Hermes Agent v0.21.0

1 month ago

Hermes Agent v0.21.0 is out. Your agents get names, faces, and group chats. Scheduled jobs remember what they did yesterday. And you can reach into a running subagent and change its course.

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Chapters

  1. 0:00Hermes Agent v0.21.0
  2. 0:1401 Your agents, as a team
  3. 0:16Every agent gets a name and a face
  4. 0:30Bots message each other by handle
  5. 0:45Scheduled jobs remember the last run
  6. 1:0102 Hands on the wheel
  7. 1:03Steer a subagent while it runs
  8. 1:18Every MCP server on one page
  9. 1:35The terminal picked up a command palette
  10. 1:5103 New ground
  11. 1:53The agent drives the in-app browser
  12. 2:05Six providers arrive built in
  13. 2:28New skills you can call today
  14. 2:46An injected agent cannot rewrite its own orders
  15. 3:06Hermes Agent v0.21.0
Show transcript

Hermes Agent v0.21.0

Hermes Agent
Hermes Agent
Nous Research
Hermes Agent
v0.21.0
Bot Mode ships built in, cron jobs remember, and you can steer a subagent while it runs.
Released 31 August 2026 · v0.21.0
Release v0.21.0 (tag v2026.8.31), NousResearch/hermes-agent

Hermes Agent v0.21.0 is out. Your agents get names, faces, and group chats. Scheduled jobs remember what they did yesterday. And you can reach into a running subagent and change its course.

01 Your agents, as a team

Hermes Agent
Hermes Agent
v0.21.0
01
Your agents, as a team
Release v0.21.0
Part 01

Your agents, as a team.

Every agent gets a name and a face

Hermes Agent
Hermes Agent
v0.21.0
  • Bot Mode is bundled and on by default
  • Group chats hold several bots and you
  • @-mention any bot from the composer
Release v0.21.0, Highlights
Part 01

Bot Mode is bundled into the desktop app and on by default. Every agent profile gets a name and a generated avatar face. Put several bots and yourself in one room, and at-mention any of them straight from the composer.

Bots message each other by handle

Hermes Agent
Hermes Agent
v0.21.0
  • hermes peer reaches across profiles and gateways
  • Send from the command line or inside a conversation
  • Replies land in each bot's own chat, so the exchange stays inspectable
Release v0.21.0, Highlights
Part 01

The hermes peer command lets any agent message any other by handle, across profiles and gateways. Send it from the command line or from inside a conversation. Ask your research bot to hand findings to your coding bot, and the reply comes back to you.

Scheduled jobs remember the last run

Hermes Agent
Hermes Agent
v0.21.0
  • Cron agents load and update persistent memory
  • continuity=true carries each run's output into the next
  • Monitor jobs skip the model entirely when nothing changed
Release v0.21.0, Cron and Multi-Agent
Part 01

Cron agents now load and update persistent memory like every other agent. Turn on continuity and each run's output carries into the next, so a monitor can dedupe against what it already reported. Monitor jobs skip the model when nothing changed.

02 Hands on the wheel

Hermes Agent
Hermes Agent
v0.21.0
02
Hands on the wheel
Release v0.21.0
Part 02

Hands on the wheel.

Steer a subagent while it runs

Hermes Agent
Hermes Agent
v0.21.0
  • List the children that are running right now
  • Send one a course correction mid-flight
  • Stop one early and keep the partial result
  • New defaults: 250 iterations, 10 concurrent children
Release v0.21.0, Cron and Multi-Agent
Part 02

Delegation gained live orchestration. List the children that are running, send one a course correction mid-flight, or stop it early and keep the partial result. The defaults rose to 250 iterations and 10 concurrent children.

Every MCP server on one page

Hermes Agent
Hermes Agent
v0.21.0
  • Servers and catalog merged, drag anything in to import it
  • Health checks nudge you to sign in again before a call fails
  • Schema token estimates and 30 days of usage, per server
  • hermes:// links install a server after you confirm
Release v0.21.0, Tool System and MCP
Part 02

MCP servers and the catalog merged into one desktop page, and you can drag anything in to import it. Health checks nudge you to sign in again before a tool call fails, and an overlay shows schema token estimates and thirty days of usage per server.

The terminal picked up a command palette

Hermes Agent
Hermes Agent
v0.21.0
  • Ctrl+P opens fuzzy search over every command
  • /status shows reasoning mode, pending approvals, context used
  • Status bar carries cache hit rate, latency, tokens per second
  • A global emergency stop, and terminal pets
Release v0.21.0, CLI and TUI
Part 02

Control P opens a fuzzy command palette. Status shows your reasoning mode, pending approvals, and context usage. The status bar can carry cache hit rate, latency and tokens per second. There is also a global emergency stop, and terminal pets.

03 New ground

Hermes Agent
Hermes Agent
v0.21.0
03
New ground
Release v0.21.0
Part 03

New ground.

The agent drives the in-app browser

Hermes Agent
Hermes Agent
v0.21.0
  • Hermes navigates, clicks, and reads the page directly
  • Walk a docs site or debug a web app inside your own app
  • Pop any page out to your system browser
Release v0.21.0, Desktop App
Part 03

The desktop browser used to be a window the agent could only look at. Now Hermes navigates it, clicks in it, and reads the page directly. Ask it to debug a web app and watch it happen inside your own app.

Six providers arrive built in

Hermes Agent
Hermes Agent
v0.21.0
Providers
Meta Model API — Muse Spark CommandCode Tencent TokenPlan Nebius Token Factory Ramp Router Actual Computer
Catalog
GLM-5.3-Flash qwen3.8-max, qwen3.8-flash Gemini 3.7 Flash MiniMax M3, free tier Nemotron 3.5 Lightning model_overrides patches any model
Release v0.21.0, Providers and Models
Part 03

Six providers ship built in: Meta's Model API, CommandCode, Tencent TokenPlan, Nebius Token Factory, Ramp Router, and Actual Computer. The catalogs picked up GLM-5.3-Flash, qwen3.8 max and flash, and Gemini 3.7 Flash. Model overrides let you patch any model's context window or pricing yourself.

New skills you can call today

Hermes Agent
Hermes Agent
v0.21.0

Call a website's hidden API with no browser

  • HAR-derived API clients: watch a site once, then call it directly
  • publish-site ships versioned sites to GitHub, Cloudflare or Netlify Pages
  • merge-reconciler settles conflicts between agents
  • Inbox triage, meeting action items, issue to pull request
Release v0.21.0, Skills Ecosystem
Part 03

A new skill watches a website once, then calls its hidden API directly, with no browser in the loop. Publish site does versioned publishing to GitHub, Cloudflare or Netlify Pages. A productivity wave covers inbox triage, meeting action items, and issue to pull request.

An injected agent cannot rewrite its own orders

Hermes Agent
Hermes Agent
v0.21.0
  • Writes to AGENTS.md, skills and memory always need approval
  • Redaction closed leaks in terminal errors, .env reads, checkpoints
  • Destructive Windows commands trip the approval system
  • macOS permission grants survive every update
Release v0.21.0, Security and Reliability
Part 03

Writes to agents markdown, skills, and memory stores now always require approval, so a prompt-injected agent cannot quietly rewrite its own standing orders. A redaction sweep closed secret leaks across terminal errors, environment file reads, and checkpoints. And macOS permission grants survive updates.

Hermes Agent v0.21.0

Hermes Agent
Hermes Agent
Nous Research
Hermes Agent
v0.21.0
hermes-agent.nousresearch.com
Release v0.21.0 (tag v2026.8.31), NousResearch/hermes-agent

Hermes Agent v0.21.0 is available now.