# Saylor Innovations RxTerms Drug Lookup

> Saylor Innovations RxTerms Drug Lookup is a paid API for AI agents from saylorinnovations.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-18).

Returns prescribable drug names with route, available strengths, dose forms, and RxCUI identifiers from NLM RxTerms for medication autocomplete and lookup

## Facts

- Endpoint: GET https://saylorinnovations.com/api/medical/rxterms?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-18
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/saylor-innovations-rxterms-drug-lookup-0ba4f4e1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_kdO3NSxdb972pCTwLa4MT

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-rxterms-drug-lookup-0ba4f4e1
```

Example prompt: Search NLM RxTerms for prescribable drug names matching 'metformin' and return the available strengths, dose forms, and RxCUI identifiers — give me up to 15 results.

## When to prefer this

Choose this endpoint when you need structured, NLM-sourced medication data including RxCUI identifiers, dose forms, and strengths for drug name autocomplete, EHR integration, or pharmacy lookup. Prefer it over general web search when you need machine-readable RxNorm concept IDs and standardized drug formulation data in a single call.

## Known failure modes

- Empty drugs array if no drugs match the query fragment
- Missing or empty rxcuis array for drugs without mapped RxNorm concepts
- Limit parameter out of range (1-25) may be ignored or cause an error
- Very short query fragments may return too many or irrelevant results
- NLM RxTerms data may be outdated if not recently refreshed by the provider

## How this service works

Prescribable drug names from NLM RxTerms with route, available strengths, dose forms and RxCUI identifiers for medication autocomplete and lookup

## Output

Returns a JSON object with the interpreted query string, total matching count, and an array of matching drugs — each with the drug name, available strengths and dose forms, and an array of RxCUI identifiers. Also includes a source field indicating NLM RxTerms and an optional note with context or caveats.

## 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": [
      "q"
     ],
     "properties": {
      "q": {
       "type": "string",
       "description": "Drug name or fragment"
      },
      "limit": {
       "type": "string",
       "description": "optional 1-25, default 10"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "json"
    },
    "example": {
     "type": "object",
     "required": [
      "query",
      "drugs"
     ],
     "properties": {
      "note": {
       "type": "string",
       "description": "Caveat or context for reading the result"
      },
      "count": {
       "type": "number",
       "description": "Number of items returned"
      },
      "drugs": {
       "type": "array",
       "items": {
        "type": "object",
        "properties": {
         "name": {
          "description": "Name"
         },
         "rxcuis": {
          "type": [
           "array",
           "null"
          ],
          "description": "RxNorm concept ids for the strengths and forms"
         },
         "strengths_and_forms": {
          "description": "Strengths and forms"
         }
        }
       },
       "description": "Matching drug names with strengths, dose forms and RxCUIs"
      },
      "query": {
       "type": "string",
       "description": "The query as the server interpreted it"
      },
      "total": {
       "type": "number",
       "description": "Total number of matching items"
      },
      "source": {
       "type": "string",
       "description": "Data source the values come from"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/saylor-innovations-rxterms-drug-lookup-0ba4f4e1/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)