pdfnative-mcp

Add barcode / QR code

add_barcode

Idempotent

Generate a single-page PDF containing a QR, Code128, EAN-13, DataMatrix, or PDF417 barcode from raw payload data, with optional caption, PDF/A compliance, and print settings.

Instructions

Single-page PDF with a barcode: qr (URLs, vCards, UTF-8 ≤ 4296 chars; ecLevel 'H' for print, 'M' default), code128 (ASCII SKUs), ean13 (12–13 digits, checksum auto), datamatrix (dense industrial marks), pdf417 (ID cards, boarding passes). data is the raw payload — never pre-encode. Typical: { format:'qr', data:'https://example.com', caption:'Scan me' }. PDF/A, print, metadata and creationDate options as on every document tool.

Input Schema

Name	Required	Description	Default
`data`	Yes	Raw payload to encode — do NOT URL-encode. For QR/URL pass e.g. "https://example.com" verbatim. EAN-13 must be 12 or 13 digits (13th is auto-computed). Code 128 accepts ASCII alphanumerics.
`pdfA`	No	PDF/A level: pdfa1b (simple text+images), pdfa2b/pdfa2u (richer; 2u = Unicode mapping), pdfa3b (attachments / Factur-X). Pair with embedFonts=true for a valid claim. Exclusive with encryption. See docs/guides/PDFA.md.
`pdfx`	No	PDF/X-4 print exchange (ISO 15930-7). REQUIRES outputIntent with the printer's ICC profile (device class 'prtr'; CMYK or Gray — none is bundled); needs embedFonts:true for a conformant file (PDFX_NO_FONT_ENTRIES otherwise, strict:true refuses). Combines with pdfA:'pdfa2b' \| 'pdfa2u' (dual claim) but not pdfa1b / pdfa3b; exclusive with encrypt; metadata.trapped must be 'True' or 'False'; TrimBox or ArtBox, not both. Links and form fields are reported (PDFX_ANNOTATIONS). Check with validate_pdf standard:'pdf-x-4'. See the print_ready prompt.
`debug`	No	Draw margin / block / cell guide rectangles (unmarked content — not for PDF/UA output). Geometry unchanged. Default false.
`print`	No	Print production (ISO 32000-1 §14.11): page boxes, `bleed` shorthand (TrimBox = MediaBox inset), crop/registration marks outside the TrimBox, /UserUnit for large formats (PDF 1.7; not under pdfa1b), `spotColours` ink declarations. See docs/guides/PRINT.md.
`title`	No	PDF document title (also rendered as page heading).	Barcode
`width`	No	Barcode width in PDF points.
`format`	Yes	Barcode symbology to render.
`height`	No	Barcode height in PDF points (ignored for square symbologies like QR/Data Matrix).
`strict`	No	Fail instead of producing a file the engine warns about: a PDFA_* diagnostic → PDF_A_COMPLIANCE_VIOLATION (e.g. PDFA_NO_FONT_ENTRIES without embedFonts), a PDFX_* one → PDF_X_COMPLIANCE_VIOLATION, any other (TYPOGRAPHY_FEATURE_INEFFECTIVE, TEXT_GLYPH_NOT_COVERED — a character no font covers, drawn as a box or '?') → DIAGNOSTIC_ESCALATED. Pair with embedFonts=true.
`caption`	No	Optional caption rendered above the barcode.
`ecLevel`	No	QR ONLY. Error correction level (L=7%, M=15%, Q=25%, H=30%). Ignored for code128/ean13/datamatrix/pdf417. Use H for printed media that may get smudged or partially covered (e.g. logo overlay).	M
`encrypt`	No	Encrypt at build time (AES-128 default / AES-256) and KEEP the AcroForm — unlike encrypt_pdf, which rebuilds the page tree. Exclusive with pdfA. Randomised output, never cached.
`margins`	No	Margins in points, all four required (0–200). Default 45 / 36 / 35 / 36.
`compress`	No	FlateDecode the streams (smaller file, different bytes; PDF/A unaffected, XMP stays plain). Default false.
`metadata`	No	/Info (+ XMP under PDF/A): author, subject, keywords, /Trapped.
`pageSize`	No	Portrait page preset (points): A4 595.28×841.89 (default), Letter 612×792, Legal 612×1008, A3 841.89×1190.55, Tabloid 792×1224. print.* boxes must fit it.
`direction`	No	Base text direction (UAX #9): 'auto' reads each paragraph's first strong character and right-aligns RTL ones; 'ltr' / 'rtl' force it. A paragraph's own direction overrides it. Omitted = LTR (1.7.0 bytes).
`actualText`	No	Untagged output: wrap reordered shaped runs and RTL runs in /ActualText so extract_text returns reading order. Default true; false = bare 1.7.0 glyph runs. No effect on tagged (pdfA) output.
`embedFonts`	No	Embed Noto Sans Latin instead of the viewer base-14 Helvetica. REQUIRED for a valid PDF/A or PDF/X claim (every font embedded) and for strict=true; adds ~0.3 MiB.
`outputMode`	No	'base64' (default) returns the PDF inline; 'file' writes it inside the PDFNATIVE_MCP_OUTPUT_DIR sandbox (SECURITY_VIOLATION when the sandbox is not configured).	base64
`outputPath`	No	Required when outputMode='file'. Relative path inside the sandbox; must end with .pdf (no absolute paths, no '..').
`typography`	No	Fine typography, all opt-in (omitted = unchanged bytes). kerning and fontFeatures need embedFonts:true ('fr' works on base-14 too). No hyphenation dictionary is installed: use soft hyphens (U+00AD). See the typography prompt.
`creationDate`	No	ISO-8601 instant for /CreationDate (+ XMP, the trailer /ID and the {date} placeholder), written in UTC. Pin it for byte-identical output across calls and hosts; omitted = wall clock, so every call differs.
`outputIntent`	No	Custom OutputIntent (under pdfA or pdfx): an RGB, CMYK or Gray ICC profile + condition strings, replacing the built-in sRGB intent. The profile must be a real ICC file ('acsp' signature, consistent size — PRINT_ERROR otherwise); pdfx needs device class 'prtr'. Under a CMYK / Gray intent RGB content is mapped through a calibrated default space.
`footerTemplate`	No	Running footer on every page. Replaces the default footer: footerText is then ignored and page numbers appear only via {page}/{pages}.
`headerTemplate`	No	Running header on every page (left / center / right zones); reserves 15 pt.
`includeDiagnostics`	No	Return the diagnostics raised while building (PDFA_, PDFX_, TYPOGRAPHY_*, TEXT_GLYPH_NOT_COVERED) as `diagnostics[]` (possibly empty).

