sync

A guided setup for creating a new Notion Workers sync, which copies data from an external source into Notion. It asks about the data source, update method, pagination, and cursor before generating code.

In plain words
What is it for?
Use it to build syncs for services such as issue trackers, payment systems, or ticketing tools, including their data retrieval and change-tracking logic.
Why use it?
It makes the design decisions explicit and helps avoid choosing the wrong sync pattern or mishandling large or changing datasets.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/colebemis/notion-workers/sync
Any agent
npx skills add colebemis/notion-workers --skill sync
Clone the repo
git clone --depth 1 https://github.com/colebemis/notion-workers

Made for: Claude Code, Codex.

Per session 29 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,021 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 89% copy Near-identical to another mod 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 $0.00029 $0.04021
Opus 5 $0.00015 $0.02011
Sonnet 5 $0.00006 $0.00804
Haiku 4.5 $0.00003 $0.00402

Measured 2d ago against content hash c16e15f4dc4c, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

sync 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 2d 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.

Origin

This is a copy

89% identical to sync — 138 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.agents/skills/sync/SKILL.md · 369 lines

How it starts

The opening of the file, as written. The whole thing — 369 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Instructions

You are helping the user create a new sync capability for their Notion Worker. Walk through each step, asking questions and making recommendations. Generate working code at the end.

Before you begin, read these reference files to understand sync patterns:

  • .agents/skills/sync-guide/SKILL.md — concepts, modes, patterns, common mistakes
  • .agents/skills/sync-guide/api-pagination-patterns.md — real-world API strategies
  • .agents/skills/sync-guide/examples/ — working code templates

Also read the current src/index.ts to understand what already exists.

Step 1: Understand the Data Source

Ask the user:

  • What data are you syncing? (e.g., "Jira issues", "Stripe customers", "ServiceNow tickets")

If they name a well-known API, look up its pagination mechanism and change-tracking capabilities (does it have updated_at? an events endpoint? cursor-based pagination?).

Step 2: Determine the Right Architecture

Based on what you know about the data source, recommend one of two architectures:

Simple replace sync

Use when: the source is small (<1k records) OR the API has no change tracking (no updated_at, no event feed).

One sync, replace mode. Re-fetches everything each cycle. The runtime auto-deletes records that disappear from the source. Simplest option.

Backfill + delta pair

Use when: the API supports change tracking (updated_at, events, changelog) — this covers most enterprise APIs (Salesforce, Stripe, Linear, GitHub, HubSpot).

Two separate syncs writing to the same database:

  • Backfill sync (replace mode, schedule: "manual"): Paginates the full dataset. Triggered manually via CLI when a full re-import is needed. Replace mode's mark-and-sweep automatically cleans up records deleted from the source.
  • Delta sync (incremental mode, schedule: "5m" or similar): Fetches only recently changed records. Runs on a timer for low-latency updates.

Advantages over a single bi-modal sync:

  • No phase discrimination in state — each sync has simple, focused state
  • No backfill-to-delta transition logic
  • Backfill and delta run independently — re-backfill anytime without disrupting delta
  • Easier to reason about and debug

Read the full file on GitHub · 369 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. 2d ago First seen · 369 lines · 29 tokens per session scan A c16e15f4dc4c

Subscribe to this mod's changes

sync is a skill published in the GitHub repository colebemis/notion-workers (126 stars, last pushed 1mo ago), licensed MIT. It adds 29 tokens to every session and 4,021 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 89% identical to sync, differing in 138 lines, and is treated as a copy.

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