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Mercury Agent

Open-source, self-hosted AI agent that asks before it acts, remembers your work and runs from terminal or chat apps.

Open source

What is Mercury Agent?

Mercury Agent is an MIT-licensed AI agent that runs on your own machine and works with many model providers. It has about 50 built-in tools, each gated by permissions: reads run freely, while writes, shell commands and pushes wait for your approval, and some dangerous commands are blocked in every mode. A local memory store keeps preferences, people and decisions so later sessions start with context, and a background daemon can run scheduled routines and persistent bots. Mercury Code is a repo-aware coding mode that only reports a task as complete after a build, typecheck or test has run. You can reach the agent from the terminal, a browser, Telegram, Discord, Slack or Signal. The agent itself is free to self-host. Mercury Cloud, an optional hosted dashboard for pairing and monitoring your local agent, has a Free plan at $0 per month and paid Pro at $19/month and Extended at $49/month.

Use cases

  • Automate coding tasks in a repository
  • Schedule recurring routines and daily briefs
  • Run persistent specialist bots
  • Approve agent actions from a web dashboard
  • Chat with a memory-aware assistant on Telegram or Slack
  • Track and cap daily token usage

Who it's for

  • Developers
  • Self-hosting enthusiasts
  • Power users
  • Small engineering teams

Why use Mercury Agent

  • Permission prompts keep you in control of anything that writes, runs commands or pushes code.
  • The source is MIT licensed and the agent reports no telemetry, so you can run it on your own hardware.
  • Memory is stored on your disk and carries preferences and decisions from one session to the next.
  • You can bring your own provider keys and switch models without changing tools.
  • The optional cloud dashboard adds remote chat and usage views without port forwarding.

Mercury Agent features

  • About 50 built-in tools, each gated by permissions
  • Ask Me or Allow All permission modes with a shell command blocklist
  • Local Second Brain memory built on SQLite with full-text search
  • Mercury Code mode that verifies work with a build, typecheck or test
  • Background daemon with cron schedules and a durable job queue
  • Mercury Bots with their own persona, model, memory and permissions
  • Support for 10+ model providers with automatic fallback
  • Daily token budgets with a Token Saver Mode
  • Channels for terminal, web, Telegram, Discord, Slack and Signal
  • Mercury Cloud dashboard for pairing, chat, approvals and usage

Mercury Agent integrations

  • Telegram
  • Discord
  • Slack
  • Signal
  • DeepSeek

How to get started with Mercury Agent

  1. Install the standalone binary with the install script, or install the npm package.
  2. Run mercury in a project folder, choose a model provider and pick Ask Me or Allow All mode.
  3. Give it a task; it plans, calls tools and asks for approval before risky actions.
  4. Optionally run mercury up so the agent runs as a background service with scheduled routines.
  5. Optionally run mercury cloud connect to pair the agent with the Mercury Cloud dashboard.

Mercury Agent limitations

  • Mercury Cloud Free includes 1 agent connection and 5,000 Mercury Credits per month
  • Cloud pairing needs Mercury Agent 1.2.0 or later
  • Card validation may be required to open a Mercury Cloud Free account
  • Fully managed hosting through Atomic Bot is a separate paid service

Mercury Agent pricing

Mercury Agent is open source, so you can use and self-host it for free. Paid plans start at $19 per month, according to the official pricing page on .

Mercury Agent plans

  • Free

    $0/month

    Mercury Cloud

    • Cloud account access
    • 1 agent connection
    • 5,000 Mercury Credits / month
    • Memory sync and dashboard access
  • Pro

    $19/month

    Mercury Cloud, billed monthly

    • 19,000 Mercury Credits / month
    • 5 agent connections
    • Live agent status and remote control
    • Usage analytics and billing controls
  • Extended

    $49/month

    Mercury Cloud, billed monthly

    • 49,000 Mercury Credits / month
    • 15 agent connections
    • Increased request throughput
    • Advanced memory workflows

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

Mercury Agent alternatives

The main Mercury Agent alternatives listed on Debuly are OpenClaw, Hermes Agent, goose, nanobot, Claude Code and Aider. The table compares pricing and platforms; order is A–Z.

Mercury Agent compared with its alternatives
ToolPricingStarting pricePlatforms
Mercury AgentOpen source$19/moCLI, Web, Self-hosted, Telegram
AiderOpen source—CLI, Self-hosted, Web
Claude CodePaid—macOS, Linux, Windows, Web
gooseOpen source—macOS, Linux, Windows, CLI
Hermes AgentOpen source—macOS, Windows, Linux, CLI
nanobotOpen source—Web, CLI, Self-hosted, macOS
OpenClawOpen source—macOS, Windows, Linux, iOS
  1. Aider

    Open-source AI pair programming tool that runs in your terminal and edits code in your local git repository using the LLM you choose.

  2. Claude Code

    Anthropic's coding agent that fixes bugs, writes tests and runs migrations from your terminal, IDE, desktop app, web or Slack.

  3. goose

    Open source AI agent that runs on your machine as a desktop app, CLI or API and connects to tools through MCP extensions.

  4. Hermes Agent

    Free, MIT-licensed AI agent from Nous Research with persistent memory, auto-built skills, scheduling and chat-app access.

  5. nanobot

    Open-source, lightweight AI agent you run yourself, with a web UI, MCP tools, memory, automations and chat app channels.

  6. OpenClaw

    Open-source personal AI assistant that runs on your own devices and takes actions for you through WhatsApp, Telegram, Slack, Discord and other chat apps.

Mercury Agent FAQ

How much does Mercury Agent cost?

The agent is MIT licensed and free to self-host. Mercury Cloud is optional: Free is $0/month, Pro is $19/month and Extended is $49/month, billed monthly in USD.

Is there a free plan?

Yes. Mercury Cloud Free costs $0/month and includes 1 agent connection and 5,000 Mercury Credits per month, though card validation may be required. The local CLI is also free.

What plans does Mercury Cloud have?

Free ($0/month, 5,000 credits, 1 agent), Pro ($19/month, 19,000 credits, 5 agents) and Extended ($49/month, 49,000 credits, 15 agents). Top-up balances on paid plans never expire.

Is Mercury Agent open source?

Yes. The Mercury Agent CLI is MIT licensed and can be self-hosted, and the site states the agent sends no telemetry.

Can I use my own model keys?

Yes. Mercury Agent is provider-agnostic and the local CLI can use your own provider keys, while Cloud plans add managed access and usage controls.

What are alternatives to Mercury Agent?

Related open-source agents include OpenClaw, Hermes Agent, Goose and Nanobot.

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 mercuryagent.sh · fetched · 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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