One

What is One?

One is a connection layer for AI agents. You connect an app such as Gmail, Slack, Stripe or Linear once, inside an account you own, and then point any agent at it. Each agent receives a scoped grant instead of your credentials, so you decide per agent, per app and per action what it may do, and revoke access in one click. A call outside the grant is rejected with a 403, and every action is written to an audit trail. One covers 1,035+ platforms and a large library of tested actions, and it reaches agents through a single remote MCP server or a CLI, which keeps tool descriptions small in the model's context. Developers can also add its Connect flow to their own products at no charge. Plans are Free, Starter at $29/mo, Pro at $199/mo and a custom Enterprise tier, and each includes 1M requests per month, with extra requests available at $20 per million.

Use cases

• Give AI agents scoped access to apps
• Revoke an agent's access in one click
• Audit what each agent did
• Add app connections to your own product
• Use one MCP server across many apps
• Run an agent on a dedicated cloud server

Who it's for

• AI agent developers
• Engineering teams
• Startups
• Security and IT teams

Why use One

• Agents receive a grant rather than your credentials, so they never hold your passwords or keys.
• Connect an app once and reuse the connection across every agent you use.
• Scope enforcement happens at runtime, so a write against a read-only grant never reaches the provider.
• The audit trail shows which agent called which action and what came back.
• Paid plans change limits rather than features, so the Free plan includes every platform.

One features

• Managed auth including OAuth and API keys
• Scoped grants per agent, app and action
• Audit trail of every agent action
• 1,035+ connected platforms
• Single universal MCP server
• CLI access
• Connect flow to embed in your own product
• Webhooks and Relay
• Cloud agents on dedicated servers
• Open source knowledge base of tested actions
• Dashboard of agents, apps and actions

One integrations

• Claude Code
• Cursor
• Codex
• GitHub Copilot
• Windsurf
• Cline
• LangChain
• LangGraph
• CrewAI
• Vercel AI SDK
• Gmail
• Slack
• Stripe
• Linear
• GitHub
• HubSpot

How to get started with One

1. Sign up and connect your first app in your own One account.
2. Choose what each agent may read or write for that app.
3. Add One to your agent through the remote MCP server or the CLI.
4. Agents call actions through the connection and One attaches credentials at call time.
5. Review the dashboard and audit trail, and revoke any agent when needed.

One limitations

• Free plan allows 20 requests per minute, one project and 7 days of log retention
• Requests past the included 1M per month cost extra
• Cloud agents are an add-on billed separately per agent
• The vendor says its SOC 2 audit is in progress

One pricing

Yes, One has a free plan. Paid plans start at $29 per month, according to the official pricing page on 24 Oct 2026.

One plans

• Free

  $0

  • 1M requests per month
  • 20 requests per minute
  • 1 organization and 1 project
  • 7 days of log retention
  • Community support

• Starter

  $29/mo

  • 1M requests per month
  • 100 requests per minute
  • Up to 5 team invites
  • 30 days of log retention
  • Community support

• Pro

  $199/mo

  • 1M requests per month, then metered
  • 500 requests per minute
  • 5 organizations and 10 projects
  • Up to 20 team invites
  • 60 days of log retention
  • Priority email support

• Enterprise

  Custom

  • Custom requests and limits
  • Custom log retention
  • Dedicated Slack and an SLA

Plans as listed on the official pricing page on 24 Oct 2026. Prices can change and may vary by country or exclude tax. Check the official pricing page.

One alternatives

The main One alternatives listed on Debuly are Composio, Arcade, Pipedream, Zapier, Artific and Context. The table compares pricing and platforms; order is A–Z.

1. 

   Arcade

   Actions runtime that lets AI agents call tools in Gmail, Slack, Salesforce and more under each user's own permissions.

   Developer platformsAutomation and agents
   FreemiumVisit Arcade (official site)
2. 

   Artific

   EU-hosted AI platform for building company AI assistants, a self-service toolbox and AI-drafted email replies with IT guardrails.

   Automation and agentsChat assistantsDeveloper platforms
   Visit Artific (official site)
3. 

   Composio

   Developer platform with SDKs, CLI and MCP that gives AI agents 1000+ pre-authenticated app toolkits and per-user sessions.

   Developer platformsAutomation and agents
   Visit Composio (official site)
4. 

   Context

   Workspace and runtime for AI agents that run in your own cloud, with shared files, chat, evals and per-agent identity.

   Automation and agentsDeveloper platformsProductivity
   FreemiumVisit Context (official site)
5. 

   Pipedream

   Integration layer for AI agents and apps, with managed auth for 3,000+ APIs, prebuilt tools, triggers and MCP servers via Pipedream Connect.

   Developer platformsAutomation and agents
   FreemiumVisit Pipedream (official site)
6. 

   Zapier

   No-code automation platform that links 9,000+ apps through multi-step Zaps, AI agents, tables, forms and an MCP server.

   Automation and agentsProductivity
   FreemiumVisit Zapier (official site)

One FAQ

Sources & verification

Facts on this page come from the official sources below, each with the date we read it. Written by Debuly; the vendor did not review this page.

Image credits

• Logo: from withone.ai · fetched 24 Oct 2026 · Vendor trademark, used only to identify the product; removed on request
• Cover: none collected yet, so a generated tile is shown.

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