map to a standard resource type

Overlay
Overlay

Source (apis.yml)

apis.yml Raw ↑ 
aid: coasty
name: Coasty
description: 'Coasty is a computer-use AI agent platform (Y Combinator S26) that operates a full desktop, browser, and terminal
  like a human — reading the screen with vision, clicking, typing, filling forms, running commands, and verifying its own
  work across sandboxed virtual machines. It exposes a public REST API at coasty.ai/v1 with a published OpenAPI 3.1 spec (72
  operations), a first-party MCP server (npx @coasty/mcp, 26 tools), free sandbox keys, HMAC-SHA256 webhook triggers, an Idempotency-Key
  contract, per-credit metered billing, and 1,000+ OAuth app integrations via Composio. Core API surfaces are Predict, Sessions,
  Ground, Parse, Machines, Schedules, Runs, and Workflows. Founded 2025-2026 by Prateek Jannu and Nitish Kovuru; #1 on the
  OSWorld benchmark among production computer-use agents.'
url: https://raw.githubusercontent.com/api-evangelist/coasty/refs/heads/main/apis.yml
accessModel:
  pricing: paid
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Paid · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://coasty.ai/icon-512.svg
x-type: company
x-source: vc-portfolio
x-backed-by:
- y-combinator
x-tier: profiled
x-tier-reason: enrichment-pipeline
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-18'
tags:
- Company
- Computer Use
- AI Agents
- Automation
- RPA
- Desktop Automation
- Browser Automation
- MCP
- Virtual Machines
- Developer Tools
apis:
- aid: coasty:coasty-keys-api
  name: Coasty keys API
  description: API key management and usage reporting.
  humanURL: https://coasty.ai/docs
  baseURL: https://coasty.ai
  tags:
  - keys
  properties:
  - type: OpenAPI
    url: openapi/coasty-keys-api-openapi.yml
  - type: Documentation
    url: https://coasty.ai/docs
  - type: APIReference
    url: https://coasty.ai/api-docs
  - type: GettingStarted
    url: https://coasty.ai/guide?tab=api
- aid: coasty:coasty-machines-api
  name: Coasty machines API
  description: Provision and control managed VMs.
  humanURL: https://coasty.ai/docs
  baseURL: https://coasty.ai
  tags:
  - machines
  properties:
  - type: OpenAPI
    url: openapi/coasty-machines-api-openapi.yml
  - type: Documentation
    url: https://coasty.ai/docs
  - type: APIReference
    url: https://coasty.ai/api-docs
  - type: GettingStarted
    url: https://coasty.ai/guide?tab=api
- aid: coasty:coasty-predict-api
  name: Coasty predict API
  description: Stateless CUA action prediction and grounding.
  humanURL: https://coasty.ai/docs
  baseURL: https://coasty.ai
  tags:
  - predict
  properties:
  - type: OpenAPI
    url: openapi/coasty-predict-api-openapi.yml
  - type: Documentation
    url: https://coasty.ai/docs
  - type: APIReference
    url: https://coasty.ai/api-docs
  - type: GettingStarted
    url: https://coasty.ai/guide?tab=api
- aid: coasty:coasty-runs-api
  name: Coasty runs API
  description: Autonomous task runs — the agent drives a task to completion on a machine.
  humanURL: https://coasty.ai/docs
  baseURL: https://coasty.ai
  tags:
  - runs
  properties:
  - type: OpenAPI
    url: openapi/coasty-runs-api-openapi.yml
  - type: Documentation
    url: https://coasty.ai/docs
  - type: APIReference
    url: https://coasty.ai/api-docs
  - type: GettingStarted
    url: https://coasty.ai/guide?tab=api
- aid: coasty:coasty-schedules-api
  name: Coasty schedules API
  description: Cron and one-shot scheduled CUA jobs.
  humanURL: https://coasty.ai/docs
  baseURL: https://coasty.ai
  tags:
  - schedules
  properties:
  - type: OpenAPI
    url: openapi/coasty-schedules-api-openapi.yml
  - type: Documentation
    url: https://coasty.ai/docs
  - type: APIReference
    url: https://coasty.ai/api-docs
  - type: GettingStarted
    url: https://coasty.ai/guide?tab=api
