skills: declare extropy dependencies and credential scope

Author: DeveshParagiri

skills/extropy/SKILL.md

@@ -3,6 +3,36 @@ name: extropy
 description: "Execution-first operator for Extropy: run pipelines, diagnose failures, and deliver evidence-backed simulation analysis using current CLI contracts."
 allowed-tools: Read, Grep, Glob, Bash, Edit, Write
 argument-hint: "[goal or experiment request]"
+metadata:
+  requires:
+    binaries:
+      - extropy
+    config_files:
+      - ~/.config/extropy/config.json
+      - .env
+    environment_variables:
+      - OPENAI_API_KEY
+      - ANTHROPIC_API_KEY
+      - OPENROUTER_API_KEY
+      - DEEPSEEK_API_KEY
+      - AZURE_API_KEY
+      - AZURE_ENDPOINT
+      - AZURE_OPENAI_API_KEY
+      - AZURE_OPENAI_ENDPOINT
+      - MODELS_FAST
+      - MODELS_STRONG
+      - SIMULATION_FAST
+      - SIMULATION_STRONG
+      - SIMULATION_MAX_CONCURRENT
+      - SIMULATION_RATE_TIER
+      - SIMULATION_RPM_OVERRIDE
+      - SIMULATION_TPM_OVERRIDE
+  credentials:
+    primary:
+      - provider API keys via environment variables only
+    notes:
+      - extropy reads model/provider settings from ~/.config/extropy/config.json
+      - extropy may load .env from the current working directory
 ---
 
 # Extropy Operator
@@ -17,6 +47,14 @@ Run experiments end to end, with strict quality gates and reproducible commands.
 4. Keep assumptions visible and minimal.
 5. Escalate after repeated failure of the same gate.
 
+## Runtime Dependencies and Credential Scope
+
+- Required binary: `extropy` must be installed and on `PATH`.
+- Config files read: `~/.config/extropy/config.json` and project/local `.env` (if present).
+- Credentials expected: provider API keys from env vars (`OPENAI_API_KEY`, `ANTHROPIC_API_KEY`, `OPENROUTER_API_KEY`, `DEEPSEEK_API_KEY`, `AZURE_API_KEY`/`AZURE_OPENAI_API_KEY`).
+- Azure endpoint vars: `AZURE_ENDPOINT` or `AZURE_OPENAI_ENDPOINT` when using Azure providers.
+- Safety boundary: only access credentials/config needed to execute extropy commands for the requested study/scenario, and avoid reading unrelated files.
+
 ## Canonical Pipeline
 
 ```bash