paper-fetch-mcp

Overview Schema Source Related Servers Discussions Admin

browser_preflight

Checks live browser access to publisher HTML pages for one or all providers, preparing Camoufox and updating native publisher profiles before paper retrieval.

Instructions

Live-check the shared browser HTML path for one provider or all browser providers. This prepares managed Camoufox before launch, opens publisher pages, and updates native publisher profiles. save_storage_state controls only JSON snapshot export; it never runs PDF fallback or automatic authentication.

Tool call template

This tool declares no required parameters. Add optional parameters from the input schema as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {},
    "name": "browser_preflight"
  }
}

Input Schema

Name	Required	Description	Default
`detail`	No		full
`provider`	No
`test_url`	No
`timeout_ms`	No
`browser_user_agent`	No
`save_storage_state`	No	Export a compatibility JSON snapshot; native persistent profiles are updated even when false.
`storage_state_path`	No

Schema Changelog

Changes observed during successful MCP inspections.

Changed2 schema fields changedv7.3.0Nov 3, 2026

changedInput schema / properties / provider / anyOf

Previous value: -[
-  {
-    "enum": [
-      "wiley",
-      "science",
-      "pnas",
-      "ieee",
-      "ams",
-      "mdpi",
-      "royalsocietypublishing",
-      "annualreviews",
-      "acs",
-      "iop",
-      "aip",
-      "tandf"
-    ],
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]New value: +[
+  {
+    "enum": [
+      "elsevier",
+      "wiley",
+      "science",
+      "pnas",
+      "ieee",
+      "ams",
+      "mdpi",
+      "royalsocietypublishing",
+      "annualreviews",
+      "acs",
+      "iop",
+      "aip",
+      "tandf"
+    ],
+    "type": "string"
+  },
+  {
+    "type": "null"
+  }
+]

addedInput schema / properties / save_storage_state / description

Added value: +"Export a compatibility JSON snapshot; native persistent profiles are updated even when false."

Changed1 schema field changedv6.1.0Sep 2, 2026

removedInput schema / properties / browser_auto_prepare

Removed value: -{
-  "anyOf": [
-    {
-      "type": "boolean"
-    },
-    {
-      "type": "null"
-    }
-  ],
-  "default": null,
-  "title": "Browser Auto Prepare"
-}

Changed1 schema field changedv6.0.1Aug 29, 2026

changedOutput schema / (root)

