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#+title: kagi.el README
#+author: Bram Schoenmakers
#+macro: issue [[https://codeberg.org/bram85/kagi.el/issues/$1][issue #$1]]
#+macro: pr [[https://codeberg.org/bram85/kagi.el/pulls/$1][PR #$1]]
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#+begin_export html
<a href="https://melpa.org/#/kagi"><img alt="MELPA" src="https://melpa.org/packages/kagi-badge.svg"/></a>
<a href="https://stable.melpa.org/#/kagi"><img alt="MELPA Stable" src="https://stable.melpa.org/packages/kagi-badge.svg"/></a>
#+end_export
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* Introduction
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This Emacs package provides the following functionalities from the [[https://www.kagi.com][Kagi search engine]]:
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- FastGPT :: Kagi's open source LLM offering, as a shell inspired by [[https://github.com/xenodium/chatgpt-shell][xenodium's chatgpt-shell]].
- Universal Summarizer :: Summarizes texts, webpages, videos and more.
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Both functions are accessed through an [[https://help.kagi.com/kagi/api/overview.html][API]]. Before a call can be made, some setup should be done on the Kagi website (see below).
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* Commands and functions
** FastGPT
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The FastGPT functionality has only one command: =kagi-fastgpt-shell=. This opens a shell buffer in a new window where prompts can be typed. Kagi FastGPT typically returns output based on actual search results. When point is on one of the listed URLs, press =C-c RET= to open it.
** Universal Summarizer
- =kagi-summarize-buffer= :: Summarizes the content of a buffer and displays it in a separate buffer.
- =kagi-summarize-region= :: Similarly, the text inside the region is summarized and shown in a separate buffer.
- =kagi-summarize-url= :: Prompts for a URL of which a summary is composed and displayed.
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- =kagi-summarize= :: Function to retrieve a summary from a text or URL, to be used from Lisp code.
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Note that texts submitted to Kagi are subject to their [[https://kagi.com/privacy#Summarizer][Privacy Policy]].
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* Installation and configuration
kagi.el is available on [[https://melpa.org/#/kagi][MELPA]].
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To install from Git, clone with:
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: git clone https://codeberg.org/bram85/kagi.el.git /path/to/kagi.el
Note that kagi.el has a dependency on the [[https://melpa.org/#/shell-maker][shell-maker package]], which is available on MELPA.
You way want to load and configure the package with ~use-package~, for example put the following in your Emacs init file:
#+begin_src elisp
(use-package kagi
:commands
kagi-fastgpt-shell
kagi-summarize-buffer
kagi-summarize-region
kagi-summarize-url
:ensure t
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:custom
(kagi-api-token "ABCDEF")
;; or use a function, e.g. with the password-store package:
(kagi-api-token (lambda () (password-store-get "Kagi/API")))
;; summarizer settings
(kagi-summarizer-engine "cecil")
(kagi-summarize-default-language "EN")
(kagi-summarize-cache t)
:custom-face
;; kagi-code defaults to fixed-pitch, but can be overridden as
;; follows:
(kagi-code ((t (:inherit org-verbatim)))))
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#+end_src
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The token can be supplied directly as a string, but you could write a lambda to retrieve the token from a more secure location (e.g. with the combination of [[https://passwordstore.org/][pass(1)]] and the password-store package that comes with it).
** Kagi API setup
1. Create a Kagi account if you haven't done so already. An account is free, and comes with 100 trial searches.
2. In [[https://kagi.com/settings?p=billing_api][your account settings]], put a balance for the API part (note that this is a separate balance than the subscription). The recommendation is to start with a one-time charge of $5. A single query ranges from 1 to 5 cents typically, depending on the amount of tokens processed.
3. In [[https://kagi.com/settings?p=api][the API portal]], create an API token. Put the result in ~kagi-api-token~ (or write a function to access it securely).
** Configuration settings
#+begin_src emacs-lisp :exports results :results table :colnames '("Custom variable" "Description")
(let ((rows))
(mapatoms
(lambda (symbol)
(when (and (string-match "\\_<kagi"
(symbol-name symbol))
(custom-variable-p symbol))
(push `(,symbol
,(car
(split-string
(or (get (indirect-variable symbol)
'variable-documentation)
(get symbol 'variable-documentation)
"")
"\n")))
rows))))
(sort rows (lambda (item1 item2)
(string< (car item1) (car item2)))))
#+end_src
#+RESULTS:
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| Custom variable | Description |
|----------------------------------+---------------------------------------------------------|
| kagi-api-token | The Kagi API token. |
| kagi-fastgpt-api-url | The Kagi FastGPT API entry point. |
| kagi-stubbed-responses | Whether the package should return a stubbed response. |
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| kagi-summarizer-api-url | The Kagi Summarizer API entry point. |
| kagi-summarizer-cache | Determines whether the Summarizer should cache results. |
| kagi-summarizer-default-language | Default target language of the summary. |
| kagi-summarizer-engine | Which summary engine to use. |
*** COMMENT Attribution :noexport:
The code to generate the table of configuration items was inspired by an idea of [[https://xenodium.com/generating-elisp-org-docs/][Álvaro Ramírez]] (a.k.a. xenodium).
