ring-vision-mcp

Server Quality Checklist

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Latest release: v1.0.0
Disambiguation5/5
Each tool targets a distinct concern: device discovery, status, capabilities, configurations, stream lifecycle, and event history. There is no meaningful overlap between tools, so an agent can reliably select the right one.
Naming Consistency5/5
All tools share a consistent ring_ prefix and follow a clear verb_noun structure such as list_devices, get_device_status, initiate_whep_stream. Naming conventions are uniform and predictable.
Tool Count5/5
Seven tools is well-scoped for a Ring-focused MCP server. Each tool addresses a distinct operational need without redundancy or bloat.
Completeness4/5
The surface covers device listing, status, capabilities, configurations, live streaming, and event history—the core Ring use cases. Minor gaps exist, such as the lack of configuration updates or recorded clip playback, but these do not break primary workflows.
Average 3.7/5 across 7 of 7 tools scored. Lowest: 2.9/5.
See the Tool Scores section below for per-tool breakdowns.
- No community issues in the last 6 months
- 7 commits in the last 12 weeks
- No stable releases found
- No critical vulnerability alerts
- No high-severity vulnerability alerts
- No code scanning findings
- CI status not available
This repository is licensed under MIT License.
This repository includes a README.md file.
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How is the quality score calculated?

The overall quality score combines two components: Tool Definition Quality (70%) and Server Coherence (30%).

Tool Definition Quality measures how well each tool describes itself to AI agents. Every tool is scored 1–5 across six dimensions: Purpose Clarity (25%), Usage Guidelines (20%), Behavioral Transparency (20%), Parameter Semantics (15%), Conciseness & Structure (10%), and Contextual Completeness (10%). The server-level definition quality score is calculated as 60% mean TDQS + 40% minimum TDQS, so a single poorly described tool pulls the score down.

Server Coherence evaluates how well the tools work together as a set, scoring four dimensions equally: Disambiguation (can agents tell tools apart?), Naming Consistency, Tool Count Appropriateness, and Completeness (are there gaps in the tool surface?).

Tiers are derived from the overall score: A (≥3.5), B (≥3.0), C (≥2.0), D (≥1.0), F (<1.0). B and above is considered passing.

