> **configs-targeting** — chapter 16 of 50 in [launchdarkly/ai-tooling](https://skillsdocs.com/launchdarkly/ai-tooling). > > Book (all chapters, one file): https://skillsdocs.com/launchdarkly/ai-tooling.md > Machine manifest: https://skillsdocs.com/launchdarkly/ai-tooling/.well-known/agent-skills/index.json > Install the book: `npx skills add launchdarkly/ai-tooling` > Upstream: https://github.com/launchdarkly/ai-tooling/blob/main/skills/agentcontrol/configs-targeting/SKILL.md @ `main` > Raw bytes, no header: https://raw.githubusercontent.com/launchdarkly/ai-tooling/main/skills/agentcontrol/configs-targeting/SKILL.md > Base for relative paths: https://raw.githubusercontent.com/launchdarkly/ai-tooling/main/skills/agentcontrol/configs-targeting/ > Licence: Other — https://github.com/launchdarkly/ai-tooling > > Bundled files (1), referenced from this skill's directory: > - `README.md` — https://raw.githubusercontent.com/launchdarkly/ai-tooling/main/skills/agentcontrol/configs-targeting/README.md > > Content © its authors, served unmodified. Takedown: https://github.com/DreambaseAI/skillsdocs/issues/new?labels=takedown&title=Takedown+request --- name: configs-targeting description: Configure config targeting rules to control which variations serve to different users. Enable percentage rollouts, attribute-based rules, segment targeting, and guarded rollouts. compatibility: Requires LaunchDarkly API access token with ai-configs:write permission. metadata: author: launchdarkly version: "0.1.0" --- # Config Targeting Configure targeting rules for configs to control which variations serve to different contexts. Works the same for both completion and agent mode. ## Prerequisites - LaunchDarkly account with AgentControl enabled - API access token with write permissions - Project key and environment key - Existing config with variations (use `configs-create` skill) ## API Key Detection 1. **Check environment variables** - `LAUNCHDARKLY_API_KEY`, `LAUNCHDARKLY_API_TOKEN`, `LD_API_KEY` 2. **Check MCP config** - Claude: `~/.claude/config.json` -> `mcpServers.launchdarkly.env.LAUNCHDARKLY_API_KEY` 3. **Prompt user** - Only if detection fails ## Core Concepts ### Evaluation Order Targeting rules evaluate in this order (same as feature flags): 1. **Individual targets** - Specific context keys (highest priority) 2. **Segment rules** - Pre-defined segments 3. **Custom rules** - Attribute-based conditions (evaluated in order) 4. **Default rule** - Fallthrough for all others 5. **Off variation** - When targeting is disabled ### Semantic Patch API config targeting uses semantic patch instructions: ``` PATCH /api/v2/projects/{projectKey}/ai-configs/{configKey}/targeting Content-Type: application/json; domain-model=launchdarkly.semanticpatch ``` ### Key Concepts - **variationId**: UUIDs, not keys. Always fetch targeting first to get IDs. - **Weights**: Thousandths (50000 = 50%, 100000 = 100%) - **Clause logic**: Multiple clauses = AND, multiple values = OR - **Null attributes**: Rules with null/missing attributes are skipped ## Workflow ### Step 1: Get Targeting (with Variation IDs) ```bash curl -X GET "https://app.launchdarkly.com/api/v2/projects/{projectKey}/ai-configs/{configKey}/targeting" \ -H "Authorization: {api_token}" \ -H "LD-API-Version: beta" ``` Response includes `variations` array with `_id` (UUID) for each variation. ### Step 2: Edit the Default Rule Edit the default rule to serve the variation you created. > **Important:** The `turnTargetingOn` instruction does not work for configs. Use `updateFallthroughVariationOrRollout` instead. ```bash # First, get variation IDs from Step 1 response # Then set fallthrough to the enabled variation (e.g., "Default" variation) curl -X PATCH "https://app.launchdarkly.com/api/v2/projects/{projectKey}/ai-configs/{configKey}/targeting" \ -H "Authorization: {api_token}" \ -H "Content-Type: application/json; domain-model=launchdarkly.semanticpatch" \ -H "LD-API-Version: beta" \ -d '{ "environmentKey": "production", "instructions": [{ "kind": "updateFallthroughVariationOrRollout", "variationId": "your-enabled-variation-uuid" }] }' ``` ### Step 3: Add Targeting Rules **Attribute-based rule:** ```bash curl -X PATCH "https://app.launchdarkly.com/api/v2/projects/{projectKey}/ai-configs/{configKey}/targeting" \ -H "Authorization: {api_token}" \ -H "Content-Type: application/json; domain-model=launchdarkly.semanticpatch" \ -H "LD-API-Version: beta" \ -d '{ "environmentKey": "production", "instructions": [{ "kind": "addRule", "clauses": [{ "contextKind": "user", "attribute": "selectedModel", "op": "contains", "values": ["sonnet"], "negate": false }], "variation": 0 }] }' ``` **Percentage rollout:** ```bash curl -X PATCH "..." \ -d '{ "environmentKey": "production", "instructions": [{ "kind": "addRule", "clauses": [{ "contextKind": "user", "attribute": "tier", "op": "in", "values": ["premium"], "negate": false }], "percentageRolloutConfig": { "contextKind": "user", "bucketBy": "key", "variations": [ {"variation": 0, "weight": 60000}, {"variation": 1, "weight": 40000} ] } }] }' ``` **Set fallthrough (default rule):** ```bash curl -X PATCH "..." \ -d '{ "environmentKey": "production", "instructions": [{ "kind": "updateFallthroughVariationOrRollout", "variationId": "fallback-variation-uuid" }] }' ``` ## Python Implementation ```python import requests import os from typing import Dict, List, Optional class AIConfigTargeting: """Manager for config targeting rules""" def __init__(self, api_token: str, project_key: str): self.api_token = api_token self.project_key = project_key self.base_url = "https://app.launchdarkly.com/api/v2" def get_targeting(self, config_key: str) -> Optional[Dict]: """Get current targeting with variation IDs.""" url = f"{self.base_url}/projects/{self.project_key}/ai-configs/{config_key}/targeting" response = requests.get(url, headers={ "Authorization": self.api_token, "LD-API-Version": "beta" }) if response.status_code == 200: return response.json() print(f"[ERROR] {response.status_code}: {response.text}") return None def get_variation_id(self, config_key: str, variation_key: str) -> Optional[str]: """Look up variation UUID from key or name.""" targeting = self.get_targeting(config_key) if targeting: for var in targeting.get("variations", []): if var.get("key") == variation_key or var.get("name") == variation_key: return var.get("_id") return None def update_targeting(self, config_key: str, environment: str, instructions: List[Dict], comment: str = "") -> Optional[Dict]: """Send semantic patch instructions.""" url = f"{self.base_url}/projects/{self.project_key}/ai-configs/{config_key}/targeting" payload = {"environmentKey": environment, "instructions": instructions} if comment: payload["comment"] = comment response = requests.patch(url, headers={ "Authorization": self.api_token, "Content-Type": "application/json; domain-model=launchdarkly.semanticpatch", "LD-API-Version": "beta" }, json=payload) if response.status_code == 200: return response.json() print(f"[ERROR] {response.status_code}: {response.text}") return None def enable_config(self, config_key: str, environment: str, variation_key: str = "default") -> bool: """ Enable a config by setting fallthrough to an enabled variation. Note: turnTargetingOn doesn't work for configs. Instead, set the fallthrough from the disabled variation (index 0) to an enabled one. """ variation_id = self.get_variation_id(config_key, variation_key) if not variation_id: print(f"[ERROR] Variation '{variation_key}' not found") return False return self.set_fallthrough(config_key, environment, variation_id) def add_rule(self, config_key: str, environment: str, clauses: List[Dict], variation: int, description: str = "") -> bool: """Add targeting rule serving a specific variation index.""" instruction = { "kind": "addRule", "clauses": clauses, "variation": variation } if description: instruction["description"] = description result = self.update_targeting(config_key, environment, [instruction], f"Add rule: {description}") if result: print(f"[OK] Rule added") return True return False def add_rollout_rule(self, config_key: str, environment: str, clauses: List[Dict], weights: List[Dict], bucket_by: str = "key") -> bool: """ Add percentage rollout rule. weights: [{"variation": 0, "weight": 50000}, {"variation": 1, "weight": 50000}] """ result = self.update_targeting(config_key, environment, [{ "kind": "addRule", "clauses": clauses, "percentageRolloutConfig": { "contextKind": "user", "bucketBy": bucket_by, "variations": weights } }], "Add percentage rollout") if result: print(f"[OK] Rollout rule added") return True return False def set_fallthrough(self, config_key: str, environment: str, variation_id: str) -> bool: """Set default (fallthrough) variation by UUID.""" result = self.update_targeting(config_key, environment, [{ "kind": "updateFallthroughVariationOrRollout", "variationId": variation_id }], "Set fallthrough") if result: print(f"[OK] Fallthrough set") return True return False def target_individuals(self, config_key: str, environment: str, context_keys: List[str], variation: int, context_kind: str = "user") -> bool: """Target specific context keys.""" result = self.update_targeting(config_key, environment, [{ "kind": "addTargets", "variation": variation, "contextKind": context_kind, "values": context_keys }], f"Target {len(context_keys)} individuals") if result: print(f"[OK] Individual targets added") return True return False def target_segment(self, config_key: str, environment: str, segment_keys: List[str], variation: int) -> bool: """Target a segment.""" result = self.update_targeting(config_key, environment, [{ "kind": "addRule", "clauses": [{ "attribute": "segmentMatch", "contextKind": "", # Leave blank for segments "op": "segmentMatch", "values": segment_keys, "negate": False }], "variation": variation }], f"Target segments: {segment_keys}") if result: print(f"[OK] Segment targeting added") return True return False def clear_rules(self, config_key: