wiki-agent
ar9av/obsidian-wiki
Query-driven cross-agent history search: pull specific topics from Claude, Codex, Hermes, OpenClaw, Copilot, or Pi into your current session.
What is wiki-agent?
Wiki Agent performs targeted ingest from a specific AI agent's conversation history based on a query or topic. Use it when working in one agent and need to reference how you solved something in another agent's past sessions. It finds relevant sessions, extracts the key context, and synthesizes an answer immediately usable in your current work.
- Query-driven session search across six AI agents (Claude, Codex, Hermes, OpenClaw, Copilot, Pi)
- Extracts only relevant conversation blobs matching your topic, not entire session files
- Scores sessions by name/title match, working directory, and recency with 90-day decay
- Synthesizes extracted context into a usable answer for immediate application
- Tracks already-ingested sessions to avoid duplication
- Defaults to recent sessions mode if no query is provided
How to install wiki-agent
npx skills add https://github.com/ar9av/obsidian-wiki --skill wiki-agent- Obsidian vault with llm-wiki skill installed
- At least one target agent (Claude, Codex, Hermes, OpenClaw, Copilot, or Pi) with existing conversation history on the machine
- `.env` file or global config with `OBSIDIAN_VAULT_PATH` set (or use inline `@name` override)
- Optional: custom history paths via `CLAUDE_HISTORY_PATH`, `CODEX_HISTORY_PATH`, `HERMES_HOME`, `OPENCLAW_HOME`, `COPILOT_HISTORY_PATH`, or `PI_HISTORY_PATH` in `.env`
How to use wiki-agent
- 1.Invoke the skill with `/wiki-<agent> [query]` where agent is claude, codex, hermes, openclaw, copilot, or pi
- 2.Provide an optional search topic (e.g., `/wiki-claude "auth middleware setup"`) or omit it for recent sessions mode
- 3.The skill locates the target agent's history root and builds a session inventory
- 4.Sessions are scored by name/title match, working directory relevance, and recency decay
- 5.Top 3–5 matching sessions are opened and relevant content is extracted
- 6.Extracted context is synthesized into a natural-language answer ready to use in your current session
Use cases
- Working in Claude Code and need to recall how you implemented auth middleware in Codex
- Searching Hermes history for a specific memory architecture pattern you designed
- Pulling in test strategy details from a Copilot chat session into your current Claude session
- Finding how you refactored a module in Pi agent and applying the same approach elsewhere
- Reviewing your approach to project planning from OpenClaw history while working in a different agent
- Multi-agent developers who switch between Claude, Codex, Hermes, OpenClaw, Copilot, and Pi
- Teams using multiple AI coding agents and needing cross-reference capability
- Developers who want to reuse solutions from past sessions without manual searching
- Anyone maintaining institutional knowledge across multiple agent conversations
wiki-agent FAQ
wiki-history-ingest bulk-ingests all new sessions from all agents into your wiki. wiki-agent is targeted: you specify one agent and optionally a topic, and it pulls only relevant sessions, extracts the specific context, and returns a synthesized answer immediately.
The skill defaults to recent sessions mode: it ingests the last 5 unprocessed sessions from that agent and returns a summary of what was found.
Sessions are scored by name/title match (+3), working directory match (+2), and recency (90-day exponential decay). The top 3–5 sessions by score are selected. Already-ingested sessions are flagged but still shown if they match.
The skill reads from the agent history paths on the current machine. You can override default paths with environment variables (`CLAUDE_HISTORY_PATH`, `CODEX_HISTORY_PATH`, etc.) in `.env` to point to custom locations.
Each agent stores history differently: Claude uses JSONL conversations, Codex uses rollout JSONL, Hermes uses markdown memories and JSONL sessions, OpenClaw uses structured memory markdown and JSONL, Copilot uses JSONL sessions, and Pi uses JSONL in timestamped directories. The skill handles extraction from all formats.
Full instructions (SKILL.md)
Source of truth, from ar9av/obsidian-wiki.
name: wiki-agent description: > Query-driven targeted ingest from a specific AI agent's raw history. Use this skill when the user invokes /wiki-claude, /wiki-codex, /wiki-hermes, /wiki-openclaw, /wiki-copilot, /wiki-pi — with or without a search topic. Different from wiki-history-ingest (which bulk-ingests everything new): this skill finds sessions about a SPECIFIC TOPIC in a specific agent's history and ingests just those, then returns a synthesized answer immediately usable in the current session. Primary use case: you're working in agent A and want to pull in how you solved X in agent B's history. Cross-referencing, not archiving. Also trigger on: "what did I work on in codex about X", "search my claude sessions for Y", "pull in hermes knowledge about Z", "find that conversation where I did X in codex".
