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Agent skill

Supercheck Feature Implementation

by supercheck-io in supercheck-io/supercheck

Implement a new or changed Supercheck feature end to end across schema, auth/RBAC, services, routes/actions, UI, queues/workers, CLI/recorder, tests, docs, and deployment contracts.

AGPL-3.0Auto-check passedBackend & APIs

Install Supercheck Feature Implementation

skills CLI
$ npx skills add supercheck-io/supercheck --skill supercheck-feature-implementation -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install supercheck-io/supercheck supercheck-feature-implementation --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/supercheck-io/supercheck.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/feature-implementation .claude/skills/supercheck-feature-implementation && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
supercheck-feature-implementation
GitHub stars
215
Token cost
~1.1k tokens
SKILL.md length
454 words
Files
1
Skills in repo
12
Repo updated
First seen
Licence
AGPL-3.0

At a glance

Implement a new or changed Supercheck feature end to end across schema, auth/RBAC, services, routes/actions, UI, queues/workers, CLI/recorder, tests, docs, and deployment contracts.

  • Works in 6 steps: Define user-visible behavior, owning… → Read neighboring code and tests. Reuse… → Identify public and rolling-deployment… → …
  • Tasks that involve Authorization and RBAC
  • SKILL.md covers Choose the required layers, Implementation workflow, Data and API rules and Background and external side…, plus 2 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Supercheck Feature Implementation is an agent skill from supercheck-io/supercheck. Implement a new or changed Supercheck feature end to end across schema, auth/RBAC, services, routes/actions, UI, queues/workers, CLI/recorder, tests, docs, and deployment contracts.

Its SKILL.md is about 1.1k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Backend & APIs, covering Authorization and RBAC and Deployment. The repository describes itself as: Open-Source Testing, Monitoring, and AI SRE — as Code. The licence is AGPL-3.0.

When your agent uses it

  • Tasks that involve Authorization and RBAC
  • Tasks that involve Deployment

Example prompts

  • “/supercheck-feature-implementation”

Workflow steps

6 steps, taken from the first numbered list in SKILL.md.

  1. Define user-visible behavior, owning organization/project scope, authorization resource/action, state transitions, limits, retention, side…
  2. Read neighboring code and tests. Reuse central auth context, RBAC, validation, security, queue, storage, billing, and logging helpers.
  3. Identify public and rolling-deployment contracts before changing schema, API, queue payload, statuses, CLI JSON, extension messages, or…
  4. Implement the smallest complete vertical slice, preserving cloud and self-hosted behavior.
  5. Add regression tests for happy, denied, malformed, cross-tenant, dependency-failure, retry/idempotency, cancellation, and cleanup paths as…
  6. Update public docs, examples, environment/deployment configuration, and affected agent skills in the same change.

What it can do on your machine

Read from SKILL.md and the folder at commit 0c077d0. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md (its code samples are mermaid).

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Supercheck Feature Implementation loads about 1.1k tokens when it runs. Until then it costs about 54 tokens; SKILL.md has 454 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~54
When it runs · the whole SKILL.md, loaded when a task matches
~1.1k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from supercheck-io/supercheck at commit 0c077d0, republished under its AGPL-3.0 licence (© supercheck-io). 454 words, ~1,135 tokens.

Download SKILL.mdSave it as .claude/skills/supercheck-feature-implementation/SKILL.md (or your agent's skills folder).
name
supercheck-feature-implementation
description
Implement a new or changed Supercheck feature end to end across schema, auth/RBAC, services, routes/actions, UI, queues/workers, CLI/recorder, tests, docs, and deployment contracts.

