hunt-a-handle SKILL.md skillA

hunt-a-handle from tonydzi/second-brain-starter-kit is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add tonydzi/second-brain-starter-kit/hunt-a-handle@git:20261020.402f6b7

Pins git:20261020.402f6b7 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
tonydzi/second-brain-starter-kit
Path
skills/hunt-a-handle/SKILL.md
Versions recorded
4
Latest version
git:20261020.402f6b7, committed Oct 20, 2026
First version recorded
Sep 24, 2026
Size
10,795 bytes
Repository stars
14
License
MIT

- Enumerate a username across hundreds of platforms with sherlock, maigret and WhatsMyName, then correlate and confirm which accounts genuinely belong to the same person.

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

# Hunt a handle

Handle reuse is the cheapest strong link in OSINT: one string, checked in
minutes, potentially tying a dozen platforms to one person. It is also the most
over-trusted. Enumerators do not verify identity — they perform HTTP existence
checks — and a hit list is a list of *candidates*, nothing more. The mistake
that ruins these investigations is pasting the tool's output into the report.
Enumeration is the cheap half; confirmation is the work.

## Step 1 — Authorized scope

Read [../../ETHICS.md](../../ETHICS.md) and write down, before any query:
subject, objective, in-bounds selectors, out-of-bounds actions (logging in,
contacting, requesting follows), and the governing jurisdiction. Handle hunting
drifts easily — one run hands you thirty new platforms, and it is trivial to end
up profiling an uninvolved person who shares the string.

**Done when** scope is written down and you can name what would put you out of
bounds.

## Step 2 — Pick your enumerator

| Holding | Reach for | Why |
|---|---|---|
| One handle, need breadth fast | `sherlock` | Largest quick sweep, existence only |
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add tonydzi/second-brain-starter-kit/hunt-a-handle@sha256:76c7a8ba7ad80569

The line at the top of this page pins the label git:20261020.402f6b7, 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.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_j74z2ulkdyt3yews.svg)](https://markdownregistry.com/a/art_j74z2ulkdyt3yews)

2 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 4 versions of this file, between Sep 24, 2026 and Oct 20, 2026, about one every 9 days.

versioncommittedcommitsizeaudit
git:20261020.402f6b7 latest2026-10-20 402f6b7 10,795 BA view · diff
git:20261007.cd6c2082026-10-07 cd6c208 10,801 BA view · diff
git:20261003.a2d662f2026-10-03 a2d662f 10,802 BA view · diff
git:20260924.2784cb22026-09-24 2784cb2 9,687 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (10795 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

GitHub

tonydzi/second-brain-starter-kit · 14 stars · license MIT · pushed 2026-11-06 · branch master

API

GET https://markdownregistry.com/api/v1/artifacts/art_j74z2ulkdyt3yews
GET https://markdownregistry.com/api/v1/resolve?ref=tonydzi/second-brain-starter-kit/hunt-a-handle
GET https://markdownregistry.com/api/v1/blob/76c7a8ba7ad80569fc2b607daa41a6327957f91690c83128396b631eabe86c55

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.

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