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.
Solid contracts, transparent operations, and an easy start — typically complete on four or five facets with one clear soft spot.
API Evangelist profiles Coasty the way a machine reads it — 16 machine-readable artifacts across 8 APIs, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — Coasty scores 63.1/100 (strong), with a separate agent-readiness read of 93/100 (agent native). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance.
Kin Score
How this is scored →scored 2026-07-27 · rubric v0.5
How we profile Coasty
Each block below is one kind of artifact we hold for Coasty. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.
APIs 8
Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.
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 within the panel for all 8 ·
MCP Servers 1
Model Context Protocol servers expose these APIs directly to AI agents. We profile them because agent-native access is the fastest-growing way this provider's capabilities actually get used.
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 SERVERPricing Plans 1
Pricing is part of the interface. Machine-readable plans tell you what a tier costs and includes before you commit — one of the six things the Kin Score reads for commercial clarity.
Published pricing tiers and plan structures.
Coasty Plans
PLANSRate Limits 1
Rate limits are the difference between a demo that works and a production integration that doesn't fall over. Publishing them is an operational-transparency signal — and a hard requirement for any agent that plans its own throughput.
Documented rate limits and quota policies.
Coasty Rate Limits
RATE LIMITSEvent Specifications 1
Not every API is request/response. AsyncAPI describes the event-driven and streaming side — the webhooks and channels — so the asynchronous half of the interface is documented the same way the synchronous half is.
AsyncAPI definitions for this provider's event-driven and streaming APIs.
Coasty Webhooks
ASYNCAPISecurity Posture 3
Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Agentic Access 1
An x-agentic-access contract marks which operations are safe for an agent to run on its own and which need a human in the loop. It is the difference between an API an agent can use and one it can use safely.
Recommended x-agentic-access execution contracts for AI agents.
Resources
Every other property we hold for Coasty — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.
Get Started 4
Portal, sign-up, and the first successful call
Documentation 3
Reference material describing how the API behaves
Agent Surfaces 5
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 7
Pagination, idempotency, versioning, errors, and events
Scroll within the panel for all 7 ·
Build 2
SDKs, sample code, and the tooling you integrate with
Access & Security 5
Authentication, authorization, and security posture
Operate 4
Status, limits, changes, and where to get help
Commercial 4
Pricing, plans, and the legal terms of use
Company 2
The organization behind the API
Other 1
Properties that don't map to a standard resource type
← All providers · Data indexed from github.com/api-evangelist/coasty · machine-readable index on apis.io