# PubMed Intelligence Search & Article Lookup

> PubMed Intelligence Search & Article Lookup is a paid API for AI agents from the-stall.intuitek.ai, paid per call via x402, $0.021/call, status unknown (last checked 2026-09-14).

Searches PubMed for biomedical literature or retrieves full details for a specific article by PMID, payable in USDC via x402.

## Facts

- Endpoint: GET https://the-stall.intuitek.ai/cap/pubmed-intel
- Price: $0.021/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/pubmed-intelligence-search-article-lookup-acc543fa
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_GiP5HEytyKh59dVRQtlO_

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 pubmed-intelligence-search-article-lookup-acc543fa
```

Example prompt: Search PubMed for randomized controlled trials on mRNA COVID-19 vaccine efficacy published between 2021 and 2024, and return up to 20 results.

## When to prefer this

Use this endpoint when an agent needs to query PubMed biomedical literature programmatically without an NCBI API key, especially when operating in a wallet-based, keyless x402 payment environment. Prefer it over direct NCBI API calls when no API key is available, or when integrating into an autonomous agent pipeline that pays per call in USDC on Base.

## Known failure modes

- No results found for an overly narrow or misspelled query
- Invalid PMID returns an error or empty response
- Unsupported article_type enum value causes a schema validation error
- year_start greater than year_end returns empty or error
- Payment not accepted if USDC balance on Base mainnet is insufficient
- Exceeding limit of 50 results may be silently capped

## How this service works

Domain-agnostic x402 capability chassis by IntuiTek¹. 300 AI-callable data services — pay USDC on Base mainnet. No accounts or API keys required.

## Output

Returns a list of matching PubMed articles (in search mode) including titles, PMIDs, abstracts, publication dates, and article types, or full article details for a given PMID in article mode.

## 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"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "mode"
     ],
     "properties": {
      "mode": {
       "enum": [
        "search",
        "article"
       ],
       "type": "string",
       "description": "search: find papers by query | article: full details for a specific PMID"
      },
      "pmid": {
       "type": [
        "string",
        "number"
       ],
       "description": "PubMed ID for article mode. Example: '38650234' or 38650234."
      },
      "limit": {
       "type": "number",
       "description": "Max results to return in search mode. Default 10, max 50."
      },
      "query": {
       "type": "string",
       "description": "Search query for search mode. Supports PubMed syntax: e.g. 'CRISPR cancer[Title]', 'Alzheimer treatment', 'COVID-19 mRNA vaccine efficacy'."
      },
      "year_end": {
       "type": "number",
       "description": "Filter search results to this year or earlier. Example: 2024."
      },
      "year_start": {
       "type": "number",
       "description": "Filter search results to this year or later. Example: 2020."
      },
      "article_type": {
       "enum": [
        "journal_article",
        "clinical_trial",
        "review",
        "meta_analysis",
        "case_report",
        "systematic_review",
        "randomized_trial"
       ],
       "type": "string",
       "description": "Filter by article type. clinical_trial: FDA-registered trials. review: narrative reviews. meta_analysis: quantitative evidence synthesis. systematic_review: PRISMA-style. randomized_trial: RCTs."
      }
     }
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/pubmed-intelligence-search-article-lookup-acc543fa/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from the-stall.intuitek.ai](https://www.zero.xyz/host/the-stall.intuitek.ai/llms.txt)