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Skills are markdown files containing instructions that Hermes loads on demand. They are the agent’s procedural memory: each skill captures a proven, reusable approach to a specific type of task — not general facts, but step-by-step know-how.

What skills are

A skill is a directory containing a SKILL.md file plus optional supporting files (references, templates, scripts, assets). When you invoke a skill — either by name or via /skills — the agent injects its contents into the conversation as a user message, preserving Anthropic prompt caching. Skills are distinct from MEMORY.md (broad declarative facts) and USER.md (your profile). A skill answers the question: how do I do this specific type of task?

Skills location

All skills live in ~/.hermes/skills/. The directory is organized by category:
~/.hermes/skills/
├── my-skill/
│   ├── SKILL.md
│   ├── references/
│   ├── templates/
│   └── scripts/
└── category-name/
    └── another-skill/
        └── SKILL.md

Built-in skill categories

Hermes ships with a library of bundled skills covering common categories:
CategoryDescription
software-developmentCoding workflows, debugging, PR review, architecture
researchLiterature search, summarization, citation
productivityTask planning, meeting prep, writing assistance
data-scienceData analysis, visualization, ML workflows
diagrammingMermaid, PlantUML, architecture diagrams
creativeWriting, brainstorming, ideation
emailEmail drafting and triage
githubRepository management, issue triage, PR workflows
mediaImage, audio, and video processing
note-takingStructured note capture and organization
social-mediaContent creation and scheduling
mlopsModel training, deployment, monitoring
smart-homeHome Assistant automations and controls
domainDomain-specific professional workflows

Autonomous skill creation

After completing a complex task, Hermes may offer to save the approach as a new skill. This happens when the agent determines the solution is novel enough to be worth keeping — a self-curating learning loop. You can also ask the agent to create a skill at any time:
Save what we just did as a skill called "deploy-to-fly"
The agent will create ~/.hermes/skills/deploy-to-fly/SKILL.md with structured instructions, code examples, and any relevant references.

Skills self-improvement

When you use a skill and the agent finds a better approach, it can update the skill in place. This means skills improve over time through use — the instructions become more accurate, edge cases get documented, and outdated steps get removed.

The /skills slash command

The /skills command is your interactive interface for the skills library. Use it both in the CLI and on messaging platforms:
SubcommandDescription
/skillsOpen the interactive browser
/skills search <query>Search skills by name or description
/skills install <name>Install a skill from the Hub
/skills inspect <name>View a skill’s full contents
/skills enable <name>Enable a bundled or installed skill
/skills disable <name>Disable a skill from autoloading

Installing a skill from the Hub

1

Search the Hub

Run /skills search <topic> to find community skills on agentskills.io. Results show the skill name, description, author, and trust level.
2

Inspect before installing

Run /skills inspect <identifier> to read the full SKILL.md before installing. Skills are security-scanned automatically.
3

Install the skill

Run /skills install <identifier> to download and install the skill to ~/.hermes/skills/. Hub skills are saved under a subdirectory matching their source.
4

Invoke the skill

Either type /<skill-name> as a slash command, or ask Hermes directly: “use the deploy-to-fly skill”.

Skills Hub

The Skills Hub at agentskills.io hosts community-contributed skills. Skills are tagged by category and trust level:
  • Official — bundled with Hermes, maintained by Nous Research
  • Trusted — vetted community contributions
  • Community — unvetted community contributions (inspect before installing)
All skills downloaded from the Hub are scanned for injection and exfiltration patterns before installation.

Creating custom skills manually

Create a directory in ~/.hermes/skills/ with a SKILL.md file:
mkdir -p ~/.hermes/skills/my-workflow
A well-structured skill file includes:
# Skill name

Brief description of what this skill is for.

## When to use this skill

- Use case 1
- Use case 2

## Steps

1. First step with specific commands or instructions
2. Second step
3. ...

## Notes

- Edge cases, caveats, or warnings
- Known issues and workarounds

## References

- Link or file reference
Supporting files go in references/, templates/, scripts/, or assets/ subdirectories.
You can point Hermes at an additional skills directory using the HERMES_OPTIONAL_SKILLS_DIR environment variable. This is useful for team-shared skills stored in a repository:
export HERMES_OPTIONAL_SKILLS_DIR=/path/to/team-skills
Skills in the optional directory appear alongside skills in ~/.hermes/skills/.

Compatibility

Hermes skills follow the agentskills.io open standard. Skills you create or install are portable to any agent that implements this standard.

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