arXiv Paper by ID (arXiv API)

arxivapi/get-paper

Returns the metadata of one arXiv e-print by its arXiv id (for example 0704.0001, 2104.00272v2 or hep-th/9901001): title, abstract, authors, categories, submission and update dates, DOI and journal reference where given, and links to the abstract page and PDF. Without a version suffix the latest version is returned. An unknown id returns an empty entry list. Metadata only (CC0), served by Eden Engine; not an official arXiv product.

activeper callv1

Price

$0.0026 per call

You pay the price shown. If a call turns out to cost more than its quote, you pay the actual price, capped at twice the quote. No monthly minimum. Top-ups start at $0.50.

Data source

arXiv

Descriptive metadata from arXiv (arxiv.org, operated by Cornell University), released under CC0 1.0. Courtesy credit: Thank you to arXiv for use of its open access interoperability. E-print full text and PDFs are not served. Served by Eden Engine; not an official arXiv product.

Use it

Five steps: search, inspect, learn, run, settle. No per-tool setup; your agent reaches this tool through the meta-tools it already has.

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agent

// 1. search: find the tool
omnial_search({ query: "what you need" })

// 2. inspect: price and input schema
omnial_inspect({ tool: "arxivapi/get-paper" })

// 3. learn: read the usage guide at runtime
omnial_learn({ tool: "arxivapi/get-paper" })

// 4. run: price the exact call first, then run it
omnial_execute({ tool: "arxivapi/get-paper", input: { /* see input_schema */ }, dry_run: true })
omnial_execute({ tool: "arxivapi/get-paper", input: { /* ... */ } })

// 5. settle: the call is charged when it finishes, nothing to do

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Pricing

Every charge this tool can incur.

Charge	Price
Per call	$0.0026

Updated: Oct 21, 2026

Input and output schemas

Input schema

input_schema.json

{
  "type": "object",
  "required": [
    "id"
  ],
  "properties": {
    "id": {
      "type": "string",
      "pattern": "^([0-9]{4}\\.[0-9]{4,5}|[a-z]+(-[a-z]+)?(\\.[A-Z]{2})?/[0-9]{7})(v[0-9]+)?$",
      "maxLength": 40,
      "description": "arXiv identifier: new style such as 0704.0001 or 2104.00272, old style such as hep-th/9901001, optionally with a version suffix such as v2."
    }
  },
  "additionalProperties": false
}

Output schema

output_schema.json

{
  "type": "object",
  "required": [
    "totalResults",
    "startIndex",
    "itemsPerPage",
    "entries"
  ],
  "properties": {
    "entries": {
      "type": "array",
      "items": {
        "type": "object",
        "required": [
          "id",
          "title",
          "summary",
          "published",
          "updated",
          "authors",
          "categories"
        ],
        "properties": {
          "id": {
            "type": "string",
            "description": "arXiv identifier with version, for example 0704.0001v2 or cond-mat/0011267v1."
          },
          "doi": {
            "type": "string"
          },
          "title": {
            "type": "string"
          },
          "pdfUrl": {
            "type": "string",
            "description": "Link to the PDF on arxiv.org; the PDF itself is not served."
          },
          "authors": {
            "type": "array",
            "items": {
              "type": "object",
              "required": [
                "name"
              ],
              "properties": {
                "name": {
                  "type": "string"
                },
                "affiliation": {
                  "type": "string"
                }
              },
              "additionalProperties": true
            },
            "description": "Authors in order."
          },
          "comment": {
            "type": "string",
            "description": "The author's comment, for example page count."
          },
          "summary": {
            "type": "string",
            "description": "The abstract."
          },
          "updated": {
            "type": "string",
            "description": "Date of the latest version (ISO 8601)."
          },
          "published": {
            "type": "string",
            "description": "Date of the first version (ISO 8601)."
          },
          "categories": {
            "type": "array",
            "items": {
              "type": "string"
            },
            "description": "arXiv subject categories, for example hep-ph."
          },
          "journalRef": {
            "type": "string"
          },
          "abstractUrl": {
            "type": "string",
            "description": "The e-print's abstract page on arxiv.org."
          },
          "primaryCategory": {
            "type": "string"
          }
        },
        "additionalProperties": true
      },
      "description": "The e-prints on this page. Empty when nothing matches."
    },
    "startIndex": {
      "type": "integer"
    },
    "itemsPerPage": {
      "type": "integer",
      "description": "Page size the API used."
    },
    "totalResults": {
      "type": "integer",
      "description": "Total entries matching the query."
    }
  },
  "description": "One page of arXiv metadata records.",
  "additionalProperties": true
}