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Search Lossless Corpus

Category: General  ·  Sub-category: research-misc  ·  Last updated:
ai:claude
Use whenever the user asks a question that prior work might already have answered — "what did we decide about X", "when did we ship X", "why did we choose X over Y", "has this failed before", "where did we put X" — and generally to ground answers in The Lossless Group's own corpus instead of training-data folklore. Encodes the four local Chroma collections (`context-vigilance-corpus`, `lossless-changelog`, `claude-code-sessions`, `claude-code-tool-traces`) reachable via the `chroma` MCP server, the four-step agentic-search loop (decompose → execute → evaluate → synthesize), the citation discipline (source path + timestamp + repo slug for every claim), and the metadata-filter patterns that make queries precise. Triggers on questions about prior decisions, shipped work, past Claude Code sessions, recurring tool failures, or any "did we already…" framing. Does not cover Chroma setup, ingestion pipelines, or maintenance — those are handled by [[chroma-local]] and the [[context-vigilance-kit]] scripts.
Security AStatic scan found no risk patternsHow grading works ›

From the source SKILL.md

The Lossless Group keeps a living corpus of its own decisions, shipped work, prior sessions, and tool-failure history in a local Chroma database wired into Claude Code via the chroma MCP server. Most questions a user asks about prior work can be answered from this corpus rather than training data. Don't paraphrase from training data when the corpus could answer.

What this skill does

Search Lossless Corpus is a community-contributed Claude Code skill in the research-misc sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/search-lossless-corpus/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use whenever the user asks a question that prior work might already have answered — "what did we decide about X", "when did we ship X", "why did we choose X over Y", "has this failed before", "where did we put X" — and generally to ground answers in The Lossless Group's own corpus instead of training-data folklore. Encodes the four local Chroma collections (`context-vigilance-corpus`, `lossless-changelog`, `claude-code-sessions`, `claude-code-tool-traces`) reachable via the `chroma` MCP server, the four-step agentic-search loop (decompose → execute → evaluate → synthesize), the citation discipline (source path + timestamp + repo slug for every claim), and the metadata-filter patterns that make queries precise.

Who uses this skill

The Search Lossless Corpus Claude Code skill is built for Claude Code users and developers across all disciplines looking for general-purpose AI assistance. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 186,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/search-lossless-corpus
curl -L https://claudskills.com/skills/search-lossless-corpus/SKILL.md \
  -o ~/.claude/skills/search-lossless-corpus/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/search-lossless-corpus/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/search-lossless-corpus/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\search-lossless-corpus\SKILL.md on Windows. See the full install guide for step-by-step instructions.

Telegram

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

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See pricing → Download desktop app

Frequently asked questions

How do I install the Search Lossless Corpus Claude Code skill?
Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/search-lossless-corpus/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.
What does the Search Lossless Corpus skill do?
Use whenever the user asks a question that prior work might already have answered — "what did we decide about X", "when did we ship X", "why did we choose X over Y", "has this failed before", "where did we put X" — and generally to ground answers in The Lossless Group's own corpus instead of training-data folklore. Encodes the four local Chroma collections (`context-vigilance-corpus`, `lossless-changelog`, `claude-code-sessions`, `claude-code-tool-traces`) reachable via the `chroma` MCP server, the four-step agentic-search loop (decompose → execute → evaluate → synthesize), the citation discipline (source path + timestamp + repo slug for every claim), and the metadata-filter patterns that make queries precise. Triggers on questions about prior decisions, shipped work, past Claude Code sessions, recurring tool failures, or any "did we already…" framing. Does not cover Chroma setup, ingestion pipelines, or maintenance — those are handled by [[chroma-local]] and the [[context-vigilance-kit]] scripts.
Is this skill free to install?
Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.
When should I use the Search Lossless Corpus skill?
Use Search Lossless Corpus when your Claude Code task falls under the General category — specifically in the research misc area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Search Lossless Corpus" or describe the task and let Claude pick). Browse related skills at /category/general/.
What is a Claude Code skill and how does the Search Lossless Corpus skill fit in?
A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Search Lossless Corpus is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the General category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA
lossless-group. (2026). Search Lossless Corpus [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/search-lossless-corpus/
BibTeX
@misc{search-lossless-corpus-2026,
  author    = {lossless-group},
  title     = {Search Lossless Corpus [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/search-lossless-corpus/}
}

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Security scan

Grade A · scanned 2026-08-15 — free static scan against the OWASP Agentic Skills Top 10.

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