paper-fetch-mcp

Overview Schema Source Related Servers Score Discussions Admin

fetch_paper

Retrieve a paper's full-text Markdown, structured article, and metadata from DOI, URL, or title, with provenance, quality, and token estimates, so AI agents can read beyond abstracts.

Instructions

Fetch one paper as structured article, Markdown, and/or metadata with provenance, quality, trace, and token estimates. Defaults are modes=article+markdown, provider-default assets, metadata-only fallback enabled, include_refs=null, max_tokens=full_text, prefer_cache=false, no_download=false, artifact_mode=markdown-assets and save_markdown=false. The call may access remote services and write provider artifacts, assets, and an MCP cache sidecar. no_download=true suppresses those writes; save_markdown=true is an explicit separate write and returns a path instead of inline full text. artifact_mode=none suppresses provider artifacts but retains MCP cache semantics. asset_profile=none|body|all controls local assets; body/all may return bounded ImageContent. Use prefer_cache=true only with matching request semantics. Current provider/source/runtime/asset-default facts are at resource://paper-fetch/provider-catalog. Access controls and manual-auth boundaries are never bypassed.

Input Schema

TableJSON Schema

Name	Required	Default
`modes`	No
`query`	Yes
`strategy`	No
`max_tokens`	No	full_text
`no_download`	No
`download_dir`	No
`include_refs`	No
`prefer_cache`	No
`artifact_mode`	No	markdown-assets
`save_markdown`	No
`markdown_filename`	No
`markdown_output_dir`	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"
-}

Changed3 schema fields changedv6.0.1Aug 29, 2026

addedInput schema / properties / strategy / properties / require_full_size_body_assets

Added value: +{
+  "default": false,
+  "title": "Require Full Size Body Assets",
+  "type": "boolean"
+}

addedInput schema / properties / strategy / properties / require_local_body_assets

Added value: +{
+  "default": false,
+  "title": "Require Local Body Assets",
+  "type": "boolean"
+}

changedOutput schema / (root)

