Start voice calls via the OpenClaw voice-call plugin.
70
56%
Does it follow best practices?
Impact
100%
1.17xAverage score across 3 eval scenarios
Passed
No known issues
Optimize this skill with Tessl
npx tessl skill review --optimize ./skills/voice-call/SKILL.mdQuality
Discovery
40%Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.
The description is very brief and identifies a narrow, distinct capability (starting voice calls via a specific plugin), which helps with distinctiveness. However, it lacks a 'Use when...' clause, covers only a single action, and misses common trigger term variations that users might naturally use when requesting voice call functionality.
Suggestions
Add a 'Use when...' clause with explicit triggers, e.g., 'Use when the user wants to make a phone call, dial a number, or initiate a voice conversation.'
Include common natural language variations as trigger terms: 'phone call', 'dial', 'ring', 'call someone', 'make a call', 'voice chat'.
Expand the capability description to cover additional actions if applicable, such as managing call settings, ending calls, or transferring calls.
| Dimension | Reasoning | Score |
|---|---|---|
Specificity | Names the domain (voice calls) and one action (start), but only describes a single action. It mentions the specific plugin name 'OpenClaw voice-call plugin' which adds some specificity, but lacks detail on what starting a call entails or additional capabilities. | 2 / 3 |
Completeness | It answers 'what' (start voice calls) but has no explicit 'when' clause or trigger guidance. Per the rubric, a missing 'Use when...' clause caps completeness at 2, and the 'what' is also minimal, so this scores a 1. | 1 / 3 |
Trigger Term Quality | Includes 'voice calls' which is a natural term users might say, and 'OpenClaw' for users who know the plugin. However, it misses common variations like 'phone call', 'dial', 'ring', 'call someone', or 'make a call'. | 2 / 3 |
Distinctiveness Conflict Risk | The combination of 'voice calls' and the specific 'OpenClaw voice-call plugin' name creates a clear niche that is unlikely to conflict with other skills. Voice calling is a distinct domain. | 3 / 3 |
Total | 8 / 12 Passed |
Implementation
72%Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.
This is a concise, well-structured skill that efficiently communicates the voice-call plugin's interface. Its main weakness is the lack of concrete tool invocation examples and an explicit call lifecycle workflow. The provider configuration notes are a useful addition that avoids over-explanation.
Suggestions
Add a concrete tool invocation example showing the full call to `voice_call` with `initiate_call` action including example parameters and expected response shape.
Add an explicit workflow sequence for the call lifecycle (e.g., 1. initiate_call → 2. get_status to confirm connected → 3. speak_to_user/continue_call → 4. end_call) to clarify the expected multi-step process.
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | Every line serves a purpose—CLI examples, tool actions with parameters, and provider config are all essential information Claude wouldn't inherently know. No unnecessary explanations of what voice calls are or how Twilio works. | 3 / 3 |
Actionability | CLI commands are concrete and copy-paste ready, but the tool actions list only parameter names without showing actual tool invocation syntax or example payloads. A concrete example of calling `voice_call` with `initiate_call` action would make this fully actionable. | 2 / 3 |
Workflow Clarity | The actions imply a workflow (initiate → continue/speak → end), but the sequence is not explicitly stated. For a multi-step process like managing a voice call lifecycle, an explicit sequence with validation (e.g., check status after initiation) would improve clarity. | 2 / 3 |
Progressive Disclosure | For a simple, focused skill under 50 lines, the content is well-organized into clear sections (CLI, Tool, Notes) with no unnecessary nesting or monolithic blocks. No external references are needed given the scope. | 3 / 3 |
Total | 10 / 12 Passed |
Validation
81%Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.
Validation — 9 / 11 Passed
Validation for skill structure
| Criteria | Description | Result |
|---|---|---|
metadata_version | 'metadata.version' is missing | Warning |
metadata_field | 'metadata' should map string keys to string values | Warning |
Total | 9 / 11 Passed | |
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