Claude Code leak exposes a Tamagotchi-style ‘pet’ and an always-on agent

What is happening now

After Anthropic released Claude Code’s 2.1.88 update , users quickly discovered that it contained a package with a source map file containing its TypeScript codebase, with one person on X calling attention to the leak and posting a file containing the code. The leaked data reportedly contains more than 512,000 lines of code and provides a look into the inner workings of the AI-powered coding tool, as reported earlier by Ars Technica and VentureBeat . The main references behind this piece include The Verge AI.

Where the sources line up

The Verge AI is the main source layer for now, and the rest should be read as a signal that is still widening. Users who have dug into the code claim to have uncovered upcoming features, Anthropic’s instructions for the AI bot , and insight into its ”memory” architecture . Some things spotted by users include a Tamagotchi-like pet that “sits beside your input box and reacts to your coding,” according to a post on Reddit , along with a “KAIROS” feature that could enable an always-on background agent. Users also found a comment from one of Anthropic’s coders, who admits at one point that the “memoization here increases complexity by a lot, and im not sure it really improves performance.”. After Anthropic released Claude Code’s 2.1.88 update , users quickly discovered that it contained a package with a source map file containing its TypeScript codebase, with one person on X calling attention to the leak and posting a file containing the code.

The details worth keeping

Users who have dug into the code claim to have uncovered upcoming features, Anthropic’s instructions for the AI bot , and insight into its ”memory” architecture . Some things spotted by users include a Tamagotchi-like pet that “sits beside your input box and reacts to your coding,” according to a post on Reddit , along with a “KAIROS” feature that could enable an always-on background agent. Users also found a comment from one of Anthropic’s coders, who admits at one point that the “memoization here increases complexity by a lot, and im not sure it really improves performance.”. Though Anthropic later fixed the issue, that didn’t stop users from copying the code to a repository on GitHub , which has since amassed more than 50,000 forks (or copies of the repository). Anthropic launched Claude Code in February of 2025, and the tool picked up more steam after adding agentic capabilities that perform tasks on a user’s behalf. The important angle is that this touches the shift from AI as a demo to AI as real work, where speed, cost, and reliability start deciding who wins.

Why this matters most

The signal is strong enough to deserve attention, but it still needs to be read as something developing rather than fully settled. With 1 source layers on the table, the part worth reading most closely is where firm facts meet the market's early reaction. The leaked data reportedly contains more than 512,000 lines of code and provides a look into the inner workings of the AI-powered coding tool, as reported earlier by Ars Technica and VentureBeat .

What to watch next

The next question is how quickly the shift reaches real products and who feels it first in everyday work. Patrick Tech Media will keep checking rollout speed, user reaction, and how The Verge AI update the next pieces. In this pass, the story was distilled from 1 signals into 1 source references that are genuinely useful to readers.