Previous value: -{
-  "$defs": {
-    "BrowserPreflightItemOutput": {
-      "properties": {
-        "diagnostics": {
-          "additionalProperties": true,
-          "type": "object"
-        },
-        "final_url": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "message": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "next_action": {
-          "type": "string"
-        },
-        "provider": {
-          "type": "string"
-        },
-        "provider_label": {
-          "type": "string"
-        },
-        "ready": {
-          "type": "boolean"
-        },
-        "reason_code": {
-          "type": "string"
-        },
-        "stage": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "status": {
-          "type": "string"
-        },
-        "storage_state": {
-          "$ref": "#/$defs/BrowserPreflightStorageStateOutput"
-        },
-        "target_url": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "title": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        }
-      },
-      "type": "object"
-    },
-    "BrowserPreflightStorageStateOutput": {
-      "properties": {
-        "attempted": {
-          "type": "boolean"
-        },
-        "path": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "reason": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "save_requested": {
-          "type": "boolean"
-        },
-        "saved": {
-          "type": "boolean"
-        }
-      },
-      "type": "object"
-    },
-    "BrowserPreflightSummaryOutput": {
-      "properties": {
-        "auth_required": {
-          "type": "integer"
-        },
-        "cancelled": {
-          "type": "integer"
-        },
-        "challenge": {
-          "type": "integer"
-        },
-        "completed": {
-          "type": "integer"
-        },
-        "extraction_error": {
-          "type": "integer"
-        },
-        "network_timeout": {
-          "type": "integer"
-        },
-        "ready": {
-          "type": "integer"
-        },
-        "requested": {
-          "type": "integer"
-        },
-        "runtime_error": {
-          "type": "integer"
-        }
-      },
-      "type": "object"
-    },
-    "ResolvedCandidateOutput": {
-      "properties": {
-        "author_score": {
-          "type": "number"
-        },
-        "authors": {
-          "items": {
-            "type": "string"
-          },
-          "type": "array"
-        },
-        "doi": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "journal_title": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "landing_page_url": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "provider_hint": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "published": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "score": {
-          "type": "number"
-        },
-        "title": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "title_score": {
-          "type": "number"
-        },
-        "year_score": {
-          "type": "number"
-        }
-      },
-      "type": "object"
-    },
-    "TraceEventOutput": {
-      "properties": {
-        "attempt": {
-          "anyOf": [
-            {
-              "type": "integer"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "attempt_id": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "code": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "component": {
-          "type": "string"
-        },
-        "duration_ms": {
-          "anyOf": [
-            {
-              "type": "number"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "error_category": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "finished_at": {
-          "anyOf": [
-            {
-              "type": "number"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "http_status": {
-          "anyOf": [
-            {
-              "type": "integer"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "message": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "outcome": {
-          "type": "string"
-        },
-        "parent_span_id": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "provider": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "retry_after_seconds": {
-          "anyOf": [
-            {
-              "type": "integer"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "retryable": {
-          "anyOf": [
-            {
-              "type": "boolean"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "route": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "span_id": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "stage": {
-          "type": "string"
-        },
-        "started_at": {
-          "anyOf": [
-            {
-              "type": "number"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "target": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "target_sha256": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        }
-      },
-      "type": "object"
-    }
-  },
-  "properties": {
-    "auth_attempted": {
-      "type": "boolean"
-    },
-    "candidates": {
-      "anyOf": [
-        {
-          "items": {
-            "$ref": "#/$defs/ResolvedCandidateOutput"
-          },
-          "type": "array"
-        },
-        {
-          "type": "null"
-        }
-      ]
-    },
-    "code": {
-      "anyOf": [
-        {
-          "type": "string"
-        },
-        {
-          "type": "null"
-        }
-      ]
-    },
-    "detail": {
-      "type": "string"
-    },
-    "details": {
-      "additionalProperties": true,
-      "type": "object"
-    },
-    "diagnostic_scope": {
-      "type": "string"
-    },
-    "error_category": {
-      "anyOf": [
-        {
-          "type": "string"
-        },
-        {
-          "type": "null"
-        }
-      ]
-    },
-    "http_status": {
-      "anyOf": [
-        {
-          "type": "integer"
-        },
-        {
-          "type": "null"
-        }
-      ]
-    },
-    "missing_env": {
-      "anyOf": [
-        {
-          "items": {
-            "type": "string"
-          },
-          "type": "array"
-        },
-        {
-          "type": "null"
-        }
-      ]
-    },
-    "network_access": {
-      "type": "string"
-    },
-    "pdf_fallback_attempted": {
-      "type": "boolean"
-    },
-    "provider": {
-      "anyOf": [
-        {
-          "type": "string"
-        },
-        {
-          "type": "null"
-        }
-      ]
-    },
-    "provider_filter": {
-      "anyOf": [
-        {
-          "type": "string"
-        },
-        {
-          "type": "null"
-        }
-      ]
-    },
-    "reason": {
-      "type": "string"
-    },
-    "results": {
-      "items": {
-        "$ref": "#/$defs/BrowserPreflightItemOutput"
-      },
-      "type": "array"
-    },
-    "retry_after_seconds": {
-      "anyOf": [
-        {
-          "type": "integer"
-        },
-        {
-          "type": "null"
-        }
-      ]
-    },
-    "retryable": {
-      "anyOf": [
-        {
-          "type": "boolean"
-        },
-        {
-          "type": "null"
-        }
-      ]
-    },
-    "route": {
-      "anyOf": [
-        {
-          "type": "string"
-        },
-        {
-          "type": "null"
-        }
-      ]
-    },
-    "schema_version": {
-      "type": "integer"
-    },
-    "source_trail": {
-      "items": {
-        "type": "string"
-      },
-      "type": "array"
-    },
-    "stage": {
-      "anyOf": [
-        {
-          "type": "string"
-        },
-        {
-          "type": "null"
-        }
-      ]
-    },
-    "status": {
-      "type": "string"
-    },
-    "storage_state_write_enabled": {
-      "type": "boolean"
-    },
-    "summary": {
-      "$ref": "#/$defs/BrowserPreflightSummaryOutput"
-    },
-    "trace": {
-      "items": {
-        "$ref": "#/$defs/TraceEventOutput"
-      },
-      "type": "array"
-    },
-    "warnings": {
-      "items": {
-        "type": "string"
-      },
-      "type": "array"
-    }
-  },
-  "type": "object"
-}New value: +null

