:PROPERTIES:
:ID:       52799ee8-693f-49da-97bc-2c02bc6a7ef7
:CREATED:  [2026-03-30 Mon 21:16]
:EDITED:   [2026-04-07 Tue 13:42]
:END:
#+TITLE: SKILL: Gemini Provider Agent (Universal Literate Note)
#+STARTUP: content
#+FILETAGS: :llm:provider:gemini:google:psf:

* Overview
The *Gemini Provider Agent* provides a dual-path interface to Google's neural models. It supports both the low-latency Developer API and the high-fidelity Web/Pro interface.

* Phase A: Demand (PRD)
:PROPERTIES:
:STATUS: SIGNED
:END:

** 1. Purpose
Enable a hybrid cost/performance strategy for Google's models.

** 2. User Needs
- *API Path:* Reliable, programmatic access for system reflexes.
- *Web Path:* Zero-cost access to Pro-tier reasoning via browser session bridging.

* Phase B: Blueprint (PROTOCOL)
:PROPERTIES:
:STATUS: SIGNED
:END:

** 1. Architectural Intent
Expose two distinct backends to the kernel: =:gemini-api= and =:gemini-web=.

** 2. Semantic Interfaces

*** `execute-gemini-api-request`
:signature `(execute-gemini-api-request prompt system-prompt &key model) :string`
:description "Direct call to the Google AI Studio API."

*** `execute-gemini-web-request`
:signature `(execute-gemini-web-request prompt system-prompt) :string`
:description "Routes the request through the Web Research browser proxy."

* Phase D: Build (Implementation)

** API Implementation
#+begin_src lisp :tangle ../projects/org-skill-provider-gemini/src/provider-logic.lisp
(in-package :org-agent)

(defun execute-gemini-request (prompt system-prompt &key model)
  (let* ((auth (get-provider-auth :gemini)) (api-key (getf auth :api-key)) (bearer-token (getf auth :bearer-token))
         (endpoint-base (if model (format nil "https://generativelanguage.googleapis.com/v1/models/~a:generateContent" model)
                            "https://generativelanguage.googleapis.com/v1/models/gemini-1.5-flash-latest:generateContent")))
    (unless (or api-key bearer-token) (return-from execute-gemini-request "(:type :LOG :payload (:text \"Authentication missing\"))"))
    (let* ((url (if api-key (format nil "~a?key=~a" endpoint-base api-key) endpoint-base))
           (headers `(("Content-Type" . "application/json") ,@(when bearer-token `(("Authorization" . ,(format nil "Bearer ~a" bearer-token))))))
           (body (cl-json:encode-json-to-string `((contents . ((parts . ((text . ,(format nil "~a~%~%Prompt: ~a" system-prompt prompt))))))))))
      (handler-case (let* ((response (dex:post url :headers headers :content body :connect-timeout 10 :read-timeout 30)) (json (cl-json:decode-json-from-string response)))
                      (cdr (assoc :text (cdr (assoc :parts (car (cdr (assoc :parts (car (cdr (assoc :candidates json)))))))))))
        (error (c) (format nil "(:type :LOG :payload (:text \"Neural Engine Failure: ~a\"))" c))))))

(defun execute-gemini-api-request (prompt system-prompt &key model)
  "Implementation uses the standard kernel execute-gemini-request logic."
  (execute-gemini-request prompt system-prompt :model model))
#+end_src

** Web Implementation
#+begin_src lisp :tangle ../projects/org-skill-provider-gemini/src/provider-logic.lisp
(defun execute-gemini-web-request (prompt system-prompt &key model)
  (declare (ignore model))
  "Dispatches to the browser-based Web Research skill."
  (let ((full-prompt (format nil "~a~%~%Prompt: ~a" system-prompt prompt)))
    (uiop:symbol-call :org-agent.skills.org-skill-web-research :ask-gemini-web full-prompt)))
#+end_src

* Registration
#+begin_src lisp
(progn
  (org-agent:register-neuro-backend :gemini #'execute-gemini-request)
  (org-agent:register-neuro-backend :gemini-api #'execute-gemini-api-request)
  (org-agent:register-neuro-backend :gemini-web #'execute-gemini-web-request)
  
  (defskill :skill-provider-gemini
    :priority 90
    :trigger (lambda (context) nil)
    :neuro (lambda (context) nil)
    :symbolic (lambda (action context) action)))
#+end_src