zeph_core/agent/
session_config.rs

1// SPDX-FileCopyrightText: 2026 Andrei G <bug-ops>
2// SPDX-License-Identifier: MIT OR Apache-2.0
3
4use std::sync::Arc;
5
6use crate::config::{
7    Config, DebugConfig, DocumentConfig, GraphConfig, LearningConfig, OrchestrationConfig,
8    PersonaConfig, SecurityConfig, TimeoutConfig,
9};
10use crate::vault::Secret;
11
12/// Reserve ratio for `with_context_budget`: fraction of budget reserved for LLM reply.
13///
14/// Extracted from the hardcoded `0.20` literal used in both `spawn_acp_agent` and `runner.rs`.
15pub const CONTEXT_BUDGET_RESERVE_RATIO: f32 = 0.20;
16
17/// All config-derived fields needed to configure an `Agent` session.
18///
19/// This is the single source of truth for config → agent wiring.
20/// Adding a new config field requires exactly three changes:
21///
22/// 1. Add the field here.
23/// 2. Map it in [`AgentSessionConfig::from_config`].
24/// 3. Apply it in [`super::Agent::apply_session_config`] (destructure triggers a compile error if
25///    you forget step 3 — see the S4 note in the critic handoff).
26///
27/// ## What is NOT here
28///
29/// - **Shared runtime objects** (`provider`, `registry`, `memory`, `mcp_manager`, etc.) — these
30///   are expensive to create and shared across sessions; they stay in `SharedAgentDeps`.
31/// - **ACP-specific fields** (`acp_max_sessions`, bearer token, etc.) — transport-level, not
32///   agent-level.
33/// - **Optional runtime providers** (`summary_provider`, `judge_provider`,
34///   `quarantine_provider`) — these contain HTTP client pools (`AnyProvider`) that carry runtime
35///   state; callers wire them separately via `with_summary_provider` / `with_judge_provider` /
36///   `apply_quarantine_provider`.
37/// - **`mcp_config`** — passed alongside runtime MCP objects in `with_mcp()`; separating it
38///   from `mcp_tools` / `mcp_manager` would make the call site awkward.
39/// - **Runner-only fields** (`compression`, `routing`, `autosave`, `hybrid_search`, `trust_config`,
40///   `disambiguation_threshold`, `logging_config`, `subagent`, `experiment`, `instruction`,
41///   `lsp_hooks`, `response_cache`, `cost_tracker`) — not used in ACP sessions; keeping them out
42///   avoids unused-field noise and prevents inadvertent ACP behavior changes.
43/// - **Scheduler runtime objects** (`scheduler_executor`, broadcast senders) — runtime state,
44///   not config-derived values.
45#[derive(Clone)]
46#[allow(clippy::struct_excessive_bools)]
47pub struct AgentSessionConfig {
48    // Tool behavior
49    pub max_tool_iterations: usize,
50    pub max_tool_retries: usize,
51    pub max_retry_duration_secs: u64,
52    pub retry_base_ms: u64,
53    pub retry_max_ms: u64,
54    pub parameter_reformat_provider: String,
55    pub tool_repeat_threshold: usize,
56    pub tool_summarization: bool,
57    pub tool_call_cutoff: usize,
58    pub max_tool_calls_per_session: Option<u32>,
59    pub overflow_config: zeph_tools::OverflowConfig,
60    pub permission_policy: zeph_tools::PermissionPolicy,
61
62    // Model
63    pub model_name: String,
64    pub embed_model: String,
65
66    // Semantic cache
67    pub semantic_cache_enabled: bool,
68    pub semantic_cache_threshold: f32,
69    pub semantic_cache_max_candidates: u32,
70
71    // Memory / compaction
72    pub budget_tokens: usize,
73    pub soft_compaction_threshold: f32,
74    pub hard_compaction_threshold: f32,
75    pub compaction_preserve_tail: usize,
76    pub compaction_cooldown_turns: u8,
77    pub prune_protect_tokens: usize,
78    pub redact_credentials: bool,
79
80    // Security
81    pub security: SecurityConfig,
82    pub timeouts: TimeoutConfig,
83
84    // Feature configs
85    pub learning: LearningConfig,
86    pub document_config: DocumentConfig,
87    pub graph_config: GraphConfig,
88    pub persona_config: PersonaConfig,
89    pub trajectory_config: crate::config::TrajectoryConfig,
90    pub category_config: crate::config::CategoryConfig,
91    pub tree_config: crate::config::TreeConfig,
92    pub microcompact_config: crate::config::MicrocompactConfig,
93    pub autodream_config: crate::config::AutoDreamConfig,
94    pub magic_docs_config: crate::config::MagicDocsConfig,
95    pub anomaly_config: zeph_tools::AnomalyConfig,
96    pub result_cache_config: zeph_tools::ResultCacheConfig,
97    pub utility_config: zeph_tools::UtilityScoringConfig,
98    pub orchestration_config: OrchestrationConfig,
99    pub debug_config: DebugConfig,
100    pub server_compaction: bool,
101
102    /// Inject `<budget>` XML into the volatile system prompt section (#2267).