Output Schema

Name	Required	Description
`url`	No	Public URL of the file (file mode, only when PDFNATIVE_MCP_OUTPUT_BASE_URL is set): base URL + sandbox-relative path, percent-encoded.
`mode`	Yes
`summary`	No	Tool-specific summary, when produced.
`filePath`	No	Sandboxed absolute path (file mode).
`sizeBytes`	Yes
`diagnostics`	No	Engine diagnostics (when includeDiagnostics=true).

Schema Changelog

Changes observed during successful MCP inspections.

Changed13 schema fields changedv1.8.0Nov 3, 2026

addedInput schema / properties / actualText

Added value: +{
+  "description": "Untagged output: wrap reordered shaped runs and RTL runs in /ActualText so extract_text returns reading order. Default true; false = bare 1.7.0 glyph runs. No effect on tagged (pdfA) output.",
+  "type": "boolean"
+}

addedInput schema / properties / direction

Added value: +{
+  "description": "Base text direction (UAX #9): 'auto' reads each paragraph's first strong character and right-aligns RTL ones; 'ltr' / 'rtl' force it. A paragraph's own direction overrides it. Omitted = LTR (1.7.0 bytes).",
+  "enum": [
+    "auto",
+    "ltr",
+    "rtl"
+  ],
+  "type": "string"
+}

changedInput schema / properties / footerTemplate / properties / color / anyOf

Previous value: -[
-  {
-    "pattern": "^#[0-9a-fA-F]{6}$",
-    "type": "string"
-  },
-  {
-    "description": "DeviceCMYK operands 'C M Y K', each 0.0–1.0.",
-    "pattern": "^(?:0(?:\\.\\d+)?|1(?:\\.0+)?)(?: (?:0(?:\\.\\d+)?|1(?:\\.0+)?)){3}$",
-    "type": "string"
-  },
-  {
-    "description": "DeviceCMYK ink percentages [c, m, y, k], each 0–100.",
-    "items": {
-      "maximum": 100,
-      "minimum": 0,
-      "type": "number"
-    },
-    "maxItems": 4,
-    "minItems": 4,
-    "type": "array"
-  }
-]New value: +[
+  {
+    "pattern": "^#[0-9a-fA-F]{6}$",
+    "type": "string"
+  },
+  {
+    "description": "DeviceCMYK operands 'C M Y K', each 0.0–1.0.",
+    "pattern": "^(?:0(?:\\.\\d+)?|1(?:\\.0+)?)(?: (?:0(?:\\.\\d+)?|1(?:\\.0+)?)){3}$",
+    "type": "string"
+  },
+  {
+    "description": "DeviceCMYK ink percentages [c, m, y, k], each 0–100.",
+    "items": {
+      "maximum": 100,
+      "minimum": 0,
+      "type": "number"
+    },
+    "maxItems": 4,
+    "minItems": 4,
+    "type": "array"
+  },
+  {
+    "additionalProperties": false,
+    "description": "Spot ink of print.spotColours, tint 0–1.",
+    "properties": {
+      "spot": {
+        "maxLength": 100,
+        "minLength": 1,
+        "type": "string"
+      },
+      "tint": {
+        "maximum": 1,
+        "minimum": 0,
+        "type": "number"
+      }
+    },
+    "required": [
+      "spot"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "description": "Mix of spot inks (name → tint).",
+    "properties": {
+      "inks": {
+        "additionalProperties": {
+          "maximum": 1,
+          "minimum": 0,
+          "type": "number"
+        },
+        "maxProperties": 8,
+        "minProperties": 1,
+        "type": "object"
+      }
+    },
+    "required": [
+      "inks"
+    ],
+    "type": "object"
+  }
+]

changedInput schema / properties / headerTemplate / properties / color / anyOf

Previous value: -[
-  {
-    "pattern": "^#[0-9a-fA-F]{6}$",
-    "type": "string"
-  },
-  {
-    "description": "DeviceCMYK operands 'C M Y K', each 0.0–1.0.",
-    "pattern": "^(?:0(?:\\.\\d+)?|1(?:\\.0+)?)(?: (?:0(?:\\.\\d+)?|1(?:\\.0+)?)){3}$",
-    "type": "string"
-  },
-  {
-    "description": "DeviceCMYK ink percentages [c, m, y, k], each 0–100.",
-    "items": {
-      "maximum": 100,
-      "minimum": 0,
-      "type": "number"
-    },
-    "maxItems": 4,
-    "minItems": 4,
-    "type": "array"
-  }
-]New value: +[
+  {
+    "pattern": "^#[0-9a-fA-F]{6}$",
+    "type": "string"
+  },
+  {
+    "description": "DeviceCMYK operands 'C M Y K', each 0.0–1.0.",
+    "pattern": "^(?:0(?:\\.\\d+)?|1(?:\\.0+)?)(?: (?:0(?:\\.\\d+)?|1(?:\\.0+)?)){3}$",
+    "type": "string"
+  },
+  {
+    "description": "DeviceCMYK ink percentages [c, m, y, k], each 0–100.",
+    "items": {
+      "maximum": 100,
+      "minimum": 0,
+      "type": "number"
+    },
+    "maxItems": 4,
+    "minItems": 4,
+    "type": "array"
+  },
+  {
+    "additionalProperties": false,
+    "description": "Spot ink of print.spotColours, tint 0–1.",
+    "properties": {
+      "spot": {
+        "maxLength": 100,
+        "minLength": 1,
+        "type": "string"
+      },
+      "tint": {
+        "maximum": 1,
+        "minimum": 0,
+        "type": "number"
+      }
+    },
+    "required": [
+      "spot"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "description": "Mix of spot inks (name → tint).",
+    "properties": {
+      "inks": {
+        "additionalProperties": {
+          "maximum": 1,
+          "minimum": 0,
+          "type": "number"
+        },
+        "maxProperties": 8,
+        "minProperties": 1,
+        "type": "object"
+      }
+    },
+    "required": [
+      "inks"
+    ],
+    "type": "object"
+  }
+]

changedInput schema / properties / includeDiagnostics / description

Previous value: -"Return the diagnostics raised while building (PDFA_*, PDFX_*, TYPOGRAPHY_*) as `diagnostics[]` (possibly empty)."New value: +"Return the diagnostics raised while building (PDFA_*, PDFX_*, TYPOGRAPHY_*, TEXT_GLYPH_NOT_COVERED) as `diagnostics[]` (possibly empty)."