Wiki Agent — Targeted Cross-Agent History Search + Ingest
You are doing a query-driven targeted ingest from one specific AI agent's raw conversation history. The user is typically working in a different agent right now and wants to pull in context from another agent's past sessions.
This is not bulk ingest. You find sessions about a specific topic, extract the relevant blobs, distill them into the wiki, and return a synthesized answer the user can act on immediately.
Command Routing
Parse the invocation to determine the target agent and optional query:
| Command | Target | Example |
|---|---|---|
/wiki-claude [query] | Claude Code history | /wiki-claude "how did I set up auth middleware" |
/wiki-codex [query] | Codex CLI history | /wiki-codex "rust ownership patterns" |
/wiki-hermes [query] | Hermes agent history | /wiki-hermes "memory architecture" |
/wiki-openclaw [query] | OpenClaw history | /wiki-openclaw "project planning approach" |
/wiki-copilot [query] | Copilot chat history | /wiki-copilot "test strategy for API routes" |
/wiki-pi [query] | Pi agent history | /wiki-pi "how did I refactor the auth module" |
If no query is given, default to recent sessions mode: ingest the last 5 unprocessed sessions from that agent and return a summary of what was found. This is equivalent to a focused wiki-history-ingest for that agent only.
Before You Start
Writing profile: Before drafting or rewriting natural-language Markdown, read and apply the Writing Profile Resolution section in llm-wiki/SKILL.md. Framework schema, provenance, safety, and operation-specific requirements take precedence.
WRITING.md preferences apply only to newly drafted or rewritten natural-language Markdown; preserve source content and structured records.
- Resolve config — follow the Config Resolution Protocol in
llm-wiki/SKILL.md(inline@nameoverride → walk up CWD for.env→ global config → prompt setup). This givesOBSIDIAN_VAULT_PATH. - Read
$OBSIDIAN_VAULT_PATH/.manifest.json→ know what's already ingested. - Read
$OBSIDIAN_VAULT_PATH/hot.mdif it exists → warm context on recent wiki activity.
Step 1: Locate the Agent's History Root
| Agent | Default path | Config override |
|---|---|---|
claude | ~/.claude + ~/Library/Application Support/Claude/local-agent-mode-sessions/ | CLAUDE_HISTORY_PATH in .env |
codex | ~/.codex | CODEX_HISTORY_PATH in .env |
hermes | ~/.hermes | HERMES_HOME in env or .env |
openclaw | ~/.openclaw | OPENCLAW_HOME in .env |
copilot | ~/.copilot | COPILOT_HISTORY_PATH in .env |
pi | ~/.pi/agent/sessions | PI_HISTORY_PATH in .env |
If the history root doesn't exist, stop and tell the user: "No <agent> history found at <path>. Have you run <agent> on this machine? You can set a custom path with <CONFIG_VAR> in .env."
Step 2: Build Session Inventory
Use the cheapest index source for each agent — don't open session files until you know which ones are relevant.
Claude
Primary index: ~/.claude/projects/ (directories = projects, files = sessions)
Session files: ~/.claude/projects/*/*.jsonl
Desktop index: find ~/Library/Application Support/Claude/local-agent-mode-sessions -name "local_*.json"
Signal fields: sessionId, cwd, startedAt, title (in local_*.json)
Build a list of sessions: {path, project_dir, modified_at, already_ingested}.
Codex
Primary index: ~/.codex/session_index.jsonl
Session files: ~/.codex/sessions/**/rollout-*.jsonl
Signal fields: thread_id, name/title, updated_at (in session_index.jsonl)
Read session_index.jsonl as the inventory. Each line: {thread_id, name, updated_at}. Map thread IDs to rollout files by matching directory names.
Hermes
Primary index: ~/.hermes/memories/*.md (fast to scan)
Session files: ~/.hermes/sessions/**/*.jsonl
Signal fields: file names, memory titles, first 3 lines of each memory
Scan memory filenames first (they're often titled by topic). Fall back to session listing.
