Hk Follow Breadcrumb

What it does

When your agent uses it

• The user asks about how a flow works
• Where something happens in the code
• Test a specific area
• What files are involved in a feature

Example prompts

• “where does X happen”
• “how does Y work”
• “trace this”
• “/hk-follow-breadcrumb”

Requirements

• Pre-approved tools (allowed-tools): Read, Grep, Glob, Task, Bash

Workflow steps

4 steps, taken from the step headings in SKILL.md.

1. 1Load the index
2. 2Match the question to breadcrumbs
3. 3Present findings
4. 4Suggest breadcrumb creation for gaps

What it can do on your machine

Read from SKILL.md and the folder at commit 87305cd. It shows what the files ask for, not the result of running them.

• Tool permissions

  Pre-approves these tools, so the agent can use them without asking each time:

  • Read
  • Grep
  • Glob
  • Task
  • Bash

  From allowed-tools in the SKILL.md frontmatter.

• Runs code

  No scripts in the folder and no shell commands in SKILL.md.

  From the folder's file list and the shell code blocks in SKILL.md.

• Network

  No URLs in SKILL.md.

  From URLs in SKILL.md, links to its own repository left out.

• Credentials

  Names no API keys, tokens, secrets or passwords.

  From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Hk Follow Breadcrumb loads about 1.4k tokens when it runs. Until then it costs about 213 tokens; SKILL.md has 554 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it

~213

When it runs · the whole SKILL.md, loaded when a task matches

~1.4k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

• NotePre-approves every shell command (allowed-tools: Bash)SKILL.md

  allowed-tools: Read, Grep, Glob, Task, Bash

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from deepklarity/harness-kit at commit 87305cd, republished under its MIT licence (© deepklarity). 554 words, ~1,427 tokens.

name

hk-follow-breadcrumb

description

Consults existing breadcrumb analysis docs before exploring the codebase. Use this skill whenever the user asks about how a flow works, where something happens in the code, how to debug or test a specific area, what files are involved in a feature, or needs to understand the path data takes through the system. Also trigger when the user mentions 'where does X happen', 'how does Y work', 'trace this', 'what files handle Z', 'how to test this flow', 'debug this area', or when you're about to spawn multiple exploration subagents to understand a cross-cutting flow. Even if the user doesn't explicitly ask — if the task requires understanding how multiple layers connect (frontend → backend → worker → CLI), check breadcrumbs first. This is cheaper and more accurate than re-discovering the same information through code search.

allowed-tools

Read, Grep, Glob, Task, Bash

argument-hint

<what you're trying to understand, e.g. 'how does task execution work' or 'where do traces get ingested'>

The breadcrumb for <X> covers <these parts> of what you're asking about.
For <the uncovered parts>, I'll need to explore the code directly.

No existing breadcrumb covers this flow. I'll explore the code directly.
Consider running /hk-breadcrumb-creator afterward to document this flow for next time.

Based on the breadcrumb for <flow-name>:

<direct answer to their question, citing specific files/functions from the breadcrumb>

The key files involved are:
- `path/to/file.py` :: `function()` — <what it does in this context>
- `path/to/other.py` :: `other_func()` — <what it does>

<if debugging> Quick commands from the debug guide:
<relevant commands from DEBUG.md>

This flow isn't documented in breadcrumb analysis yet. Want me to create one?
Run /hk-breadcrumb-creator to trace and document it for future reference.

© deepklarity, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in .claude/skills/hk-follow-breadcrumb of deepklarity/harness-kit.

Open the folder on GitHubat commit 87305cd