changedInput schema / properties / pdfx / description

Previous value: -"PDF/X-4 print exchange (ISO 15930-7). REQUIRES outputIntent with the printer's ICC profile (device class 'prtr'; CMYK or Gray — none is bundled); needs embedFonts:true for a conformant file (PDFX_NO_FONT_ENTRIES otherwise, strict:true refuses). Exclusive with pdfA and encrypt; metadata.trapped must be 'True' or 'False'; TrimBox or ArtBox, not both. Links and form fields are reported (PDFX_ANNOTATIONS). Check with validate_pdf standard:'pdf-x-4'. See the print_ready prompt."New value: +"PDF/X-4 print exchange (ISO 15930-7). REQUIRES outputIntent with the printer's ICC profile (device class 'prtr'; CMYK or Gray — none is bundled); needs embedFonts:true for a conformant file (PDFX_NO_FONT_ENTRIES otherwise, strict:true refuses). Combines with pdfA:'pdfa2b' | 'pdfa2u' (dual claim) but not pdfa1b / pdfa3b; exclusive with encrypt; metadata.trapped must be 'True' or 'False'; TrimBox or ArtBox, not both. Links and form fields are reported (PDFX_ANNOTATIONS). Check with validate_pdf standard:'pdf-x-4'. See the print_ready prompt."

changedInput schema / properties / print / description

Previous value: -"Print production (ISO 32000-1 §14.11): page boxes, `bleed` shorthand (TrimBox = MediaBox inset), crop/registration marks outside the TrimBox, /UserUnit for large formats (PDF 1.7; not under pdfa1b). See docs/guides/PRINT.md."New value: +"Print production (ISO 32000-1 §14.11): page boxes, `bleed` shorthand (TrimBox = MediaBox inset), crop/registration marks outside the TrimBox, /UserUnit for large formats (PDF 1.7; not under pdfa1b), `spotColours` ink declarations. See docs/guides/PRINT.md."

addedInput schema / properties / print / properties / spotColours

Added value: +{
+  "description": "Spot inks (/Separation plates) the document may paint with { spot:'name', tint } or { inks:{ name: tint } } anywhere a colour is accepted. Undeclared ink → VALIDATION_ERROR; blank or duplicate name → PRINT_ERROR (an empty string is VALIDATION_ERROR).",
+  "items": {
+    "additionalProperties": false,
+    "properties": {
+      "alternate": {
+        "anyOf": [
+          {
+            "items": {
+              "maximum": 100,
+              "minimum": 0,
+              "type": "number"
+            },
+            "maxItems": 4,
+            "minItems": 4,
+            "type": "array"
+          },
+          {
+            "items": {
+              "maximum": 255,
+              "minimum": 0,
+              "type": "number"
+            },
+            "maxItems": 3,
+            "minItems": 3,
+            "type": "array"
+          }
+        ],
+        "description": "Process alternate for proofing: [c, m, y, k] 0–100 or [r, g, b] 0–255."
+      },
+      "name": {
+        "description": "'PANTONE 300 C', 'Varnish', …",
+        "maxLength": 100,
+        "minLength": 1,
+        "type": "string"
+      }
+    },
+    "required": [
+      "name",
+      "alternate"
+    ],
+    "type": "object"
+  },
+  "maxItems": 32,
+  "minItems": 1,
+  "type": "array"
+}

changedInput schema / properties / strict / description

Previous value: -"Fail instead of producing a file the engine warns about: a PDFA_* diagnostic → PDF_A_COMPLIANCE_VIOLATION (e.g. PDFA_NO_FONT_ENTRIES without embedFonts), a PDFX_* one → PDF_X_COMPLIANCE_VIOLATION, any other → DIAGNOSTIC_ESCALATED. Pair with embedFonts=true."New value: +"Fail instead of producing a file the engine warns about: a PDFA_* diagnostic → PDF_A_COMPLIANCE_VIOLATION (e.g. PDFA_NO_FONT_ENTRIES without embedFonts), a PDFX_* one → PDF_X_COMPLIANCE_VIOLATION, any other (TYPOGRAPHY_FEATURE_INEFFECTIVE, TEXT_GLYPH_NOT_COVERED — a character no font covers, drawn as a box or '?') → DIAGNOSTIC_ESCALATED. Pair with embedFonts=true."

changedInput schema / properties / typography / description

Previous value: -"Fine typography, all opt-in (omitted = unchanged bytes). kerning, fontFeatures and the 'fr' narrow space need embedFonts:true. No hyphenation dictionary is installed: use soft hyphens (U+00AD). See the typography prompt."New value: +"Fine typography, all opt-in (omitted = unchanged bytes). kerning and fontFeatures need embedFonts:true ('fr' works on base-14 too). No hyphenation dictionary is installed: use soft hyphens (U+00AD). See the typography prompt."

changedInput schema / properties / typography / properties / punctuationSpacing / anyOf

Previous value: -[
-  {
-    "enum": [
-      "fr",
-      "fr-CA"
-    ],
-    "type": "string"
-  },
-  {
-    "items": {
-      "additionalProperties": false,
-      "properties": {
-        "char": {
-          "maxLength": 2,
-          "minLength": 1,
-          "type": "string"
-        },
-        "side": {
-          "enum": [
-            "before",
-            "after"
-          ],
-          "type": "string"
-        },
-        "space": {
-          "description": "U+00A0 / U+202F (narrow needs embedFonts).",
-          "enum": [
-            "nbsp",
-            "narrow"
-          ],
-          "type": "string"
-        }
-      },
-      "required": [
-        "char",
-        "side",
-        "space"
-      ],
-      "type": "object"
-    },
-    "maxItems": 32,
-    "type": "array"
-  }
-]New value: +[
+  {
+    "enum": [
+      "fr",
+      "fr-CA"
+    ],
+    "type": "string"
+  },
+  {
+    "items": {
+      "additionalProperties": false,
+      "properties": {
+        "char": {
+          "maxLength": 2,
+          "minLength": 1,
+          "type": "string"
+        },
+        "side": {
+          "enum": [
+            "before",
+            "after"
+          ],
+          "type": "string"
+        },
+        "space": {
+          "description": "U+00A0 / U+202F (narrow: a TJ adjustment on base-14, the glyph on an embedded font).",
+          "enum": [
+            "nbsp",
+            "narrow"
+          ],
+          "type": "string"
+        }
+      },
+      "required": [
+        "char",
+        "side",
+        "space"
+      ],
+      "type": "object"
+    },
+    "maxItems": 32,
+    "type": "array"
+  }
+]

changedOutput schema / description

Previous value: -"Result of a PDF-producing tool. base64 mode: the PDF arrives as an embedded `resource` content block (not duplicated here); file mode: `filePath`."New value: +"Result of a PDF-producing tool. base64 mode: the PDF arrives as an embedded `resource` content block (not duplicated here); file mode: `filePath` (and `url` when the operator maps the sandbox to a public base URL)."

