---
title: "Durable Streams - Writing Data - Air Market"
description: "You have data to put into a stream, and the right approach depends on whether it is the occasional write or a steady flow. This covers both, including how to avoid the same record landing twice when…"
canonical: "https://airmarket.ai/app/writing-data"
---

[Air Market](/) / [Developer Tools](/category/devtools) / Durable Streams - Writing Data

Skill by [Durable Streams](/@durable-streams)

# Durable Streams - Writing Data

Get data into a stream, from one-off appends to steady throughput

## What this does

You have data to put into a stream, and the right approach depends on whether it is the occasional write or a steady flow. This covers both, including how to avoid the same record landing twice when the volume is high. Reach for it when you are the one producing the data.

### Top 3 things it does for you

- Create a stream and append to it
- Write at volume without duplicating records
- Send a write without waiting on it

## Information

**Durable Streams - Writing Data at a glance**

|  |  |
| --- | --- |
| Kind | Skill |
| Publisher | [Durable Streams](/@durable-streams) |
| Category | [Developer Tools](/category/devtools) |
| Works with | Agent Skills - an open standard supported by 40+ agents |
| Size | 8 KB |
| Licence | MIT |
| Repository | [durable-streams/durable-streams](https://github.com/durable-streams/durable-streams/tree/8d7852494c30a315f618253e9bce1e846b5c5937/packages/client/skills/writing-data) |
| GitHub stars | 1,666 (as of Nov 2026) |
| Installs | 1, counted by skills.sh (Nov 2026) |

## Security report

**Verified.** AIR scanned this exact version of Durable Streams - Writing Data and flagged nothing. AIR's verdict: **safe**.

**What Durable Streams - Writing Data's check was run against**

|  |  |
| --- | --- |
| Commit | 8d7852494c30a315f618253e9bce1e846b5c5937 |
| Content hash | fc96bd00b40be45677692a44fa16ab6c79f3eca0a0ca33811d2c1c38023b497f |
| Files read | [Browse the files at this exact commit](https://github.com/durable-streams/durable-streams/blob/8d7852494c30a315f618253e9bce1e846b5c5937/packages/client/skills/writing-data/SKILL.md) |

A scan is named by the exact content it read, not by a version number. A different version is a different artifact, and nothing here applies to a version AIR has not scanned.

[Read the full security report for Durable Streams - Writing Data](/security/writing-data)

## About Durable Streams - Writing Data

This is about writing data to durable streams. It covers creating a stream with a content type and appending to it for simple writes, plus an idempotent producer for high-throughput exactly-once delivery with automatic claiming.

It also covers the details around a write: fire-and-forget appends, flushing and closing, handling a stale epoch error, the difference between JSON mode and byte stream mode, and stream closure. Load it when writing, producing, or appending data to a durable stream.

## What's inside

- SKILL.md - instructions

## Questions

### Is Durable Streams - Writing Data safe to install?

AIR scanned this exact version of Durable Streams - Writing Data and flagged nothing. AIR's verdict: safe. The verdict is named by the content that was read, at commit 8d7852494c30, so it cannot drift onto a version nobody scanned. The full report is at https://airmarket.ai/security/writing-data.

### How do I install Durable Streams - Writing Data?

Open https://airmarket.ai/app/writing-data on Air Market and use the install action: Air Market hands Claude a prompt naming this exact skill, and Claude sets it up. Source, pinned to the exact commit this listing describes: https://github.com/durable-streams/durable-streams/tree/8d7852494c30a315f618253e9bce1e846b5c5937/packages/client/skills/writing-data. Install from that link, not the branch.

## Related on Air Market

- [More Developer Tools listings](/category/devtools)
- [Everything by Durable Streams](/@durable-streams)

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Canonical URL: <https://airmarket.ai/app/writing-data>