synthesize

synthesize is a skill for Claude Code from tuan3w/obsidian-vault-agent. It costs 89 tokens per session (2,449 once invoked), scanned A, original, MIT.

A research and note-analysis tool for combining ideas from many notes in a personal knowledge vault. It looks for patterns, disagreements, missing information, and links between different subjects.

In plain words
What is it for?
Use it to prepare talks, essays, or decisions; examine a broad topic; connect ideas across fields; and identify contradictions or gaps in your notes.
Why use it?
It helps when the answer is spread across many notes instead of written in one place. It also challenges assumptions and highlights connections that are easy to miss.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Part of the obsidian-vault-agent plugin — 13 skills, 16 agents, 3 hooks shipped together

Good fit Use it to prepare talks, essays, or decisions; examine a broad topic; connect ideas across fields; and identify contradictions or gaps in your notes.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/tuan3w/obsidian-vault-agent/synthesize
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add tuan3w/obsidian-vault-agent --skill synthesize
Clone the repo
git clone --depth 1 https://github.com/tuan3w/obsidian-vault-agent

Made for: Claude Code.

Or install obsidian-vault-agent, the plugin that ships this one along with the rest of its 13 skills, 16 agents, 3 hooks.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for synthesize

README.md
[![agentmods](https://agentmods.dev/badge/skills/tuan3w/obsidian-vault-agent/synthesize/github.svg)](https://agentmods.dev/skills/tuan3w/obsidian-vault-agent/synthesize)
Your own site
<a href="https://agentmods.dev/skills/tuan3w/obsidian-vault-agent/synthesize"><img src="https://agentmods.dev/badge/skills/tuan3w/obsidian-vault-agent/synthesize/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for synthesize

Your own site · 80×15
<a href="https://agentmods.dev/skills/tuan3w/obsidian-vault-agent/synthesize"><img src="https://agentmods.dev/badge/skills/tuan3w/obsidian-vault-agent/synthesize.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 89 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,449 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00089 $0.02449
Opus 5 $0.00044 $0.01224
Sonnet 5 $0.00018 $0.00490
Haiku 4.5 $0.00009 $0.00245

Measured 11d ago against content hash 0ef8fc747ef5, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

synthesize scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 11d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/synthesize/SKILL.md · 253 lines

How it starts

The opening of the file, as written. The whole thing — 253 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Science grounding: far transfer (Tempel & Frings 2024), generation effect (McCurdy et al. 2020), elaborative interrogation, desirable difficulty (Bjork & Bjork 2020).

<Use_When>

  • User wants to understand what the vault collectively says about a concept
  • User is writing a Thought note and wants to pressure-test an idea
  • User is preparing a talk, essay, or decision and needs cross-domain ammunition
  • User says "synthesize X", "what do I know about X", "connect ideas about X"
  • User wants to find contradictions or gaps in their own thinking </Use_When>

<Do_Not_Use_When>

  • User wants to process a single source note — use /process instead
  • User wants spaced repetition review — use /recall instead
  • User has a specific paper to analyze — use /paper instead
  • Topic is too narrow to generate cross-domain connections (single paper, single event) </Do_Not_Use_When>

Stage 1: PARSE THE TOPIC

Extract the core concept(s) from the user's input. Identify:

  • Primary term: the exact word(s) to search (e.g., "attention", "loss aversion")
  • Synonyms / adjacent: related terms likely to appear in notes (e.g., "focus", "salience", "bias")
  • Domain anchors: which domains likely hold relevant notes (ML, psychology, design, startup...)

If the topic is ambiguous, briefly clarify before searching (one question max).

Stage 2: PARALLEL SEARCH — run ALL of these simultaneously

MCP search (preferred):

search_notes(query="PRIMARY TERM", limit=30)
search_notes(query="SYNONYM 1", limit=15)
search_notes(query="SYNONYM 2", limit=15)

Grep fallback (if MCP unavailable):

Grep(pattern="PRIMARY TERM", path="notes/", glob="*.md", output_mode="files_with_matches")
Grep(pattern="#TAG-NAME", path="notes/", glob="*.md", output_mode="files_with_matches")
Grep(pattern="\[\[.*PRIMARY TERM.*\]\]", path="notes/", glob="*.md", output_mode="files_with_matches")

Read the full file on GitHub · 253 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 11d ago First seen · 253 lines · 89 tokens per session scan A 0ef8fc747ef5

Subscribe to this mod's changes

synthesize is a skill published in the GitHub repository tuan3w/obsidian-vault-agent (39 stars, last pushed 5mo ago), licensed MIT. It adds 89 tokens to every session and 2,449 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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