addedOutput schema / properties / url

Added value: +{
+  "description": "Public URL of the file (file mode, only when PDFNATIVE_MCP_OUTPUT_BASE_URL is set): base URL + sandbox-relative path, percent-encoded.",
+  "type": "string"
+}

Changed24 schema fields changedv1.6.2Sep 27, 2026

changedInput schema / properties / creationDate / description

Previous value: -"ISO-8601 instant for /CreationDate (+ XMP). Pin it for byte-identical output across calls (same host TZ); omitted = wall clock, so every call differs."New value: +"ISO-8601 instant for /CreationDate (+ XMP, the trailer /ID and the {date} placeholder), written in UTC. Pin it for byte-identical output across calls and hosts; omitted = wall clock, so every call differs."

changedInput schema / properties / embedFonts / description

Previous value: -"Embed Noto Sans Latin instead of the viewer base-14 Helvetica. REQUIRED for a valid PDF/A claim (ISO 19005 §6.2.11.4.1) and for strict=true; adds ~0.3 MiB."New value: +"Embed Noto Sans Latin instead of the viewer base-14 Helvetica. REQUIRED for a valid PDF/A or PDF/X claim (every font embedded) and for strict=true; adds ~0.3 MiB."

changedInput schema / properties / footerTemplate / properties / center / description

Previous value: -"Placeholders: {page} {pages} {title} {date} (build-day wall clock, not creationDate)."New value: +"Placeholders: {page} {pages} {title} {date} (UTC date of creationDate when pinned, else of the build)."

addedInput schema / properties / footerTemplate / properties / color / anyOf

Added value: +[
+  {
+    "pattern": "^#[0-9a-fA-F]{6}$",
+    "type": "string"
+  },
+  {
+    "description": "DeviceCMYK operands 'C M Y K', each 0.0–1.0.",
+    "pattern": "^(?:0(?:\\.\\d+)?|1(?:\\.0+)?)(?: (?:0(?:\\.\\d+)?|1(?:\\.0+)?)){3}$",
+    "type": "string"
+  },
+  {
+    "description": "DeviceCMYK ink percentages [c, m, y, k], each 0–100.",
+    "items": {
+      "maximum": 100,
+      "minimum": 0,
+      "type": "number"
+    },
+    "maxItems": 4,
+    "minItems": 4,
+    "type": "array"
+  }
+]

changedInput schema / properties / footerTemplate / properties / color / description
```
Previous value: -"Hex colour."New value: +"Hex colour (#RRGGBB)."
```
removedInput schema / properties / footerTemplate / properties / color / pattern
```
Removed value: -"^#[0-9a-fA-F]{6}$"
```
removedInput schema / properties / footerTemplate / properties / color / type
```
Removed value: -"string"
```

changedInput schema / properties / footerTemplate / properties / left / description

Previous value: -"Placeholders: {page} {pages} {title} {date} (build-day wall clock, not creationDate)."New value: +"Placeholders: {page} {pages} {title} {date} (UTC date of creationDate when pinned, else of the build)."

changedInput schema / properties / footerTemplate / properties / right / description

Previous value: -"Placeholders: {page} {pages} {title} {date} (build-day wall clock, not creationDate)."New value: +"Placeholders: {page} {pages} {title} {date} (UTC date of creationDate when pinned, else of the build)."

changedInput schema / properties / headerTemplate / properties / center / description

Previous value: -"Placeholders: {page} {pages} {title} {date} (build-day wall clock, not creationDate)."New value: +"Placeholders: {page} {pages} {title} {date} (UTC date of creationDate when pinned, else of the build)."

addedInput schema / properties / headerTemplate / properties / color / anyOf

Added value: +[
+  {
+    "pattern": "^#[0-9a-fA-F]{6}$",
+    "type": "string"
+  },
+  {
+    "description": "DeviceCMYK operands 'C M Y K', each 0.0–1.0.",
+    "pattern": "^(?:0(?:\\.\\d+)?|1(?:\\.0+)?)(?: (?:0(?:\\.\\d+)?|1(?:\\.0+)?)){3}$",
+    "type": "string"
+  },
+  {
+    "description": "DeviceCMYK ink percentages [c, m, y, k], each 0–100.",
+    "items": {
+      "maximum": 100,
+      "minimum": 0,
+      "type": "number"
+    },
+    "maxItems": 4,
+    "minItems": 4,
+    "type": "array"
+  }
+]

changedInput schema / properties / headerTemplate / properties / color / description
```
Previous value: -"Hex colour."New value: +"Hex colour (#RRGGBB)."
```
removedInput schema / properties / headerTemplate / properties / color / pattern
```
Removed value: -"^#[0-9a-fA-F]{6}$"
```
removedInput schema / properties / headerTemplate / properties / color / type
```
Removed value: -"string"
```

changedInput schema / properties / headerTemplate / properties / left / description

Previous value: -"Placeholders: {page} {pages} {title} {date} (build-day wall clock, not creationDate)."New value: +"Placeholders: {page} {pages} {title} {date} (UTC date of creationDate when pinned, else of the build)."

changedInput schema / properties / headerTemplate / properties / right / description

Previous value: -"Placeholders: {page} {pages} {title} {date} (build-day wall clock, not creationDate)."New value: +"Placeholders: {page} {pages} {title} {date} (UTC date of creationDate when pinned, else of the build)."

changedInput schema / properties / includeDiagnostics / description

Previous value: -"Return the PDF/A diagnostics raised while building as `diagnostics[]` (possibly empty)."New value: +"Return the diagnostics raised while building (PDFA_*, PDFX_*, TYPOGRAPHY_*) as `diagnostics[]` (possibly empty)."

