1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
|
;;; kaakaa --- Tiny, security-focused AI agent in Guile
;;; Copyright © 2026 Arun Isaac <arunisaac@systemreboot.net>
;;;
;;; This file is part of kaakaa.
;;;
;;; kaakaa is free software: you can redistribute it and/or modify it
;;; under the terms of the GNU General Public License as published by
;;; the Free Software Foundation, either version 3 of the License, or
;;; (at your option) any later version.
;;;
;;; kaakaa is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
;;; General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with kaakaa. If not, see <https://www.gnu.org/licenses/>.
(define-module (kaakaa tools)
#:use-module ((rnrs base) #:select (assertion-violation))
#:use-module (rnrs conditions)
#:use-module (rnrs exceptions)
#:use-module (rnrs records syntactic)
#:use-module (srfi srfi-1)
#:use-module (ice-9 match)
#:use-module (gnu build linux-container)
#:use-module (gnu system file-systems)
#:use-module (json)
#:use-module (lens)
#:use-module (kaakaa container)
#:use-module (kaakaa records)
#:use-module (kaakaa utils)
#:export (tool-call-parse-failure?
tool-call-parse-failure-message
tool->spec
spec->tool-call
eval-tool-call))
(define (readonly-cwd-only-mappings cwd arguments)
(list (file-system-mapping
(source cwd)
(target source)
(writable? #f))))
(define-public-record-type* (<tool> tool tool?)
(lambda (constructor)
(lambda* (#:key
description (parameters '()) proc
(container-mappings readonly-cwd-only-mappings)
(container-namespaces %namespaces)
title kind)
(unless description
(raise-exception
(condition (make-violation)
(make-message-condition "tool requires description"))))
(unless proc
(raise-exception
(condition (make-violation)
(make-message-condition "tool requires proc"))))
(constructor description parameters proc
container-mappings container-namespaces title kind)))
(fields (description tool-description)
;; Association list mapping parameter names to <tool-parameter>
;; objects.
(parameters tool-parameters)
(proc tool-proc)
(container-mappings tool-container-mappings)
(container-namespaces tool-container-namespaces)
(title tool-title)
(kind tool-kind)))
(define-public-record-type* (<tool-parameter> tool-parameter tool-parameter?)
(lambda (constructor)
(lambda* (#:key type description (required? #t))
(unless type
(raise-exception
(condition (make-violation)
(make-message-condition "tool parameter requires type"))))
(unless description
(raise-exception
(condition (make-violation)
(make-message-condition "tool parameter requires description"))))
(constructor type description required?)))
(fields (type tool-parameter-type)
(description tool-parameter-description)
(required? tool-parameter-required?)))
(define-public-record-type* (<array-type> array-type array-type?)
(fields (subtype array-type-subtype)))
(define (tool->spec name tool)
"Serialize @var{tool} of @var{name} to OpenAI-compatible JSON spec."
`(("type" . "function")
("function"
("name" . ,name)
("description" . ,(tool-description tool))
("parameters"
("type" . "object")
("properties" .
,(map (match-lambda
((name . parameter)
;; TODO: Check if the OpenAI API supports arrays of arrays and
;; other more deeply nested types.
(let ((type (tool-parameter-type parameter)))
`(,name
("description" . ,(tool-parameter-description parameter))
("type" . ,(if (array-type? type)
"array"
type))
,@(if (array-type? type)
`(("items" . ,(array-type-subtype type)))
'())))))
(tool-parameters tool)))
("required" .
,(list->vector
(filter-map (match-lambda
((name . parameter)
(and (tool-parameter-required? parameter)
name)))
(tool-parameters tool))))))))
(define-public-record-type* (<tool-call> tool-call tool-call?)
(fields (session-id tool-call-session-id)
(session-cwd tool-call-session-cwd)
(id tool-call-id)
(function tool-call-function)
(arguments tool-call-arguments)
;; One of 'approved, 'rejected or 'cancelled
(status tool-call-status lensed)))
(define-public-record-type* (<tool-call-result> tool-call-result tool-call-result?)
