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# Claude “Harmony” local-files preview, found by @testingcatalog — unconfirmed

@testingcatalog showed a Harmony preview on March 15, 2025. Anthropic has not confirmed a feature by that name in our sources.

Leaked on 15 March 2025

![Evidence tray card: Claude “Harmony” local-files preview, found by @testingcatalog — unconfirmed](https://leakly.com/assets/og/claude-harmony-local-files.png)

On March 15, 2025, @testingcatalog posted an early preview of a Claude feature called Harmony that would let users give Claude access to a local directory to research and work with its content.

> **🚨 AI News | TestingCatalog** @testingcatalog
>
> BREAKING 🚨: Early preview of the upcoming Harmony feature for Claude.
> Harmony will allow users to give Claude FULL access to a local directory so it can research and operate with its content.
> Is Harmony the 1st Anthropic's AI Agent? 👀 https://t.co/c4aDNejpHp
>
> 2,497 likes · 256 reposts · counts as of 09 Nov 2026, 07:12 UTC
>
> — 🚨 AI News | TestingCatalog (@testingcatalog) [March 15, 2025](https://twitter.com/testingcatalog/status/1901051432339730603)

not in our leaker index

[TestingCatalog](https://www.testingcatalog.com/anthropic-finalizing-harmony-an-ai-agent-to-operate-with-local-files/)’s own write-up the same day said Anthropic was developing Harmony to bring a local directory of files into Claude’s context.

Unconfirmed. The only linked source is the leaker’s own site; no Anthropic statement is linked.

[Unconfirmed]

## What happened later

Unconfirmed: no official confirmation found.

## Sources

* [Original X post by @testingcatalog](https://x.com/testingcatalog/status/1901051432339730603)
* [TestingCatalog — Anthropic prepares Harmony, AI agent to work with local files](https://www.testingcatalog.com/anthropic-finalizing-harmony-an-ai-agent-to-operate-with-local-files/)

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