changedInput schema / properties / outputIntent / description

Previous value: -"Custom PDF/A OutputIntent: an RGB ICC profile + condition strings replacing the built-in sRGB intent (CMYK rejected)."New value: +"Custom OutputIntent (under pdfA or pdfx): an RGB, CMYK or Gray ICC profile + condition strings, replacing the built-in sRGB intent. The profile must be a real ICC file ('acsp' signature, consistent size — PRINT_ERROR otherwise); pdfx needs device class 'prtr'. Under a CMYK / Gray intent RGB content is mapped through a calibrated default space."

changedInput schema / properties / outputIntent / properties / iccProfileBase64 / description

Previous value: -"ICC profile bytes, base64 (RGB, ≤ 8 MiB)."New value: +"ICC profile bytes, base64 (RGB, CMYK or Gray; ≤ 8 MiB)."

addedInput schema / properties / pdfx

Added value: +{
+  "description": "PDF/X-4 print exchange (ISO 15930-7). REQUIRES outputIntent with the printer's ICC profile (device class 'prtr'; CMYK or Gray — none is bundled); needs embedFonts:true for a conformant file (PDFX_NO_FONT_ENTRIES otherwise, strict:true refuses). Exclusive with pdfA and encrypt; metadata.trapped must be 'True' or 'False'; TrimBox or ArtBox, not both. Links and form fields are reported (PDFX_ANNOTATIONS). Check with validate_pdf standard:'pdf-x-4'. See the print_ready prompt.",
+  "enum": [
+    "pdfx4"
+  ],
+  "type": "string"
+}

changedInput schema / properties / print / properties / marks / oneOf

Previous value: -[
-  {
-    "type": "boolean"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "crop": {
-        "description": "Corner crop (trim) marks. Default true.",
-        "type": "boolean"
-      },
-      "length": {
-        "description": "Mark length in points. Default 14.",
-        "maximum": 100,
-        "minimum": 1,
-        "type": "number"
-      },
-      "offset": {
-        "description": "Gap between TrimBox and marks in points. Default 5.",
-        "maximum": 100,
-        "minimum": 0,
-        "type": "number"
-      },
-      "registration": {
-        "description": "Edge-midpoint registration targets. Default true.",
-        "type": "boolean"
-      },
-      "weight": {
-        "description": "Stroke width in points. Default 0.25.",
-        "maximum": 5,
-        "minimum": 0.05,
-        "type": "number"
-      }
-    },
-    "type": "object"
-  }
-]New value: +[
+  {
+    "type": "boolean"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "colourBars": {
+        "anyOf": [
+          {
+            "type": "boolean"
+          },
+          {
+            "additionalProperties": false,
+            "properties": {
+              "size": {
+                "description": "Patch size in points. Default 12.",
+                "maximum": 72,
+                "minimum": 4,
+                "type": "number"
+              },
+              "tints": {
+                "description": "Add the four 50 % tint patches. Default true.",
+                "type": "boolean"
+              }
+            },
+            "type": "object"
+          }
+        ],
+        "description": "Colour control strip in the bleed (C M Y K solids + their 50 % tints): true for defaults. Off by default; needs a bleed of about 5 mm (14.17 pt) and is skipped when the strip would not fit."
+      },
+      "crop": {
+        "description": "Corner crop (trim) marks. Default true.",
+        "type": "boolean"
+      },
+      "length": {
+        "description": "Mark length in points. Default 14.",
+        "maximum": 100,
+        "minimum": 1,
+        "type": "number"
+      },
+      "offset": {
+        "description": "Gap between TrimBox and marks in points. Default 5.",
+        "maximum": 100,
+        "minimum": 0,
+        "type": "number"
+      },
+      "registration": {
+        "description": "Edge-midpoint registration targets. Default true.",
+        "type": "boolean"
+      },
+      "weight": {
+        "description": "Stroke width in points. Default 0.25.",
+        "maximum": 5,
+        "minimum": 0.05,
+        "type": "number"
+      }
+    },
+    "type": "object"
+  }
+]

changedInput schema / properties / strict / description

Previous value: -"Fail with PDF_A_COMPLIANCE_VIOLATION instead of producing a non-conformant PDF/A file (e.g. PDFA_NO_FONT_ENTRIES without embedFonts). Pair with embedFonts=true."New value: +"Fail instead of producing a file the engine warns about: a PDFA_* diagnostic → PDF_A_COMPLIANCE_VIOLATION (e.g. PDFA_NO_FONT_ENTRIES without embedFonts), a PDFX_* one → PDF_X_COMPLIANCE_VIOLATION, any other → DIAGNOSTIC_ESCALATED. Pair with embedFonts=true."

