Granular 4-phase, 4-role GDS Service Standard assurance skills and synthesis engine.
87%
Does it follow best practices?
Run evals on this skill
Adds up to 20 points to the overall score
Low
Low-risk findings worth noting
Assess UK government services against the Service Standard published by the Central Digital and Data Office (CDDO) and the Government Digital Service (GDS). These 14 points are the only scoring framework this plugin uses.
Judge each point from evidence the team can show: research notes, decision logs, maps, prototypes, audit statements, telemetry, runbooks. A slide that asserts compliance is not evidence. A point is Met only when the evidence answers the criteria below for the phase being assessed. A point is Not Met when the evidence is missing, contradicts the claim, or breaches a red line in context/rubrics/.
Use these titles exactly in findings and in the published report.
The team has learned about the people who use the service, including people who need help, and has based decisions on that learning.
Met when:
Not Met when research is internal workshops, stakeholder opinion, or a single round used to confirm a design already chosen.
The service solves the problem the user actually has, including the parts that sit outside this team's organisation.
Met when:
Not Met when the team optimises its own transaction and leaves the user to re-enter data, phone a contact centre, or navigate a second organisation with no design for that handoff.
Online, phone, paper, face-to-face, and third-party channels tell the same story and hand the user across without making them start again.
Met when:
Not Met when the digital service is designed in isolation and other channels are "out of scope" or contradict it.
A person who has the documents and the right to use the service can finish the task without learning the department's structure.
Met when:
Not Met when the interface mirrors the legacy case-management system, invents new patterns for standard tasks, or uses internal jargon.
The service meets WCAG 2.2 AA. People who use assistive technology, and people who cannot use the digital service unaided, can still complete the task.
This point is non-negotiable. WCAG 2.2 AA is the minimum, not a target to grow into after go-live.
Met when:
Not Met when the only evidence is an automated scan, an internal "accessibility review", or a statement that the Design System is accessible. In Beta, if no participant used assistive technology, point 5 is Not Met. See context/rubrics/beta-red-lines.md.
The team has the skills to design, build, run, and iterate the service, and the service is not permanently dependent on a single supplier.
Met when:
Not Met when a discipline is missing, borrowed for the assessment week, or unable to influence decisions.
The team shows work early, changes course from evidence, and is governed in a way that allows that.
Met when:
Not Met when the plan, the architecture, or the business case cannot change in response to what the team learns.
The team can release changes safely and has a habit of doing so. Improvement is driven by what they measure and what users hit.
Met when:
Not Met when releases are rare, manual, or require a freeze, or when the team has no record of what they changed after the last assessment.
The service collects the minimum data, protects it, and the team can explain the risks.
Met when:
Not Met when personal data is in unowned spreadsheets, the team cannot name a lawful basis, or security testing is deferred until after public launch.
The team has agreed what good looks like and publishes the mandatory performance data.
Met when the team measures and can publish:
Also look at drop-off by step. A completion rate with no drop-off analysis hides where the service fails.
Met when baselines exist before public launch, a named person owns publication, and the measures describe the user's task rather than internal activity (applications received is not completion).
Not Met when success is "on time and on budget", or the data exists but will not be published.
The team can justify what they will buy, reuse, or build, and they are not locked to a vendor by accident.
Met when:
Not Met when a platform, framework, or supplier was chosen before the risks were tested, or when production infrastructure appears in Discovery.
New code is open so others can reuse it and so the service can be maintained if the supplier leaves.
Met when:
Not Met when the code is "available on request", owned only by a supplier, or open in name with a private history.
The team uses government platforms and open standards unless they have tested a reason not to.
Expect the team to have considered, and normally adopted:
Also expect open standards for data, APIs, and accessibility, and reuse of registers or canonical sources the department already trusts.
Met when a decision not to use a common platform is recorded, costed, and based on a constraint the team tested. Not Met when the team built its own identity, payments, notifications, or form runner without that record.
Users can complete the task during the hours they need to, and the team can detect, respond to, and recover from failure.
Met when:
Not Met when the only hosting evidence is a cloud account, or when recovery has never been tried.
rules/phase-expectations.md before you score. A later phase's criterion is not a failure in an earlier phase.context/rubrics/<phase>-red-lines.md. A fired red line makes that point Not Met..tessl-plugin
skills
alpha-assessor-design
alpha-assessor-lead
alpha-assessor-technical
alpha-assessor-user-research
assessment-report-synthesis
beta-assessor-design
beta-assessor-lead
beta-assessor-technical
beta-assessor-user-research
discovery-assessor-design
discovery-assessor-lead
discovery-assessor-technical
discovery-assessor-user-research
live-assessor-design
live-assessor-lead
live-assessor-technical
live-assessor-user-research