memory-bridge

A cross-tool knowledge browser for an Obsidian wiki, letting a user browse and compare wiki pages by which AI tool originally produced them. It is triggered by invocations like /memory-bridge, "browse codex memory", "what did codex know about X", "show me claude knowledge", or "what does hermes know that claude doesn't". The wiki tracks source provenance in a .manifest.json file and in each page's sources: frontmatter, and this skill surfaces that metadata as a navigable view. Its standout capability is diff mode, which reveals blind spots and knowledge gaps between tools that the user may not know exist.

Before running, it resolves configuration to find OBSIDIAN_VAULT_PATH, then reads .manifest.json as the source of truth for which tool produced which pages and index.md for page titles and descriptions. It parses each source entry's source_type into a canonical tool name, mapping variants like claude_conversation, codex_rollout, hermes_memory, openclaw_daily_note, copilot_session, pi_session, document (ingest), and anything else (manual), and builds a map from each tool to the set of pages it created or updated, allowing a page to belong to multiple tools.

It supports five modes: browse (list all pages from a tool), search (pages from a tool mentioning a topic), diff (pages unique to each tool, overlap, and notable gaps, optionally between two named tools), and map (a full page-by-tool origin matrix, capped and sorted by cross-tool richness). Diff computes only_in_a, only_in_b, and shared sets and explicitly calls out the most surprising asymmetry. To stay efficient it reads only frontmatter unless the user asks for more. After producing output it optionally spawns an impl-validator subagent to sanity-check parsing and diff symmetry, and appends a line to the vault's log.md. Use it to explore what each AI tool has and hasn't contributed to your knowledge base.