web_applyCookies

Injects a set of cookies into the current browser context. Pass [cookiesJson] as a JSON string in Playwright’s storage-state cookie array shape, e.g.:

[{“name”:”sid”,”value”:”abc”,”domain”:”.example.com”,”path”:”/”,”httpOnly”:true,”secure”:true,”sameSite”:”Lax”}]

Typically used to replay a previously-saved authenticated session so a trail can skip a full UI login. Pair with web_getStorageState (for capture) and web_navigate (to drive to the authenticated landing page after applying).

Source

• Kind: class-backed
• Class: xyz.block.trailblaze.playwright.tools.PlaywrightNativeApplyCookiesTool

Contract

• Visible to LLM: yes (surface_to_llm: true)
• Recordable: yes (is_recordable: true)
• Host-only: no (requires_host: false)

Input schema

Optional parameters

• cookiesJson — String JSON array of cookies in Playwright’s storage-state cookie shape. May be the full storageState JSON object (in which case the cookies field is read), or the bare cookies array.

Output

Returns: string (opaque text content)

Typed result schemas (kind: query | action, MCP structuredContent) are not yet carried by the resolved manifest — this section will gain detail when that lands.