- aid: coasty:coasty-sessions-api
  name: Coasty sessions API
  description: Stateful CUA sessions with persistent trajectory.
  humanURL: https://coasty.ai/docs
  baseURL: https://coasty.ai
  tags:
  - sessions
  properties:
  - type: OpenAPI
    url: openapi/coasty-sessions-api-openapi.yml
  - type: Documentation
    url: https://coasty.ai/docs
  - type: APIReference
    url: https://coasty.ai/api-docs
  - type: GettingStarted
    url: https://coasty.ai/guide?tab=api
- aid: coasty:coasty-triggers-api
  name: Coasty triggers API
  description: Webhook and chain triggers for schedules.
  humanURL: https://coasty.ai/docs
  baseURL: https://coasty.ai
  tags:
  - triggers
  properties:
  - type: OpenAPI
    url: openapi/coasty-triggers-api-openapi.yml
  - type: Documentation
    url: https://coasty.ai/docs
  - type: APIReference
    url: https://coasty.ai/api-docs
  - type: GettingStarted
    url: https://coasty.ai/guide?tab=api
- aid: coasty:coasty-workflows-api
  name: Coasty workflows API
  description: Versioned, branching multi-step automations (DSL) and their runs.
  humanURL: https://coasty.ai/docs
  baseURL: https://coasty.ai
  tags:
  - workflows
  properties:
  - type: OpenAPI
    url: openapi/coasty-workflows-api-openapi.yml
  - type: Documentation
    url: https://coasty.ai/docs
  - type: APIReference
    url: https://coasty.ai/api-docs
  - type: GettingStarted
    url: https://coasty.ai/guide?tab=api
common:
- type: VulnerabilityDisclosure
  url: security/coasty-vulnerability-disclosure.yml
- type: Security
  url: https://coasty.ai/.well-known/security.txt
- type: DomainSecurity
  url: security/coasty-domain-security.yml
- type: AgenticAccess
  url: agentic-access/coasty-agentic-access.yml
- type: Authentication
  url: authentication/coasty-authentication.yml
- type: Website
  url: https://coasty.ai
- type: DeveloperPortal
  url: https://coasty.ai/docs
- type: Documentation
  url: https://coasty.ai/docs
- type: APIReference
  url: https://coasty.ai/api-docs
- type: GettingStarted
  url: https://coasty.ai/guide?tab=api
- type: Blog
  url: https://coasty.ai/blog
- type: Pricing
  url: https://coasty.ai/pricing
- type: SignUp
  url: https://coasty.ai/auth
- type: TermsOfService
  url: https://coasty.ai/terms
- type: PrivacyPolicy
  url: https://coasty.ai/privacy
- type: Support
  url: mailto:founders@coasty.ai
- type: GitHubOrganization
  url: https://github.com/coasty-ai
- type: StatusPage
  url: https://status.coasty.ai
- type: OpenAPI
  url: openapi/coasty-openapi-original.json
- type: Overlay
  url: overlays/coasty-openapi-overlay.yaml
- type: LLMsTxt
  url: llms/coasty-llms.txt
- type: WellKnown
  url: well-known/coasty-well-known.yml
- type: SecurityTxt
  url: well-known/coasty-security.txt
- type: MCPServer
  url: mcp/coasty-mcp.yml
  name: Coasty Computer-Use MCP Server
  description: First-party MCP server (npx -y @coasty/mcp; remote https://api.coasty.ai/mcp) exposing 26 computer-use tools
    across predict, machines, schedules, account, and discovery groups.
- type: Packages
  url: packages/coasty-packages.yml
- type: Conventions
  url: conventions/coasty-conventions.yml
- type: Idempotency
  url: conventions/coasty-conventions.yml
- type: ErrorCatalog
  url: errors/coasty-problem-types.yml
- type: Conformance
  url: conformance/coasty-conformance.yml
- type: Lifecycle
  url: lifecycle/coasty-lifecycle.yml
- type: Deprecation
  url: lifecycle/coasty-lifecycle.yml
- type: Sandbox
  url: sandbox/coasty-sandbox.yml
- type: DataModel
  url: data-model/coasty-data-model.yml
- type: Webhooks
  url: asyncapi/coasty-webhooks.yml
- type: Plans
  url: plans/coasty-plans.yml
- type: RateLimits
  url: rate-limits/coasty-rate-limits.yml
- type: AgentSkill
  url: skills/_index.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence