instrument-feature-flag SKILL.md skillA
instrument-feature-flag from harness/harness-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add harness/harness-skills/instrument-feature-flag@v1.0.1Pins v1.0.1 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- harness/harness-skills
- Path
skills/fme/instrument-feature-flag/SKILL.md- Versions recorded
- 1
- Latest version
- v1.0.1, committed Oct 14, 2026
- Size
- 15,114 bytes
- Repository stars
- 122
- License
- Apache-2.0
Gate application code behind an existing Harness FME feature flag. Detect the app's language, framework and any existing flag wrapper first; ask only what that can't resolve (target app, subject identity, gating point, treatment/config/fallback names, extension needs). Prefer an existing wrapper; otherwise propose a thin, customer-extensible facade or hook — never a new framework or second SDK client — approved before editing. Map named treatments to branches with a safe, non-boolean-coerced…
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Instrument Feature Flag Skill identifier: `instrument-feature-flag`. Gate application code behind an existing FME flag: inspect the real app first, prefer or design a small customer-extensible wrapper, get it approved, implement the minimal edits, and test at the wrapper and call-site boundary. Related: `/create-feature-flag` (new flag), `/update-flag-targeting` (missing/insufficient targeting), `/feature-flag-onboarding` (first-time setup, which delegates here for code). ## Tools Works through the Harness MCP server or the Harness CLI; names are from [tool-map.md](../../../references/fme/tool-map.md). This skill only reads Harness flag state for the selected environment — flag/definition writes are delegated to `/create-feature-flag` and `/update-flag-targeting`. | Operation | MCP | CLI | |-----------|-----|-----| | List flags | `harness_list` · `fme_feature_flag` · `size: 50` · `compact: false` | `harness list feature_flag --json --limit 50` | | Get flag | `harness_get` · `fme_feature_flag` · `params.feature_flag_name` | `harness get feature_flag <name> --json` | …
Read the whole file at its exact version.
How to install
mdr add harness/harness-skills/instrument-feature-flag@sha256:f7497d5b1eb2db4fThe line at the top of this page pins the label v1.0.1, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_zue36vxcgpjyuxxc)
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Versions
The registry has recorded 1 version of this file, committed on Oct 14, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (15114 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
harness/harness-skills · 122 stars · license Apache-2.0 · pushed 2026-10-14 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_zue36vxcgpjyuxxc GET https://markdownregistry.com/api/v1/resolve?ref=harness/harness-skills/instrument-feature-flag GET https://markdownregistry.com/api/v1/blob/f7497d5b1eb2db4fe5916a67287059a380d920ca3557707b6689106d5723c04e
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.