Supercheck feature implementation

Use the domain skill matching the feature. For cross-cutting work, load each applicable domain skill; every skill is self-contained and available directly under .agents/skills.

mermaid
flowchart LR
  INTENT[User intent] --> CONTRACT[Behavior and ownership contract]
  CONTRACT --> DATA[Schema and migration]
  CONTRACT --> AUTH[Auth and RBAC]
  DATA --> SERVICE[Business logic]
  AUTH --> SERVICE
  SERVICE --> API[Routes and actions]
  SERVICE --> QUEUE[Queue and worker]
  API --> UI[UI, hooks, CLI, recorder]
  QUEUE --> TEST[Test matrix]
  UI --> TEST
  TEST --> DOC[Docs and skills]

Choose the required layers

Feature shapeTypical layers
UI-onlyComponent/page, accessibility, client/server boundary, UI tests
App CRUDSchema/migration, validation, RBAC, service, route/action, hook/UI, audit, tests
App and workerApp CRUD plus shared queue contract, processor/service, capacity/cancellation, integration tests
External API/CLIBearer auth, stable schemas/status/output, rate limits, compatibility tests, docs
Recorder/browserExtension permissions/messages, app bridge/API, browser tests, store/release docs
Provider integrationCredential/webhook boundary, idempotency, durable state, failure/recovery, provider acceptance
InfrastructureConfig/manifests, secrets, security controls, rollout/rollback, rendered/live validation

Only add layers the behavior needs. Avoid speculative tables, CRUD, queues, abstractions, and client state.

Implementation workflow

  1. Define user-visible behavior, owning organization/project scope, authorization resource/action, state transitions, limits, retention, side effects, and failure behavior.
  2. Read neighboring code and tests. Reuse central auth context, RBAC, validation, security, queue, storage, billing, and logging helpers.
  3. Identify public and rolling-deployment contracts before changing schema, API, queue payload, statuses, CLI JSON, extension messages, or environment variables.
  4. Implement the smallest complete vertical slice, preserving cloud and self-hosted behavior.
  5. Add regression tests for happy, denied, malformed, cross-tenant, dependency-failure, retry/idempotency, cancellation, and cleanup paths as applicable.
  6. Update public docs, examples, environment/deployment configuration, and affected agent skills in the same change.

Data and API rules

  • Determine scope from the owning resource; authorize before reads/mutations and scope queries at the database boundary.
  • Validate all external input using existing schemas/patterns and bound strings, arrays, files, URLs, and result sizes.
  • Generate/review database migrations and handle existing data, uniqueness, indexes, deletion, and version skew.
  • Keep internal errors in structured/redacted logs and return stable safe public errors/status codes.
  • Audit security, membership, secret, billing, and administrative mutations.
Show full SKILL.md (163 more words)Show less

Background and external side effects

  • Keep app/worker queue contracts in parity and compatible during rolling deployments.
  • Do not enqueue decrypted secrets. Resolve scoped values immediately before isolated use.
  • Make retries safe and idempotent; use durable idempotency keys/records for provider, webhook, usage, and notification effects.
  • Propagate cancellation and cleanup through every layer; release capacity/resources exactly once.
  • Use SSRF-safe fetching for user-controlled URLs and verify signatures for inbound provider events.

UI and public client rules

  • Prefer Server Components and direct React Query data; keep query keys/invalidation exact.
  • Preserve loading, empty, error, keyboard, focus, labels, and responsive states.
  • CLI JSON and exit codes, recorder messages, public APIs, and configuration formats are compatibility contracts.
  • Server-side enforcement remains authoritative for permissions, entitlements, limits, and feature modes.

Completion gate

  • Run focused then broad checks from affected package directories.
  • Verify diff cleanliness and no generated/secret files.
  • State local evidence and outstanding browser, CI, provider, deployment, billing, or production gates separately.
  • Do not claim merge/release readiness only because implementation tests pass.

© supercheck-io, AGPL-3.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in .agents/skills/feature-implementation of supercheck-io/supercheck.

Open the folder on GitHubat commit 0c077d0

Compare with similar skills

Supercheck Feature Implementation next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Supercheck Feature Implementation compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Supercheck Feature Implementation this skillsupercheck-io/supercheck215—~1.1kAutomated safety check: PassAGPL-3.0
Coreweave Security Basicsjeremylongshore/tons-of-skills-marketplace2.8k—~1.6kAutomated safety check: PassMIT
Azure Validatemicrosoft/GitHub-Copilot-for-Azure2551 repos~880Automated safety check: PassMIT
Mirrord Operatoraiskillstore/marketplace430—~4.6kAutomated safety check: PassNone
Azure Custom VisionMicrosoftDocs/Agent-Skills777—~1.6kAutomated safety check: PassCC-BY-4.0
Azure Dev BoxMicrosoftDocs/Agent-Skills777—~2.6kAutomated safety check: PassCC-BY-4.0