Tool Scores

Behavior2/5
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden of behavioral disclosure. It states that a streaming session starts and that an SDP offer is exchanged, but it does not disclose whether the tool returns an SDP answer, whether the stream must later be terminated, or what side effects the live stream has on the camera.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Conciseness4/5
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is a single sentence with the core action front-loaded and no redundant filler. It loses a point because the 'or name' claim is unnecessary and inaccurate, and the sentence is slightly awkward in how it joins 'by ID or name' with 'exchanging a client SDP offer.'
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness2/5
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
This is a state-changing protocol tool with no output schema and no annotations, so the description should explain what the caller receives and what lifecycle obligations exist, such as receiving an SDP answer or terminating the stream later. Those details are absent, leaving the description incomplete for reliable invocation.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters2/5
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The input schema already fully documents both deviceId and sdpOffer, so the baseline is 3. However, the description's claim that the camera can be selected 'by ID or name' actively conflicts with the schema, which provides only deviceId and describes it as a unique device ID, potentially misleading an agent into passing a camera name.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose4/5
Does the description clearly state what the tool does and how it differs from similar tools?
The description names a specific action ('Start'), a concrete resource ('live WebRTC WHEP video streaming session with a Ring camera'), and the method (exchanging a client SDP offer), making it clearly distinct from list/status/termination siblings. It is not a perfect 5 because the phrase 'by ID or name' is unsupported by the schema, which only accepts deviceId.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Usage Guidelines3/5
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description implies this tool should be used when an agent needs to initiate a live WHEP stream and has a client SDP offer. It does not explicitly state prerequisites, such as obtaining the deviceId via ring_list_devices, nor does it point to ring_terminate_whep_stream as the way to stop the session.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Behavior3/5
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the behavioral disclosure burden. 'Inspect' strongly implies a read-only operation with no side effects, and the parenthetical clarifies what data will be surfaced. However, it does not disclose requirements such as device availability, permission needs, or error behavior when a device is not found.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Conciseness5/5
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is a single well-structured sentence with the action and resource front-loaded and the relevant capability details in a parenthetical. Every word contributes value, with no redundancy or filler.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness4/5
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a single-parameter, low-complexity inspection tool, the description is mostly complete: it identifies the resource, the action, and the returned information categories. Since there is no output schema, slightly more detail about the return shape or match behavior would improve completeness, but the current description is sufficient for a basic invocation.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters3/5
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The schema already provides 100% coverage for the single deviceId parameter, including the fact that it accepts an ID or name substring with examples. The tool description adds no additional parameter-level meaning, so the baseline of 3 is appropriate.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose5/5
Does the description clearly state what the tool does and how it differs from similar tools?
The description uses a specific verb ('Inspect') and a specific resource ('hardware capabilities for a Ring device'), then enumerates the exact capability categories it covers. This clearly distinguishes it from siblings like ring_get_device_status or ring_get_device_configurations, which address operational state and settings rather than hardware capabilities.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Usage Guidelines2/5
Does the description explain when to use this tool, when not to, or what alternatives exist?
There is no explicit guidance about when to use this tool versus the sibling tools. The description implies it should be used when hardware capabilities are needed, but it does not state when not to use it or mention any alternatives like status or configuration queries.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Behavior3/5
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are present, so the description carries the burden. The word 'Retrieve' implies a safe read operation, but the description does not disclose matching behavior when a name substring matches multiple devices, failure modes, or response format. It is not misleading, but it is thin on behavior beyond the obvious read-only nature.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Conciseness5/5
Is the description appropriately sized, front-loaded, and free of redundancy?
A single sentence front-loads the verb and the specific settings, with no filler or repetition. Every phrase contributes.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness4/5
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a one-parameter read-only getter, the description names exactly what data is returned and how to address the device. The only notable omission is response shape/return format, but an agent can invoke the tool correctly without it; the schema's 'name substring' hint partially covers matching semantics.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters3/5
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 100% and the deviceId schema already explains ID or name-substring semantics with examples. The tool description only repeats 'by ID or name' and adds no meaning beyond the schema.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose5/5
Does the description clearly state what the tool does and how it differs from similar tools?
States a specific verb ('Retrieve'), a concrete resource ('motion zones, privacy zones, and camera alert settings') and the lookup method ('by ID or name'). This content separates it from sibling tools that list devices, report status, or describe capabilities.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Usage Guidelines2/5
Does the description explain when to use this tool, when not to, or what alternatives exist?
No guidance on when to choose this tool over the listed siblings, and no exclusions or alternatives are mentioned. 'By ID or name' is about the parameter rather than tool selection.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Behavior2/5
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries the full burden of behavioral disclosure. 'Cleanly terminate' suggests graceful shutdown but does not specify what happens to the session, whether the operation is idempotent, whether the URL becomes invalid afterward, or what the device state is post-termination. For a destructive lifecycle operation, this is a meaningful gap.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Conciseness5/5
Is the description appropriately sized, front-loaded, and free of redundancy?
A single sentence of 16 words that names the action, target, and mechanism with no filler. All information is front-loaded and every word contributes meaning.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness3/5
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
The tool is simple (one required parameter, no output schema, no nested objects), so verbosity is not required. However, because there is no output schema or annotations, the description should have disclosed the result of a successful termination and any error/idempotency behavior. The absence of those details leaves the agent unsure what to expect after invocation.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters3/5
