Synthèse Obsidian

description: Automatic synthesis - scans the vault for unnamed patterns and writes synthesis pages without being asked

category: thinking

triggers_en: ["synthesize", "auto-synthesis", "make synthesis notes", "find unnamed patterns"]

Use the obsidian-second-brain skill. Execute /obsidian-synthesize:

This command can run manually or as a scheduled agent. It thinks for you.

1. Read _CLAUDE.md first if it exists in the vault root
2. Read index.md to understand all existing pages
3. Read recent operation log: if Logs/ exists, read the last 2-3 Logs/YYYY-MM-DD.md files; otherwise read log.md (last 20 entries)

1. Scan for synthesis opportunities - spawn parallel subagents:

• Cross-source agent: read all sources ingested in the last 7 days (raw/). Find concepts that appear in 2+ unrelated sources. If the same idea shows up in a podcast transcript AND an article AND a daily note - that's a synthesis candidate.

• Entity convergence agent: scan wiki/entities/ for people who appear together in multiple contexts but have no explicit connection page. If Person A and Person B keep showing up in the same projects/decisions - write a connection note.

• Concept evolution agent: scan wiki/concepts/ for ideas that have been updated 3+ times. Track how the concept evolved - write a "Concept Evolution" section showing the timeline of how the user's thinking changed.

• Orphan rescue agent: find notes in wiki/ with no incoming links that contain claims or ideas that SHOULD be linked to existing pages. Create the missing links and explain why.

1. For each synthesis found:

• Create wiki/concepts/Synthesis — Title.md with:

     ---
     date: YYYY-MM-DD
     tags:
       - concept
       - synthesis
     auto_generated: true
     ---

• Document: what pattern was found, which sources/notes it came from (with links), what it means, and a suggested action
• Link the synthesis page FROM all the source notes it references

1. Update index.md with new synthesis pages
2. Append to the operation log: if Logs/ exists write **HH:MM** - synthesize | X synthesis pages created, Y orphans rescued, Z connections found to Logs/YYYY-MM-DD.md; otherwise append ## [YYYY-MM-DD] synthesize | X synthesis pages created, Y orphans rescued, Z connections found to log.md
3. If a daily note exists for today, add a Synthesis section with a brief summary

The vault should generate its own insights. Not just when asked - on its own schedule.

AI-first rule: Every note created or updated by this command MUST follow references/ai-first-rules.md - ## For future Claude preamble, rich frontmatter (type, date, tags, ai-first: true, plus type-specific fields), recency markers per external claim, mandatory [[wikilinks]] for every person/project/concept referenced, sources preserved verbatim with URLs inline, and confidence levels where applicable. The vault is for future-Claude retrieval - not human reading.

Anti-fabrication: Search exhaustively before claiming any note, person, or file is absent - false absence is the most common failure mode - and never invent facts, entities, or dates (mark unknowns as TBD). See the anti-fabrication and search-completeness hard rules in references/ai-first-rules.md.