agentutility(7)$ man dom-change-diff
/dom-change-diff
PRICE / CALL
$0.01
USDC · base mainnet · scheme: exact
METHOD
POST
CLUSTER
browserworkflowCATEGORY
uncategorized
STATUS
● live
NAME
dom-change-diff — dom diff for two html snapshots of the same page or component, built for browser-automation scripts whose css selectors quietly break aft…
SYNOPSIS
POST https://x402.agentutility.ai/dom-change-diff
Content-Type: application/json
X-PAYMENT: <signed-transferWithAuthorization>
{ ... }↳ first call →
402 Payment Required. Sign USDCtransferWithAuthorization, retry with theX-PAYMENT header.DESCRIPTION
DOM diff for two HTML snapshots of the same page or component, built for browser-automation scripts whose CSS selectors quietly break after a site redesign. Send before_html and after_html plus the selectors your workflow watches, and get back per-selector added/removed/moved/attribute-changed status, stale DOM detection for targets that vanished, and selector stability hints: replacement selectors built from an element's id, data-testid, or aria-label so a broken automation step can self-repair. Use it as a browser workflow repair tool, a selector-stability checker, or a pre-flight check before re-running a scraping or RPA script against a site that may have changed.
INPUT — request schema
| property | type | description | req? |
|---|---|---|---|
| before_html | string | The earlier/reference HTML snapshot of the page or component. | required |
| after_html | string | The current HTML snapshot to compare against before_html. | required |
| selectors | array | Optional list of CSS selectors your automation depends on (e.g. '#login-btn', '.price'). Up to 50. | optional |
OUTPUT — response shape
| field | type | description |
|---|---|---|
| before_element_count | string | — |
| after_element_count | string | — |
| added_elements | string | — |
| removed_elements | string | — |
| selector_changes | string | — |
| has_changes | string | — |
EXAMPLES — two ways to call
EXAMPLE 1 · curl
curl -X POST https://x402.agentutility.ai/dom-change-diff \
-H 'Content-Type: application/json' \
-d '{ }'first response =
402 Payment Required with payment requirements; sign + retry with X-PAYMENT.EXAMPLE 2 · mcp
# Install the MCP package for this endpoint's cluster npx -y @agentutility/mcp-<cluster> # Required: EVM private key with USDC on Base export X402_PRIVATE_KEY=0x... # Then call the dom-change-diff tool from your MCP-aware agent.
MCP server handles payment automatically — your coding agent just calls the tool by name.
METADATA
- tags
- browser-workflowdomchangediffdom-change-diff
- methods
- POST
- cluster
- browserworkflow
- price
- $0.01 USDC per call
ADJACENT — other endpoints in browserworkflow
| endpoint | description | price |
|---|---|---|
| browser-flow-digest | Browser flow digest API that compresses a recorded trajectory or trace into reusable workflow memory: an ordered step list, the precondit… | $0.02 |
| form-fill-plan | Form fill plan API that turns an HTML form plus a plain-language goal into an ordered browser form automation plan: selector, field label… | $0.02 |
SEE ALSO