103    pub budget_hint_enabled: bool,
104
105    /// Custom secrets from config.
106    ///
107    /// Stored as `Arc` because `Secret` intentionally does not implement `Clone` —
108    /// the wrapper prevents accidental duplication. Iteration produces new `Secret`
109    /// values via `Secret::new(v.expose())` on the consumption side.
110    pub secrets: Arc<[(String, Secret)]>,
111}
112
113impl AgentSessionConfig {
114    /// Build from a resolved [`Config`] snapshot and a pre-computed `budget_tokens`.
115    ///
116    /// `budget_tokens` is passed as a parameter because its computation (`auto_budget_tokens`)
117    /// depends on the active provider and must happen before `AgentSessionConfig` is constructed.
118    #[must_use]
119    pub fn from_config(config: &Config, budget_tokens: usize) -> Self {
120        Self {
121            max_tool_iterations: config.agent.max_tool_iterations,
122            max_tool_retries: config.tools.retry.max_attempts,
123            max_retry_duration_secs: config.tools.retry.budget_secs,
124            retry_base_ms: config.tools.retry.base_ms,
125            retry_max_ms: config.tools.retry.max_ms,
126            parameter_reformat_provider: config.tools.retry.parameter_reformat_provider.clone(),
127            tool_repeat_threshold: config.agent.tool_repeat_threshold,
128            tool_summarization: config.tools.summarize_output,
129            tool_call_cutoff: config.memory.tool_call_cutoff,
130            max_tool_calls_per_session: config.tools.max_tool_calls_per_session,
131            overflow_config: config.tools.overflow.clone(),
132            permission_policy: config
133                .tools
134                .permission_policy(config.security.autonomy_level),
135            model_name: config.llm.effective_model().to_owned(),
136            embed_model: crate::provider_factory::effective_embedding_model(config),
137            semantic_cache_enabled: config.llm.semantic_cache_enabled,
138            semantic_cache_threshold: config.llm.semantic_cache_threshold,
139            semantic_cache_max_candidates: config.llm.semantic_cache_max_candidates,
140            budget_tokens,
141            soft_compaction_threshold: config.memory.soft_compaction_threshold,
142            hard_compaction_threshold: config.memory.hard_compaction_threshold,
143            compaction_preserve_tail: config.memory.compaction_preserve_tail,
144            compaction_cooldown_turns: config.memory.compaction_cooldown_turns,
145            prune_protect_tokens: config.memory.prune_protect_tokens,
146            redact_credentials: config.memory.redact_credentials,
147            security: config.security.clone(),
148            timeouts: config.timeouts,
149            learning: config.skills.learning.clone(),
150            document_config: config.memory.documents.clone(),
151            graph_config: config.memory.graph.clone(),
152            persona_config: config.memory.persona.clone(),
153            trajectory_config: config.memory.trajectory.clone(),
154            category_config: config.memory.category.clone(),
155            tree_config: config.memory.tree.clone(),
156            microcompact_config: config.memory.microcompact.clone(),
157            autodream_config: config.memory.autodream.clone(),
158            magic_docs_config: config.magic_docs.clone(),
159            anomaly_config: config.tools.anomaly.clone(),
160            result_cache_config: config.tools.result_cache.clone(),
161            utility_config: config.tools.utility.clone(),
162            orchestration_config: config.orchestration.clone(),
163            debug_config: config.debug.clone(),
164            server_compaction: config.llm.providers.iter().any(|e| e.server_compaction),
165            budget_hint_enabled: config.agent.budget_hint_enabled,
166            secrets: config
167                .secrets
168                .custom
169                .iter()
170                .map(|(k, v)| (k.clone(), Secret::new(v.expose().to_owned())))
171                .collect::<Vec<_>>()
172                .into(),
173        }
174    }
175}