OpenClaw
Primary index: ~/.openclaw/workspace/memory/MEMORY.md (structured long-term memory)
Daily notes: ~/.openclaw/workspace/memory/YYYY-MM-DD.md
Session index: ~/.openclaw/agents/*/sessions/sessions.json
Session files: ~/.openclaw/agents/*/sessions/*.jsonl
Read MEMORY.md sections first — it's the pre-compiled summary of everything. Daily notes give recency signal.
Copilot
Primary index: session filenames / directory listing
Session files: varies by client (VS Code: ~/.copilot/sessions/*.jsonl or similar)
Signal fields: session timestamps, file names
Pi
Primary index: ~/.pi/agent/sessions/--<cwd>--/ directories
Session files: ~/.pi/agent/sessions/--<cwd>--/<timestamp>_<uuid>.jsonl
Signal fields: cwd (decoded from dir name), session_info.name, timestamp in filename
Scan session directories first. Decode --<cwd>-- to get the working directory. Read the first line (session header) and any session_info entries for the session name. No separate index file — the filesystem is the index.
Step 3: Score Sessions Against the Query
If a query was given, score each session in the inventory without opening full session files:
-
Name/title match — does the session name or thread title contain the query terms? Score: +3
-
CWD/project match — does the working directory suggest the right project? Score: +2
-
Recency — apply exponential time decay with a 90-day half-life, as a multiplier on the match score rather than a bonus added to it:
base = name_match(3) + cwd_match(2) score = base * (0.35 + 0.65 * 0.5 ** (age_days / 90))The 0.35 floor is deliberate: an old session that matches the query exactly must still outrank a recent one that barely matches, or the skill can never answer "how did I first solve this?". This is the same decay
session-brainuses, so the two skills rank consistently. -
Already ingested — if this session was previously ingested and the wiki page already covers the query (check
hot.md+index.md), flag as "covered" but still show in results
Select the top 3–5 sessions by score. If no query was given, select the 5 most recent unprocessed sessions.
Step 4: Extract the Relevant Blob
Open each selected session file and extract only the content relevant to the query. Do not read the full session if it's large — use targeted extraction.
Per-Agent Extraction Strategy
Claude (JSONL conversation):
- Each line:
{role, content, timestamp, ...} - Search with:
rg -i "<query terms>" <session.jsonl>to find the relevant lines - Extract: the surrounding conversation window (10 lines before + 20 lines after each hit)
- Special signal: tool calls (Read/Write/Bash/Edit) reveal what was actually done — extract these even without keyword matches if they're in the relevant window
Codex (rollout JSONL):
- Each line:
{type: "session_meta|turn_context|event_msg|response_item", ...} - Filter to
type: "event_msg"(user turns) andtype: "response_item"(model output) - Search with:
rg -i "<query terms>" <rollout.jsonl> - Extract: matching turns + their parent context (the
turn_contextpreceding the match) - Skip:
session_metaevents (operational metadata, not knowledge)
Hermes (memory files + session JSONL):
- For memory files: read the full file (they're short — typically <500 words each)
- For session JSONL:
rg -i "<query terms>"+ surrounding window - Memory files with title matches → read fully; others → grep only
OpenClaw (MEMORY.md + daily notes + session JSONL):
MEMORY.md: grep for section headers containing query terms → extract that section- Daily notes: grep most recent 30 days for query terms → extract matching paragraphs
- Session JSONL: same grep-window approach as Claude
- Prefer MEMORY.md/daily notes over session JSONL (they're pre-synthesized)
Copilot (session JSONL):
- Same grep-window approach as Claude
- Look for checkpoint files if available (pre-summarized)
Pi (structured JSONL with tree layout):
- Each line is a tree entry:
{type, id, parentId, timestamp, message?, ...} - Build the active branch: map entries by
id, find leaf (last entry with no children), walkparentIdto root - Search with:
rg -i "<query terms>" <session.jsonl>to find matching entries - Extract: the matching entries + their ancestors on the active branch (follow parent chain)
- Special signal:
toolCallblocks inside assistant messages reveal what was actually done — extract these even without keyword matches if they're in the relevant window - Prefer
compactionandbranch_summaryentries when available — they're pre-synthesized summaries - Skip
thinkingcontent blocks (noise) andmodel_change/thinking_level_changeentries
Step 5: Distill Blobs into Wiki Pages
For each extracted blob, determine where it belongs in the wiki:
- Check if a wiki page already covers this — grep
index.mdand page frontmatter for the topic. If yes, update the existing page rather than creating a new one. - Determine category using standard rules (from
llm-wiki/SKILL.md):- Technique / how-to →
skills/ - Abstract concept / pattern →
concepts/ - Tool / library / person →
entities/ - Cross-cutting insight →
synthesis/
- Technique / how-to →
- Write or update the page with required frontmatter:
Set--- title: <topic> category: skill|concept|entity|synthesis tags: [tag1, tag2] sources: [<agent>://<path/to/session>] created: <date> updated: <date> confidence: high|medium|low lifecycle: stable|draft ---sourceswith the agent prefix somemory-bridgecan find it later. - Add cross-links to related wiki pages found in
index.md.