Previous value: -{
-  "$defs": {
-    "AcquisitionProvenanceOutput": {
-      "properties": {
-        "fallback_used": {
-          "type": "boolean"
-        },
-        "provider": {
-          "type": "string"
-        },
-        "representation": {
-          "type": "string"
-        },
-        "route": {
-          "type": "string"
-        },
-        "transport": {
-          "type": "string"
-        }
-      },
-      "type": "object"
-    },
-    "ArticleOutput": {
-      "properties": {
-        "acquisition": {
-          "anyOf": [
-            {
-              "$ref": "#/$defs/AcquisitionProvenanceOutput"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "assets": {
-          "items": {
-            "$ref": "#/$defs/AssetOutput"
-          },
-          "type": "array"
-        },
-        "doi": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "metadata": {
-          "$ref": "#/$defs/MetadataOutput"
-        },
-        "quality": {
-          "$ref": "#/$defs/QualityOutput"
-        },
-        "references": {
-          "items": {
-            "$ref": "#/$defs/ReferenceOutput"
-          },
-          "type": "array"
-        },
-        "sections": {
-          "items": {
-            "$ref": "#/$defs/SectionOutput"
-          },
-          "type": "array"
-        },
-        "source": {
-          "type": "string"
-        }
-      },
-      "type": "object"
-    },
-    "AssetByKindOutput": {
-      "properties": {
-        "decoration": {
-          "$ref": "#/$defs/AssetKindSummaryOutput"
-        },
-        "figure": {
-          "$ref": "#/$defs/AssetKindSummaryOutput"
-        },
-        "formula": {
-          "$ref": "#/$defs/AssetKindSummaryOutput"
-        },
-        "supplement": {
-          "$ref": "#/$defs/AssetKindSummaryOutput"
-        },
-        "table": {
-          "$ref": "#/$defs/AssetKindSummaryOutput"
-        }
-      },
-      "type": "object"
-    },
-    "AssetDiagnosticOutput": {
-      "properties": {
-        "byte_count": {
-          "anyOf": [
-            {
-              "type": "integer"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "download_tier": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "failure_code": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "height": {
-          "anyOf": [
-            {
-              "type": "integer"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "kind": {
-          "type": "string"
-        },
-        "path": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "preview_accepted": {
-          "type": "boolean"
-        },
-        "provenance": {
-          "items": {
-            "type": "string"
-          },
-          "type": "array"
-        },
-        "real_mime": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "request_profile": {
-          "type": "string"
-        },
-        "sha256": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "status": {
-          "type": "string"
-        },
-        "suspected_reasons": {
-          "items": {
-            "type": "string"
-          },
-          "type": "array"
-        },
-        "width": {
-          "anyOf": [
-            {
-              "type": "integer"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        }
-      },
-      "type": "object"
-    },
-    "AssetFailureOutput": {
-      "properties": {
-        "body_snippet": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "caption": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "content_type": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "final_url": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "heading": {
-          "type": "string"
-        },
-        "kind": {
-          "type": "string"
-        },
-        "reason": {
-          "type": "string"
-        },
-        "recovery_attempts": {
-          "items": {
-            "additionalProperties": true,
-            "type": "object"
-          },
-          "type": "array"
-        },
-        "section": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "source_url": {
-          "type": "string"
-        },
-        "status": {
-          "anyOf": [
-            {
-              "type": "integer"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "title_snippet": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        }
-      },
-      "type": "object"
-    },
-    "AssetKindSummaryOutput": {
-      "properties": {
-        "accepted_preview": {
-          "type": "integer"
-        },
-        "failed": {
-          "type": "integer"
-        },
-        "fallback_preview": {
-          "type": "integer"
-        },
-        "full_size": {
-          "type": "integer"
-        },
-        "not_archived": {
-          "type": "integer"
-        },
-        "not_requested": {
-          "type": "integer"
-        },
-        "placeholder_suspected": {
-          "type": "integer"
-        },
-        "preview": {
-          "type": "integer"
-        },
-        "requested": {
-          "type": "integer"
-        },
-        "total": {
-          "type": "integer"
-        }
-      },
-      "type": "object"
-    },
-    "AssetOutput": {
-      "properties": {
-        "anchor_key": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "caption": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "content_type": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "download_tier": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "download_url": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "downloaded_bytes": {
-          "anyOf": [
-            {
-              "type": "integer"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "heading": {
-          "type": "string"
-        },
-        "height": {
-          "anyOf": [
-            {
-              "type": "integer"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "kind": {
-          "type": "string"
-        },
-        "original_url": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "path": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "preview_accepted": {
-          "type": "boolean"
-        },
-        "provenance": {
-          "items": {
-            "type": "string"
-          },
-          "type": "array"
-        },
-        "render_state": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "section": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "source_href": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "source_path": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "source_url": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "url": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "width": {
-          "anyOf": [
-            {
-              "type": "integer"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        }
-      },
-      "type": "object"
-    },
-    "AssetQualitySummaryOutput": {
-      "properties": {
-        "accepted_preview": {
-          "type": "integer"
-        },
-        "audited": {
-          "type": "boolean"
-        },
-        "by_kind": {
-          "$ref": "#/$defs/AssetByKindOutput"
-        },
-        "diagnostics": {
-          "items": {
-            "$ref": "#/$defs/AssetDiagnosticOutput"
-          },
-          "type": "array"
-        },
-        "failed": {
-          "type": "integer"
-        },
-        "failure_codes": {
-          "items": {
-            "type": "string"
-          },
-          "type": "array"
-        },
-        "fallback_preview": {
-          "type": "integer"
-        },
-        "full_size": {
-          "type": "integer"
-        },
-        "issue_codes": {
-          "items": {
-            "type": "string"
-          },
-          "type": "array"
-        },
-        "local": {
-          "type": "integer"
-        },
-        "not_archived": {
-          "type": "integer"
-        },
-        "not_requested": {
-          "type": "integer"
-        },
-        "placeholder_suspected": {
-          "type": "integer"
-        },
-        "preview": {
-          "type": "integer"
-        },
-        "profile": {
-          "type": "string"
-        },
-        "remote_link_count": {
-          "type": "integer"
-        },
-        "remote_only_count": {
-          "type": "integer"
-        },
-        "requested": {
-          "type": "boolean"
-        },
-        "total": {
-          "type": "integer"
-        }
-      },
-      "type": "object"
-    },
-    "BodyMetricsOutput": {
-      "properties": {
-        "body_block_count": {
-          "type": "integer"
-        },
-        "body_heading_count": {
-          "type": "integer"
-        },
-        "body_to_abstract_ratio": {
-          "type": "number"
-        },
-        "char_count": {
-          "type": "integer"
-        },
-        "explicit_body_container": {
-          "type": "boolean"
-        },
-        "figure_count": {
-          "type": "integer"
-        },
-        "post_abstract_body_run": {
