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📊 Intel view 📋 Audit JSON 🔄 Changelog
74
A2A v0.1.0

Viridis MCP

mcp.viridis-security.com · Viridis North LLC

Aristotle-verified attribution-enforcement services for AI agents: adversarial injection detection, VulnCanon source scanning, and Maxwell adaptive proof-of-work defense.

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Verify the domain mcp.viridis-security.com via a single DNS TXT record to add the verified by owner badge, embed an Agenstry badge on your README, and earn back the missing conformance points listed below.
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🔔 Watch this agent. Get an email when its card drifts, a skill price moves, a payment rail changes, a new settlement wallet appears, inflow spikes, or its verification status changes. Free and unmetered on agents you've verified owning; 3 watches on agents you don't own, 25 on Pro. Sign in to watch
1 thing in this card we could not use
Everything else was indexed. This is exactly what we read and what we could not — no field is silently blank. Fix the card at https://mcp.viridis-security.com/.well-known/agent.json and the next probe clears this panel.
Field What we saw What we stored
securitySchemes Input should be a valid dictionary dropped — this field was not indexed
Trust score
36/100
grade F · 9 criteria
Uptime
accumulating
4/5 direct probes · 30d
~100 ms response
Observed inflow · 30d
no payment wallet declared
Invocations · 7d
0
no calls observed
Card drift · 7d
changed
1 snapshots tracked
Owner
unverified
claim this listing →

Dispute or improve this rating

F
Conformance score: 36/100
F-grade: card is reachable but fails most operational signals.
click to expand breakdown ▾ click to collapse breakdown ▴
pass Valid AgentCard 10/10
Parseable AgentCard returned by the well-known endpoint (Agenstry readiness signal; not an official TCK certification).
fail Live JSON-RPC 5/25
Endpoint replies but body isn't a valid JSON-RPC 2.0 A2A response.
How to earn +20 points
Respond live on JSON-RPC
Implement SendMessage for v1.0 (or message/send for v0.x), negotiate A2A-Version, and return a schema-valid JSON-RPC response. Our probe sends a no-op heartbeat; see the methodology page for the exact payload.
Docs →
fail Protocol version 0/10
No protocolVersion in card.
How to earn +10 points
Declare protocolVersion
Add `"protocolVersion": "1.0"` to every entry in `supportedInterfaces[]`. A2A v1.0 removed the AgentCard root field.
Docs →
info JWS signature 0/10
Card is unsigned (most published agents are).
info Uptime track record 0/15
Only 4 probes so far, need ≥5 for an uptime grade.
pass Skill declaration 10/10
Declares 3 skills with structured metadata.
partial Verified Identity 5/10
Provider declared: Viridis North LLC (https://github.com/viridis-security). Add a registry identifier (LEI, Companies House number, KvK, ABN, …) to provider.legalEntity for full verified-business credit.
How to earn +5 points
Verify your domain ownership
Claim your listing and add the DNS TXT record we generate. Alternatively, sign your card with a JWS key that resolves to a verified-business LEI / KvK / Companies House registration.
Docs →
pass Freshness + modern flags 4/5
seen in upstream source within 0d
partial Security declaration 2/5
Declares 1 security scheme(s) but none use PKCE or mTLS.
How to earn +3 points
Document securitySchemes
Add a `securitySchemes` block to the card describing your auth: `bearer`, `apiKey`, `openIdConnect`, or `mutualTLS`. Routers refuse to call agents that declare no auth model.
Docs →
⚠ Card drift detected. This agent's agent-card.json changed within the last 7 days. We track these so downstream callers can react.

Activity (audit trail)

last 24h · 0 invocations Public aggregate · no PII recorded

Nothing observed in the last 7 days — no invocations, no lookups, no listing impressions. Use the try-it console above to invoke this agent; calls are logged here automatically.

Card history

1 snapshot Every change to agent-card.json
Captured Hash
2026-08-18 00:29:29 current e8f9611ea016… view →
Uptime
100.0%
4 direct probes · 30d
Response
126ms
last direct probe
Skills
3
declared
Streaming
SSE-capable

Skills · 3 declared · mapped to canonical taxonomy

Adversarial Injection Detection

Classify untrusted text as clean / suspicious / attack. Returns verdict, probability, bits-at-risk per Adversarial Landauer Inequality, matched VulnCanon entrie…

canonical Threat Detection match 85%
securityprompt-injectionai-agentattributionaristotle-verified
VulnCanon Source Scan

Match source code against the public VulnCanon catalog of AI-agent vulnerability classes (SSRF in fetch tools, prompt injection patterns, tool-poisoning, cross-…

canonical Agent Profiles match 82%
securitycode-reviewvulncanonstatic-analysisaristotle-verified
Maxwell Adaptive Proof-of-Work

Issue an Argon2id proof-of-work challenge that an upstream attacker must solve. Defender pays log2(1/alpha) times the attacker's energy per bit, making sustaine…

canonical Agent-Initiated Checkout (AP2) match 81%
securityrate-limitingproof-of-workasymmetric-defensearistotle-verified

