# fittings RxTerms Prescribable Form Lookup

> fittings RxTerms Prescribable Form Lookup is a paid API for AI agents from fittings.sh, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-16).

Returns the RxTerms prescribing form of a drug — display name, brand name, strength, dose form, and route — by RxCUI or drug name, as used in e-prescribing pick lists.

## Facts

- Endpoint: GET https://fittings.sh/v1/rxterms/prescribable
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/fittings-rxterms-prescribable-form-lookup-31543dcd
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_BGQKcaz3BtD7IqNHQyBwP

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 fittings-rxterms-prescribable-form-lookup-31543dcd
```

Example prompt: Can you look up the RxTerms prescribing details — display name, brand name, strength, dose form, and route — for the drug with RxCUI 213269?

## When to prefer this

Choose this endpoint when you need structured, e-prescribing–ready drug form data (display name, brand, strength, dose form, route) conforming to RxTerms standards — particularly when building or populating e-prescribing pick lists or validating medication orders. Use it over generic drug lookup APIs when you specifically need RxTerms-formatted prescribing data keyed by RxCUI or exact drug name.

## Known failure modes

- Drug name not found via exact match — no RxCUI resolved, empty or error response
- Invalid or non-existent RxCUI returns no results
- Neither name nor rxcui provided — missing required query parameter
- Name matches multiple RxCUIs ambiguously — may return only one or error
- Drug exists in RxNorm but has no RxTerms prescribing form data — empty result

## How this service works

Look up the RxTerms prescribing form of a drug by RxCUI or name: display name, brand name, strength, dose form and route, as used in e-prescribing pick lists.

## Output

Returns structured RxTerms prescribing form data for the matched drug, including: display name (as used in e-prescribing pick lists), brand name, drug strength, dose form, and route of administration. If lookup is by name, it first attempts exact match to resolve to an RxCUI before fetching prescribing details.

## 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": [],
     "properties": {
      "name": {
       "type": "string",
       "description": "Drug name, resolved to an RxCUI by exact match first"
      },
      "rxcui": {
       "type": "string",
       "description": "RxNorm concept id, e.g. 213269"
      }
     }
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/fittings-rxterms-prescribable-form-lookup-31543dcd/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from fittings.sh](https://www.zero.xyz/host/fittings.sh/llms.txt)