Opencode-DCP · Tarquinen · Jan 3, 2026 · Jan 3, 2026
diff --git a/README.md b/README.md
@@ -41,8 +41,6 @@ DCP uses multiple tools and strategies to reduce context size:
 
 **Purge Errors** — Prunes tool inputs for tools that returned errors after a configurable number of turns (default: 4). Error messages are preserved for context, but the potentially large input content is removed. Runs automatically on every request with zero LLM cost.
 
-**On Idle Analysis** — Uses a language model to semantically analyze conversation context during idle periods and identify tool outputs that are no longer relevant. Disabled by default (legacy behavior).
-
 Your session history is never modified—DCP replaces pruned content with placeholders before sending requests to your LLM.
 
 ## Impact on Prompt Caching
@@ -118,18 +116,6 @@ DCP uses its own config file:
             // Additional tools to protect from pruning
             "protectedTools": [],
         },
-        // (Legacy) Run an LLM to analyze what tool calls are no longer relevant on idle
-        "onIdle": {
-            "enabled": false,
-            // Additional tools to protect from pruning
-            "protectedTools": [],
-            // Override model for analysis (format: "provider/model")
-            // "model": "anthropic/claude-haiku-4-5",
-            // Show toast notifications when model selection fails
-            "showModelErrorToasts": true,
-            // When true, fallback models are not permitted
-            "strictModelSelection": false,
-        },
     },
 }
 ```

diff --git a/index.ts b/index.ts
@@ -1,10 +1,10 @@
 import type { Plugin } from "@opencode-ai/plugin"
 import { getConfig } from "./lib/config"
 import { Logger } from "./lib/logger"
-import { loadPrompt } from "./lib/prompt"
+import { loadPrompt } from "./lib/prompts"
 import { createSessionState } from "./lib/state"
 import { createDiscardTool, createExtractTool } from "./lib/strategies"
-import { createChatMessageTransformHandler, createEventHandler } from "./lib/hooks"
+import { createChatMessageTransformHandler } from "./lib/hooks"
 
 const plugin: Plugin = (async (ctx) => {
     const config = getConfig(ctx)
@@ -91,7 +91,6 @@ const plugin: Plugin = (async (ctx) => {
                 )
             }
         },
-        event: createEventHandler(ctx.client, config, state, logger, ctx.directory),
     }
 }) satisfies Plugin
 

diff --git a/lib/config.ts b/lib/config.ts
@@ -9,14 +9,6 @@ export interface Deduplication {
     protectedTools: string[]
 }
 
-export interface OnIdle {
-    enabled: boolean
-    model?: string
-    showModelErrorToasts?: boolean
-    strictModelSelection?: boolean
-    protectedTools: string[]
-}
-
 export interface DiscardTool {
     enabled: boolean
 }
@@ -63,7 +55,6 @@ export interface PluginConfig {
         deduplication: Deduplication
         supersedeWrites: SupersedeWrites
         purgeErrors: PurgeErrors
-        onIdle: OnIdle
     }
 }
 
@@ -102,13 +93,6 @@ export const VALID_CONFIG_KEYS = new Set([
     "strategies.purgeErrors.enabled",
     "strategies.purgeErrors.turns",
     "strategies.purgeErrors.protectedTools",
-    // strategies.onIdle
-    "strategies.onIdle",
-    "strategies.onIdle.enabled",
-    "strategies.onIdle.model",
-    "strategies.onIdle.showModelErrorToasts",
-    "strategies.onIdle.strictModelSelection",
-    "strategies.onIdle.protectedTools",
 ])
 
 // Extract all key paths from a config object for validation
@@ -272,60 +256,6 @@ function validateConfigTypes(config: Record<string, any>): ValidationError[] {
             })
         }
 
-        // onIdle
-        if (strategies.onIdle) {
-            if (
-                strategies.onIdle.enabled !== undefined &&
-                typeof strategies.onIdle.enabled !== "boolean"
-            ) {
-                errors.push({
-                    key: "strategies.onIdle.enabled",
-                    expected: "boolean",
-                    actual: typeof strategies.onIdle.enabled,
-                })
-            }
-            if (
-                strategies.onIdle.model !== undefined &&
-                typeof strategies.onIdle.model !== "string"
-            ) {
-                errors.push({
-                    key: "strategies.onIdle.model",
-                    expected: "string",
-                    actual: typeof strategies.onIdle.model,
-                })
-            }
-            if (
-                strategies.onIdle.showModelErrorToasts !== undefined &&
-                typeof strategies.onIdle.showModelErrorToasts !== "boolean"
-            ) {
-                errors.push({
-                    key: "strategies.onIdle.showModelErrorToasts",
-                    expected: "boolean",
-                    actual: typeof strategies.onIdle.showModelErrorToasts,
-                })
-            }
-            if (
-                strategies.onIdle.strictModelSelection !== undefined &&
