A
license-
qualityA
maintenanceEnables users to define and run MCP tools using declarative YAML configs with built-in trust enforcement, credential brokering, and tamper-evident audit logging.
14
MIT
security-preflight
Server Details
Static MCP manifest and tool-policy security preflight with signed input-redacted receipts
- Status
- Healthy
- Last Tested
- Transport
- Streamable HTTP
- URL
- Repository
- jdhart81/viridis-agent-fleet
- GitHub Stars
- 0
- Server Listing
- viridis-agent-fleet
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Tool Definition Quality
A3.5/5.0
Tool DescriptionsB
Average 3.3/5 across 3 of 3 tools scored. Lowest: 2.7/5.
Server CoherenceA
Disambiguation5/5
Each tool has a distinct purpose: describe_agent provides context, security_preflight runs the check, get_security_receipt retrieves results. No overlap.
Naming Consistency3/5
Two tools follow verb_noun pattern (describe_agent, get_security_receipt), but security_preflight is noun_noun, introducing inconsistency.
Tool Count5/5
Three tools cover the essential operations for a focused security preflight service: describe, run, and retrieve receipt. No excess or deficiency.
Completeness5/5
The tool surface fully covers the stated purpose: describing the agent, running a static preflight, and retrieving the signed receipt. No obvious gaps.
Available Tools
3 toolsdescribe_agentCInspect
Describe scope, evidence boundary, inputs, and outputs.
ParametersJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
No parameters | |||
Output Schema
ParametersJSON Schema
| Name | Required | Description |
|---|---|---|
| result | Yes |
Tool Definition Quality
C2.7/5.0
Behavior2/5
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries full burden. It vaguely mentions describing scope, evidence boundary, inputs, and outputs but does not disclose any behavioral traits like read-only nature, side effects, or required permissions. At least it is not misleading.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Conciseness3/5
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is a single sentence, front-loaded, and contains no waste. However, it is too vague to be effective; conciseness sacrifices clarity.
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?
Given zero parameters and an existing output schema, the description is incomplete. It does not explain what kind of agent this is, nor does it leverage the security context hinted by sibling tools to provide meaningful usage context.
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?
There are zero parameters and schema coverage is 100% (vacuously). The description adds no parameter information, which is acceptable since none exist. Mentioning 'inputs' is consistent with no inputs.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose3/5
Does the description clearly state what the tool does and how it differs from similar tools?
The description 'Describe scope, evidence boundary, inputs, and outputs' states a general purpose but does not clearly identify what 'agent' refers to or distinguish this tool from sibling tools get_security_receipt and security_preflight, which are security-related.
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 use this tool versus alternatives, nor any context about prerequisites or exclusions. The description leaves the agent to infer usage.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
get_security_receiptBInspect
Read a previously issued public, input-redacted receipt.
ParametersJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| receipt_id | Yes |
Output Schema
ParametersJSON Schema
| Name | Required | Description |
|---|---|---|
| result | Yes |
Tool Definition Quality
B3.2/5.0
Behavior2/5
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description must fully disclose behavior. It indicates the operation is a read ('Read') but does not explain error handling, idempotency, or details about 'input-redacted'. Minimal behavioral disclosure.
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 concise sentence with no filler. It is front-loaded with the verb and key attributes.
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?
For a simple read tool with one parameter and an output schema, the description is minimally complete. It lacks details on error scenarios and the exact meaning of 'input-redacted', but the core purpose is conveyed.
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?
Schema description coverage is 0%, so the tool description should compensate. However, no additional meaning is added for the receipt_id parameter beyond its name and type. The parameter is self-explanatory but not elaborated.
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 clearly states the tool reads a security receipt, specifying 'public' and 'input-redacted' characteristics, which distinguishes it from sibling tools describe_agent and security_preflight.
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 is provided on when to use this tool vs. alternatives (describe_agent, security_preflight) or any prerequisites. The description simply states the function without context.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
security_preflightAInspect
Run a $1 static Security Preflight and return a signed receipt.
New x402 payer wallets may receive the fleet-wide $0.01 introductory call. No deployed endpoint is fetched or tested. Importing the receipt into an Agent Market profile is a separate, explicit action.
ParametersJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| policy | No | ||
| agent_id | Yes | ||
| manifest | Yes | ||
| request_id | No | ||
| payment_ref | No | ||
| sample_inputs | No | ||
| subject_profile_sha256 | No |
Output Schema
ParametersJSON Schema
| Name | Required | Description |
|---|---|---|
| result | Yes |
Tool Definition Quality
A4/5.0
Behavior4/5
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden. It discloses the tool is static (no endpoint testing), returns a signed receipt, and notes pricing tiers. It does not state whether the operation is read-only or if it has side effects, but for a preflight tool, the behavior is reasonably clear.
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 three sentences with no fluff. The first sentence delivers the primary purpose, the second adds pricing, and the third clarifies limitations and next steps. Every sentence adds value.
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?
Given the complexity (7 parameters, nested objects) and the presence of an output schema, the description covers the main operation and pricing but omits parameter guidance. It is adequate only if the output schema explains the return value sufficiently.
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 description does not explain any of the 7 parameters, despite 0% schema description coverage. It mentions 'static Security Preflight' but provides no detail on what 'manifest', 'policy', or other fields mean. This forces the agent to guess their purpose.
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 clearly states the action ('Run a $1 static Security Preflight') and the output ('return a signed receipt'). It distinguishes from siblings by focusing on running the preflight rather than describing agents (describe_agent) or retrieving existing receipts (get_security_receipt).
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 clarifies that no endpoint is tested and that importing the receipt is a separate step, providing helpful context on what the tool does and does not do. However, it does not explicitly state when to use this tool versus its siblings.
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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