Distillation rules (same as all ingest skills):
- Extract durable knowledge, not operational telemetry
- One wiki page per concept, not one per session
- Merge into existing pages rather than duplicating
- Keep the signal: decisions made, patterns discovered, techniques that worked, bugs explained
Step 6: Return Synthesized Answer
After ingesting, immediately synthesize and return an answer from the newly ingested + existing wiki content:
## From <agent> history: "<query>"
**Found in:** <N> sessions (<session names/titles>)
**Key insights:**
<Synthesized answer — 3–5 bullet points of the most useful knowledge>
**Wiki pages updated/created:**
- [[page-name]] — <what was added>
- [[page-name]] — <what was added>
**Sessions ingested:**
| Session | Date | Relevance |
|---------|------|-----------|
| <name> | <date> | <one-line why it was selected> |
**Gaps:** <What the sessions didn't cover that might be relevant>
If a query was given but no relevant sessions were found, say so explicitly: "No sessions about '<query>' found in <agent> history. The most recent sessions covered: <list topics from last 3 sessions>."
Step 7: Update Tracking Files
Update .manifest.json for each session file processed:
{
"<path>": {
"ingested_at": "<now>",
"source_type": "<agent>_conversation",
"modified_at": "<file mtime>",
"pages_created": [...],
"pages_updated": [...]
}
}
One locked call updates the log, the index, and the hot cache:
obsidian-wiki memory sync WIKI-AGENT \
agent=<agent> query="<query>" \
sessions_searched=<N> sessions_ingested=<M> \
pages_created=<X> pages_updated=<Y> \
--takeaways "<one line: what was pulled in and what it changes>"
Never hand-edit index.md, log.md, or hot.md — the command takes the lock that keeps a parallel writer from dropping your update.
See .skills/llm-wiki/references/MEMORY.md for the full procedure.
Cross-Agent Use Patterns
These are the primary use cases this skill is designed for:
"I'm on Codex. What did I figure out about X in Claude?"
→ /wiki-claude "X" — finds Claude sessions about X, ingests them, returns the answer
"I solved a bug in Hermes last week. I need that context now in Claude Code."
→ /wiki-hermes "bug description" — surfaces and ingests the Hermes session
"What are all the approaches I've tried for X across all my tools?"
→ Run /wiki-claude "X", /wiki-codex "X", /wiki-hermes "X" in sequence — each ingests its slice, the wiki accumulates the cross-agent picture, then /memory-bridge diff shows what each tool uniquely contributed
No query — just "catch me up on recent Codex work"
→ /wiki-codex — ingests last 5 Codex sessions and returns a summary
"I'm on Claude Code. What did I figure out about X in Pi?"
→ /wiki-pi "X" — finds Pi sessions about X, ingests them, returns the answer
No query — just "catch me up on recent Pi work"
→ /wiki-pi — ingests last 5 Pi sessions and returns a summary
QMD Refresh After Vault Writes
QMD is a search index, not the source of truth. If $QMD_WIKI_COLLECTION is empty or unset, skip this step. Run it only after this skill has written or rewritten vault markdown. If QMD refresh fails, do not roll back the vault changes; report the QMD status separately.
Use $QMD_CLI if set; otherwise use qmd.
${QMD_CLI:-qmd} update
If the output says vectors are needed or embeddings may be stale, run:
${QMD_CLI:-qmd} embed
Verify the collection with either:
${QMD_CLI:-qmd} ls "$QMD_WIKI_COLLECTION"
or, when a specific page path is known:
${QMD_CLI:-qmd} get "qmd://$QMD_WIKI_COLLECTION/<page>.md" -l 5
Record one of:
QMD refreshed: update + embed + verifiedQMD refreshed: update only + verifiedQMD skipped: QMD_WIKI_COLLECTION unsetQMD skipped: qmd CLI unavailableQMD failed: <short error summary>
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