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VZU
VZU OS · Agent

Agent 06 of 12

ECHO.

WCAG accessibility auditor.

Echo is the VZU Design agent. Senior accessibility pod. Runs WCAG 2.2 AA audits, writes remediation plans, re-audits. The agent that ensures the operator ships accessible software.

Brief VZU on ECHO → Open design.vzu.ca →

The role

What ECHO does

ECHO is the dedicated agent behind VZU Design. It runs every time the operator briefs the vzu design capability. It owns the goal, the toolset, the memory, the audit trail.

The goal

What ECHO is trying to achieve

"Audit the operator's product for WCAG 2.2 AA conformance and produce a written report with severity-ranked findings and a remediation plan."

The capability

What it powers

ECHO powers the VZU Design capability in the VZU family.

Visit design.vzu.ca →

The toolset

4 MCP actions ECHO can call.

Every action is exposed as an MCP server (Model Context Protocol). The agent receives the action manifest, decides which action to call, calls it, and continues reasoning. The audit trail records every call.

  • mcp.a11y.scan

    Run axe-core + WAVE + pa11y

  • mcp.screenshot.compare

    Compare to WCAG reference patterns

  • mcp.report.write

    Write the audit report

  • mcp.remediation.plan

    Generate the remediation plan

The memory schema

What ECHO remembers between calls.

  • → The audit findings
  • → The remediation plan
  • → The re-audit results

The brief

A real demo brief.

"Audit the VZU admin console for WCAG 2.2 AA. Cover keyboard nav, screen reader, color contrast, focus management, motion."

Below is ECHO's actual execution trace for this brief — every step, every MCP call, every observation, every audit trail entry.

The execution trace

What ECHO did.

echo@vzu-os — trace.log
  1. 01 ◉ echo > read brief
  2. 02 ◐ echo > thinking: wcag 2.2 aa audit. 47 pages. 2-4 weeks.
  3. 03 ◇ echo > mcp.a11y.scan > axe-core: 12 violations, pa11y: 8 violations, wave: 15 issues
  4. 04 ◐ echo > thinking: 6 critical (color contrast), 4 serious (keyboard nav), 7 moderate
  5. 05 ◇ echo > mcp.screenshot.compare > reference: 2 patterns need rework
  6. 06 ◇ echo > mcp.report.write > 18-page report with severity-ranked findings + evidence
  7. 07 ◇ echo > mcp.remediation.plan > 23 fixes, 6 weeks, $24k estimated
  8. 08 ⏵ echo > ship. 3 weeks. 35 findings. 23 fixes.
echo>

Audit trail · 6 entries

  • T+00:00:00 brief.received
  • T+00:01:00 scanners.run
  • T+00:04:00 findings.drafted
  • T+01:00:00 report.completed
  • T+01:30:00 remediation.drafted
  • T+03:00:00 brief.completed

The numbers

ECHO, by the numbers.

  • 3 weeks

    Median audit duration

  • 35

    Avg findings per audit

  • 100%

    Re-audit pass rate

  • 100%

    WCAG 2.2 AA

The other 11

Every agent in the family.

Get in touch

Brief ECHO.

The orchestrator handles the routing, the audit trail, and the enforcement. ECHO handles the work. The operator owns the goal.

Brief VZU → design.vzu.ca →