Piebald-AI

claude-code-system-prompts

JavaScript2025–2026

Piebald-AI / claude-code-system-prompts

claude-code-system-prompts

All parts of Claude Code's system prompt, 27 builtin tool descriptions, sub agent prompts (Plan/Explore/Task), utility prompts (CLAUDE.md, compact, statusline, magic docs, WebFetch, Bash cmd, security review, agent creation). Updated for each Claude Code version.

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16Distinct people

18Mentions

0Explicit recommenders

13.1KGitHub stars

REPOSITORY AT A GLANCE

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This week on Hacker News

Nov 8–Nov 15 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/15/2026, 7:02:26 AM UTC.

No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.

Mentions over time

HN mentions by month18 dated mentions

Observed mentions: 2025-12-29 20:39:38 UTC to 2026-10-31 21:24:13 UTC.

Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.

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Period	Start (UTC)	End (exclusive, UTC)	Mentions	Submissions	Comments
Dec 2025	2025-12-01 00:00:00 UTC	2026-01-01 00:00:00 UTC	1	0	1
Jan 2026	2026-01-01 00:00:00 UTC	2026-02-01 00:00:00 UTC	0	0	0
Feb 2026	2026-02-01 00:00:00 UTC	2026-03-01 00:00:00 UTC	0	0	0
Mar 2026	2026-03-01 00:00:00 UTC	2026-04-01 00:00:00 UTC	7	0	7
Apr 2026	2026-04-01 00:00:00 UTC	2026-05-01 00:00:00 UTC	2	0	2
May 2026	2026-05-01 00:00:00 UTC	2026-06-01 00:00:00 UTC	2	0	2
Jun 2026	2026-06-01 00:00:00 UTC	2026-07-01 00:00:00 UTC	0	0	0
Jul 2026	2026-07-01 00:00:00 UTC	2026-08-01 00:00:00 UTC	1	1	0
Aug 2026	2026-08-01 00:00:00 UTC	2026-09-01 00:00:00 UTC	3	1	2
Sep 2026	2026-09-01 00:00:00 UTC	2026-10-01 00:00:00 UTC	0	0	0
Oct 2026	2026-10-01 00:00:00 UTC	2026-11-01 00:00:00 UTC	2	0	2

What Hacker News says

7 sources

verdverm·Mar 31, 2026

I originally took my prompts from Claude Code≈ (https://github.com/Piebald-AI/claude-code-system-prompts)https://github.com/Piebald-AI/claude-code-system-prompts and subsequently edited them to remove guardrails and and output formatting like this post. I too included the last bit about user prompts overriding system prompt, but like any good LLM, it doesn't always follow instructions.

In Universal Claude.md – cut Claude output tokens

verdverm·Mar 31, 2026

LSP has many more "functions" that are useful to agents, such as rename and get definition/usage. Some basic differences described here: https://news.ycombinator.com/item?id=30664671 More in depth: https://lambdaland.org/posts/2026-01-21_tree-sitter_vs_lsp/ Claude Code's instructions for LSP: https://github.com/Piebald-AI/claude-code-system-prompts/blo... I'm not convinced that ASTs are meaningfully helpful in the grand scheme and the long-run. LSPs and code intelligence I find useful as a human and for my coding agent.

In [dead]

skeledrew·Mar 14, 2026

> Except the system prompt that gets prepended to your own prompt is part of the black box, and obviously should be expected to change over time You may want to review that statement. https://github.com/Piebald-AI/claude-code-system-prompts

In Please Do Not A/B Test My Workflow

JSR_FDED·Mar 13, 2026

This is the prompt that Claude Code adds when you use /btw https://github.com/Piebald-AI/claude-code-system-prompts/blo...

In Shall I implement it? No

verdverm·Mar 12, 2026

Yes, very much so. I've been able to get Gemini flash to be nearly as good as pro with the CC prompts. 1/10 the price 1/10 the cycle time. I find waiting 30s for the next turn painful now https://github.com/Piebald-AI/claude-code-system-prompts One nice bonus to doing this is that you can remove the guardrail statements that take attention.

In Shall I implement it? No

its-summertime·Mar 2, 2026

https://github.com/Piebald-AI/claude-code-system-prompts/blo... They seem to use XML-esque tags here in the first prompt I looked at

In Why XML tags are so fundamental to Claude

arbirk·Mar 2, 2026

If this is true, the why does Claude Code's own system prompt not use this style? https://github.com/Piebald-AI/claude-code-system-prompts/tre...

In Why XML tags are so fundamental to Claude