-          "type": "boolean"
-        },
-        "word_count": {
-          "type": "integer"
-        }
-      },
-      "type": "object"
-    },
-    "FetchAcceptanceSummaryOutput": {
-      "properties": {
-        "acquisition": {
-          "anyOf": [
-            {
-              "$ref": "#/$defs/AcquisitionProvenanceOutput"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "asset": {
-          "type": "string"
-        },
-        "content": {
-          "type": "string"
-        },
-        "fetch": {
-          "type": "string"
-        },
-        "has_abstract": {
-          "type": "boolean"
-        },
-        "has_fulltext": {
-          "type": "boolean"
-        },
-        "identity": {
-          "type": "string"
-        },
-        "output": {
-          "type": "string"
-        },
-        "overall": {
-          "type": "string"
-        },
-        "provenance": {
-          "type": "string"
-        },
-        "token_estimate": {
-          "type": "integer"
-        }
-      },
-      "type": "object"
-    },
-    "MetadataOutput": {
-      "properties": {
-        "abstract": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "article_type": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "authors": {
-          "items": {
-            "type": "string"
-          },
-          "type": "array"
-        },
-        "journal": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "keywords": {
-          "items": {
-            "type": "string"
-          },
-          "type": "array"
-        },
-        "landing_page_url": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "license_urls": {
-          "items": {
-            "type": "string"
-          },
-          "type": "array"
-        },
-        "published": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "title": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        }
-      },
-      "type": "object"
-    },
-    "QualityOutput": {
-      "properties": {
-        "asset_failures": {
-          "items": {
-            "$ref": "#/$defs/AssetFailureOutput"
-          },
-          "type": "array"
-        },
-        "asset_summary": {
-          "$ref": "#/$defs/AssetQualitySummaryOutput"
-        },
-        "body_metrics": {
-          "$ref": "#/$defs/BodyMetricsOutput"
-        },
-        "confidence": {
-          "type": "string"
-        },
-        "content_kind": {
-          "type": "string"
-        },
-        "extraction_revision": {
-          "type": "integer"
-        },
-        "flags": {
-          "items": {
-            "type": "string"
-          },
-          "type": "array"
-        },
-        "has_abstract": {
-          "type": "boolean"
-        },
-        "has_fulltext": {
-          "type": "boolean"
-        },
-        "semantic_losses": {
-          "$ref": "#/$defs/SemanticLossesOutput"
-        },
-        "source_trail": {
-          "items": {
-            "type": "string"
-          },
-          "type": "array"
-        },
-        "token_estimate": {
-          "type": "integer"
-        },
-        "token_estimate_breakdown": {
-          "$ref": "#/$defs/TokenEstimateBreakdownOutput"
-        },
-        "warnings": {
-          "items": {
-            "type": "string"
-          },
-          "type": "array"
-        }
-      },
-      "type": "object"
-    },
-    "ReferenceOutput": {
-      "properties": {
-        "doi": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "raw": {
-          "type": "string"
-        },
-        "title": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "year": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        }
-      },
-      "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"
-    },
-    "SectionOutput": {
-      "properties": {
-        "heading": {
-          "type": "string"
-        },
-        "kind": {
-          "type": "string"
-        },
-        "level": {
-          "type": "integer"
-        },
-        "text": {
-          "type": "string"
-        }
-      },
-      "type": "object"
-    },
-    "SemanticLossesOutput": {
-      "properties": {
-        "formula_fallback_count": {
-          "type": "integer"
-        },
-        "formula_missing_count": {
-          "type": "integer"
-        },
-        "table_fallback_count": {
-          "type": "integer"
-        },
-        "table_layout_degraded_count": {
-          "type": "integer"
-        },
-        "table_lossy_count": {
-          "type": "integer"
-        },
-        "table_semantic_loss_count": {
-          "type": "integer"
-        }
-      },
-      "type": "object"
-    },
-    "TokenEstimateBreakdownOutput": {
-      "properties": {
-        "abstract": {
-          "type": "integer"
-        },
-        "body": {
-          "type": "integer"
-        },
-        "refs": {
-          "type": "integer"
-        }
-      },
-      "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": {
-    "acceptance": {
-      "$ref": "#/$defs/FetchAcceptanceSummaryOutput"
-    },
-    "acquisition": {
-      "anyOf": [
-        {
-          "$ref": "#/$defs/AcquisitionProvenanceOutput"
-        },
-        {
-          "type": "null"
-        }
-      ]
-    },
-    "article": {
-      "anyOf": [
-        {
-          "$ref": "#/$defs/ArticleOutput"
-        },
-        {
-          "type": "null"
-        }
-      ]
-    },
-    "candidates": {
-      "anyOf": [
-        {
-          "items": {
-            "$ref": "#/$defs/ResolvedCandidateOutput"
-          },
-          "type": "array"
-        },
-        {
-          "type": "null"
-        }
-      ]
-    },
-    "code": {
-      "anyOf": [
-        {
-          "type": "string"
-        },
-        {
-          "type": "null"
-        }
-      ]
-    },
-    "content_kind": {
-      "type": "string"
-    },
-    "details": {
-      "additionalProperties": true,
-      "type": "object"
-    },
-    "diagnostic_artifacts": {
-      "items": {
-        "additionalProperties": true,
-        "type": "object"
-      },
-      "type": "array"
-    },
-    "doi": {
-      "anyOf": [
-        {
-          "type": "string"
-        },
-        {
-          "type": "null"
-        }
-      ]
-    },
-    "error_category": {
-      "anyOf": [
-        {
-          "type": "string"
-        },
-        {
-          "type": "null"
-        }
-      ]
-    },
-    "has_abstract": {
-      "type": "boolean"
-    },
-    "has_fulltext": {
-      "type": "boolean"
-    },
-    "http_status": {
-      "anyOf": [
-        {
-          "type": "integer"
-        },
-        {
-          "type": "null"
-        }
-      ]
-    },
-    "markdown": {
-      "anyOf": [
-        {
-          "type": "string"
-        },
-        {
-          "type": "null"
-        }
-      ]
-    },
-    "metadata": {
-      "anyOf": [
-        {
-          "$ref": "#/$defs/MetadataOutput"
-        },
-        {
-          "type": "null"
-        }
-      ]
-    },
-    "missing_env": {
-      "anyOf": [
-        {
-          "items": {
-            "type": "string"
-          },
-          "type": "array"
-        },
-        {
-          "type": "null"
-        }
-      ]
-    },
-    "provider": {
-      "anyOf": [
-        {
-          "type": "string"
-        },
-        {
-          "type": "null"
-        }
-      ]
-    },
-    "quality": {
-      "$ref": "#/$defs/QualityOutput"
-    },
-    "reason": {
-      "type": "string"
-    },
-    "retry_after_seconds": {
-      "anyOf": [
-        {
-          "type": "integer"
-        },
-        {
-          "type": "null"
-        }
-      ]
-    },
-    "retryable": {
-      "anyOf": [
-        {
-          "type": "boolean"
-        },
-        {
-          "type": "null"
-        }
-      ]
-    },
-    "route": {
-      "anyOf": [
-        {
-          "type": "string"
-        },
-        {
-          "type": "null"
-        }
-      ]
-    },
-    "saved_markdown_path": {
-      "anyOf": [
-        {
-          "type": "string"
-        },
-        {
-          "type": "null"
-        }
-      ]
-    },
-    "schema_version": {
-      "type": "integer"
-    },
-    "source": {
-      "type": "string"
-    },
-    "source_trail": {
-      "items": {
-        "type": "string"
-      },
-      "type": "array"
-    },
-    "stage": {
-      "anyOf": [
-        {
-          "type": "string"
-        },
-        {
-          "type": "null"
-        }
-      ]
-    },
-    "status": {
-      "type": "string"
-    },
-    "token_estimate": {
-      "type": "integer"
-    },
-    "token_estimate_breakdown": {
-      "$ref": "#/$defs/TokenEstimateBreakdownOutput"
-    },
-    "trace": {
-      "items": {
-        "$ref": "#/$defs/TraceEventOutput"
-      },
-      "type": "array"
-    },
-    "warnings": {
-      "items": {
-        "type": "string"
-      },
-      "type": "array"
-    }
-  },
-  "type": "object"
-}New value: +null

