experiment-sdk-testing SKILL.md skillA
experiment-sdk-testing from testland/qa is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add testland/qa/experiment-sdk-testing@git:20260813.7f38a7fPins git:20260813.7f38a7f in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- testland/qa
- Path
plugins/qa-feature-flags/skills/experiment-sdk-testing/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260813.7f38a7f, committed Aug 13, 2026
- Size
- 6,381 bytes
- Repository stars
- 11
- License
- MIT
Umbrella for experimentation-SDK test harnesses: the shared offline-datafile / hermetic-init pattern (commit a point-in-time flag/experiment config fixture, initialize the SDK with no network, pin arms per test, assert assignment integrity), with per-vendor references for Statsig (localMode + overrideGate), Optimizely (datafile + forced decisions), Split.io / Harness FME (localhost mode + features map or YAML fixture), Amplitude Experiment (local evaluation + bootstrap), and VWO…
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
# experiment-sdk-testing ## Overview Every major experimentation SDK ships the same hermetic-test mechanism under a different name: a **point-in-time config fixture** (datafile, settings file, flag payload, features map) that the SDK evaluates locally, so tests make zero network calls, pollute no production analytics, and stay deterministic. The vendor-specific mechanics differ only in how the fixture is loaded and how an arm is pinned. ## Routing table | SDK | Offline mechanism | Arm pinning | Reference | |---|---|---|---| | Statsig | `localMode: true` | `overrideGate` / `overrideConfig` | [references/statsig.md](references/statsig.md) | | Optimizely | JSON datafile fixture | `set_forced_decision` | [references/optimizely.md](references/optimizely.md) (+ [optimizely-recipes.md](references/optimizely-recipes.md)) | | Split.io / Harness FME | `authorizationKey: 'localhost'` + features map / YAML | Per-key fixture entry (no override API) | [references/split-io.md](references/split-io.md) (+ [split-io-example.md](references/split-io-example.md)) | …
Read the whole file at its exact version.
How to install
mdr add testland/qa/experiment-sdk-testing@sha256:c91d1b44bdd4c08eThe line at the top of this page pins the label git:20260813.7f38a7f, 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_qe2a62zeepbd62om)
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Versions
The registry has recorded 1 version of this file, committed on Aug 13, 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 (6381 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
testland/qa · 11 stars · license MIT · pushed 2026-10-20 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_qe2a62zeepbd62om GET https://markdownregistry.com/api/v1/resolve?ref=testland/qa/experiment-sdk-testing GET https://markdownregistry.com/api/v1/blob/c91d1b44bdd4c08ef0c84192da1ee5f3846f20516339de7970838031e0a1b684
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.