addedInput schema / properties / typography

Added value: +{
+  "additionalProperties": false,
+  "description": "Fine typography, all opt-in (omitted = unchanged bytes). kerning, fontFeatures and the 'fr' narrow space need embedFonts:true. No hyphenation dictionary is installed: use soft hyphens (U+00AD). See the typography prompt.",
+  "properties": {
+    "bindShortWords": {
+      "anyOf": [
+        {
+          "type": "boolean"
+        },
+        {
+          "additionalProperties": false,
+          "properties": {
+            "maxLength": {
+              "maximum": 3,
+              "minimum": 1,
+              "type": "integer"
+            },
+            "words": {
+              "items": {
+                "maxLength": 16,
+                "minLength": 1,
+                "type": "string"
+              },
+              "maxItems": 100,
+              "type": "array"
+            }
+          },
+          "type": "object"
+        }
+      ],
+      "description": "Never end a line on a short word: up to maxLength letters (default 1), or exactly the listed words."
+    },
+    "fontFeatures": {
+      "description": "OpenType features, later wins. tnum / lnum are no-ops on Noto Sans (TYPOGRAPHY_FEATURE_INEFFECTIVE).",
+      "items": {
+        "enum": [
+          "tnum",
+          "pnum",
+          "lnum",
+          "onum",
+          "zero",
+          "ordn",
+          "sups",
+          "subs",
+          "smcp",
+          "c2sc",
+          "case"
+        ],
+        "type": "string"
+      },
+      "maxItems": 11,
+      "type": "array",
+      "uniqueItems": true
+    },
+    "hyphenationLanguage": {
+      "description": "BCP 47 tag; no effect here (no hyphenation provider installed).",
+      "maxLength": 35,
+      "pattern": "^[A-Za-z]{2,3}(?:-[A-Za-z0-9]{2,8})*$",
+      "type": "string"
+    },
+    "keepHeadingsWithNext": {
+      "anyOf": [
+        {
+          "type": "boolean"
+        },
+        {
+          "additionalProperties": false,
+          "properties": {
+            "minLines": {
+              "maximum": 10,
+              "minimum": 1,
+              "type": "integer"
+            }
+          },
+          "type": "object"
+        }
+      ],
+      "description": "Never strand a heading at a page foot. true = { minLines: 2 }."
+    },
+    "kerning": {
+      "description": "Pair kerning (GPOS).",
+      "type": "boolean"
+    },
+    "metrics": {
+      "description": "Base-14 text: 'exact' uses the AFM widths (different wraps). Default 'approximate'.",
+      "enum": [
+        "approximate",
+        "exact"
+      ],
+      "type": "string"
+    },
+    "opticalMargins": {
+      "description": "Hang punctuation into the margin of align:'justify' text.",
+      "type": "boolean"
+    },
+    "orphans": {
+      "description": "Min lines left at a page foot (default 2; needs splitParagraphs).",
+      "maximum": 10,
+      "minimum": 1,
+      "type": "integer"
+    },
+    "punctuationSpacing": {
+      "anyOf": [
+        {
+          "enum": [
+            "fr",
+            "fr-CA"
+          ],
+          "type": "string"
+        },
+        {
+          "items": {
+            "additionalProperties": false,
+            "properties": {
+              "char": {
+                "maxLength": 2,
+                "minLength": 1,
+                "type": "string"
+              },
+              "side": {
+                "enum": [
+                  "before",
+                  "after"
+                ],
+                "type": "string"
+              },
+              "space": {
+                "description": "U+00A0 / U+202F (narrow needs embedFonts).",
+                "enum": [
+                  "nbsp",
+                  "narrow"
+                ],
+                "type": "string"
+              }
+            },
+            "required": [
+              "char",
+              "side",
+              "space"
+            ],
+            "type": "object"
+          },
+          "maxItems": 32,
+          "type": "array"
+        }
+      ],
+      "description": "No-break spaces next to punctuation (existing spaces only). 'fr': narrow before ; ! ?, no-break before ':' and inside « ». 'fr-CA': ':' and « » only. Or explicit rules."
+    },
+    "splitParagraphs": {
+      "description": "Paragraphs may break across pages at a line boundary (default: atomic).",
+      "type": "boolean"
+    },
+    "unitBinding": {
+      "anyOf": [
+        {
+          "type": "boolean"
+        },
+        {
+          "additionalProperties": false,
+          "properties": {
+            "units": {
+              "items": {
+                "maxLength": 16,
+                "minLength": 1,
+                "type": "string"
+              },
+              "maxItems": 100,
+              "type": "array"
+            }
+          },
+          "type": "object"
+        }
+      ],
+      "description": "No-break space between a number and its unit ('150 €', '12 kg'); units replaces the built-in list."
+    },
+    "widows": {
+      "description": "Min lines carried over (default 2; needs splitParagraphs).",
+      "maximum": 10,
+      "minimum": 1,
+      "type": "integer"
+    }
+  },
+  "type": "object"
+}

changedOutput schema / properties / diagnostics / description

Previous value: -"PDF/A diagnostics (when includeDiagnostics=true)."New value: +"Engine diagnostics (when includeDiagnostics=true)."

Changed21 schema fields changedAug 24, 2026

addedInput schema / properties / compress

Added value: +{
+  "description": "FlateDecode the streams (smaller file, different bytes; PDF/A unaffected, XMP stays plain). Default false.",
+  "type": "boolean"
+}

addedInput schema / properties / creationDate

Added value: +{
+  "description": "ISO-8601 instant for /CreationDate (+ XMP). Pin it for byte-identical output across calls (same host TZ); omitted = wall clock, so every call differs.",
+  "format": "date-time",
+  "type": "string"
+}

addedInput schema / properties / debug

Added value: +{
+  "description": "Draw margin / block / cell guide rectangles (unmarked content — not for PDF/UA output). Geometry unchanged. Default false.",
+  "type": "boolean"
+}

addedInput schema / properties / embedFonts

Added value: +{
+  "default": false,
+  "description": "Embed Noto Sans Latin instead of the viewer base-14 Helvetica. REQUIRED for a valid PDF/A claim (ISO 19005 §6.2.11.4.1) and for strict=true; adds ~0.3 MiB.",
+  "type": "boolean"
+}

addedInput schema / properties / encrypt

Added value: +{
+  "additionalProperties": false,
+  "description": "Encrypt at build time (AES-128 default / AES-256) and KEEP the AcroForm — unlike encrypt_pdf, which rebuilds the page tree. Exclusive with pdfA. Randomised output, never cached.",
+  "properties": {
+    "algorithm": {
+      "default": "aes128",
+      "description": "aes128 (V4/R4, widest compatibility) or aes256 (V5/R6).",
+      "enum": [
+        "aes128",
+        "aes256"
+      ],
+      "type": "string"
+    },
+    "ownerPassword": {
+      "description": "Owner password (full access).",
+      "maxLength": 4096,
+      "minLength": 1,
+      "type": "string"
+    },
+    "permissions": {
+      "additionalProperties": false,
+      "description": "Permission flags; each defaults to allowed.",
+      "properties": {
+        "copy": {
+          "type": "boolean"
+        },
+        "extractText": {
+          "type": "boolean"
+        },
+        "modify": {
+          "type": "boolean"
+        },
+        "print": {
+          "type": "boolean"
+        }
+      },
+      "type": "object"
+    },
+    "userPassword": {
+      "description": "Open password; omitted/empty = opens without a prompt.",
+      "maxLength": 4096,
+      "type": "string"
+    }
+  },
+  "required": [
+    "ownerPassword"
+  ],
+  "type": "object"
+}

addedInput schema / properties / footerTemplate

Added value: +{
+  "additionalProperties": false,
+  "description": "Running footer on every page. Replaces the default footer: footerText is then ignored and page numbers appear only via {page}/{pages}.",
+  "properties": {
+    "center": {
+      "description": "Placeholders: {page} {pages} {title} {date} (build-day wall clock, not creationDate).",
+      "maxLength": 200,
+      "type": "string"
+    },
+    "color": {
+      "description": "Hex colour.",
+      "pattern": "^#[0-9a-fA-F]{6}$",
+      "type": "string"
+    },
+    "fontSize": {
+      "description": "Default 7.",
+      "maximum": 14,
+      "minimum": 6,
+      "type": "number"
+    },
+    "left": {
+      "description": "Placeholders: {page} {pages} {title} {date} (build-day wall clock, not creationDate).",
+      "maxLength": 200,
+      "type": "string"
+    },
+    "right": {
+      "description": "Placeholders: {page} {pages} {title} {date} (build-day wall clock, not creationDate).",
+      "maxLength": 200,
+      "type": "string"
+    }
+  },
+  "type": "object"
+}