Changed4 schema fields changedv5.5.0Aug 26, 2026

addedOutput schema / $defs / AcquisitionProvenanceOutput

Added value: +{
+  "properties": {
+    "fallback_used": {
+      "type": "boolean"
+    },
+    "provider": {
+      "type": "string"
+    },
+    "representation": {
+      "type": "string"
+    },
+    "route": {
+      "type": "string"
+    },
+    "transport": {
+      "type": "string"
+    }
+  },
+  "type": "object"
+}

addedOutput schema / $defs / ArticleOutput / properties / acquisition

Added value: +{
+  "anyOf": [
+    {
+      "$ref": "#/$defs/AcquisitionProvenanceOutput"
+    },
+    {
+      "type": "null"
+    }
+  ]
+}

addedOutput schema / $defs / FetchAcceptanceSummaryOutput / properties / acquisition

Added value: +{
+  "anyOf": [
+    {
+      "$ref": "#/$defs/AcquisitionProvenanceOutput"
+    },
+    {
+      "type": "null"
+    }
+  ]
+}

addedOutput schema / properties / acquisition

Added value: +{
+  "anyOf": [
+    {
+      "$ref": "#/$defs/AcquisitionProvenanceOutput"
+    },
+    {
+      "type": "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"
+}

Changed12 schema fields changedv5.2.0Aug 7, 2026

addedOutput schema / $defs / AssetDiagnosticOutput / properties / preview_accepted
```
Added value: +{
+  "type": "boolean"
+}
```
addedOutput schema / $defs / AssetKindSummaryOutput / properties / accepted_preview
```
Added value: +{
+  "type": "integer"
+}
```
addedOutput schema / $defs / AssetKindSummaryOutput / properties / fallback_preview
```
Added value: +{
+  "type": "integer"
+}
```
addedOutput schema / $defs / AssetOutput / properties / preview_accepted
```
Added value: +{
+  "type": "boolean"
+}
```
addedOutput schema / $defs / AssetQualitySummaryOutput / properties / accepted_preview
```
Added value: +{
+  "type": "integer"
+}
```
addedOutput schema / $defs / AssetQualitySummaryOutput / properties / fallback_preview
```
Added value: +{
+  "type": "integer"
+}
```

addedOutput schema / $defs / AssetQualitySummaryOutput / properties / issue_codes

Added value: +{
+  "items": {
+    "type": "string"
+  },
+  "type": "array"
+}

addedOutput schema / $defs / FetchAcceptanceSummaryOutput

Added value: +{
+  "properties": {
+    "asset": {
+      "type": "string"
+    },
+    "content": {
+      "type": "string"
+    },
+    "fetch": {
+      "type": "string"
+    },
+    "has_abstract": {
+      "type": "boolean"
+    },
+    "has_fulltext": {
+      "type": "boolean"
+    },
+    "identity": {
+      "type": "string"
+    },
+    "output": {
+      "type": "string"
+    },
+    "overall": {
+      "type": "string"
+    },
+    "provenance": {
+      "type": "string"
+    },
+    "token_estimate": {
+      "type": "integer"
+    }
+  },
+  "type": "object"
+}

addedOutput schema / $defs / MetadataOutput / properties / article_type

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

removedOutput schema / $defs / QualityOutput / properties / trace

Removed value: -{
-  "items": {
-    "$ref": "#/$defs/TraceEventOutput"
-  },
-  "type": "array"
-}

