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.
npx skills add laurigates/claude-plugins --skill openfeaturegit clone --depth 1 https://github.com/laurigates/claude-pluginsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/laurigates/claude-plugins/openfeature)<a href="https://agentmods.dev/skills/laurigates/claude-plugins/openfeature"><img src="https://agentmods.dev/badge/skills/laurigates/claude-plugins/openfeature/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/laurigates/claude-plugins/openfeature"><img src="https://agentmods.dev/badge/skills/laurigates/claude-plugins/openfeature.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00034 | $0.01971 |
| Opus 5.5 | $0.00014 | $0.00788 |
| Sonnet 5.5 | $0.00007 | $0.00394 |
| Haiku 4.5 | $0.00003 | $0.00197 |
Grade A, and why
openfeature 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 14d ago.
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.
How it starts
The opening of the file, as written. The whole thing — 278 lines — stays where its author put it; the contents beside it link to each section on GitHub.
OpenFeature SDK Integration
When to Use This Skill
| Use this skill when... | Use a sibling skill instead when... |
|---|---|
| You need the vendor-agnostic OpenFeature SDK API, hooks, and evaluation patterns | You need the GO Feature Flag (GOFF) self-hosted backend specifics — use go-feature-flag |
| You are choosing between providers or wiring an OpenFeature client into application code | You want to scaffold the full feature-flag stack (SDK + provider + CI) from scratch — use configure-feature-flags |
| Another skill needs the canonical reference for OpenFeature semantics | You want runtime detection of an existing feature-flag setup before changing anything — use configure-feature-flags |
Vendor-agnostic feature flag SDK providing standardized API across languages and providers. Use when implementing feature flags, A/B testing, canary releases, or progressive rollouts with any feature flag backend.
Activation triggers
- User mentions "feature flags", "feature toggles", or "feature management"
- User asks about A/B testing or canary releases
- User wants to implement progressive rollouts
- Project has OpenFeature SDK dependencies
- User mentions OpenFeature, flagd, or vendor-agnostic flags
Related skills:
go-feature-flag- Specific GO Feature Flag provider detailslaunchdarkly- LaunchDarkly provider integration
Core Concepts
Architecture
┌─────────────────────────────────────────────────────────────┐
│ Application Code │
├─────────────────────────────────────────────────────────────┤
│ OpenFeature SDK (API) │
│ ┌─────────────┬──────────────┬─────────────┬─────────────┐ │
│ │ getBool() │ getString() │ getNumber()│ getObject()│ │
│ └─────────────┴──────────────┴─────────────┴─────────────┘ │
├─────────────────────────────────────────────────────────────┤
│ Provider │
│ ┌─────────────────────────────────────────────────────────┐ │
│ │ GO Feature Flag │ flagd │ LaunchDarkly │ Split │ etc │ │
│ └─────────────────────────────────────────────────────────┘ │
├─────────────────────────────────────────────────────────────┤
│ Flag Source │
│ ┌─────────────────────────────────────────────────────────┐ │
│ │ File │ S3 │ GitHub │ API │ ConfigMap │ │
│ └─────────────────────────────────────────────────────────┘ │
└─────────────────────────────────────────────────────────────┘
What ships with it
2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 14d ago Changed · -106 lines 9c723566ca32
- 1mo ago First seen · 384 lines · 34 tokens per session scan A c554f921008c
openfeature is a skill published in the GitHub repository laurigates/claude-plugins (60 stars, last pushed yesterday), licensed MIT. It adds 34 tokens to every session and 1,971 once invoked, about $0.0001 per session on Opus 5.5. 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 2026-09-03.
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