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vulnforge_audit_microsegmentation

Audits distributed eBPF microsegmentation policies (CiliumNetworkPolicy, Kubernetes NetworkPolicy), verifies Zero-Trust default-deny postures, cloud metadata egress restrictions (169.254.169.254/32), L7 protocol visibility, and…

Instructions

Audits distributed eBPF microsegmentation policies (CiliumNetworkPolicy, Kubernetes NetworkPolicy), verifies Zero-Trust default-deny postures, cloud metadata egress restrictions (169.254.169.254/32), L7 protocol visibility, and auto-synthesizes hardened policies from live kernel flow telemetry.

Input Schema

NameRequiredDescriptionDefault
formatNoFormat override (auto-detected if omitted)
contentNoRaw NetworkPolicy YAML, CiliumNetworkPolicy YAML, or JSON policy content
filePathNoPolicy file path or manifest name (optional)
flowEventsNoLive kernel flow events array or JSONL string to analyze and synthesize policies against (optional)
enforceDefaultDenyNoRequire default-deny baseline for all unclassified traffic (default: true)
enforceZeroTrustIngressNoFlag wildcard ingress and require strict matchLabels endpoint selection (default: true)
enforceMetadataEgressBlockNoBlock cloud provider instance metadata endpoint 169.254.169.254/32 in egress (default: true)

Schema Changelog

Changes observed during successful MCP inspections.

  1. Addedv1.19.0

TDQS

B3.2/5.0
Behavior3/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations present, the description must carry the full behavioral load. It does disclose the checks performed (default-deny, metadata egress, L7 visibility) and that it synthesizes hardened policies from flow telemetry, which is meaningful context. However, it never clarifies whether the tool is read-only or writes/injects policies, nor what 'Require' vs 'Flag' actually does (hard-fail vs report), leaving mutation semantics ambiguous.

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?

A single dense sentence that front-loads the primary verb and resource before enumerating checks, so an agent gets the gist immediately. It is jargon-heavy but contains no filler or repetition.

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?

Seven optional parameters, no annotations, and no output schema mean the description should cover more ground. It describes the audit checks but not the synthesis output shape or which mode (audit vs. policy generation) results from which inputs, which is a notable gap for a tool whose headline feature is auto-synthesis.

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%, so every parameter is already documented in the schema, establishing a baseline of 3. The description adds only indirect meaning (169.254.169.254/32, default-deny, L7) that maps back to parameters already explained inline; it adds no syntax, format, or interaction detail beyond the schema.

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 uses a specific verb ('Audits') with a well-scoped resource ('distributed eBPF microsegmentation policies') and names concrete policy dialects (CiliumNetworkPolicy, Kubernetes NetworkPolicy). It implicitly separates itself from the generic vulnforge_audit_ebpf and vulnforge_audit_wasm_ebpf siblings by focusing on network policy posture, though it never names those siblings explicitly.

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 guidance on when to choose this tool over vulnforge_audit_ebpf, vulnforge_audit_wasm_ebpf, or vulnforge_audit_container, all of which could plausibly apply to eBPF-adjacent work. The only implied usage is the topic itself; no prerequisites, exclusions, or alternative routing are stated.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.