addedOutput schema / properties / acceptance

Added value: +{
+  "$ref": "#/$defs/FetchAcceptanceSummaryOutput"
+}

addedOutput schema / properties / diagnostic_artifacts

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

Changed214 schema fields changedv4.1.0Jul 30, 2026
- removedOutput schema / $defs / ArticleOutput / properties / assets / title
```
Removed value: -"Assets"
```
- removedOutput schema / $defs / ArticleOutput / properties / doi / title
```
Removed value: -"Doi"
```
- removedOutput schema / $defs / ArticleOutput / properties / references / title
```
Removed value: -"References"
```
- removedOutput schema / $defs / ArticleOutput / properties / sections / title
```
Removed value: -"Sections"
```
- removedOutput schema / $defs / ArticleOutput / properties / source / title
```
Removed value: -"Source"
```
- removedOutput schema / $defs / ArticleOutput / title
```
Removed value: -"ArticleOutput"
```
- removedOutput schema / $defs / AssetByKindOutput / title
```
Removed value: -"AssetByKindOutput"
```
- removedOutput schema / $defs / AssetDiagnosticOutput / properties / byte_count / title
```
Removed value: -"Byte Count"
```
- removedOutput schema / $defs / AssetDiagnosticOutput / properties / download_tier / title
```
Removed value: -"Download Tier"
```
- removedOutput schema / $defs / AssetDiagnosticOutput / properties / failure_code / title
```
Removed value: -"Failure Code"
```
- removedOutput schema / $defs / AssetDiagnosticOutput / properties / height / title
```
Removed value: -"Height"
```
- removedOutput schema / $defs / AssetDiagnosticOutput / properties / kind / title
```
Removed value: -"Kind"
```
- removedOutput schema / $defs / AssetDiagnosticOutput / properties / path / title
```
Removed value: -"Path"
```
- removedOutput schema / $defs / AssetDiagnosticOutput / properties / provenance / title
```
Removed value: -"Provenance"
```
- removedOutput schema / $defs / AssetDiagnosticOutput / properties / real_mime / title
```
Removed value: -"Real Mime"
```
- removedOutput schema / $defs / AssetDiagnosticOutput / properties / request_profile / title
```
Removed value: -"Request Profile"
```
- removedOutput schema / $defs / AssetDiagnosticOutput / properties / sha256 / title
```
Removed value: -"Sha256"
```
- removedOutput schema / $defs / AssetDiagnosticOutput / properties / status / title
```
Removed value: -"Status"
```
- removedOutput schema / $defs / AssetDiagnosticOutput / properties / suspected_reasons / title
```
Removed value: -"Suspected Reasons"
```
- removedOutput schema / $defs / AssetDiagnosticOutput / properties / width / title
```
Removed value: -"Width"
```
- removedOutput schema / $defs / AssetDiagnosticOutput / title
```
Removed value: -"AssetDiagnosticOutput"
```
- removedOutput schema / $defs / AssetFailureOutput / properties / body_snippet / title
```
Removed value: -"Body Snippet"
```
- removedOutput schema / $defs / AssetFailureOutput / properties / caption / title
```
Removed value: -"Caption"
```
- removedOutput schema / $defs / AssetFailureOutput / properties / content_type / title
```
Removed value: -"Content Type"
```
- removedOutput schema / $defs / AssetFailureOutput / properties / final_url / title
```
Removed value: -"Final Url"
```
- removedOutput schema / $defs / AssetFailureOutput / properties / heading / title
```
Removed value: -"Heading"
```
- removedOutput schema / $defs / AssetFailureOutput / properties / kind / title
```
Removed value: -"Kind"
```
- removedOutput schema / $defs / AssetFailureOutput / properties / reason / title
```
Removed value: -"Reason"
```
- removedOutput schema / $defs / AssetFailureOutput / properties / recovery_attempts / title
```
Removed value: -"Recovery Attempts"
```
- removedOutput schema / $defs / AssetFailureOutput / properties / section / title
```
Removed value: -"Section"
```
- removedOutput schema / $defs / AssetFailureOutput / properties / source_url / title
```
Removed value: -"Source Url"
```
- removedOutput schema / $defs / AssetFailureOutput / properties / status / title
```
Removed value: -"Status"
```
- removedOutput schema / $defs / AssetFailureOutput / properties / title_snippet / title
```
Removed value: -"Title Snippet"
```
- removedOutput schema / $defs / AssetFailureOutput / title
```
Removed value: -"AssetFailureOutput"
```
- removedOutput schema / $defs / AssetKindSummaryOutput / properties / failed / title
```
Removed value: -"Failed"
```
- removedOutput schema / $defs / AssetKindSummaryOutput / properties / full_size / title
```
Removed value: -"Full Size"
```
- removedOutput schema / $defs / AssetKindSummaryOutput / properties / not_archived / title
```
Removed value: -"Not Archived"
```
- removedOutput schema / $defs / AssetKindSummaryOutput / properties / not_requested / title
```
Removed value: -"Not Requested"
```
- removedOutput schema / $defs / AssetKindSummaryOutput / properties / placeholder_suspected / title
```
Removed value: -"Placeholder Suspected"
```
- removedOutput schema / $defs / AssetKindSummaryOutput / properties / preview / title
```
Removed value: -"Preview"
```
- removedOutput schema / $defs / AssetKindSummaryOutput / properties / requested / title
```
Removed value: -"Requested"
```
- removedOutput schema / $defs / AssetKindSummaryOutput / properties / total / title
```
Removed value: -"Total"
```
- removedOutput schema / $defs / AssetKindSummaryOutput / title
```
Removed value: -"AssetKindSummaryOutput"
```
- removedOutput schema / $defs / AssetOutput / properties / anchor_key / title
```
Removed value: -"Anchor Key"
```
- removedOutput schema / $defs / AssetOutput / properties / caption / title
```
Removed value: -"Caption"
```
- removedOutput schema / $defs / AssetOutput / properties / content_type / title
```
Removed value: -"Content Type"
```
- removedOutput schema / $defs / AssetOutput / properties / download_tier / title
```
Removed value: -"Download Tier"
```
- removedOutput schema / $defs / AssetOutput / properties / download_url / title
```
Removed value: -"Download Url"
```
- removedOutput schema / $defs / AssetOutput / properties / downloaded_bytes / title
```
Removed value: -"Downloaded Bytes"
```
- removedOutput schema / $defs / AssetOutput / properties / heading / title
```
Removed value: -"Heading"
```
- removedOutput schema / $defs / AssetOutput / properties / height / title
```
Removed value: -"Height"
```
- removedOutput schema / $defs / AssetOutput / properties / kind / title
