synthesis

synthesis is a skill for Claude Code from NatsuFox/Tapestry. It costs 40 tokens per session (3,228 once invoked), scanned A, original, MIT.

A knowledge-base analysis workflow for interpreting saved web pages or notes and combining several sources into organized research notes. It is intended for reasoning after the source material has already been captured.

In plain words
What is it for?
Use it to synthesize saved sources, extract insights, consolidate research, and organize notes into a knowledge base.
Why use it?
It keeps source collection separate from interpretation, so analysis starts with structured material rather than unfinished imports.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: $skill-name invocation.

Part of the Tapestry plugin — 9 skills shipped together

Good fit Use it to synthesize saved sources, extract insights, consolidate research, and organize notes into a knowledge base.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/natsufox/tapestry/synthesis
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 NatsuFox/Tapestry --skill synthesis
Clone the repo
git clone --depth 1 https://github.com/NatsuFox/Tapestry

Made for: Claude Code.

Or install Tapestry, the plugin that ships this one along with the rest of its 9 skills.

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 synthesis

README.md
[![agentmods](https://agentmods.dev/badge/skills/natsufox/tapestry/synthesis/github.svg)](https://agentmods.dev/skills/natsufox/tapestry/synthesis)
Your own site
<a href="https://agentmods.dev/skills/natsufox/tapestry/synthesis"><img src="https://agentmods.dev/badge/skills/natsufox/tapestry/synthesis/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 synthesis

Your own site · 80×15
<a href="https://agentmods.dev/skills/natsufox/tapestry/synthesis"><img src="https://agentmods.dev/badge/skills/natsufox/tapestry/synthesis.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 40 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,228 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 $0.00040 $0.03228
Opus 5 $0.00020 $0.01614
Sonnet 5 $0.00008 $0.00646
Haiku 4.5 $0.00004 $0.00323

Measured 9d ago against content hash 41c73268525a, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

synthesis 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 9d ago.

The scan reads SKILL.md. This mod also ships 2 executable files (_scripts/bootstrap_kb.py, _scripts/load_context.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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/tapestry/synthesis/SKILL.md · 321 lines

How it starts

The opening of the file, as written. The whole thing — 321 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Tapestry Synthesis

Analyze a stored Tapestry artifact: $ARGUMENTS

When to use this skill

Use this skill when:

  • A user wants interpretation or analysis of already-ingested content
  • You need to consolidate multiple sources into research notes
  • The user asks for synthesis, insights, or higher-level understanding
  • You need to organize ingested content into the knowledge base hierarchy
  • The deterministic ingest is complete and model-based reasoning is needed

Overview

This skill is the workflow layer for model-eligible reasoning.

Use it after deterministic ingest has already produced:

  1. a capture JSON file
  2. a normalized feed JSON file
  3. a Markdown knowledge-base note
  4. a structured handoff payload describing the recommended analysis

The package runtime does not call any model APIs directly. This skill owns the interpretation step.

This skill is also responsible for maintaining the book-like knowledge base under knowledge-base/.

Important: The synthesis mode configuration controls when this skill should be invoked:

  • auto: Agent evaluates note accumulation and decides whether to merge (intelligent, load-based)
  • manual: Only runs when explicitly requested by user
  • batch: Runs after multiple ingests to process all at once
  • deterministic: Runs automatically after every single ingest (high overhead)

See config/tapestry.config.json for current mode setting.

Workflow

  1. Identify the target:
    • if the user gave a stored note path, use it directly
    • if the user gave a URL and it has not been ingested yet, run $tapestry-ingest first
  2. IMPORTANT: Change to the project root directory before running the script:
cd /path/to/your/tapestry/project
python synthesis/_scripts/load_context.py \
  "$ARGUMENTS"

Or use the --project-root flag:

python synthesis/_scripts/load_context.py \
  --project-root /path/to/your/tapestry/project \
  "$ARGUMENTS"
  1. Read the returned handoff payload carefully:
    • digest is the deterministic baseline
    • analysis.skill, analysis.instructions, and analysis.deliverable describe the intended workflow
    • note_text, feed_payload, and capture_payload are the factual source materials
    • Identify the language by reading the content naturally (title, body, comments)
  2. Ensure the book hierarchy exists:

Read the full file on GitHub · 321 lines

Files

What ships with it

22 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 9d ago First seen · 321 lines · 40 tokens per session scan A 41c73268525a

Subscribe to this mod's changes

synthesis is a skill published in the GitHub repository NatsuFox/Tapestry (64 stars, last pushed 4mo ago), licensed MIT. It adds 40 tokens to every session and 3,228 once invoked, about $0.0002 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.