Aside

Aside is an AI-powered browser from a Y Combinator (Fall 2025) startup that runs an autonomous browser agent to complete real work across the logged-in websites you already use — email, dashboards, internal tools, documents, and spreadsheets — without relying on per-service API integrations. It pairs browsing history used as local memory with the first password manager designed for AI agents (hardware-backed encryption, audit logging), keeps data local-first and end-to-end encrypted, and gates sensitive actions like payments and messages behind human approval. For developers, Aside ships a command-line interface, a Model Context Protocol (MCP) server, and a browser-automation REPL so other agents and coding tools can drive the browser, plus bring-your-own-key support for OpenAI and Anthropic models.

Aside is profiled on the APIs.io network. Tagged areas include Company, AI Browser, Browser Agent, Automation, and Model Context Protocol.

Aside’s developer surface includes documentation, getting-started guide, support, engineering blog, pricing, changelog, CLI, and 8 more developer resources.

🌐 Visit website 📡 Source on GitHub

23.4/100 emerging ▬ flat Agent 12/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5

0 APIs 1 MCP Servers

CompanyAI BrowserBrowser AgentAutomationModel Context ProtocolMCPCLIPassword ManagerAgenticWeb AutomationDeveloper ToolsY Combinator

Kin Score

Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5

Composite quality — 23.4/100 · emerging

Contract Quality 0.0 / 25

Developer Ergonomics 8.3 / 20

Commercial Clarity 6.3 / 20

Operational Transparency 2.1 / 13

Governance 0.0 / 12

Discoverability 6.8 / 10

Agent readiness — 12/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 15

MCP Server 12 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 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/aside: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

MCP Servers 1

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

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

MCPServer

MCPServer

LLMsTxt

LLMsTxt

Build 2

SDKs, sample code, and the tooling you integrate with

CLI

CLI

Packages

Packages

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 3

Status, limits, changes, and where to get help

Support

Support

ChangeLog

ChangeLog

ChangeLog

ChangeLog

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Source (apis.yml)

aid: aside
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/aside.png
name: Aside
description: Aside is an AI-powered browser from a Y Combinator (Fall 2025) startup that runs an autonomous browser agent
  to complete real work across the logged-in websites you already use — email, dashboards, internal tools, documents, and
  spreadsheets — without relying on per-service API integrations. It pairs browsing history used as local memory with the
  first password manager designed for AI agents (hardware-backed encryption, audit logging), keeps data local-first and end-to-end
  encrypted, and gates sensitive actions like payments and messages behind human approval. For developers, Aside ships a command-line
  interface, a Model Context Protocol (MCP) server, and a browser-automation REPL so other agents and coding tools can drive
  the browser, plus bring-your-own-key support for OpenAI and Anthropic models.
url: https://raw.githubusercontent.com/api-evangelist/aside/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- y-combinator
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-18'
tags:
- Company
- AI Browser
- Browser Agent
- Automation
- Model Context Protocol
- MCP
- CLI
- Password Manager
- Agentic
- Web Automation
- Developer Tools
- Y Combinator
apis: []
common:
- type: DomainSecurity
  url: security/aside-domain-security.yml
- type: Website
  url: https://aside.com
- type: Documentation
  url: https://docs.aside.com
- type: GettingStarted
  url: https://docs.aside.com/help/get-started
- type: Support
  url: https://aside.com/community
- type: Blog
  url: https://aside.com/blog
- type: Pricing
  url: https://aside.com/pricing
- type: TermsOfService
  url: https://aside.com/policy/terms
- type: PrivacyPolicy
  url: https://aside.com/policy/privacy
- type: ChangeLog
  url: https://docs.aside.com/changelog/native
- type: ChangeLog
  name: Aside changelog (structured)
  url: changelog/aside-changelog.yml
- type: MCPServer
  name: Aside MCP server
  url: mcp/aside-mcp.yml
- type: CLI
  name: Aside CLI
  url: cli/aside-cli.yml
- type: Packages
  name: Aside packages
  url: packages/aside-packages.yml
- type: LLMsTxt
  url: llms/aside-llms.txt
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