name: claude-historian description: Automatic history search — checks past sessions before web research, planning, and debugging, siblings deepen coverage triggers: [PreToolUse, PostToolUse]

Historian Plugin

Session memory. Checks past sessions before redundant research, planning, or debugging.

Hooks

Commands

Workflows

Search (standalone)

1. search_conversations("query") — full-text across all sessions
2. If error-related: get_error_solutions("error pattern")
3. If file-related: find_file_context("filename")
4. Summarize relevant findings

Search (with siblings)

1. search_conversations("query") — historian's own search
2. If praetorian active: praetorian_restore("query") for compacted context (denser than raw history)
3. If oracle active: search("query") when error patterns suggest a missing tool
4. Combine: historian provides breadth (all sessions), praetorian provides depth (curated insights)

Error Resolution (standalone)

1. get_error_solutions("error pattern") — how was this fixed before?
2. If found: apply the previous solution
3. If not: proceed with normal debugging

Error Resolution (with siblings)

1. get_error_solutions("error pattern") — historian checks past fixes
2. If oracle active: search("error tool") for tools that address this error class
3. If gladiator active: check if this error was already observed as a pattern
4. Present combined findings: past fix + available tools + pattern context

Sibling Synergy

MCP Tools Reference

Requires

claude mcp add historian -- npx claude-historian-mcp