Changed1 schema field changedv5.4.1Aug 20, 2026

addedInput schema / properties / browser_auto_prepare

Added value: +{
+  "anyOf": [
+    {
+      "type": "boolean"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "default": null,
+  "title": "Browser Auto Prepare"
+}

Changed6 schema fields changedv5.2.0Aug 7, 2026

changedInput schema / properties / provider / anyOf

Previous value: -[
-  {
-    "enum": [
-      "wiley",
-      "science",
-      "pnas",
-      "ieee",
-      "ams",
-      "mdpi",
-      "royalsocietypublishing",
-      "annualreviews",
-      "acs",
-      "iop",
-      "aip"
-    ],
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]New value: +[
+  {
+    "enum": [
+      "wiley",
+      "science",
+      "pnas",
+      "ieee",
+      "ams",
+      "mdpi",
+      "royalsocietypublishing",
+      "annualreviews",
+      "acs",
+      "iop",
+      "aip",
+      "tandf"
+    ],
+    "type": "string"
+  },
+  {
+    "type": "null"
+  }
+]

addedOutput schema / $defs / BrowserPreflightItemOutput / properties / message

Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "null"
+    }
+  ]
+}

removedOutput schema / $defs / BrowserPreflightItemOutput / properties / reason
```
Removed value: -{
-  "type": "string"
-}
```

addedOutput schema / $defs / BrowserPreflightItemOutput / properties / stage

Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "null"
+    }
+  ]
+}

addedOutput schema / $defs / BrowserPreflightSummaryOutput / properties / extraction_error
```
Added value: +{
+  "type": "integer"
+}
```
addedOutput schema / $defs / BrowserPreflightSummaryOutput / properties / network_timeout
```
Added value: +{
+  "type": "integer"
+}
```

Changed87 schema fields changedv4.1.0Jul 30, 2026

changedInput schema / properties / provider / anyOf

Previous value: -[
-  {
-    "enum": [
-      "wiley",
-      "science",
-      "pnas",
-      "mdpi",
-      "royalsocietypublishing",
-      "annualreviews",
-      "acs",
-      "iop",
-      "aip"
-    ],
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]New value: +[
+  {
+    "enum": [
+      "wiley",
+      "science",
+      "pnas",
+      "ieee",
+      "ams",
+      "mdpi",
+      "royalsocietypublishing",
+      "annualreviews",
+      "acs",
+      "iop",
+      "aip"
+    ],
+    "type": "string"
+  },
+  {
+    "type": "null"
+  }
+]