(fields (session-id tool-call-result-session-id)
(call-id tool-call-result-call-id)
(title tool-call-result-title)
(kind tool-call-result-kind)
(arguments tool-call-result-arguments)
(json tool-call-result-json)
(success? tool-call-result-success?)))
(define-condition-type &tool-call-parse-failure &serious
tool-call-parse-failure tool-call-parse-failure?
(message tool-call-parse-failure-message))
(define-condition-type &tool-call-failure &serious
tool-call-failure tool-call-failure?
(message tool-call-failure-message))
(define (spec->tool-call session-id session-cwd tools spec)
"Deserialize JSON tool call @var{spec} into a @code{<tool-call>}
object. Raise a @code{&tool-call-parse-failure} condition if deserialization
fails.
@var{session-id} and @var{session-cwd} are the ID and current working directory
of the session the tool call pertains to. @var{tools} is an association list
mapping the names of all available tools to their respective @code{<tool>}
objects."
;; TODO: Assert that type is function, and do more sanitization.
(let* ((args (guard (c (else
(raise-exception
(tool-call-parse-failure
"Error: Arguments are not valid JSON"))))
(json-string->scm (focus (in "function" "arguments")
spec))))
(name (focus (in "function" "name")
spec))
(tool (cond
((focus (key-ref name) tools)
=> identity)
(else
(raise-exception
(tool-call-parse-failure
(string-append "Error: Function " name " does not exist")))))))
(tool-call session-id
session-cwd
(focus (key-ref "id")
spec)
name
;; Only pick out valid arguments, and error out if any required
;; arguments are missing.
(filter-map (match-lambda
((arg-name . parameter)
(cond
((assoc arg-name args)
=> identity)
(else
(and (tool-parameter-required? parameter)
(raise-exception
(tool-call-failure
(string-append "Error: Missing required argument "
arg-name))))))))
(tool-parameters tool))
'pending-approval)))
(define (eval-tool-call tool-call tools)
"Evaluate @var{tool-call} and return a @code{<tool-call-result>}
object. @var{tools} is an association list mapping the names of all
available tools to their respective @code{<tool>} objects."
(let ((tool (focus (key-ref (tool-call-function tool-call))
tools)))
(case (focus tool-call-status tool-call)
;; User approved tool call.
((approved)
(guard (c ((tool-call-failure? c)
(tool-call-result (tool-call-session-id tool-call)
(tool-call-id tool-call)
#f
#f
(tool-call-arguments tool-call)
`(("role" . "tool")
("tool_call_id" . ,(tool-call-id tool-call))
("content" . ,(tool-call-failure-message c)))
#f)))
(let* ((args (alist->plist (tool-call-arguments tool-call)))
;; Actually evaluate tool call.
(tool-result
(call-with-container*
(map file-system-mapping->bind-mount
((tool-container-mappings tool)
(tool-call-session-cwd tool-call)
args))
(tool-container-namespaces tool)
(lambda ()
(chdir (tool-call-session-cwd tool-call))
(apply (tool-proc tool)
args)))))
;; Build result.
(tool-call-result (tool-call-session-id tool-call)
(tool-call-id tool-call)
(apply (tool-title tool) args)
(apply (tool-kind tool) args)
(tool-call-arguments tool-call)
`(("role" . "tool")
("tool_call_id" . ,(tool-call-id tool-call))
("content" . ,(container-result-output tool-result)))
(zero? (container-result-exit-value tool-result))))))
;; User cancelled or rejected tool call.
((cancelled rejected)
(tool-call-result (tool-call-session-id tool-call)
(tool-call-id tool-call)
#f
#f
(tool-call-arguments tool-call)
`(("role" . "tool")
("tool_call_id" . ,(tool-call-id tool-call))
("content" .
,(case (focus tool-call-status tool-call)
((rejected)
"Error: User denied permission for this tool call")
((cancelled)
"Error: User cancelled this tool call"))))
#f))
(else
(assertion-violation (focus tool-call-status tool-call)
"Invalid tool call status")))))
|