str, environment: str) -> bool: """Remove all targeting rules.""" result = self.update_targeting(config_key, environment, [{"kind": "replaceRules", "rules": []}], "Clear all rules") if result: print(f"[OK] All rules cleared") return True return False ``` ## Instruction Reference > **Note:** `turnTargetingOn` and `turnTargetingOff` do not work for configs. Configs have targeting enabled by default. To "enable" a config, set the fallthrough to an enabled variation using `updateFallthroughVariationOrRollout`. ### Rules | Kind | Description | |------|-------------| | `addRule` | Add rule with clauses and variation/rollout | | `removeRule` | Remove by ruleId | | `replaceRules` | Replace all rules | | `reorderRules` | Change evaluation order | | `updateRuleVariationOrRollout` | Update what a rule serves | ### Fallthrough | Kind | Description | |------|-------------| | `updateFallthroughVariationOrRollout` | Set default variation or rollout | ### Individual Targets | Kind | Description | |------|-------------| | `addTargets` | Target specific context keys | | `removeTargets` | Remove specific targets | | `replaceTargets` | Replace all targets | ## Operators Reference | Operator | Description | Example | |----------|-------------|---------| | `in` | Value in list | `["premium", "enterprise"]` | | `contains` | String contains | `["sonnet"]` | | `startsWith` | String prefix | `["user-"]` | | `endsWith` | String suffix | `[".edu"]` | | `matches` | Regex match | `["^user-\\d+$"]` | | `greaterThan` / `lessThan` | Numeric comparison | `[100]` | | `before` / `after` | Date comparison | `["2024-12-31T00:00:00Z"]` | | `semVerEqual` / `semVerGreaterThan` | Version comparison | `["2.0.0"]` | | `segmentMatch` | Segment membership | `["beta-testers"]` | ## Clause Structure ```json { "contextKind": "user", "attribute": "email", "op": "endsWith", "values": [".edu"], "negate": false } ``` - Multiple clauses = AND (all must match) - Multiple values = OR (any can match) - `negate: true` inverts the operator ## Rollout Types ### Manual Percentage Rollout ```json { "percentageRolloutConfig": { "contextKind": "user", "bucketBy": "key", "variations": [ {"variation": 0, "weight": 50000}, {"variation": 1, "weight": 50000} ] } } ``` ### Progressive Rollout ```json { "progressiveRolloutConfig": { "contextKind": "user", "controlVariation": 1, "endVariation": 0, "steps": [ {"rolloutWeight": 1000, "duration": {"quantity": 4, "unit": "hour"}}, {"rolloutWeight": 5000, "duration": {"quantity": 4, "unit": "hour"}}, {"rolloutWeight": 10000, "duration": {"quantity": 4, "unit": "hour"}} ] } } ``` ### Guarded Rollout ```json { "guardedRolloutConfig": { "randomizationUnit": "user", "stages": [ {"rolloutWeight": 1000, "monitoringWindowMilliseconds": 17280000}, {"rolloutWeight": 5000, "monitoringWindowMilliseconds": 17280000} ], "metrics": [{ "metricKey": "error-rate", "onRegression": {"rollback": true}, "regressionThreshold": 0.01 }] } } ``` ## Common Patterns ### Model Routing by Attribute ```python # Route based on selectedModel context attribute targeting.add_rule( config_key="model-selector", environment="production", clauses=[{ "contextKind": "user", "attribute": "selectedModel", "op": "contains", "values": ["sonnet"], "negate": False }], variation=0, # Sonnet variation index description="Route sonnet requests" ) ``` ### Tier-Based Variation ```python targeting.add_rule( config_key="chat-assistant", environment="production", clauses=[{ "contextKind": "user", "attribute": "tier", "op": "in", "values": ["premium", "enterprise"], "negate": False }], variation=0 # Premium model variation ) ``` ### Segment Targeting ```python targeting.target_segment( config_key="chat-assistant", environment="production", segment_keys=["beta-testers"], variation=1 # Experimental variation ) ``` ## Error Handling | Status | Cause | Solution | |--------|-------|----------| | 400 | Invalid semantic patch | Check instruction format, ops must be lowercase | | 403 | Insufficient permissions | Check API token | | 404 | Config not found | Verify projectKey and configKey | | 422 | Invalid variation | Use index (0, 1, 2...) or UUID from targeting response | ## Next Steps After configuring targeting: 1. **Provide config URL:** ``` https://app.launchdarkly.com/projects/{projectKey}/ai-configs/{configKey} ``` 2. **Monitor performance** with `built-in-metrics` 3. **Attach judges** with `online-evals` 4. **Set up guarded rollouts** for automatic regression detection ## Related Skills - `configs-create` - Create configs with variations - `configs-variations` - Manage variations - `online-evals` - Attach judges - `segments` - Create segments for targeting ## Other Resources - [Target with AgentControl](https://docs.launchdarkly.com/home/ai-configs/target.md) - [Targeting Rules](https://docs.launchdarkly.com/home/flags/target-rules.md) - [JSON Targeting](https://docs.launchdarkly.com/home/flags/json-targeting.md) - [Guarded Rollouts](https://docs.launchdarkly.com/home/releases/guarded-rollouts.md)