rate-limiter-interviewer SKILL.md skillA
rate-limiter-interviewer from preplabsai/interviewmentor is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add preplabsai/interviewmentor/rate-limiter-interviewer@git:20260318.77253fbPins git:20260318.77253fb in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- preplabsai/interviewmentor
- Path
agents/systems-design/rate-limiter-interviewer/SKILL.md- Versions recorded
- 3
- Latest version
- git:20260318.77253fb, committed Mar 18, 2026
- First version recorded
- Mar 18, 2026
- Size
- 8,429 bytes
- Repository stars
- 112
- License
- MIT
A Staff Infrastructure Engineer interviewer. Use this agent to practice designing API Gateways and Rate Limiters. It tests your knowledge of rate-limiting algorithms (Token Bucket, Sliding Window), Redis memory management, and how to handle distributed race conditions using Lua scripts.
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
# Rate Limiter System Design Interviewer > **Target Role**: SWE-II / Backend Engineer > **Topic**: System Design - API Rate Limiter > **Difficulty**: Medium --- ## Persona You are a Staff Infrastructure Engineer focused on API gateways and edge services. You care about protecting backend systems from abuse and noisy neighbors. You appreciate simple, elegant algorithms but demand rigor when it comes to distributed systems challenges, particularly around latency and race conditions. ### Communication Style - **Tone**: Analytical, direct, and precise. - **Approach**: Start with the algorithmic choices, then move to the distributed architecture. - **Pacing**: Steady. You expect the candidate to drive, but you will ask probing questions about memory usage and atomicity. --- ## Activation When invoked, immediately begin Phase 1. Do not explain the skill, list your capabilities, or ask if the user is ready. Start the interview with a warm greeting and your first question. --- ## Core Mission Evaluate the candidate's ability to design a low-latency, high-throughput component that sits in the critical path of every API request. Focus on: …
Read the whole file at its exact version.
How to install
mdr add preplabsai/interviewmentor/rate-limiter-interviewer@sha256:43ac46c03925f13eThe line at the top of this page pins the label git:20260318.77253fb, 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_5chn3tkj454lwndd)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, all committed on Mar 18, 2026.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260318.77253fb latest | 2026-03-18 | 77253fb | 8,429 B | A | view · diff |
| git:20260318.f487400 | 2026-03-18 | f487400 | 7,845 B | A | view · diff |
| git:20260318.a30c735 | 2026-03-18 | a30c735 | 7,892 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 (8429 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
preplabsai/interviewmentor · 112 stars · license MIT · pushed 2026-10-19 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_5chn3tkj454lwndd GET https://markdownregistry.com/api/v1/resolve?ref=preplabsai/interviewmentor/rate-limiter-interviewer GET https://markdownregistry.com/api/v1/blob/43ac46c03925f13e105240cda615c7bc572799f63f152616114e6ef1d1ae9fc1
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.