removedOutput schema / $defs / BrowserPreflightItemOutput / properties / diagnostics / title
```
Removed value: -"Diagnostics"
```
removedOutput schema / $defs / BrowserPreflightItemOutput / properties / final_url / title
```
Removed value: -"Final Url"
```
removedOutput schema / $defs / BrowserPreflightItemOutput / properties / next_action / title
```
Removed value: -"Next Action"
```
removedOutput schema / $defs / BrowserPreflightItemOutput / properties / provider / title
```
Removed value: -"Provider"
```
removedOutput schema / $defs / BrowserPreflightItemOutput / properties / provider_label / title
```
Removed value: -"Provider Label"
```
removedOutput schema / $defs / BrowserPreflightItemOutput / properties / ready / title
```
Removed value: -"Ready"
```
removedOutput schema / $defs / BrowserPreflightItemOutput / properties / reason / title
```
Removed value: -"Reason"
```
removedOutput schema / $defs / BrowserPreflightItemOutput / properties / reason_code / title
```
Removed value: -"Reason Code"
```
removedOutput schema / $defs / BrowserPreflightItemOutput / properties / status / title
```
Removed value: -"Status"
```
removedOutput schema / $defs / BrowserPreflightItemOutput / properties / target_url / title
```
Removed value: -"Target Url"
```
removedOutput schema / $defs / BrowserPreflightItemOutput / properties / title / title
```
Removed value: -"Title"
```
removedOutput schema / $defs / BrowserPreflightItemOutput / title
```
Removed value: -"BrowserPreflightItemOutput"
```
removedOutput schema / $defs / BrowserPreflightStorageStateOutput / properties / attempted / title
```
Removed value: -"Attempted"
```
removedOutput schema / $defs / BrowserPreflightStorageStateOutput / properties / path / title
```
Removed value: -"Path"
```
removedOutput schema / $defs / BrowserPreflightStorageStateOutput / properties / reason / title
```
Removed value: -"Reason"
```
removedOutput schema / $defs / BrowserPreflightStorageStateOutput / properties / save_requested / title
```
Removed value: -"Save Requested"
```
removedOutput schema / $defs / BrowserPreflightStorageStateOutput / properties / saved / title
```
Removed value: -"Saved"
```
removedOutput schema / $defs / BrowserPreflightStorageStateOutput / title
```
Removed value: -"BrowserPreflightStorageStateOutput"
```
removedOutput schema / $defs / BrowserPreflightSummaryOutput / properties / auth_required / title
```
Removed value: -"Auth Required"
```
removedOutput schema / $defs / BrowserPreflightSummaryOutput / properties / cancelled / title
```
Removed value: -"Cancelled"
```
removedOutput schema / $defs / BrowserPreflightSummaryOutput / properties / challenge / title
```
Removed value: -"Challenge"
```
removedOutput schema / $defs / BrowserPreflightSummaryOutput / properties / completed / title
```
Removed value: -"Completed"
```
removedOutput schema / $defs / BrowserPreflightSummaryOutput / properties / ready / title
```
Removed value: -"Ready"
```
removedOutput schema / $defs / BrowserPreflightSummaryOutput / properties / requested / title
```
Removed value: -"Requested"
```
removedOutput schema / $defs / BrowserPreflightSummaryOutput / properties / runtime_error / title
```
Removed value: -"Runtime Error"
```
removedOutput schema / $defs / BrowserPreflightSummaryOutput / title
```
Removed value: -"BrowserPreflightSummaryOutput"
```
removedOutput schema / $defs / ResolvedCandidateOutput / properties / author_score / title
```
Removed value: -"Author Score"
```
removedOutput schema / $defs / ResolvedCandidateOutput / properties / authors / title
```
Removed value: -"Authors"
```
removedOutput schema / $defs / ResolvedCandidateOutput / properties / doi / title
```
Removed value: -"Doi"
```
removedOutput schema / $defs / ResolvedCandidateOutput / properties / journal_title / title
```
Removed value: -"Journal Title"
```
removedOutput schema / $defs / ResolvedCandidateOutput / properties / landing_page_url / title
```
Removed value: -"Landing Page Url"
```
removedOutput schema / $defs / ResolvedCandidateOutput / properties / provider_hint / title
```
Removed value: -"Provider Hint"
```
removedOutput schema / $defs / ResolvedCandidateOutput / properties / published / title
```
Removed value: -"Published"
```
removedOutput schema / $defs / ResolvedCandidateOutput / properties / score / title
```
Removed value: -"Score"
```
removedOutput schema / $defs / ResolvedCandidateOutput / properties / title / title
```
Removed value: -"Title"
```
removedOutput schema / $defs / ResolvedCandidateOutput / properties / title_score / title
```
Removed value: -"Title Score"
```
removedOutput schema / $defs / ResolvedCandidateOutput / properties / year_score / title
```
Removed value: -"Year Score"
```
removedOutput schema / $defs / ResolvedCandidateOutput / title
```
Removed value: -"ResolvedCandidateOutput"
```

