paper-fetch-mcp

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browser_preflight

Check browser-based access to publisher pages across one or all providers, opening sites to confirm HTML retrieval and update storage state.

Instructions

Live-check the shared browser HTML path for one provider or all browser providers. This opens publisher pages and may update filtered storage-state; it never runs PDF fallback, automatic authentication, or runtime installation.

Input Schema

TableJSON Schema

Name	Required	Default
`detail`	No	full
`provider`	No
`test_url`	No
`timeout_ms`	No
`browser_user_agent`	No
`save_storage_state`	No
`storage_state_path`	No

Schema Changelog

Changes observed during successful MCP inspections. Dates show when Glama detected each change.

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

A3.6/5.0

Behavior4/5

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

The description goes beyond annotations by disclosing that the tool opens publisher pages and may update filtered storage-state, and by listing behaviors it never performs. This is valuable context for a tool with readOnlyHint=false and idempotentHint=false, though 'filtered storage-state' is somewhat vague.

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

Conciseness5/5

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

Two sentences with no filler. The primary purpose is front-loaded, and the second sentence adds behavioral caveats efficiently. Every phrase contributes useful information.

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?

Given 7 optional parameters, no output schema, and low schema description coverage, the description is not complete enough for an agent to invoke the tool confidently. It omits return value/output expectations, explains no parameter semantics beyond provider and storage-state, and the side effects on storage-state are left underspecified.

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 0%, so the description must compensate for parameter meaning. It only implicitly clarifies that provider may select one or all providers and that storage-state may be updated, but it says nothing about detail, test_url, timeout_ms, browser_user_agent, save_storage_state, or storage_state_path.

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 states a clear verb ('live-check'), a specific resource ('shared browser HTML path'), and scope ('one provider or all browser providers'). It is distinguishable from siblings like fetch_paper or provider_status by its focus on the browser HTML path, though it does not name any sibling directly.

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

Usage Guidelines4/5

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

It clearly conveys when this tool is appropriate: when a live preflight of the browser HTML path is needed, for one or all providers. It also gives exclusions ('never runs PDF fallback, automatic authentication, or runtime installation'), which helps agents avoid misusing it, though it does not explicitly point to alternative sibling tools.

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

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