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Nous Research Releases Hermes Agent v0.23.0 With Browser Desktop App and Spend Limits for Paid Tools

November 6, 2026 at 17:54 EST

AI Agents

Nous Research has released version 0.23.0 of its Hermes Agent, codenamed "Hearth," adding a browser-based desktop web app, unified multi-gateway sessions, and pricing and spending controls for paid tools built on the Model Context Protocol (MCP).

Nous Research · Hermes Agent 0.23.0 "Hearth"

Hermes Agent adds a browser desktop app, unified sessions, and spend controls for paid tools

The release brings a browser-based desktop web app, sessions that span multiple gateways, and per-tool prices with spend limits for paid Model Context Protocol (MCP) tools. The plugin catalog also grew substantially.

1,050+

plugins in the catalog, up from 600

1.75×

growth in catalog size (600 to over 1,050)

headline additions: web desktop app, unified sessions, paid-tool spend controls

Plugin catalog growth, drawn to scale

Each block = 50 plugins. Column height is proportional to the count.

600

1,050+

Version 0.23.0

Growth of roughly 75%, shown as 12 blocks versus 21 blocks.

What the update adds

A desktop web app that runs in the browser, with no local install needed
Sessions consolidated across gateways to keep agent work continuous
Per-tool price tags and spend limits for paid MCP tools

What remains unconfirmed

How spend limits are enforced
How tool pricing is sourced
Which tools support pricing and caps
Independent tests of reliability, security, and cost controls

Why spend limits matter

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