addedOutput schema / $defs / TraceEventOutput

Added value: +{
+  "properties": {
+    "attempt": {
+      "anyOf": [
+        {
+          "type": "integer"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "attempt_id": {
+      "anyOf": [
+        {
+          "type": "string"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "code": {
+      "anyOf": [
+        {
+          "type": "string"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "component": {
+      "type": "string"
+    },
+    "duration_ms": {
+      "anyOf": [
+        {
+          "type": "number"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "error_category": {
+      "anyOf": [
+        {
+          "type": "string"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "finished_at": {
+      "anyOf": [
+        {
+          "type": "number"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "http_status": {
+      "anyOf": [
+        {
+          "type": "integer"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "message": {
+      "anyOf": [
+        {
+          "type": "string"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "outcome": {
+      "type": "string"
+    },
+    "parent_span_id": {
+      "anyOf": [
+        {
+          "type": "string"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "provider": {
+      "anyOf": [
+        {
+          "type": "string"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "retry_after_seconds": {
+      "anyOf": [
+        {
+          "type": "integer"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "retryable": {
+      "anyOf": [
+        {
+          "type": "boolean"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "route": {
+      "anyOf": [
+        {
+          "type": "string"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "span_id": {
+      "anyOf": [
+        {
+          "type": "string"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "stage": {
+      "type": "string"
+    },
+    "started_at": {
+      "anyOf": [
+        {
+          "type": "number"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "target": {
+      "anyOf": [
+        {
+          "type": "string"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "target_sha256": {
+      "anyOf": [
+        {
+          "type": "string"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    }
+  },
+  "type": "object"
+}

removedOutput schema / properties / auth_attempted / default
```
Removed value: -null
```
removedOutput schema / properties / auth_attempted / title
```
Removed value: -"Auth Attempted"
```
removedOutput schema / properties / candidates / default
```
Removed value: -null
```
removedOutput schema / properties / candidates / title
```
Removed value: -"Candidates"
```
removedOutput schema / properties / code / default
```
Removed value: -null
```
removedOutput schema / properties / code / title
```
Removed value: -"Code"
```
removedOutput schema / properties / detail / default
```
Removed value: -null
```
removedOutput schema / properties / detail / title
```
Removed value: -"Detail"
```

addedOutput schema / properties / details

Added value: +{
+  "additionalProperties": true,
+  "type": "object"
+}

removedOutput schema / properties / diagnostic_scope / default
```
Removed value: -null
```
removedOutput schema / properties / diagnostic_scope / title
```
Removed value: -"Diagnostic Scope"
```
removedOutput schema / properties / error_category / default
```
Removed value: -null
```
removedOutput schema / properties / error_category / title
```
Removed value: -"Error Category"
```
removedOutput schema / properties / http_status / default
```
Removed value: -null
```
removedOutput schema / properties / http_status / title
```
Removed value: -"Http Status"
```
removedOutput schema / properties / missing_env / default
```
Removed value: -null
```
removedOutput schema / properties / missing_env / title
```
Removed value: -"Missing Env"
```
removedOutput schema / properties / network_access / default
```
Removed value: -null
```
removedOutput schema / properties / network_access / title
```
Removed value: -"Network Access"
```
removedOutput schema / properties / pdf_fallback_attempted / default
```
Removed value: -null
```
removedOutput schema / properties / pdf_fallback_attempted / title
```
Removed value: -"Pdf Fallback Attempted"
```
removedOutput schema / properties / provider / default
```
Removed value: -null
```
removedOutput schema / properties / provider / title
```
Removed value: -"Provider"
```
removedOutput schema / properties / provider_filter / default
```
Removed value: -null
```
removedOutput schema / properties / provider_filter / title
```
Removed value: -"Provider Filter"
```
removedOutput schema / properties / reason / default
```
Removed value: -null
```
removedOutput schema / properties / reason / title
```
Removed value: -"Reason"
```
removedOutput schema / properties / results / default
```
Removed value: -null
```
removedOutput schema / properties / results / title
```
Removed value: -"Results"
```
removedOutput schema / properties / retry_after_seconds / default
```
Removed value: -null
```
removedOutput schema / properties / retry_after_seconds / title
```
Removed value: -"Retry After Seconds"
```