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More from supercheck-io/supercheck

All 12 skills in this repo

  • Supercheck Security Auth

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  • Supercheck Architecture

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    215 GitHub stars~1.3k tokensUpdated today
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  • Supercheck Code Review

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    215 GitHub stars~1k tokensUpdated today
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  • Supercheck Data Storage

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    Work on Supercheck PostgreSQL data, S3 or MinIO artifacts, signed URLs and asset proxying, retention cleanup, dashboard/report queries, exports, or audit logging.

    215 GitHub stars~942 tokensUpdated today
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  • Supercheck Execution Engine

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    215 GitHub stars~1.2k tokensUpdated today
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  • Supercheck Infrastructure Deployment

    supercheck-io/supercheck

    Work on Supercheck Docker Compose, K3s, Kubernetes manifests, gVisor, OpenTofu/Hetzner, secrets, external services, autoscaling, backups, disaster recovery, DNS/TLS, or production deployment.

    215 GitHub stars~1.4k tokensUpdated today
    Auto-check: notes

Categories

Questions about Supercheck Feature Implementation

What does Supercheck Feature Implementation do?

Implement a new or changed Supercheck feature end to end across schema, auth/RBAC, services, routes/actions, UI, queues/workers, CLI/recorder, tests, docs, and deployment contracts. Supercheck Feature Implementation is an agent skill from supercheck-io/supercheck. Implement a new or changed Supercheck feature end to end across schema, auth/RBAC, services, routes/actions, UI, queues/workers, CLI/recorder, tests, docs, and deployment contracts.

When should I use Supercheck Feature Implementation?

Supercheck Feature Implementation fits situations like: tasks that involve Authorization and RBAC; tasks that involve Deployment.

How do I install Supercheck Feature Implementation in Claude Code?

Run `npx skills add supercheck-io/supercheck --skill supercheck-feature-implementation -a claude-code`. Or copy the skill folder (.agents/skills/feature-implementation in supercheck-io/supercheck) into .claude/skills/supercheck-feature-implementation in your project. Claude Code loads it when a task matches its description.

How do I install Supercheck Feature Implementation in Codex?

Run `npx skills add supercheck-io/supercheck --skill supercheck-feature-implementation -a codex`. Or copy the skill folder (.agents/skills/feature-implementation in supercheck-io/supercheck) into .agents/skills/supercheck-feature-implementation in your project. Codex loads it when a task matches its description.

Can I use Supercheck Feature Implementation in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add supercheck-io/supercheck --skill supercheck-feature-implementation -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/supercheck-feature-implementation, .gemini/skills/supercheck-feature-implementation, .github/skills/supercheck-feature-implementation and .opencode/skills/supercheck-feature-implementation in your project.

What does Supercheck Feature Implementation need to run?

SKILL.md names no scripts, command-line tools or credentials: Supercheck Feature Implementation is instructions for the agent only.

Does Supercheck Feature Implementation access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Supercheck Feature Implementation safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Supercheck Feature Implementation use?

Supercheck Feature Implementation is published under the AGPL-3.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Supercheck Feature Implementation use?

About 1.1k tokens (SKILL.md is roughly 4.5k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Supercheck Feature Implementation?

Skills that share tags, products or a category with Supercheck Feature Implementation: Coreweave Security Basics (jeremylongshore/tons-of-skills-marketplace, 2.8k stars), Azure Validate (microsoft/GitHub-Copilot-for-Azure, 255 stars), Mirrord Operator (aiskillstore/marketplace, 430 stars) and Azure Custom Vision (MicrosoftDocs/Agent-Skills, 777 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Supercheck Feature Implementation?

supercheck-io (a GitHub organization) maintains it in supercheck-io/supercheck, which has 215 GitHub stars. The repository holds 12 skills in this directory. The repository was last updated on October 7, 2026.

Source: supercheck-io/supercheck on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.