```
Removed value: -"Kind"
```
- removedOutput schema / $defs / AssetOutput / properties / original_url / title
```
Removed value: -"Original Url"
```
- removedOutput schema / $defs / AssetOutput / properties / path / title
```
Removed value: -"Path"
```
- removedOutput schema / $defs / AssetOutput / properties / provenance / title
```
Removed value: -"Provenance"
```
- removedOutput schema / $defs / AssetOutput / properties / render_state / title
```
Removed value: -"Render State"
```
- removedOutput schema / $defs / AssetOutput / properties / section / title
```
Removed value: -"Section"
```
- removedOutput schema / $defs / AssetOutput / properties / source_href / title
```
Removed value: -"Source Href"
```
- removedOutput schema / $defs / AssetOutput / properties / source_path / title
```
Removed value: -"Source Path"
```
- removedOutput schema / $defs / AssetOutput / properties / source_url / title
```
Removed value: -"Source Url"
```
- removedOutput schema / $defs / AssetOutput / properties / url / title
```
Removed value: -"Url"
```
- removedOutput schema / $defs / AssetOutput / properties / width / title
```
Removed value: -"Width"
```
- removedOutput schema / $defs / AssetOutput / title
```
Removed value: -"AssetOutput"
```
- removedOutput schema / $defs / AssetQualitySummaryOutput / properties / audited / title
```
Removed value: -"Audited"
```
- removedOutput schema / $defs / AssetQualitySummaryOutput / properties / diagnostics / title
```
Removed value: -"Diagnostics"
```
- removedOutput schema / $defs / AssetQualitySummaryOutput / properties / failed / title
```
Removed value: -"Failed"
```
- removedOutput schema / $defs / AssetQualitySummaryOutput / properties / failure_codes / title
```
Removed value: -"Failure Codes"
```
- removedOutput schema / $defs / AssetQualitySummaryOutput / properties / full_size / title
```
Removed value: -"Full Size"
```
- removedOutput schema / $defs / AssetQualitySummaryOutput / properties / local / title
```
Removed value: -"Local"
```
- removedOutput schema / $defs / AssetQualitySummaryOutput / properties / not_archived / title
```
Removed value: -"Not Archived"
```
- removedOutput schema / $defs / AssetQualitySummaryOutput / properties / not_requested / title
```
Removed value: -"Not Requested"
```
- removedOutput schema / $defs / AssetQualitySummaryOutput / properties / placeholder_suspected / title
```
Removed value: -"Placeholder Suspected"
```
- removedOutput schema / $defs / AssetQualitySummaryOutput / properties / preview / title
```
Removed value: -"Preview"
```
- removedOutput schema / $defs / AssetQualitySummaryOutput / properties / profile / title
```
Removed value: -"Profile"
```
- removedOutput schema / $defs / AssetQualitySummaryOutput / properties / remote_link_count / title
```
Removed value: -"Remote Link Count"
```
- removedOutput schema / $defs / AssetQualitySummaryOutput / properties / remote_only_count / title
```
Removed value: -"Remote Only Count"
```
- removedOutput schema / $defs / AssetQualitySummaryOutput / properties / requested / title
```
Removed value: -"Requested"
```
- removedOutput schema / $defs / AssetQualitySummaryOutput / properties / total / title
```
Removed value: -"Total"
```
- removedOutput schema / $defs / AssetQualitySummaryOutput / title
```
Removed value: -"AssetQualitySummaryOutput"
```
- removedOutput schema / $defs / BodyMetricsOutput / properties / body_block_count / title
```
Removed value: -"Body Block Count"
```
- removedOutput schema / $defs / BodyMetricsOutput / properties / body_heading_count / title
```
Removed value: -"Body Heading Count"
```
- removedOutput schema / $defs / BodyMetricsOutput / properties / body_to_abstract_ratio / title
```
Removed value: -"Body To Abstract Ratio"
```
- removedOutput schema / $defs / BodyMetricsOutput / properties / char_count / title
```
Removed value: -"Char Count"
```
- removedOutput schema / $defs / BodyMetricsOutput / properties / explicit_body_container / title
```
Removed value: -"Explicit Body Container"
```
- removedOutput schema / $defs / BodyMetricsOutput / properties / figure_count / title
```
Removed value: -"Figure Count"
```
- removedOutput schema / $defs / BodyMetricsOutput / properties / post_abstract_body_run / title
```
Removed value: -"Post Abstract Body Run"
```
- removedOutput schema / $defs / BodyMetricsOutput / properties / word_count / title
```
Removed value: -"Word Count"
```
- removedOutput schema / $defs / BodyMetricsOutput / title
```
Removed value: -"BodyMetricsOutput"
```
- removedOutput schema / $defs / MetadataOutput / properties / abstract / title
```
Removed value: -"Abstract"
```
- removedOutput schema / $defs / MetadataOutput / properties / authors / title
```
Removed value: -"Authors"
```
- removedOutput schema / $defs / MetadataOutput / properties / journal / title
```
Removed value: -"Journal"
```
- removedOutput schema / $defs / MetadataOutput / properties / keywords / title
```
Removed value: -"Keywords"
```
- removedOutput schema / $defs / MetadataOutput / properties / landing_page_url / title
```
Removed value: -"Landing Page Url"
```
- removedOutput schema / $defs / MetadataOutput / properties / license_urls / title
```
Removed value: -"License Urls"
```
- removedOutput schema / $defs / MetadataOutput / properties / published / title
```
Removed value: -"Published"
```
- removedOutput schema / $defs / MetadataOutput / properties / title / title
```
Removed value: -"Title"
```
- removedOutput schema / $defs / MetadataOutput / title
```
Removed value: -"MetadataOutput"
```
- removedOutput schema / $defs / QualityOutput / properties / asset_failures / title
```
Removed value: -"Asset Failures"
```
- removedOutput schema / $defs / QualityOutput / properties / confidence / title
```
Removed value: -"Confidence"
```
- removedOutput schema / $defs / QualityOutput / properties / content_kind / title
```
Removed value: -"Content Kind"
```
- removedOutput schema / $defs / QualityOutput / properties / extraction_revision / title
```
Removed value: -"Extraction Revision"
```
- removedOutput schema / $defs / QualityOutput / properties / flags / title
```
Removed value: -"Flags"
```
- removedOutput schema / $defs / QualityOutput / properties / has_abstract / title
```
Removed value: -"Has Abstract"
```
- removedOutput schema / $defs / QualityOutput / properties / has_fulltext / title
```
