The agent’s behavior on your site is steered by three kinds of context, all managed under Delta → Context.
Skills
Skills are playbooks for one kind of work. The agent loads a skill when the task calls for it. Delta ships a default set; each site holds its own copy, so you or the agent can edit them, add new ones, or restore the defaults. The agent asks for confirmation before it changes an existing skill. The set changes between releases as we learn what agents need; the table below is the set at the time of writing.
| Skill | Purpose |
|---|---|
onboarding |
Set up a new site: site basics, design system, and templates. |
build-from-prompt |
Build a new site from a written brief. |
clone-from-url |
Recreate a live site from its URL (requires a browser tool). |
build-from-visual |
Build from screenshots, mockups, or Figma exports. |
change-design-system |
Bring your own design system, or go back to Delta’s seed. |
design |
Change design tokens, site CSS, components, or notes. |
components |
Define and maintain design-system components. |
build-site-templates |
Build the basic templates: header, footer, single, archive, search, 404, loop item, comments, and shop templates with WooCommerce. |
blog-and-conditions |
Set up blogs, archives, singles, and CPT listings. |
content-types |
Custom post types and fields through a supported plugin. |
contact-forms |
Contact forms through a supported plugin. |
woocommerce |
Shop, product, cart, and checkout work. |
wordpress-objects |
Users, comments, terms, meta, options, plugins. |
front-panel |
Work with what you select in the Front panel, and show you a part of the page. |
polish-and-verify |
Visual, spacing, and accessibility finish pass. |
troubleshooting |
Failure diagnosis and support reports. |
about-delta |
Answer questions about Delta: what it is, the docs, help, and what’s new. |
seo |
Search titles, descriptions and share tags, through SureRank or SEOPress. |
redirection |
Redirects when a URL moves, and the 404 log, through Redirection. |
static-export |
What a static copy keeps and loses, and the export through Simply Static. |
automaticcss |
Read and change Automatic.css settings when it is the design system. |
acss-mapping |
The map from Delta’s seed names to Automatic.css names, for a switch. |
schemawp |
Run SchemaWP’s own Automatic.css tools through Delta. |
session-router |
Internal: picks the right skill on ambiguous requests. |
Rules
Rules are short constraints that always apply, with the same editing model as skills. Delta ships eight on a plain site, and a ninth appears when WooCommerce is active. They include:
site-context: what the site is and how it speaks. You fill it in, or the agent fills it in during onboarding with your approval.design-system-map: the active design system’s names, one line per job, such as page background or text.css-tokens: every CSS value comes from the design system, with no hard-coded colours.memory-logging: the agent records what a session decided in Memory and marks open items.entry-html-no-loops: no{{#posts}}in page HTML.semantic-accessible: landmarks, heading order, and accessible labels.ability-footguns: export before an import, a replace or a delete; the moves that are hard to undo.session-routing: on a site that already has a design, the agent picks the right skill before it starts.
When an agent changes one
When an agent edits a rule or a skill, or makes a new one, the Context screen lists it under Changed by an agent until you keep it or undo it. See Changed by an agent panel.
Guardrails
Guardrails belong to the theme. You can switch each one on or off under Context → Guardrails, but their text is not editable, by you or by the agent. Most of them make the agent ask before sensitive actions. One, under Enforced By Site, is not a request to the agent but a stop: the site holds the call until you approve it on Delta → Approvals.
| Guardrail | Effect |
|---|---|
| Session protocol | Sets the required call order at session start. |
| Design scope | Decides when a session includes design work. |
| List paging | Keeps reads paged instead of full-catalog dumps. |
| Layer hierarchy | Prefers design system → components → templates over one-off styles. |
| WordPress and Delta truth | Cross-layer facts the agent must respect. |
| Prefer design tokens over magic numbers | Design tokens over hard-coded values. |
| Verify before done | Read back and check after every meaningful write. |
| Design notes | Ask before changing the design-system notes, before a snapshot restore (which overwrites them), or before a design pack reset. |
| Confirm primary guideline changes | Ask before changing existing skills or rules. |
| Confirm plugin installs | Ask before installing, activating, updating, or deleting plugins. With the extra security layer on, the site holds the call too. |
| Destructive care | Confirm before replace or fan-out operations. |
| Extra security layer (Enforced By Site) | Plugin installs, accounts that run the site and settings that open it wait for your approval in wp-admin. On by default. See Approvals. |
Related: Tools and abilities · Approvals · Changed by an agent panel