angular-feature-flags

A review of feature flags in Angular, which are switches that turn software features on or off, and their coordination with a .NET backend. It checks how flags are evaluated, named, shared, and removed.

In plain words
What is it for?
Use it to review runtime flag services, frontend-backend flag contracts, fallback behavior, centralized checks, removal of old flags, and matching server-side enforcement.
Why use it?
It finds switches that require rebuilding the app, disagree with backend names, fail when the flag service is unavailable, or hide a feature without enforcing the same restriction on the server.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/agenticpawan/fullstack-pilot/angular-feature-flags
Any agent
npx skills add AgenticPawan/FullStack-Pilot --skill angular-feature-flags
Clone the repo
git clone --depth 1 https://github.com/AgenticPawan/FullStack-Pilot

Made for: Claude Code, Codex.

Per session 93 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,204 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00093 $0.02204
Opus 5 $0.00046 $0.01102
Sonnet 5 $0.00019 $0.00441
Haiku 4.5 $0.00009 $0.00220

Measured yesterday against content hash 838d2e01ca6f, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

angular-feature-flags scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/pilot-angular/skills/angular-feature-flags/SKILL.md · 287 lines

How it starts

The opening of the file, as written. The whole thing — 287 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Standard IDs

ID Severity What it checks
AFF-001 P1 Feature flag hardcoded as a build-time environment.ts boolean instead of a runtime-evaluated flag
AFF-002 P0 Flag key names not contracted with the backend, causing silent desync
AFF-003 P2 Flag checks scattered as ad-hoc conditionals instead of a centralized service/directive
AFF-004 P1 No fallback behavior when the flag-evaluation endpoint is unreachable at startup
AFF-005 P2 Fully-rolled-out flag never removed, leaving permanent dead conditional branches
AFF-006 P0 Flag-gated UI with no matching server-side enforcement of the same restriction

Check A — Flag baked into environment.ts at build time (AFF-001)

Detection

Grep environment.ts/environment.prod.ts for boolean properties like enableNewCheckout: true. Because these values are compiled into the bundle, toggling the flag requires a full rebuild and redeploy of the SPA — defeating the entire point of feature flagging, which is to decouple deployment from release. It also means every environment tier (dev/staging/prod) needs its own bundle just to differ on flag state.

BAD — compiled-in flag constant

// environment.prod.ts
export const environment = {
  production: true,
  enableNewCheckout: false, // toggling this means a full rebuild + redeploy
};

// checkout.component.ts
export class CheckoutComponent {
  showNewFlow = environment.enableNewCheckout;
}

GOOD — runtime-evaluated flag via a shared service

@Injectable({ providedIn: 'root' })
export class FeatureFlagService {
  private http = inject(HttpClient);
  private flags = signal<Record<string, boolean>>({});

  async loadFlags(): Promise<void> {
    const flags = await firstValueFrom(this.http.get<Record<string, boolean>>('/api/features'));
    this.flags.set(flags);
  }

  isEnabled(key: string): boolean {
    return this.flags()[key] ?? false;
  }
}

Read the full file on GitHub · 287 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. yesterday First seen · 287 lines · 93 tokens per session scan A 838d2e01ca6f

Subscribe to this mod's changes

angular-feature-flags is a skill published in the GitHub repository AgenticPawan/FullStack-Pilot (2 stars, last pushed 1mo ago), licensed MIT. It adds 93 tokens to every session and 2,204 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Related

Other skills, from other repositories

azure-mgmt-apicenter-dotnet

Azure API Center SDK for .NET. Centralized API inventory management with governance, versioning, and discovery. Use for creating API services, workspaces, APIs, versions, definitions, environments, deployments, and metadata schemas. Triggers: "API Center", "ApiCenterService", "ApiCenterWorkspace", "ApiCenterApi", "API…

microsoft/skills · 97 tokens

azure-mgmt-botservice-dotnet

Azure Resource Manager SDK for Bot Service in .NET. Management plane operations for creating and managing Azure Bot resources, channels (Teams, DirectLine, Slack), and connection settings. Triggers: "Bot Service", "BotResource", "Azure Bot", "DirectLine channel", "Teams channel", "bot management .NET", "create bot".

microsoft/skills · 78 tokens

azure-communication-chat-java

Build real-time chat applications with Azure Communication Services Chat Java SDK. Use when implementing chat threads, messaging, participants, read receipts, typing notifications, or real-time chat features.

microsoft/skills · 41 tokens

union-type-wrappers

Add typed getters and setters over BinaryData properties that represent TypeSpec union types in generated Java models. Use when generated classes expose BinaryData for union-typed fields and you need ergonomic, type-safe accessors instead.

Azure/azure-sdk-for-java · 49 tokens

refresh-arm-sdk-release

WORKFLOW SKILL — Prepares Azure.ResourceManager SDK refresh pull requests in azure-sdk-for-net. WHEN: "prepare sdk refresh", "refresh Azure.ResourceManager package", "update ARM SDK from autorest tag", "refresh changelog dependencies". INVOKES: git and GitHub pull request tools for branch, commit, push, and PR…

Azure/azure-sdk-for-net · 91 tokens

azsdk-common-pipeline-analysis

Analyze Azure SDK CI/CD pipeline failures into a structured diagnosis, and define the required output format. Load this skill before calling azsdkanalyzepipeline, which returns raw failure data that this skill interprets and formats. USE FOR: "pipeline failed", "build failure", "CI check failing", "tests failing in…

Azure/azure-sdk-for-net · 192 tokens