Removed value: -"Has Fulltext"
```
- removedOutput schema / $defs / QualityOutput / properties / source_trail / title
```
Removed value: -"Source Trail"
```
- removedOutput schema / $defs / QualityOutput / properties / token_estimate / title
```
Removed value: -"Token Estimate"
```
- removedOutput schema / $defs / QualityOutput / properties / trace / title
```
Removed value: -"Trace"
```
- removedOutput schema / $defs / QualityOutput / properties / warnings / title
```
Removed value: -"Warnings"
```
- removedOutput schema / $defs / QualityOutput / title
```
Removed value: -"QualityOutput"
```
- removedOutput schema / $defs / ReferenceOutput / properties / doi / title
```
Removed value: -"Doi"
```
- removedOutput schema / $defs / ReferenceOutput / properties / raw / title
```
Removed value: -"Raw"
```
- removedOutput schema / $defs / ReferenceOutput / properties / title / title
```
Removed value: -"Title"
```
- removedOutput schema / $defs / ReferenceOutput / properties / year / title
```
Removed value: -"Year"
```
- removedOutput schema / $defs / ReferenceOutput / title
```
Removed value: -"ReferenceOutput"
```
- 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"
```
- removedOutput schema / $defs / SectionOutput / properties / heading / title
```
Removed value: -"Heading"
```
- removedOutput schema / $defs / SectionOutput / properties / kind / title
```
Removed value: -"Kind"
```
- removedOutput schema / $defs / SectionOutput / properties / level / title
```
Removed value: -"Level"
```
- removedOutput schema / $defs / SectionOutput / properties / text / title
```
Removed value: -"Text"
```
- removedOutput schema / $defs / SectionOutput / title
```
Removed value: -"SectionOutput"
```
- removedOutput schema / $defs / SemanticLossesOutput / properties / formula_fallback_count / title
```
Removed value: -"Formula Fallback Count"
```
- removedOutput schema / $defs / SemanticLossesOutput / properties / formula_missing_count / title
```
Removed value: -"Formula Missing Count"
```
- removedOutput schema / $defs / SemanticLossesOutput / properties / table_fallback_count / title
```
Removed value: -"Table Fallback Count"
```
- removedOutput schema / $defs / SemanticLossesOutput / properties / table_layout_degraded_count / title
```
Removed value: -"Table Layout Degraded Count"
```
- removedOutput schema / $defs / SemanticLossesOutput / properties / table_lossy_count / title
```
Removed value: -"Table Lossy Count"
```
- removedOutput schema / $defs / SemanticLossesOutput / properties / table_semantic_loss_count / title
```
Removed value: -"Table Semantic Loss Count"
```
- removedOutput schema / $defs / SemanticLossesOutput / title
```
Removed value: -"SemanticLossesOutput"
```
- removedOutput schema / $defs / TokenEstimateBreakdownOutput / properties / abstract / title
```
Removed value: -"Abstract"
```
- removedOutput schema / $defs / TokenEstimateBreakdownOutput / properties / body / title
```
Removed value: -"Body"
```
- removedOutput schema / $defs / TokenEstimateBreakdownOutput / properties / refs / title
```
Removed value: -"Refs"
```
- removedOutput schema / $defs / TokenEstimateBreakdownOutput / title
```
Removed value: -"TokenEstimateBreakdownOutput"
```
- addedOutput schema / $defs / TraceEventOutput / properties / attempt
```
Added value: +{
+  "anyOf": [
+    {
+      "type": "integer"
+    },
+    {
+      "type": "null"
+    }
+  ]
+}
```
- addedOutput schema / $defs / TraceEventOutput / properties / attempt_id
```
Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "null"
+    }
+  ]
+}
```
- removedOutput schema / $defs / TraceEventOutput / properties / code / title
```
Removed value: -"Code"
```
- removedOutput schema / $defs / TraceEventOutput / properties / component / title
```
Removed value: -"Component"
```
- addedOutput schema / $defs / TraceEventOutput / properties / duration_ms
```
Added value: +{
+  "anyOf": [
+    {
+      "type": "number"
+    },
+    {
+      "type": "null"
+    }
+  ]
+}
```
- addedOutput schema / $defs / TraceEventOutput / properties / error_category
```
Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "null"
+    }
+  ]
+}
```
- addedOutput schema / $defs / TraceEventOutput / properties / finished_at
```
Added value: +{
+  "anyOf": [
+    {
+      "type": "number"
+    },
+    {
+      "type": "null"
+    }
+  ]
+}
```
- addedOutput schema / $defs / TraceEventOutput / properties / http_status
```
Added value: +{
+  "anyOf": [
+    {
+      "type": "integer"
+    },
+    {
+      "type": "null"
+    }
+  ]
+}
```
- removedOutput schema / $defs / TraceEventOutput / properties / message / title
```
Removed value: -"Message"
```
- removedOutput schema / $defs / TraceEventOutput / properties / outcome / title
```
Removed value: -"Outcome"
```
- addedOutput schema / $defs / TraceEventOutput / properties / parent_span_id
```
Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "null"
+    }
+  ]
+}
```
- addedOutput schema / $defs / TraceEventOutput / properties / provider
```
Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "null"
+    }
+  ]
+}
```
- addedOutput schema / $defs / TraceEventOutput / properties / retry_after_seconds
```
Added value: +{
+  "anyOf": [
+    {
+      "type": "integer"
+    },
+    {
+      "type": "null"
+    }
+  ]
+}
```
- addedOutput schema / $defs / TraceEventOutput / properties / retryable
```
Added value: +{
+  "anyOf": [
+    {
+      "type": "boolean"
+    },
+    {
+      "type": "null"
+    }
+  ]
+}
```
- addedOutput schema / $defs / TraceEventOutput / properties / route
```
Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "null"
+    }
+  ]
+}
```
- addedOutput schema / $defs / TraceEventOutput / properties / span_id
```
Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "null"
+    }
+  ]
+}
```
- removedOutput schema / $defs / TraceEventOutput / properties / stage / title
```
Removed value: -"Stage"
```
- addedOutput schema / $defs / TraceEventOutput / properties / started_at
```
Added value: +{
+  "anyOf": [
+    {
+      "type": "number"
+    },
+    {
+      "type": "null"
+    }
+  ]
+}
```
- addedOutput schema / $defs / TraceEventOutput / properties / target
```
Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "null"
+    }
+  ]
+}
```
- addedOutput schema / $defs / TraceEventOutput / properties / target_sha256
```
Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "null"
+    }
+  ]
+}
```
