For AI agents: The documentation index is at https://docs.digitalocean.com/llms.txt. Markdown versions of pages use the same URL with index.html.md in place of the HTML page (for example, append index.html.md to the directory path instead of opening the HTML document).

Agents on Harness Runtime are not limited to code. The adapters are coding agents, but a coding agent is good at reading a brief, researching, writing files, and committing them, which is most of a content pipeline.

This example runs weekly: the agent researches a topic with web search, drafts a post in your brand voice, and commits it to a content repository as a branch for a human to review. It introduces two things the earlier examples do not use: inline skills, and tools from Action Gateway.

Teach the Agent Your Voice With a Skill

A skill is instructions the agent loads when it decides they are relevant. The description is what it reads when deciding, so write it as “Use when …” and make it specific. A vague description means the skill is loaded at the wrong times or not at all.

Skills are declared inline in the spec, so a brand voice guide travels with the environment instead of living in a prompt someone has to remember to paste.

Environment Spec

Save the following as content-drafts.yaml:

name: weekly-content-draft
agent: claude-code
size: mars-2vcpu-4gb
repos:
  - your-org/content
env:
  HARNESS_INFERENCE_MODEL: anthropic-claude-5-sonnet
secrets:
  HARNESS_INFERENCE_API_KEY: ${HARNESS_INFERENCE_API_KEY}
  GITHUB_TOKEN: ${GITHUB_TOKEN}
egress:
  - github.com
  - api.github.com
tools:
  - do.actions: [exa_web_search, exa_web_fetch]
skills:
  - name: brand-voice
    description: "Use when drafting or editing any customer-facing copy, including blog posts, release announcements, and social copy."
    instructions: |
      # Brand Voice

      Write for a working practitioner who is short on time.

      - Lead with what changed and who it affects.
      - Prefer concrete nouns over category words. "Postgres" beats "data layer".
      - No exclamation marks, no rhetorical questions, no "in today's world".
      - Claims about performance or cost need a number or they get cut.
      - British and American spellings both appear in our archive. Use American.
permissions:
  default: allow
  rules:
    - tool: bash
      match: { command: "rm -rf *" }
      action: deny

Note what is not in egress. Action Gateway catalog tools reach their providers over platform-managed networking, so exa_web_search works without an egress entry. Only hosts the sandbox itself connects to need listing, which is why github.com is there.

Create the Schedule

Create a cron trigger that fires every Monday morning:

doctl harness-runtime triggers create \
  --kind cron \
  --name weekly-content-draft \
  --session-mode fresh \
  --spec content-drafts.yaml \
  --prompt "Clone your-org/content. Research what changed in managed Postgres offerings over the past week, then draft one 600-word post about it. Commit the draft to a new branch named drafts/<date> and push it." \
  --cron-expr "0 9 * * 1" \
  --timezone America/New_York \
  --output-mode email \
  --output-email <your-email-address>

The agent pushes a branch rather than publishing. A human opens the pull request, edits, and merges. Keeping the last step human is the difference between a useful drafting agent and a publishing pipeline nobody reviews.

Adapt It

Related

• Connect Action Gateway to Harness Runtime for attaching and scoping tools.
• Environment Spec Reference for every field a skill accepts.
• Run Agents With Triggers for schedules, payload placeholders, and execution history.