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 100%, and the schema's parameter description already explains that sessionUrl is the URL returned by ring_initiate_whep_stream. The tool description reiterates the same concept ('session control URL') without adding format, validation, or lifecycle details. Baseline 3 is appropriate since the schema does the heavy lifting.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose5/5
Does the description clearly state what the tool does and how it differs from similar tools?
The description uses a specific verb ('terminate') with a clear resource ('active WebRTC WHEP live streaming session') and the mechanism ('session control URL'). This unambiguously distinguishes it from siblings like ring_initiate_whep_stream (creation) and ring_list_devices/ring_get_device_status (read operations).
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Usage Guidelines4/5
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description implies the usage context: the tool operates on a session that must already be active and references the session control URL obtained from ring_initiate_whep_stream, creating an implicit start/stop pairing. It does not explicitly state when not to use it or name alternatives, but with naming siblings all being read/initiate operations, the intended call path is clear.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Behavior2/5
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries the full burden of behavioral disclosure. It discloses output scope but not behavioral traits such as the default inclusion of offline devices — and it is ambiguous: it says 'connected' devices, yet the includeOffline parameter defaults to true, meaning offline devices are returned by default. No mention of rate limits, auth, or side effects.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Conciseness5/5
Is the description appropriately sized, front-loaded, and free of redundancy?
A single sentence with a front-loaded verb and no filler. Every word contributes meaning, and it is appropriately sized for a simple list tool.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness4/5
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a one-parameter tool with no output schema, the description adequately conveys what the agent will get back: online status and hardware capabilities. The main gap is the 'connected' vs. includeOffline-default ambiguity, which the schema resolves. An agent could call this tool correctly with the information provided.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters3/5
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The sole parameter, includeOffline, is fully documented in the schema with its default value and meaning (100% schema description coverage). The description adds only weak context by mentioning 'online status' as output, which loosely relates to the filter. Schema does the heavy lifting, so the baseline 3 applies.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose5/5
Does the description clearly state what the tool does and how it differs from similar tools?
Description uses a specific verb ('List') with a clear resource ('all connected Ring cameras and doorbells') and states the returned content ('online status and hardware capabilities'). The 'all' scope distinguishes it from single-device siblings like ring_get_device_status and ring_get_device_capabilities.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Usage Guidelines4/5
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description makes the intended use apparent: use it to get an inventory of all devices, rather than querying a single device's status or capabilities like the get_* siblings. It provides clear context but does not explicitly name when-not-to-use or list alternative tools.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Behavior4/5
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the behavioral disclosure burden. It clearly indicates a read-only operation ('Retrieve') and specifies that the data is real-time, which informs the agent that live device data will be fetched. The lack of explicit side-effect disclosure is acceptable because the act of retrieving status inherently signals a non-mutating operation.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Conciseness5/5
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is a single, direct sentence that front-loads the primary action and resource. Every element is informative, with no filler or repetition of schema details.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness4/5
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a simple one-parameter getter with no output schema, the description is largely complete: it names the action, the target, the key return fields, and the accepted lookup method (ID or name). It does not mention error conditions or what happens when the device is not found, but given the low complexity and the schema's coverage of the parameter, this is a minor gap.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters3/5
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The input schema already documents the sole parameter fully, including its type, requirement, minLength, and examples of accepted name substrings. The description adds 'by ID or name' context, but this is already covered by the schema description. With 100% schema coverage, the baseline of 3 is appropriate.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose5/5
Does the description clearly state what the tool does and how it differs from similar tools?
The description states a specific verb ('Retrieve') with a clear resource ('Ring device status') and lists the exact data points returned (battery, Wi-Fi RSSI, firmware version). It differentiates from sibling tools by focusing on device status rather than list, capabilities, configurations, streaming, or event history.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Usage Guidelines3/5
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description makes it clear this is for retrieving real-time status data from a device, which implies the context for use. However, it does not explicitly state when to use this tool versus alternatives such as ring_list_devices (for finding device IDs) or ring_get_device_capabilities (for feature capabilities). No exclusions or alternative conditions are provided.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Behavior3/5
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the burden of behavioral disclosure. It conveys a read-only operation ('Retrieve') and explains the two modes, but it does not mention potential rate limits, the definition of 'recent', or that no events will be deleted. There is no contradiction, but richer behavioral context would be helpful.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Conciseness5/5
Is the description appropriately sized, front-loaded, and free of redundancy?
Two concise sentences front-load the main action and examples, and the second sentence clarifies the targeting modes. Every word earns its place without redundancy.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness4/5
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a simple retrieval tool with two optional parameters, the description covers the key usage modes. It lacks an output schema and annotations, but the description sufficiently explains what the tool does and how to choose between device-specific and aggregate queries.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters4/5
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 100%, so the baseline is 3. The description adds meaning by explaining the semantics of omitting deviceId (aggregates across all devices) and that deviceId can be a name in addition to an ID, going beyond the schema's bare parameter descriptions.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose5/5
Does the description clearly state what the tool does and how it differs from similar tools?
The description uses a specific verb ('Retrieve') and clearly identifies the resource ('recorded historical events') with concrete examples (motion alerts, doorbell presses, live views). It distinguishes itself from sibling tools that list devices, get statuses, or manage streams, leaving no ambiguity about its function.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Usage Guidelines4/5
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description provides clear context for how to use the tool: target a specific device by ID/name or aggregate across all devices. It implies when this is useful, though it does not explicitly state exclusions or alternatives, which are not needed given the distinct sibling names.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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