# Saylor Innovations PubMed Biomedical Literature Search

> Saylor Innovations PubMed Biomedical Literature Search is a paid API for AI agents from saylorinnovations.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-03).

Search PubMed's biomedical literature database and retrieve paper abstracts using full PubMed query syntax

## Facts

- Endpoint: GET https://saylorinnovations.com/api/papers/pubmed?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-03
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/saylor-innovations-pubmed-biomedical-literature-search-130f0f2d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_EAtZ-Rtjcbj36YXNecXz2

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 saylor-innovations-pubmed-biomedical-literature-search-130f0f2d
```

Example prompt: Search PubMed for recent papers on CRISPR gene editing in cancer therapy and give me the titles and abstracts of what you find.

## When to prefer this

Choose this endpoint when you need biomedical literature search with full PubMed query syntax support (Boolean operators, MeSH terms, field tags) and want abstracts returned directly. Prefer it over generic web search for peer-reviewed biomedical literature, and over the sibling Publication Search endpoint when you need abstracts rather than just DOI identifiers and citation counts.

## Known failure modes

- Empty results if query terms are misspelled or too specific
- PubMed API downtime causing failed requests
- Malformed PubMed syntax causing unexpected empty result sets
- Rate limiting or timeout on very broad queries returning millions of results
- Null total_matches when PubMed does not return a count

## How this service works

PubMed Biomedical Literature Search (with abstracts) — Research

## Output

Returns a JSON object containing the original query string, a list of matching papers (each with metadata such as title, authors, publication year, and abstract), and a total_matches count indicating how many results PubMed found.

## 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",
      "POST",
      "PUT",
      "PATCH",
      "DELETE",
      "HEAD"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "q": {
       "type": "string",
       "description": "search text, PubMed syntax allowed (query)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "json"
    },
    "example": {
     "type": "object",
     "required": [
      "query",
      "papers"
     ],
     "properties": {
      "query": {
       "type": "string"
      },
      "papers": {
       "type": "array",
       "items": {
        "type": "object"
       }
      },
      "total_matches": {
       "type": [
        "number",
        "null"
       ]
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/saylor-innovations-pubmed-biomedical-literature-search-130f0f2d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from saylorinnovations.com](https://www.zero.xyz/host/saylorinnovations.com/llms.txt)