> ## Documentation Index
> Fetch the complete documentation index at: https://docs.pre.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# Changelog

> What's new in the pre.dev API and SDKs.

User-facing changes to the pre.dev API, SDKs, and dashboard. Subscribe via
the [GitHub releases page](https://github.com/predotdev/predev-api/releases)
to get notified on every SDK bump.

## 2026-07-15

### Act from your inbox, and a much snappier app

* **Answer the agent's questions straight from email.** If the agent asks a clarifying question while you're away, the email now has one-click answer buttons — tap your choice and the build picks up immediately. Links are signed and safe from email scanners.
* **Credits run out mid-build? You get the full picture.** The build pauses safely and you receive an email with current progress, screenshots, and the live preview link. Top up and resume where it left off. A "we'll email you when it's ready" cue now appears during sprints so you can close the tab with confidence.
* **A broad speed pass.** The dashboard, opening a project, and chat are all significantly faster, and the hottest screens paint instantly from cache.
* **Renaming a project keeps old links working**, and builds now survive server restarts and idle timers instead of stalling.

## 2026-07-13

### Watch the agent think, and dial the effort

* **Live thinking ticker.** While the agent reasons, its thinking streams in real time; finished reasoning collapses into a "Thoughts" block you can expand later.
* **Effort levels.** Choose how deep each sprint goes with `/effort` — **low** (fast direct pass), **medium** (task-list loop), or **high** (full research → code → verify pipeline), with **auto** routing each sprint for you by default. See [Build Modes & Effort](/coding-agent/building/build-modes).
* **Fewer unnecessary questions.** The agent now asks clarifying questions only when it genuinely needs an answer — and pings you when a direct sprint finishes.
* **Cleaner parallel-agent view** with per-branch objective, progress, and conclusion.

## 2026-07-09

### The terminal-style workspace, on the web

* **Terminal chat everywhere.** The web workspace now matches the CLI: a terminal-style chat with a `/` command palette (`/sprint`, `/effort`, `/model`, `/balance`, `/fork`, and more) and live view tabs for Plan, Code, and Preview. See [The Workspace](/coding-agent/workspace).
* **The pre.dev CLI** brings the same agent, slash commands, and views to your terminal.
* **Before/after screenshot evidence** on every browser verification step — see exactly what the agent checked and what changed.
* **Builds pick themselves back up.** Interrupted sprints resume automatically instead of waiting for you to notice.

## 2026-07-08

### Generate media inside your build

* **Images, video, audio, and music in chat.** Ask the agent for a logo, a hero video, a voiceover, or a soundtrack mid-build — generated media lands directly in your project.
* **More reliable builds against your acceptance criteria**, with a hardened verification loop.
* Faster, cheaper generated images, and GitHub sync no longer breaks from build cache.

## 2026-06-25

### Parallel agents you can actually inspect

* **The parallel-agent panel shows real work**: per-agent live streaming, full tool detail, and real file diffs as multiple agents fan out across a sprint.
* **Upgraded coding agent model** across all build paths, plus fixes for the agent getting stuck repeating itself.
* Faster app load and a cleaner agent step view with per-step timestamps.

## 2026-06-14

### Usage-based billing for Browser Agents

* **Pay per task, not per seat.** Browser agent tasks bill against your credit balance — 1 credit = \$0.10, with a 0.1-credit floor per task. **Failed tasks are free.**
* **Tier-aware rate limits** raise throughput for paid plans.
* Typed billing errors with `actionUrl` deep-links (see the 2026-04-30 entry) now cover the full task lifecycle.

## 2026-06-09

### Sessions: fork, merge, and build in parallel

* **Run multiple build sessions at once.** Fork a session to try something risky, work several in parallel, and merge back what works — merges no longer drop fork edits, even when git is in a bad state.
* **OAuth connectors, MCP servers, and agent skills** arrive in the coding agent: connect your services once and every build inherits them. See [Integrations](/coding-agent/integrations/overview).
* Secrets and build artifacts now stay strictly out of your GitHub repos.

## 2026-05-26

### Real-time collaboration and mobile preview

* **Multi-session collaboration**: live sync, presence avatars, and per-session status across everyone working on a project. Session forks landed earlier in the month and are now hardened.
* **Mobile preview** with a phone-framed viewport and an Expo QR code for native projects.
* **Much faster returns to a project**: speculative pre-resume from the dashboard and an instant hot path when nothing changed.

## 2026-05-08

### Browser agents join the chat

* **`browser_agent` in the workspace**: the planning agent can now drive a real browser mid-conversation, with an inline timeline card showing every step.
* **Faster and tougher browser automation**: an express path for simple extractions, a form-fill specialist, and stronger stealth for protected sites.
* Queue messages while architecture generation is running — they're picked up the moment it finishes.

## 2026-04-30

### `pre.dev/projects/key` — one-click API key copy

New page at [https://pre.dev/projects/key](https://pre.dev/projects/key).
Sign in once and copy your key — masked-key reveal + copy button inside the
dashboard sidebar. Useful when sharing example apps and SDK quickstarts:
link any "Get an API key" CTA straight here.

Unauthenticated visitors are bounced to sign-in and auto-returned to
`/projects/key` after.

### Browser Agents — typed billing errors with `actionUrl`

Non-2xx responses for [`POST /browser-agent`](/browser-agents/api/run-task)
now carry a structured body:

```json theme={null}
{
  "error": "Need ~0.5 credits, have 0.00. Buy more to continue.",
  "code": "INSUFFICIENT_CREDITS",
  "actionUrl": "https://pre.dev/projects/browser-agents?upgrade=credits"
}
```

`code` is one of `SUBSCRIPTION_REQUIRED`, `INSUFFICIENT_CREDITS`,
`RATE_LIMITED`, `QUEUE_FULL`, `BATCH_TOO_LARGE`. `actionUrl` (when
present) deep-links the user back to pre.dev with the right billing
modal pre-opened — `window.open(actionUrl)` is enough to send the user
to the credit-purchase or subscription flow without any extra UI.

The same body is emitted on the SSE `error` event when streaming.

#### Node SDK — `predev-api@1.1.0`

```ts theme={null}
import { InsufficientCreditsError, SubscriptionRequiredError } from 'predev-api';

try {
  await client.browserAgent(tasks);
} catch (e) {
  if (e instanceof InsufficientCreditsError) window.open(e.actionUrl);
  else if (e instanceof SubscriptionRequiredError) window.open(e.actionUrl);
}
```

New typed exceptions: `SubscriptionRequiredError`,
`InsufficientCreditsError`, `QueueFullError`, `BatchTooLargeError`. All
non-breaking — existing `instanceof PredevAPIError` checks still match.
See the [Node SDK error-handling docs](/browser-agents/sdks/node#error-handling).

#### Python SDK — `predev-api==1.1.0`

```python theme={null}
from predev_api import InsufficientCreditsError, SubscriptionRequiredError
import webbrowser

try:
    client.browser_agent(tasks)
except InsufficientCreditsError as e:
    if e.action_url: webbrowser.open(e.action_url)
except SubscriptionRequiredError as e:
    if e.action_url: webbrowser.open(e.action_url)
```

New exceptions mirror the Node SDK with `action_url` field. See the
[Python SDK error-handling docs](/browser-agents/sdks/python#error-handling).