-                typeof strategies.onIdle.strictModelSelection !== "boolean"
-            ) {
-                errors.push({
-                    key: "strategies.onIdle.strictModelSelection",
-                    expected: "boolean",
-                    actual: typeof strategies.onIdle.strictModelSelection,
-                })
-            }
-            if (
-                strategies.onIdle.protectedTools !== undefined &&
-                !Array.isArray(strategies.onIdle.protectedTools)
-            ) {
-                errors.push({
-                    key: "strategies.onIdle.protectedTools",
-                    expected: "string[]",
-                    actual: typeof strategies.onIdle.protectedTools,
-                })
-            }
-        }
-
         // supersedeWrites
         if (strategies.supersedeWrites) {
             if (
@@ -459,12 +389,6 @@ const defaultConfig: PluginConfig = {
             turns: 4,
             protectedTools: [...DEFAULT_PROTECTED_TOOLS],
         },
-        onIdle: {
-            enabled: false,
-            protectedTools: [...DEFAULT_PROTECTED_TOOLS],
-            showModelErrorToasts: true,
-            strictModelSelection: false,
-        },
     },
 }
 
@@ -587,18 +511,6 @@ function createDefaultConfig(): void {
       "turns": 4,
       // Additional tools to protect from pruning
       "protectedTools": []
-    },
-    // (Legacy) Run an LLM to analyze what tool calls are no longer relevant on idle
-    "onIdle": {
-      "enabled": false,
-      // Additional tools to protect from pruning
-      "protectedTools": [],
-      // Override model for analysis (format: "provider/model")
-      // "model": "anthropic/claude-haiku-4-5",
-      // Show toast notifications when model selection fails
-      "showModelErrorToasts": true,
-      // When true, fallback models are not permitted
-      "strictModelSelection": false
     }
   }
 }
@@ -660,20 +572,6 @@ function mergeStrategies(
                 ]),
             ],
         },
-        onIdle: {
-            enabled: override.onIdle?.enabled ?? base.onIdle.enabled,
-            model: override.onIdle?.model ?? base.onIdle.model,
-            showModelErrorToasts:
-                override.onIdle?.showModelErrorToasts ?? base.onIdle.showModelErrorToasts,
-            strictModelSelection:
-                override.onIdle?.strictModelSelection ?? base.onIdle.strictModelSelection,
-            protectedTools: [
-                ...new Set([
-                    ...base.onIdle.protectedTools,
-                    ...(override.onIdle?.protectedTools ?? []),
-                ]),
-            ],
-        },
     }
 }
 
@@ -728,10 +626,6 @@ function deepCloneConfig(config: PluginConfig): PluginConfig {
                 ...config.strategies.purgeErrors,
                 protectedTools: [...config.strategies.purgeErrors.protectedTools],
             },
-            onIdle: {
-                ...config.strategies.onIdle,
-                protectedTools: [...config.strategies.onIdle.protectedTools],
-            },
         },
     }
 }

diff --git a/lib/hooks.ts b/lib/hooks.ts
@@ -5,7 +5,6 @@ import { syncToolCache } from "./state/tool-cache"
 import { deduplicate, supersedeWrites, purgeErrors } from "./strategies"
 import { prune, insertPruneToolContext } from "./messages"
 import { checkSession } from "./state"
-import { runOnIdle } from "./strategies/on-idle"
 
 export function createChatMessageTransformHandler(
     client: any,
@@ -35,33 +34,3 @@ export function createChatMessageTransformHandler(
         }
     }
 }
-
-export function createEventHandler(
-    client: any,
-    config: PluginConfig,
-    state: SessionState,
-    logger: Logger,
-    workingDirectory?: string,
-) {
-    return async ({ event }: { event: any }) => {
-        if (state.sessionId === null || state.isSubAgent) {
-            return
-        }
-
-        if (event.type === "session.status" && event.properties.status.type === "idle") {
-            if (!config.strategies.onIdle.enabled) {
-                return
-            }
-            if (state.lastToolPrune) {
-                logger.info("Skipping OnIdle pruning - last tool was prune")
-                return
-            }
-
-            try {
-                await runOnIdle(client, state, logger, config, workingDirectory)
-            } catch (err: any) {
-                logger.error("OnIdle pruning failed", { error: err.message })
-            }
-        }
-    }
-}
diff --git a/lib/messages/inject.ts b/lib/messages/inject.ts
@@ -1,7 +1,7 @@
 import type { SessionState, WithParts } from "../state"
 import type { Logger } from "../logger"
 import type { PluginConfig } from "../config"
-import { loadPrompt } from "../prompt"
+import { loadPrompt } from "../prompts"
 import { extractParameterKey, buildToolIdList, createSyntheticUserMessage } from "./utils"
 import { getLastUserMessage } from "../shared-utils"