CtrlK
BlogDocsLog inGet started
Tessl Logo

testland/jepsen-patterns

Reference for Jepsen-style distributed-systems testing - consistency models hierarchy (linearizability vs sequential vs causal vs monotonic-reads vs eventual), nemesis primitives (network partitions, clock skew, kill nodes), workload generators, Knossos + Elle linearizability checkers. Reference-only because Jepsen tests are typically Clojure-bespoke per system; use this skill to evaluate vendor claims and structure your own test. Use when a datastore vendor advertises a consistency guarantee that has to be checked before adoption, when reading a published Jepsen report for gaps, or when a custom replicated store needs its own consistency test scoped.

79

Quality

99%

Does it follow best practices?

Run evals on this skill

Adds up to 20 points to the overall score

View guide

SecuritybySnyk

Passed

No findings from the security scan

Overview
Quality
Evals
Security
Files

Quality

Content

100%

Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.

A lean, well-organized reference skill that delivers concrete models, nemeses, checkers, and workloads via efficient tables, with a clear sequenced workflow and an explicit error-recovery feedback loop. Organization is clean and self-contained with no need for bundle files.

DimensionReasoningScore

Conciseness

Token-dense and reference-oriented; it assumes Claude's competence (no primer on what databases or partitions are) and uses compact tables to convey models, nemeses, checkers, and workloads. Every section earns its place.

3 / 3

Actionability

Provides concrete, executable material: a real Clojure generator snippet, named checkers (Knossos/Elle) with what they detect, specific vendor-report red-flag phrases, and a numbered scoping recipe. Instructions are specific rather than abstract.

3 / 3

Workflow Clarity

A clearly sequenced 7-step process; Step 7 includes an explicit feedback loop ('Counterexamples -> fix. Re-run. Add to CI suite') and validation-style checkpoints, and the Anti-patterns table reinforces correct sequencing.

3 / 3

Progressive Disclosure

No bundle files exist, so scoring reflects the body's organization: well-structured sections (When to use, Steps 1-7, Anti-patterns, Limitations, References) with a single-level external link and pointers to two related skills. The reference tables belong inline and the content is appropriately organized for a self-contained reference skill.

3 / 3

Total

12

/

12

Passed

Description

100%

Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.

A strong, specific description that names concrete capabilities and gives explicit, natural trigger conditions in third person. It cleanly answers both what the skill does and when to invoke it.

DimensionReasoningScore

Specificity

Lists multiple concrete capabilities: 'consistency models hierarchy (linearizability vs sequential vs causal vs monotonic-reads vs eventual), nemesis primitives (network partitions, clock skew, kill nodes), workload generators, Knossos + Elle linearizability checkers', plus 'evaluate vendor claims and structure your own test'.

3 / 3

Completeness

Explicitly answers what ('Reference for Jepsen-style distributed-systems testing' with enumerated capabilities) and when via an explicit 'Use when...' clause listing three distinct triggering scenarios.

3 / 3

Trigger Term Quality

Natural trigger phrasing a practitioner would say: 'vendor advertises a consistency guarantee that has to be checked before adoption', 'reading a published Jepsen report for gaps', and 'a custom replicated store needs its own consistency test scoped', with terms like 'Jepsen', 'linearizability', and 'consistency guarantee'.

3 / 3

Distinctiveness Conflict Risk

Occupies a clear niche (Jepsen-style distributed-systems consistency testing) with highly specific triggers unlikely to fire for unrelated skills.

3 / 3

Total

12

/

12

Passed

Validation

93%

Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.

Validation15 / 16 Passed

Validation for skill structure

CriteriaDescriptionResult

metadata_version

'metadata.version' is missing

Warning

Total

15

/

16

Passed

Reviewed

Table of Contents