Search Open-i (NLM) for medical, clinical, graphical and dental images.

Open-i (https://openi.nlm.nih.gov) is the U.S. National Library of Medicine's open-access biomedical image search engine. It indexes figures, charts, X-rays, photographs and illustrations from PubMed Central articles and other collections. No API key is required.

┌──────────────────────────────────────────────────────────────────────┐ │ ⚠️ TRANSLATION RULE — READ THIS BEFORE CALLING THE TOOL │ │ │ │ The Open-i index is ENGLISH-ONLY. You (the LLM agent) MUST translate │ │ every Portuguese term the user gives you into English BEFORE putting │ │ it into query. Never send Portuguese to the API. │ │ │ │ "incisão oral" -> "oral incision" │ │ "odontolegista" -> "forensic dentistry" │ │ "anatomia dental" -> "dental anatomy" │ │ "radiografia panorâmica"-> "panoramic radiograph" │ │ "cárie" -> "dental caries" │ │ │ │ If the user writes in English already, pass it through unchanged. │ └──────────────────────────────────────────────────────────────────────┘

Args: query: The search terms, IN ENGLISH (translate first — see rule above). m: Start index of the result window (1-based). Default 1. n: End index of the result window. Default 10. Ask for a small window (e.g. m=1, n=10) unless the user wants more. it: Image Type filter. One or more comma-separated codes from [xg, xm, x, u, ph, p, mc, m, g, c]. Most useful: g = graphics / charts / diagrams / illustrations ph = photograph (clinical / gross photo) x = X-ray xm = mammography xg = angiography u = ultrasound c = CT m = MRI mc = microscopy / histology p = PET Leave empty to search all image types. sp: Specialties filter. Comma-separated codes, e.g. "d" for dentistry. Full set: [b, bc, c, ca, cc, d, de, dt, e, en, f, eh, g, ge, gr, gy, h, i, id, im, n, ne, nu, o, or, ot, p, py, pu, r, s, t, u, v, vil]. Leave empty for all specialties. at: Article Type filter. Comma-separated codes from [ab, bk, bf, cr, dp, di, ed, ib, in, lt, mr, ma, ne, ob, pr, or, re, ra, rw, sr, rr, os, hs, ot]. Leave empty for all article types.

Returns: A dict with keys: query - the (English) query that was actually sent total - total number of matches Open-i reports returned - how many results are in this response api_url - the exact URL that was requested (for transparency) results - a clean list; each item has: title, image_url, thumbnail_url, summary, article_url, uid

To show a result to the user, render the image with Markdown:
    ![title](image_url)
and cite the source with [Source](article_url).

On failure the dict instead has:
  error    - a human-readable message
  status   - the HTTP status code if the API responded (400/500/…)

Return the Open-i filter code reference (image types, specialties, article types).

Handy when you need to look up which filter code corresponds to what, without leaving the conversation.