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** Examples of custom functions
By overriding a variable with a =let= construct you can (temporarily) deviate from the default / configured value. A few examples are shown below:
*** Language override
To obtain a Dutch summary of a video you may want to define the following function:
#+begin_src elisp
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(defun my/kagi/dutch-summary (text-or-url)
"Obtain a Dutch summary for the given TEXT-OR-URL."
(let ((kagi-summarize-default-language "NL"))
(kagi-summarize text-or-url)))
#+end_src
*** Caching override
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The [[https://help.kagi.com/kagi/api/summarizer.html][Summarizer API]] comes with the following note:
#+begin_quote
For handling sensitive information and documents, we recommend setting the 'cache' API parameter to False. In this way, the document will "flow through" our infrastructure and will not be retained anywhere after processing.
#+end_quote
In a similar fashion as above, you could define a function that disables caching temporarily (while having it enabled by default).
#+begin_src elisp
(defun my/kagi/sensitive-summary (text)
"Summarize the current TEXT with caching disabled.")
(let ((kagi-summarizer-cache nil))
(kagi-summarize text))
#+end_src
** Embark integration
The kagi.el package can be integrated with [[https://github.com/oantolin/embark][Embark]], to easily summarize a buffer, region or an URL. In order to be consistent with all keymaps, and to avoid clashes, the functionality is behind the /K/ prefix key. Press /K s/ to trigger the summarize functionality.
Add the following to your configuration to trigger summary functionality with key /K s/:
#+begin_src elisp
(defmacro embark-kagi-map (name function)
"Macro for defining a keymap for accessing Kagi functionality through Embark."
`(defvar-keymap ,name
:doc "Keymap for accessing Kagi functionality with Embark."
:parent nil
"s" #',function))
(embark-kagi-map embark-kagi-buffer-map kagi-summarize-buffer)
(keymap-set embark-buffer-map "K" embark-kagi-buffer-map)
(embark-kagi-map embark-kagi-region-map kagi-summarize-region)
(keymap-set embark-region-map "K" embark-kagi-region-map)
(embark-kagi-map embark-kagi-url-map kagi-summarize-url)
(keymap-set embark-url-map "K" embark-kagi-url-map)
#+end_src
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** Key bindings
Since the FastGPT shell inherits from =comint-mode= indirectly, many key bindings are also inherited. One of those bindings is =C-c C-o=, which flushes the last output. However, this binding is used in =org-mode= to open a URL an point. Typical FastGPT results include URLs so one may be tempted to type =C-c C-o= to browse the URL, only to have the output erased.
If you recognize this confusion, you may want to add the following line to your configuration file to shadow the =comint-mode= binding with something more appropriate:
#+begin_src elisp
(keymap-set fastgpt-shell-mode-map "C-c C-o" #'browse-url-at-point)
#+end_src
* Changelog
** 0.2pre
*** Breaking changes
- Some variables were renamed for consistency. The impact is considered low given the infancy of the package, and API URLs are typically not modified anyway.
| Old name | New name |
|---------------------------------+------------------------------------|
| =kagi-api-fastgpt-url= | =kagi-fastgpt-api-url= |
| =kagi-api-summarizer-url= | =kagi-summarizer-api-url= |
| =kagi-summarize-default-language= | =kagi-summarizer-default-language= |
*** Fixes
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- Better error handling for the summarizer
- Fix bug when the summarizer input contains a URL ({{{issue(2)}}})
- Check that the summarizer input is at least 50 words ({{{issue(2)}}})
** 0.1
Initial release.
* References
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- [[https://help.kagi.com/kagi/api/fastgpt.html][Kagi FastGPT API]]
- [[https://help.kagi.com/kagi/api/summarizer.html][Kagi Universal Summarizer API]]
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- [[https://github.com/xenodium/chatgpt-shell][xenodium's chatgpt-shell]], which also provides shell-maker required by the FastGPT shell.