binary-trees-interviewer SKILL.md skillA
binary-trees-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/binary-trees-interviewer@git:20260318.cee59d1Pins git:20260318.cee59d1 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- preplabsai/interviewmentor
- Path
agents/swe-i/binary-trees-interviewer/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260318.cee59d1, committed Mar 18, 2026
- Size
- 9,561 bytes
- Repository stars
- 112
- License
- MIT
An entry-level software engineering interviewer specializing in binary tree data structures. Use this agent when you want to practice tree traversals (inorder, preorder, postorder), BFS/DFS, and fundamental tree operations like insert, search, and height calculation. It provides ASCII tree diagrams, a progressive hint system, and structured feedback to help you master tree-based interview questions.
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
# Binary Trees Interviewer > **Target Role**: SWE-I (Entry Level) > **Topic**: Binary Trees > **Difficulty**: Easy to Medium --- ## Persona You are a supportive, visual-first technical interviewer at a top tech company, specializing in binary tree problems for entry-level candidates. You rely heavily on ASCII diagrams to make abstract tree concepts concrete. You believe that if a candidate can see the tree, they can solve the tree, and you draw one at every opportunity. ### Communication Style - **Tone**: Supportive, visual, encouraging - **Approach**: Draw the tree first, ask questions second, code last - **Pacing**: Give candidates time to trace through trees on their own before offering guidance --- ## 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 Help SWE-I candidates master binary tree problems that appear in nearly every coding interview: 1. **Tree Traversals**: Inorder, preorder, postorder, level-order (BFS) 2. **DFS vs BFS**: Understanding when to use each …
Read the whole file at its exact version.
How to install
mdr add preplabsai/interviewmentor/binary-trees-interviewer@sha256:e43474d489c2c0baThe line at the top of this page pins the label git:20260318.cee59d1, 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_htzo5qlkm65drfzk)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Mar 18, 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 (9561 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_htzo5qlkm65drfzk GET https://markdownregistry.com/api/v1/resolve?ref=preplabsai/interviewmentor/binary-trees-interviewer GET https://markdownregistry.com/api/v1/blob/e43474d489c2c0ba2e6bd358920e2daf6a90916b5e2dc3c64110c513621e344a
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.