addedInput schema / properties / headerTemplate

Added value: +{
+  "additionalProperties": false,
+  "description": "Running header on every page (left / center / right zones); reserves 15 pt.",
+  "properties": {
+    "center": {
+      "description": "Placeholders: {page} {pages} {title} {date} (build-day wall clock, not creationDate).",
+      "maxLength": 200,
+      "type": "string"
+    },
+    "color": {
+      "description": "Hex colour.",
+      "pattern": "^#[0-9a-fA-F]{6}$",
+      "type": "string"
+    },
+    "fontSize": {
+      "description": "Default 7.",
+      "maximum": 14,
+      "minimum": 6,
+      "type": "number"
+    },
+    "left": {
+      "description": "Placeholders: {page} {pages} {title} {date} (build-day wall clock, not creationDate).",
+      "maxLength": 200,
+      "type": "string"
+    },
+    "right": {
+      "description": "Placeholders: {page} {pages} {title} {date} (build-day wall clock, not creationDate).",
+      "maxLength": 200,
+      "type": "string"
+    }
+  },
+  "type": "object"
+}

addedInput schema / properties / includeDiagnostics

Added value: +{
+  "default": false,
+  "description": "Return the PDF/A diagnostics raised while building as `diagnostics[]` (possibly empty).",
+  "type": "boolean"
+}

addedInput schema / properties / margins

Added value: +{
+  "additionalProperties": false,
+  "description": "Margins in points, all four required (0–200). Default 45 / 36 / 35 / 36.",
+  "properties": {
+    "bottom": {
+      "maximum": 200,
+      "minimum": 0,
+      "type": "number"
+    },
+    "left": {
+      "maximum": 200,
+      "minimum": 0,
+      "type": "number"
+    },
+    "right": {
+      "maximum": 200,
+      "minimum": 0,
+      "type": "number"
+    },
+    "top": {
+      "maximum": 200,
+      "minimum": 0,
+      "type": "number"
+    }
+  },
+  "required": [
+    "top",
+    "right",
+    "bottom",
+    "left"
+  ],
+  "type": "object"
+}

addedInput schema / properties / metadata

Added value: +{
+  "additionalProperties": false,
+  "description": "/Info (+ XMP under PDF/A): author, subject, keywords, /Trapped.",
+  "properties": {
+    "author": {
+      "maxLength": 500,
+      "type": "string"
+    },
+    "keywords": {
+      "maxLength": 1000,
+      "type": "string"
+    },
+    "subject": {
+      "maxLength": 1000,
+      "type": "string"
+    },
+    "trapped": {
+      "description": "/Trapped print flag.",
+      "enum": [
+        "True",
+        "False",
+        "Unknown"
+      ],
+      "type": "string"
+    }
+  },
+  "type": "object"
+}

addedInput schema / properties / outputIntent

Added value: +{
+  "additionalProperties": false,
+  "description": "Custom PDF/A OutputIntent: an RGB ICC profile + condition strings replacing the built-in sRGB intent (CMYK rejected).",
+  "properties": {
+    "iccProfileBase64": {
+      "description": "ICC profile bytes, base64 (RGB, ≤ 8 MiB).",
+      "maxLength": 11000000,
+      "minLength": 1,
+      "type": "string"
+    },
+    "info": {
+      "maxLength": 500,
+      "type": "string"
+    },
+    "outputCondition": {
+      "maxLength": 200,
+      "type": "string"
+    },
+    "outputConditionIdentifier": {
+      "description": "e.g. \"sRGB IEC61966-2.1\".",
+      "maxLength": 200,
+      "minLength": 1,
+      "type": "string"
+    },
+    "registryName": {
+      "description": "Default \"http://www.color.org\".",
+      "maxLength": 200,
+      "type": "string"
+    }
+  },
+  "required": [
+    "iccProfileBase64",
+    "outputConditionIdentifier"
+  ],
+  "type": "object"
+}

addedInput schema / properties / outputMode / description

Added value: +"'base64' (default) returns the PDF inline; 'file' writes it inside the PDFNATIVE_MCP_OUTPUT_DIR sandbox (SECURITY_VIOLATION when the sandbox is not configured)."

addedInput schema / properties / outputPath / description

Added value: +"Required when outputMode='file'. Relative path inside the sandbox; must end with .pdf (no absolute paths, no '..')."

addedInput schema / properties / pageSize

Added value: +{
+  "description": "Portrait page preset (points): A4 595.28×841.89 (default), Letter 612×792, Legal 612×1008, A3 841.89×1190.55, Tabloid 792×1224. print.* boxes must fit it.",
+  "enum": [
+    "A4",
+    "Letter",
+    "Legal",
+    "A3",
+    "Tabloid"
+  ],
+  "type": "string"
+}

changedInput schema / properties / pdfA / description

Previous value: -"Optional PDF/A conformance level (powered by pdfnative v1.2). Use 'pdfa1b' for archival of simple text+images, 'pdfa2b'/'pdfa2u' for richer content (2u guarantees Unicode mapping), 'pdfa3b' when embedding source attachments (Factur-X / ZUGFeRD). Mutually exclusive with PDF encryption. See docs/guides/PDFA.md."New value: +"PDF/A level: pdfa1b (simple text+images), pdfa2b/pdfa2u (richer; 2u = Unicode mapping), pdfa3b (attachments / Factur-X). Pair with embedFonts=true for a valid claim. Exclusive with encryption. See docs/guides/PDFA.md."

