api-chaos-runner SKILL.md skillA
api-chaos-runner 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/api-chaos-runner@git:20260726.19ddd36Pins git:20260726.19ddd36 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-api-testing/skills/api-chaos-runner/SKILL.md- Versions recorded
- 5
- Latest version
- git:20260726.19ddd36, committed Jul 26, 2026
- First version recorded
- Jul 6, 2026
- Size
- 11,374 bytes
- Repository stars
- 11
- License
- MIT
Runs the project's existing API tests under injected network chaos - latency, timeouts, dropped connections, bandwidth caps, packet loss - via Toxiproxy (notes on Pumba / Gremlin / LitmusChaos). Builds a per-scenario chaos matrix and reports which assertions break under which conditions, verifying resilience patterns (retry, circuit-breaker, timeout, fallback). Unlike schemathesis-fuzzing and restler-fuzzing, which generate new tests from a schema, this drives your EXISTING example-based suite.
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
# api-chaos-runner ## Overview Most API tests run against perfect networks: <1ms latency, no packet loss, infinite bandwidth, deterministic ordering. Real production isn't like that. **Network chaos testing** drives the existing tests under controlled network impairment - the team discovers which retry / circuit-breaker / timeout patterns actually hold up before real customers find out. The canonical open-source primitive is **Toxiproxy** - Shopify's "TCP proxy to simulate network and system conditions for chaos and resiliency testing" ([toxiproxy-readme][toxiproxy]). The pattern: sit Toxiproxy between client and upstream; manipulate **toxics** (latency, timeout, bandwidth, etc.) during test execution. [toxiproxy]: https://github.com/Shopify/toxiproxy This skill is **build-an-X** - the workflow chains the team's existing API tests (Postman / Karate / RestAssured / Tavern / Schemathesis) through a Toxiproxy-managed connection and orchestrates a per-scenario chaos matrix. ## When to use - The API has documented resilience requirements (retry on 5xx, circuit-break on 3 consecutive failures, timeout at 5s, etc.) and the team needs to **verify** them, not just document them. …
Read the whole file at its exact version.
How to install
mdr add testland/qa/api-chaos-runner@sha256:6ce7d6095e13d002The line at the top of this page pins the label git:20260726.19ddd36, 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_ytu4iuq6mrzypqaz)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Jul 6, 2026 and Jul 26, 2026, about one every 5 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260726.19ddd36 latest | 2026-07-26 | 19ddd36 | 11,374 B | A | view · diff |
| git:20260726.e26b0d9 | 2026-07-26 | e26b0d9 | 11,429 B | A | view · diff |
| git:20260724.d4db756 | 2026-07-24 | d4db756 | 11,418 B | A | view · diff |
| git:20260706.d9cec5f | 2026-07-06 | d9cec5f | 11,583 B | A | view · diff |
| git:20260706.4e1409c | 2026-07-06 | 4e1409c | 11,585 B | A | view |
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 (11374 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_ytu4iuq6mrzypqaz GET https://markdownregistry.com/api/v1/resolve?ref=testland/qa/api-chaos-runner GET https://markdownregistry.com/api/v1/blob/6ce7d6095e13d002e080d3f51c08228499077537fbbbe95ffa059446ad51fee4
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.