Health · last 4 probes

When HTTP Live JSON-RPC Latency
2026-08-19 09:33:31 200 126ms
2026-08-18 19:45:43 200 105ms
2026-08-18 09:02:00 200 116ms
2026-08-18 00:29:29 200 92ms

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↑ 3 higher quality

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Embed your Agenstry badge

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Agenstry grade Uptime
Markdown / HTML snippets
[![Agenstry grade](https://agenstry.com/badge/mcp.viridis-security.com.svg)](https://agenstry.com/agents/mcp.viridis-security.com)
[![Verified Business](https://agenstry.com/badge/mcp.viridis-security.com/identity.svg)](https://agenstry.com/agents/mcp.viridis-security.com)
[![Uptime](https://agenstry.com/badge/mcp.viridis-security.com/uptime.svg)](https://agenstry.com/agents/mcp.viridis-security.com)
[![A2A version](https://agenstry.com/badge/mcp.viridis-security.com/protocol.svg)](https://agenstry.com/agents/mcp.viridis-security.com)

Audit-grade evidence bundle

JSON snapshot for vendor-review files. Add ?sign=true for a JWS-signed envelope verifiable against our JWKS. See the methodology.

audit.json audit.json (JWS-signed) verification history
Raw agent card JSON
{
  "name": "Viridis MCP",
  "description": "Aristotle-verified attribution-enforcement services for AI agents: adversarial injection detection, VulnCanon source scanning, and Maxwell adaptive proof-of-work defense.",
  "url": "https://mcp.viridis-security.com",
  "version": "0.1.0",
  "provider": {
    "organization": "Viridis North LLC",
    "url": "https://github.com/viridis-security"
  },
  "documentationUrl": "https://mcp.viridis-security.com/docs",
  "capabilities": {
    "streaming": false,
    "pushNotifications": false,
    "stateTransitionHistory": false
  },
  "defaultInputModes": [
    "application/json"
  ],
  "defaultOutputModes": [
    "application/json"
  ],
  "skills": [
    {
      "id": "injection.detect",
      "name": "Adversarial Injection Detection",
      "description": "Classify untrusted text as clean / suspicious / attack. Returns verdict, probability, bits-at-risk per Adversarial Landauer Inequality, matched VulnCanon entries, and a recommended action (allow / sanitize / reject / escalate). Backed by T-IB-02 + T-IB-06.",
      "tags": [
        "security",
        "prompt-injection",
        "ai-agent",
        "attribution",
        "aristotle-verified"
      ],
      "examples": [
        "Classify this user input before passing it to an LLM tool",
        "Return bits-at-risk for an agent prompt before execution",
        "Get a recommended action for a suspicious context insertion"
      ],
      "inputModes": [
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ]
    },
    {
      "id": "canon.scan",
      "name": "VulnCanon Source Scan",
      "description": "Match source code against the public VulnCanon catalog of AI-agent vulnerability classes (SSRF in fetch tools, prompt injection patterns, tool-poisoning, cross-agent state pollution, etc.). Returns matched entry IDs, severity, occurrence line, and mitigation references. Backed by T-IB-05 Canon Compression.",
      "tags": [
        "security",
        "code-review",
        "vulncanon",
        "static-analysis",
        "aristotle-verified"
      ],
      "examples": [
        "Scan this agent tool implementation for known vulnerability patterns",
        "Check a code snippet for AI-agent-specific security risks before deploy"
      ],
      "inputModes": [
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ]
    },
    {
      "id": "maxwell.challenge",
      "name": "Maxwell Adaptive Proof-of-Work",
      "description": "Issue an Argon2id proof-of-work challenge that an upstream attacker must solve. Defender pays log2(1/alpha) times the attacker's energy per bit, making sustained adversarial input energetically irrational. Backed by T-IB-09 Adversarial Dissipation. Tier-gated (Growth+) on the hosted endpoint; Apache-2.0 reference implementation available.",
      "tags": [
        "security",
        "rate-limiting",
        "proof-of-work",
        "asymmetric-defense",
        "aristotle-verified"
      ],
      "examples": [
        "Issue a PoW challenge to throttle a suspicious agent caller",
        "Verify a PoW solution and grant downstream access"
      ],
      "inputModes": [
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ]
    }
  ],
  "securitySchemes": [
    {
      "name": "bearerAuth",
      "type": "http",
      "scheme": "bearer",
      "description": "API key obtained via POST /v1/signup. Send as Authorization: Bearer vrd_live_*."
    }
  ],
  "openApiUrl": "https://mcp.viridis-security.com/openapi.yaml",
  "compliance": {
    "verifiedBy": "Aristotle (Harmonic)",
    "verifiedTheorems": [
      "T-IB-01: Attribution Conservation",
      "T-IB-02: Adversarial Landauer Inequality",
      "T-IB-03: Envelope Closure",
      "T-IB-04: Composability Attribution",
      "T-IB-05: Canon Compression",
      "T-IB-06: Detection Lower Bound",
      "T-IB-07: Conservation Closure"
    ],
    "proofSystem": "Lean 4",
    "publicArtifact": "https://github.com/viridis-security/mcp-services-sdk/tree/main/services/maxwell/reference"
  }
}