# Elements Live – Top Papers by Research Topic

> Elements Live – Top Papers by Research Topic is a paid API for AI agents from www.elements-live.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-12).

Returns the top academic papers driving research intensity for a given keyword or sector topic, including title, DOI, venue, year, and citation counts.

## Facts

- Endpoint: GET https://www.elements-live.com/v1/subjects/:subject_type/:subject_id/papers?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/elements-live-top-papers-by-research-topic-6c35245a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_shZqLE6KRMWKHtVeruMuP

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability elements-live-top-papers-by-research-topic-6c35245a
```

Example prompt: Pull the top papers driving research intensity for the 'solid-state batteries' keyword on Elements Live — I want titles, DOIs, venues, publication years, and citation counts.

## When to prefer this

Use this endpoint when you need the specific academic papers most responsible for a research topic's research intensity score — as opposed to retrieving intensity metrics, historical trends, or associated chemical elements. It is the right choice when the agent needs bibliometric detail (DOI, venue, citations) rather than aggregate statistics. Prefer this over a general literature search when you want papers ranked by research intensity contribution rather than raw citation count or recency.

## Known failure modes

- Invalid or unrecognized subject_id returns no results or an error — use /v1/subjects/search to resolve valid IDs first
- Invalid subject_type (not 'keyword' or 'sector') causes a schema validation error
- Payment failure (x402) blocks the response if USDC is not properly authorized
- Empty result set if the topic has no associated papers indexed
- Rate limiting or quota exhaustion for high-frequency callers

## How this service works

Top papers driving a research topic's research intensity (title, DOI, venue, year, citations).

## Output

A ranked list of top academic papers associated with the specified research topic (keyword or sector), each with metadata including title, DOI, publication venue, year of publication, and citation count — reflecting their contribution to the topic's research intensity score.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "pathParams": {
     "type": "object",
     "required": [
      "subject_type",
      "subject_id"
     ],
     "properties": {
      "subject_id": {
       "type": "string",
       "description": "From /v1/subjects/search"
      },
      "subject_type": {
       "enum": [
        "keyword",
        "sector"
       ],
       "type": "string"
      }
     }
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "required": [
      "entity",
      "sort",
      "count",
      "total_ranked",
      "results",
      "notes",
      "canonical_url",
      "total_papers"
     ],
     "properties": {
      "sort": {
       "type": "string"
      },
      "count": {
       "type": "integer"
      },
      "notes": {
       "type": "object"
      },
      "entity": {
       "type": "object",
       "required": [
        "type",
        "id",
        "name"
       ],
       "properties": {
        "id": {
         "type": "string"
        },
        "name": {
         "type": "string"
        },
        "type": {
         "type": "string"
        }
       }
      },
      "results": {
       "type": "array",
       "items": {
        "type": "object",
        "required": [
         "rank",
         "doi",
         "title",
         "venue",
         "year",
         "citations",
         "impact_score",
         "citation_percentile",
         "cluster",
         "url",
         "ris_contribution"
        ]
       }
      },
      "total_ranked": {
       "type": "integer"
      },
      "canonical_url": {
       "type": "string"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/elements-live-top-papers-by-research-topic-6c35245a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from www.elements-live.com](https://www.zero.xyz/host/www.elements-live.com/llms.txt)