- removedOutput schema / $defs / TraceEventOutput / title
```
Removed value: -"TraceEventOutput"
```
- removedOutput schema / properties / article / default
```
Removed value: -null
```
- 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 / content_kind / default
```
Removed value: -null
```
- removedOutput schema / properties / content_kind / title
```
Removed value: -"Content Kind"
```
- addedOutput schema / properties / details
```
Added value: +{
+  "additionalProperties": true,
+  "type": "object"
+}
```
- removedOutput schema / properties / doi / default
```
Removed value: -null
```
- removedOutput schema / properties / doi / title
```
Removed value: -"Doi"
```
- removedOutput schema / properties / error_category / default
```
Removed value: -null
```
- removedOutput schema / properties / error_category / title
```
Removed value: -"Error Category"
```
- removedOutput schema / properties / has_abstract / default
```
Removed value: -null
```
- removedOutput schema / properties / has_abstract / title
```
Removed value: -"Has Abstract"
```
- removedOutput schema / properties / has_fulltext / default
```
Removed value: -null
```
- removedOutput schema / properties / has_fulltext / title
```
Removed value: -"Has Fulltext"
```
- removedOutput schema / properties / http_status / default
```
Removed value: -null
```
- removedOutput schema / properties / http_status / title
```
Removed value: -"Http Status"
```
- removedOutput schema / properties / markdown / default
```
Removed value: -null
```
- removedOutput schema / properties / markdown / title
```
Removed value: -"Markdown"
```
- removedOutput schema / properties / metadata / default
```
Removed value: -null
```
- removedOutput schema / properties / missing_env / default
```
Removed value: -null
```
- removedOutput schema / properties / missing_env / title
```
Removed value: -"Missing Env"
```
- removedOutput schema / properties / provider / default
```
Removed value: -null
```
- removedOutput schema / properties / provider / title
```
Removed value: -"Provider"
```
- removedOutput schema / properties / quality / default
```
Removed value: -null
```
- removedOutput schema / properties / reason / default
```
Removed value: -null
```
- removedOutput schema / properties / reason / title
```
Removed value: -"Reason"
```
- 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 / saved_markdown_path / default
```
Removed value: -null
```
- removedOutput schema / properties / saved_markdown_path / title
```
Removed value: -"Saved Markdown Path"
```
- removedOutput schema / properties / schema_version / default
```
Removed value: -null
```
- removedOutput schema / properties / schema_version / title
```
Removed value: -"Schema Version"
```
- removedOutput schema / properties / source / default
```
Removed value: -null
```
- removedOutput schema / properties / source / title
```
Removed value: -"Source"
```
- 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 / token_estimate / default
```
Removed value: -null
```
- removedOutput schema / properties / token_estimate / title
```
Removed value: -"Token Estimate"
```
- removedOutput schema / properties / token_estimate_breakdown / default
```
Removed value: -null
```
- removedOutput schema / properties / trace / default
```
Removed value: -null
```
- removedOutput schema / properties / trace / title
```
Removed value: -"Trace"
```
- removedOutput schema / properties / warnings / default
```
Removed value: -null
```
- removedOutput schema / properties / warnings / title
```
Removed value: -"Warnings"
```
- removedOutput schema / title
```
Removed value: -"FetchPaperOutput"
```
Addedv3.1.3Jul 18, 2026
Removedv3.1.3Jul 18, 2026
First observedv1.0.0Jul 11, 2026

TDQS

A4.7/5.0

Behavior5/5

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

Even though annotations indicate a non-read-only, side-effect-capable tool, the description adds substantial behavioral detail: remote service access, provider artifact writes, MCP cache sidecar, no_download suppression, save_markdown path return, artifact_mode cache retention, asset_profile ImageContent bounds, and access-control boundaries. It goes well beyond the annotations.

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?

The description is dense but every sentence adds meaningful information. It front-loads the core action and defaults, then layers side-effect semantics, cache behavior, and resource pointers. For a tool with 12 parameters and nested options, this is appropriately sized rather than bloated.

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

Completeness5/5

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

Given the tool's complexity, 0% schema coverage, and no output schema, the description covers the key aspects needed for correct invocation: required query, default modes, side-effect control, cache matching semantics, output forms including path and ImageContent, and a pointer to the provider catalog for environment-specific facts.

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

Parameters4/5

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

Schema description coverage is 0%, so the description carries the parameter-meaning burden. It explains the purpose and defaults for many parameters, including modes, include_refs, max_tokens, prefer_cache, no_download, save_markdown, artifact_mode, and asset_profile. Some parameters such as download_dir, markdown_filename, preferred_providers, and inline_image_budget are not explained, so it is not a 5.

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

Purpose5/5

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

The description opens with a specific verb and resource: 'Fetch one paper as structured article, Markdown, and/or metadata...'. It clearly identifies the core output modes and distinguishes itself from siblings like batch_fetch and get_cached by emphasizing single-paper fetch.

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?

The description gives explicit operational guidance: defaults, fallback behavior, no_download=true suppressing writes, save_markdown=true as an explicit write, artifact_mode semantics, and the warning to use prefer_cache=true only with matching request semantics. It does not explicitly name alternatives like batch_fetch, so it is not a 5.

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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