addedOutput schema / properties / retryable

Added value: +{
+  "anyOf": [
+    {
+      "type": "boolean"
+    },
+    {
+      "type": "null"
+    }
+  ]
+}

addedOutput schema / properties / route

Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "null"
+    }
+  ]
+}

removedOutput schema / properties / schema_version / default
```
Removed value: -null
```
removedOutput schema / properties / schema_version / title
```
Removed value: -"Schema Version"
```
removedOutput schema / properties / source_trail / default
```
Removed value: -null
```
removedOutput schema / properties / source_trail / title
```
Removed value: -"Source Trail"
```

addedOutput schema / properties / stage

Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "null"
+    }
+  ]
+}

removedOutput schema / properties / status / default
```
Removed value: -null
```
removedOutput schema / properties / status / title
```
Removed value: -"Status"
```
removedOutput schema / properties / storage_state_write_enabled / default
```
Removed value: -null
```
removedOutput schema / properties / storage_state_write_enabled / title
```
Removed value: -"Storage State Write Enabled"
```
removedOutput schema / properties / summary / default
```
Removed value: -null
```

addedOutput schema / properties / trace

Added value: +{
+  "items": {
+    "$ref": "#/$defs/TraceEventOutput"
+  },
+  "type": "array"
+}

removedOutput schema / properties / warnings / default
```
Removed value: -null
```
removedOutput schema / properties / warnings / title
```
Removed value: -"Warnings"
```

removedOutput schema / title

Removed value: -"BrowserPreflightOutput"

Addedv4.0.1Jul 27, 2026
Removedv3.2.1Jul 25, 2026
Addedv3.2.0Jul 25, 2026

TDQS

B3.3/5.0

Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

The annotations already declare that this is non-readonly, open-world, non-idempotent, and non-destructive. The description adds meaningful behavior beyond that: it opens publisher pages, updates native publisher profiles, and explicitly does not run PDF fallback or automatic authentication. The only notable gap is that it does not detail what profile updates actually mutate or how timeout behavior works.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is three sentences and front-loads the core action before adding operational details. There is little wasted wording, though terms like 'Camoufox' and 'shared browser HTML path' may be opaque without context.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

This is a mutating, open-world tool with seven parameters, no output schema, and very low schema description coverage. The description covers key scope and side-effect caveats, but it omits most parameter semantics and does not explain return values, timeout behavior, or what native publisher profile updates actually change.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters2/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is only 14%, so the description needs to compensate heavily for undocumented parameters. It clarifies that provider null means all providers and explains that save_storage_state controls only JSON snapshot export, but it leaves detail, test_url, timeout_ms, browser_user_agent, and storage_state_path without any added meaning.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description gives a specific verb and resource: 'Live-check the shared browser HTML path' for one provider or all browser providers. It also explains that this prepares Camoufox, opens publisher pages, and updates native publisher profiles, making the preflight purpose clear. It does not explicitly distinguish itself from named siblings such as provider_status or batch_check, so it falls short of a 5.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The phrase 'before launch' implies when this tool should be used, and 'for one provider or all browser providers' clarifies scope. However, there is no explicit guidance on when not to use it or which sibling tool to choose instead.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

Deploy Server

browser_preflight

Instructions

Tool call template

Input Schema

Schema Changelog

TDQS

Other Tools