Fable Mode

Install

Works with Claude Code, Codex, VS Code, Cursor, Windsurf, Claude Desktop. Read the repository before you give any tool access to your data.

npx agentmarket install connector/rex-codebase-fable-mode

About

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Permissions

What this server can do and what it asks for, from its tool list, install config and code. Checked Oct 26, 2026.

Tools

2 read · 8 write · 0 delete · 4 not yet classified

Secrets

None asked for

Install scripts

Runs code on install

Runs as

Python package

Tools (14)

Read from the source code; the running server may differ. Descriptions are the server’s own words; hidden characters are shown as [U+…].

• browser_back

  Loads the previous history entry in the active or named browser session without adding a new history entry. Use it for history traversal rather than browser_navigate. If history is already at its first entry, it is a no-op that returns current page status. A navigation failure returns an error and preserves the history index; omitting `session_id` reuses or creates the active/default session.

• browser_click

  Activates an href-bearing link or submits a GET form through normal browser navigation. POST and other form methods are refused, and GET forms containing password fields are blocked to prevent credential leakage. Returns the resulting page status or a bounded error without bypassing existing navigation controls.

• browser_close

  Closes and permanently discards one in-memory browser session, including its current document and history; persistent profile cookies remain saved. Use it when that tab is no longer needed. `session_id` targets a specific session; if omitted, the active session is closed. Returns `closed`, or `not_found` without changing another session.

• browser_forward

  Loads the next history entry in the active or named browser session without adding a new history entry. Use it after browser_back rather than browser_navigate. If no forward entry exists, it is a no-op that returns current page status. A navigation failure returns an error and preserves the history index; omitting `session_id` reuses or creates the active/default session.

• browser_navigate

  Loads `url` into an existing browser session, replacing its current document and adding a history entry. Use this instead of browser_open when continuing in a known session; if `session_id` is omitted, the active session is reused or a default session is created. It waits up to `timeout` seconds and returns the resulting URL, title, viewport, scroll position, and indexed elements; network, timeout, size, and parse failures return an error object without changing committed page state.

• browser_open

  Opens a URL in the stealth agent browser using persistent local logins/profile (<=20 MB RAM ceiling). Supports local dev servers across all languages.

• browser_press

  Edits supported text controls, moves focus with Tab, or activates links with Enter.

• browser_reload

  Reloads the current page in the browser session.

• browser_screenshot

  Captures one 1280x800 PNG of the current viewport without navigation or scroll changes. Use this for the visible region; use browser_snapshot_layers for multi-viewport coverage. An omitted `session_id` targets the active/default session. Returns one layer with its offset, dimensions, and base64 PNG data.

• browser_scroll

  Scrolls the page vertically by delta pixels.

• browser_snapshot_layers

  Captures up to `max_layers` PNGs from the top of the current document, one 1280x800 viewport per layer, without changing the session scroll position. Use this for multi-viewport page coverage; use browser_screenshot for only the current viewport. An omitted `session_id` targets the active/default session. Returns layer count, offsets, dimensions, and base64 PNG data; `max_layers` defaults to 3 and is capped at 10.

• browser_type

  Replaces the full value of a text-like input or textarea identified by `element_id`; it does not submit the form. Use browser_press for single-key edits or activation. An omitted `session_id` targets the active/default session. Returns status `typed`, the element ID, and the supplied text; missing or non-editable elements return an error object and are not changed.

• browser_wait

  Waits for a specified duration in seconds.

• fable_session

  Runs one Fable operation selected by `action`. Use it for Fable sessions, gates, evidence/proofs, review rubrics, checkpoints, compression, design audits, research scrapers, and explicitly experimental System 3 operations; use browser_* tools for web-page navigation and interaction. Start stateful workflows with `create_session` and a `session_name`; later session actions reuse that name. Only fields documented for the selected action are read, and missing or invalid inputs return an `Error:` message without raising an MCP transport error. Status/list/telemetry/get/view/check operations are re…

Signals

Stars

24

Forks

2

Open issues

2

Contributors

5

Weekly downloads

63

Last commit

Sep 18, 2026 (1 month ago)

Last release

Sep 18, 2026 (1 month ago)

Last package publish

Sep 18, 2026 (1 month ago)

From GitHub (fetched Oct 24, 2026) and the package registry.

Details

Registry name

io.github.REX-codebase/fable-mode

Version

1.3.5

Auth

No auth

Packages

pypi fable-engine

License

MIT

Repository

github.com/REX-codebase/fable-mode

First seen

Oct 24, 2026

Last checked

Oct 24, 2026

Source

Official MCP Registrygithub-graphql