addedInput schema / properties / print

Added value: +{
+  "additionalProperties": false,
+  "description": "Print production (ISO 32000-1 §14.11): page boxes, `bleed` shorthand (TrimBox = MediaBox inset), crop/registration marks outside the TrimBox, /UserUnit for large formats (PDF 1.7; not under pdfa1b). See docs/guides/PRINT.md.",
+  "properties": {
+    "artBox": {
+      "description": "[x0, y0, x1, y1] in points, origin bottom-left, inside the MediaBox.",
+      "items": {
+        "type": "number"
+      },
+      "maxItems": 4,
+      "minItems": 4,
+      "type": "array"
+    },
+    "bleed": {
+      "description": "Bleed in points (8.5 = 3 mm); sets TrimBox = MediaBox inset. Exclusive with trimBox.",
+      "exclusiveMinimum": 0,
+      "maximum": 200,
+      "type": "number"
+    },
+    "bleedBox": {
+      "description": "[x0, y0, x1, y1] in points, origin bottom-left, inside the MediaBox.",
+      "items": {
+        "type": "number"
+      },
+      "maxItems": 4,
+      "minItems": 4,
+      "type": "array"
+    },
+    "cropBox": {
+      "description": "[x0, y0, x1, y1] in points, origin bottom-left, inside the MediaBox.",
+      "items": {
+        "type": "number"
+      },
+      "maxItems": 4,
+      "minItems": 4,
+      "type": "array"
+    },
+    "marks": {
+      "description": "Printer's marks (needs bleed or trimBox): true for defaults, or an object.",
+      "oneOf": [
+        {
+          "type": "boolean"
+        },
+        {
+          "additionalProperties": false,
+          "properties": {
+            "crop": {
+              "description": "Corner crop (trim) marks. Default true.",
+              "type": "boolean"
+            },
+            "length": {
+              "description": "Mark length in points. Default 14.",
+              "maximum": 100,
+              "minimum": 1,
+              "type": "number"
+            },
+            "offset": {
+              "description": "Gap between TrimBox and marks in points. Default 5.",
+              "maximum": 100,
+              "minimum": 0,
+              "type": "number"
+            },
+            "registration": {
+              "description": "Edge-midpoint registration targets. Default true.",
+              "type": "boolean"
+            },
+            "weight": {
+              "description": "Stroke width in points. Default 0.25.",
+              "maximum": 5,
+              "minimum": 0.05,
+              "type": "number"
+            }
+          },
+          "type": "object"
+        }
+      ]
+    },
+    "trimBox": {
+      "description": "[x0, y0, x1, y1] in points, origin bottom-left, inside the MediaBox.",
+      "items": {
+        "type": "number"
+      },
+      "maxItems": 4,
+      "minItems": 4,
+      "type": "array"
+    },
+    "userUnit": {
+      "description": "/UserUnit (multiples of 1/72 in) for pages over 14400 pt. Rejected under pdfa1b.",
+      "maximum": 75000,
+      "minimum": 1,
+      "type": "number"
+    }
+  },
+  "type": "object"
+}

addedInput schema / properties / strict

Added value: +{
+  "default": false,
+  "description": "Fail with PDF_A_COMPLIANCE_VIOLATION instead of producing a non-conformant PDF/A file (e.g. PDFA_NO_FONT_ENTRIES without embedFonts). Pair with embedFonts=true.",
+  "type": "boolean"
+}

changedOutput schema / description

Previous value: -"Structured result of a PDF-producing tool. In base64 mode the PDF bytes are delivered out-of-band as an embedded `resource` content block (data: URI), NOT duplicated here, to keep responses token-frugal. In file mode `filePath` is the sandboxed absolute path."New value: +"Result of a PDF-producing tool. base64 mode: the PDF arrives as an embedded `resource` content block (not duplicated here); file mode: `filePath`."

addedOutput schema / properties / diagnostics

Added value: +{
+  "description": "PDF/A diagnostics (when includeDiagnostics=true).",
+  "items": {
+    "additionalProperties": false,
+    "properties": {
+      "code": {
+        "type": "string"
+      },
+      "message": {
+        "type": "string"
+      },
+      "severity": {
+        "enum": [
+          "warning"
+        ],
+        "type": "string"
+      }
+    },
+    "required": [
+      "code",
+      "message",
+      "severity"
+    ],
+    "type": "object"
+  },
+  "type": "array"
+}

changedOutput schema / properties / filePath / description

Previous value: -"Absolute sandboxed file path (when mode='file')."New value: +"Sandboxed absolute path (file mode)."

addedOutput schema / properties / summary

Added value: +{
+  "additionalProperties": true,
+  "description": "Tool-specific summary, when produced.",
+  "type": "object"
+}

Changed2 schema fields changedv1.2.0Jun 24, 2026

addedOutput schema / description

Added value: +"Structured result of a PDF-producing tool. In base64 mode the PDF bytes are delivered out-of-band as an embedded `resource` content block (data: URI), NOT duplicated here, to keep responses token-frugal. In file mode `filePath` is the sandboxed absolute path."

removedOutput schema / properties / base64

Removed value: -{
-  "description": "Base64-encoded PDF bytes (when mode='base64').",
-  "type": "string"
-}

First observedv1.1.0Jun 20, 2026

TDQS

A3.8/5.0

Behavior4/5

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

Annotations already declare the safety profile (readOnly=false, destructive=false, idempotent=true), so the description does not need to repeat it. The description adds meaningful behavior: it produces a single-page PDF, can return base64 or write into the sandbox, makes encrypt exclusive with PDF/A, and notes that omitting creationDate yields different bytes each call. It does not cover auth or rate limits, but those are unlikely to matter here.

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

Conciseness4/5

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

The description is a single front-loaded paragraph that moves from purpose to format details to a typical call, with no wasted sentences. The final cross-reference to PDF/A, print, metadata and creationDate options is compact and useful, though slightly vague compared with the rest.

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

Completeness4/5

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

Given a 28-parameter schema with full description coverage, an output schema, and annotations covering safety, the description is complete enough for an agent to invoke the tool correctly for its main purpose. It does not elaborate on every standard document option, but the schema already documents those thoroughly.

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 coverage is 100%, so the baseline is 3. The description goes beyond the schema by explaining which formats suit which payloads and by reiterating that data must be raw and never pre-encoded, with a concrete example. It does not explain the many secondary print/typography parameters, but the schema handles those in detail.

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 opens with a concrete resource ('Single-page PDF with a barcode') and enumerates the supported symbologies, so an agent can immediately tell what the tool produces. It does not explicitly distinguish itself from siblings like generate_basic_pdf or add_chart, which keeps it short of a 5.

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

Usage Guidelines3/5

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

It gives useful format-selection guidance (qr for URLs/vCards, code128 for ASCII SKUs, ean13 for 12–13 digits, etc.) and a typical invocation example. However, it never states when to choose this tool over alternatives such as add_chart or generate_basic_pdf, nor when not to use it, so the routing guidance is only implied.

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