Hosted veraPDF: check a PDF against PDF/A or PDF/UA and get the full validation report.
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Check whether a PDF is accessible by PDF/UA, the ISO standard for accessible PDF. veraPDF checks the machine-checkable rules of PDF/UA: tags, structure, alt text present, fonts, metadata. Whether alt text or reading order make sense still needs a person. Input: `pdf_base64` is the PDF as base64, at most 4 MB decoded; or pass the file as a download link in `file`. `profile` is "ua1" or "ua2". Returns `compliant` (true or false), `profile_name`, `statement`, `passed_rules`, `failed_rules` and `top_failed_rules`: up to 10 failed rules with their `id` (clause and test number), `specification`, `description` and `failed_checks`. A file that is not a PDF fails with `not_a_pdf`; an unavailable veraPDF with `engine_unavailable`. For the full report, use the REST API (`POST /v1/verapdf/api/validate/ua1`). Credits: 10 per call.
The file as a download link, instead of `pdf_base64`. In ChatGPT, pass the user's uploaded file here. Other clients can set `download_url` to a public https URL.
"ua1" (the default) checks against PDF/UA-1 (ISO 14289-1), "ua2" against PDF/UA-2 (ISO 14289-2).
The PDF, base64-encoded. At most 4 MB decoded.
Pick your client. Values in capitals, like YOUR_TOKEN, are yours to fill in.
Run in a terminal
claude mcp add --transport http verapdf https://api.pagespool.com/mcp/verapdf/
Headers
X-API-Key (optional, not in the config above): Your API key; signing in with OAuth works insteadCheck whether a PDF is accessible by PDF/UA, the ISO standard for accessible PDF. veraPDF checks the machine-checkable rules of PDF/UA: tags, structure, alt text present, fonts, metadata. Whether alt text or reading order make sense still needs a person. Input: `pdf_base64` is the PDF as base64, at most 4 MB decoded; or pass the file as a download link in `file`. `profile` is "ua1" or "ua2". Returns `compliant` (true or false), `profile_name`, `statement`, `passed_rules`, `failed_rules` and `top_failed_rules`: up to 10 failed rules with their `id` (clause and test number), `specification`, `description` and `failed_checks`. A file that is not a PDF fails with `not_a_pdf`; an unavailable veraPDF with `engine_unavailable`. For the full report, use the REST API (`POST /v1/verapdf/api/validate/ua1`). Credits: 10 per call.
| Argument | Type | Description |
|---|---|---|
| file | object | The file as a download link, instead of `pdf_base64`. In ChatGPT, pass the user's uploaded file here. Other clients can set `download_url` to a public https URL. |
| profile | string | "ua1" (the default) checks against PDF/UA-1 (ISO 14289-1), "ua2" against PDF/UA-2 (ISO 14289-2). |
| pdf_base64 | any | The PDF, base64-encoded. At most 4 MB decoded. |
{
"type": "object",
"properties": {
"file": {
"type": "object",
"default": null,
"required": [
"download_url",
"file_id"
],
"properties": {
"file_id": {
"type": "string",
"description": "An identifier for the file. ChatGPT sets it; other clients may pass any label, such as the file name."
},
"file_name": {
"type": "string"
},
"mime_type": {
"type": "string"
},
"download_url": {
"type": "string",
"description": "A public https URL of the file."
}
},
"description": "The file as a download link, instead of `pdf_base64`. In ChatGPT, pass the user's uploaded file here. Other clients can set `download_url` to a public https URL."
},
"profile": {
"enum": [
"ua1",
"ua2"
],
"type": "string",
"default": "ua1",
"description": "\"ua1\" (the default) checks against PDF/UA-1 (ISO 14289-1), \"ua2\" against PDF/UA-2 (ISO 14289-2)."
},
"pdf_base64": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null,
"description": "The PDF, base64-encoded. At most 4 MB decoded."
}
},
"additionalProperties": false
}Check whether a PDF conforms to PDF/A, the ISO archiving standard, with veraPDF. Input: `pdf_base64` is the PDF as base64, at most 4 MB decoded; or pass the file as a download link in `file`. `profile` picks the PDF/A part and level. Returns `compliant` (true or false), `profile_name` (the profile veraPDF used), `statement`, `passed_rules`, `failed_rules` and `top_failed_rules`: up to 10 failed rules with their `id` (clause and test number), `specification`, `description` and `failed_checks`. A file that is not a PDF fails with `not_a_pdf`; an unavailable veraPDF with `engine_unavailable`. For the full report in JSON, XML or HTML, use the REST API (`POST /v1/verapdf/api/validate/{profile}`). Credits: 2 per call.
| Argument | Type | Description |
|---|---|---|
| file | object | The file as a download link, instead of `pdf_base64`. In ChatGPT, pass the user's uploaded file here. Other clients can set `download_url` to a public https URL. |
| profile | string | The PDF/A part and level, such as "2b" or "3a". "auto" (the default) checks against the part the file declares, and against PDF/A-1b when it declares none. |
| pdf_base64 | any | The PDF, base64-encoded. At most 4 MB decoded. |
{
"type": "object",
"properties": {
"file": {
"type": "object",
"default": null,
"required": [
"download_url",
"file_id"
],
"properties": {
"file_id": {
"type": "string",
"description": "An identifier for the file. ChatGPT sets it; other clients may pass any label, such as the file name."
},
"file_name": {
"type": "string"
},
"mime_type": {
"type": "string"
},
"download_url": {
"type": "string",
"description": "A public https URL of the file."
}
},
"description": "The file as a download link, instead of `pdf_base64`. In ChatGPT, pass the user's uploaded file here. Other clients can set `download_url` to a public https URL."
},
"profile": {
"enum": [
"auto",
"1a",
"1b",
"2a",
"2b",
"2u",
"3a",
"3b",
"3u",
"4",
"4e",
"4f"
],
"type": "string",
"default": "auto",
"description": "The PDF/A part and level, such as \"2b\" or \"3a\". \"auto\" (the default) checks against the part the file declares, and against PDF/A-1b when it declares none."
},
"pdf_base64": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null,
"description": "The PDF, base64-encoded. At most 4 MB decoded."
}
},
"additionalProperties": false
}We read every tool's name, description and inputs the way the model will, looking for instructions hidden from you. A clean result means no warning signs, not a guarantee. Scanned Nov 4, 2026.