| name | gemini-extensions |
| description | Use Gemini Extensions to connect models to Google services and external tools. |
| allowed-tools | Read, Write, Edit, Bash, Glob, Grep, Task, TodoWrite |
| model | sonnet |
| x-version | 3.2.0 |
| x-category | platforms |
| x-vcl-compliance | v3.1.1 |
| x-cognitive-frames | HON, MOR, COM, CLS, EVD, ASP, SPC |
Purpose
Plan and execute Gemini Extension calls with consent, scoping, and auditability.
Trigger Conditions
- Use this skill when: Need Gemini to interact with Drive, Gmail, Calendar, or third-party tools via extensions.
- Reroute when: If doing pure text/chat without tools, standard Gemini usage suffices.
Guardrails (Inherited from Skill-Forge + Prompt-Architect)
- Structure-first: every platform skill keeps
SKILL.md,examples/, andtests/populated; createresources/andreferences/as needed. Log any missing artifact and fill a placeholder before proceeding. - Confidence ceilings are mandatory in outputs: inference/report 0.70, research 0.85, observation/definition 0.95. State as
Confidence: X.XX (ceiling: TYPE Y.YY). - English-only user-facing text; keep VCL markers internal. Do not leak internal notation.
- Adversarial validation is required before sign-off: boundary, failure, and COV checks with notes.
- MCP tagging for runs:
WHO=gemini-extensions-{session},WHY=skill-execution, namespaceskills/platforms/gemini-extensions/{project}.
Execution Framework
- Intent & Constraints — clarify task goal, inputs, success criteria, and risk limits; extract hard/soft/inferred constraints explicitly.
- Plan & Docs — outline steps, needed examples/tests, and data contracts; confirm platform-specific policies.
- Build & Optimize — apply platform playbook below; keep iterative checkpoints and diffs.
- Validate — run adversarial tests, measure KPIs, and record evidence with ceilings.
- Deliver & Hand off — summarize decisions, artifacts, and next actions; capture learnings for reuse.
Platform Playbook
- Workflow patterns:
- Map user intent to required extensions and scopes
- Design consent + audit prompts before execution
- Validate outputs and redact sensitive data before returning
- Anti-patterns to avoid: Requesting broad scopes unnecessarily, Skipping consent before tool execution, Returning raw extension payloads without filtering
- Example executions:
- Draft emails via Gmail Extension with explicit approval
- Summarize Drive docs using Drive + Vertex search combo
Documentation & Artifacts
SKILL.md(this file) is canonical; keep quick-reference notes inREADME.mdif present.examples/should hold runnable or narrative examples;tests/should include validation steps or checklists.resources/stores helper scripts/templates;references/stores background links or research.- Update
metadata.jsonversion if behavior meaningfully changes.
Verification Checklist
- Trigger matched and reroute considered
- Examples/tests present or stubbed with TODOs
- Constraints captured and confidence ceiling stated
- Validation evidence captured (boundary, failure, COV)
- MCP tags applied for this run
Confidence: 0.70 (ceiling: inference 0.70) - Standardized platform skill rewrite aligned with skill-forge + prompt-architect guardrails.