176
177#[cfg(test)]
178mod tests {
179    use super::*;
180
181    #[test]
182    fn from_config_maps_all_fields() {
183        let config = Config::default();
184        let budget = 100_000;
185        let sc = AgentSessionConfig::from_config(&config, budget);
186
187        assert_eq!(sc.max_tool_iterations, config.agent.max_tool_iterations);
188        assert_eq!(sc.max_tool_retries, config.tools.retry.max_attempts);
189        assert_eq!(sc.max_retry_duration_secs, config.tools.retry.budget_secs);
190        assert_eq!(sc.retry_base_ms, config.tools.retry.base_ms);
191        assert_eq!(sc.retry_max_ms, config.tools.retry.max_ms);
192        assert_eq!(
193            sc.parameter_reformat_provider,
194            config.tools.retry.parameter_reformat_provider
195        );
196        assert_eq!(sc.tool_repeat_threshold, config.agent.tool_repeat_threshold);
197        assert_eq!(sc.tool_summarization, config.tools.summarize_output);
198        assert_eq!(sc.tool_call_cutoff, config.memory.tool_call_cutoff);
199        assert_eq!(sc.model_name, config.llm.effective_model());
200        assert_eq!(
201            sc.embed_model,
202            crate::provider_factory::effective_embedding_model(&config)
203        );
204        assert_eq!(sc.semantic_cache_enabled, config.llm.semantic_cache_enabled);
205        assert!(
206            (sc.semantic_cache_threshold - config.llm.semantic_cache_threshold).abs()
207                < f32::EPSILON
208        );
209        assert_eq!(
210            sc.semantic_cache_max_candidates,
211            config.llm.semantic_cache_max_candidates
212        );
213        assert_eq!(sc.budget_tokens, budget);
214        assert!(
215            (sc.soft_compaction_threshold - config.memory.soft_compaction_threshold).abs()
216                < f32::EPSILON
217        );
218        assert!(
219            (sc.hard_compaction_threshold - config.memory.hard_compaction_threshold).abs()
220                < f32::EPSILON
221        );
222        assert_eq!(
223            sc.compaction_preserve_tail,
224            config.memory.compaction_preserve_tail
225        );
226        assert_eq!(
227            sc.compaction_cooldown_turns,
228            config.memory.compaction_cooldown_turns
229        );
230        assert_eq!(sc.prune_protect_tokens, config.memory.prune_protect_tokens);
231        assert_eq!(sc.redact_credentials, config.memory.redact_credentials);
232        assert_eq!(sc.graph_config.enabled, config.memory.graph.enabled);
233        assert_eq!(
234            sc.orchestration_config.enabled,
235            config.orchestration.enabled
236        );
237        assert_eq!(
238            sc.orchestration_config.max_tasks,
239            config.orchestration.max_tasks
240        );
241        assert_eq!(sc.anomaly_config.enabled, config.tools.anomaly.enabled);
242        assert_eq!(
243            sc.result_cache_config.enabled,
244            config.tools.result_cache.enabled
245        );
246        assert_eq!(
247            sc.result_cache_config.ttl_secs,
248            config.tools.result_cache.ttl_secs
249        );
250        assert_eq!(sc.debug_config.enabled, config.debug.enabled);
251        assert_eq!(
252            sc.document_config.rag_enabled,
253            config.memory.documents.rag_enabled
254        );
255        assert_eq!(
256            sc.overflow_config.threshold,
257            config.tools.overflow.threshold
258        );
259        assert_eq!(
260            sc.permission_policy.autonomy_level(),
261            config.security.autonomy_level
262        );
263        assert_eq!(sc.security.autonomy_level, config.security.autonomy_level);
264        assert_eq!(sc.timeouts.llm_seconds, config.timeouts.llm_seconds);
265        assert_eq!(sc.learning.enabled, config.skills.learning.enabled);
266        assert_eq!(
267            sc.server_compaction,
268            config.llm.providers.iter().any(|e| e.server_compaction)
269        );
270        assert_eq!(sc.secrets.len(), config.secrets.custom.len());
271    }
272}
zeph_core/agent/session_config.rs

zeph_core/agent/
session_config.rs
