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.
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.
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 69,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).
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.
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.
For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.
Browse all General skills in the ClaudSkills registry, or explore these other picks from the same category:
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SKILL.md files, not affiliated with, endorsed by, or sponsored by Anthropic.