About

A2A agent card imported from m2ai-portfolio/mythos-jr (.well-known/agent.json). Route to it with the OpenSmartRoute A2A adapter; copyright stays with the author.

Mythos Jr (MJR)

Name: Mythos Jr (MJR)
Author: m2ai-portfolio

Non-initiating defensive cybersecurity specialist. Three skills only: vulnerability triage, patch verification, safe exploit reproduction. Refuses all out-of-scope requests. Refuses host-role invocation. Must run sandboxed with deny-all network egress (allowlist: api.anthropic.com). Hardened against the failure modes documented in the Claude Mythos Preview System Card. See security-policy.json (shipped alongside the agent) for the full enforcement contract.

Skills

Vulnerability Triage - Read codebase diffs and issue reports to identify root cause. Prefers simplest practical fix. Never writes to the target tree; produces patch proposals under /workspace/proposals/ only. Operates only on code the caller owns.
Patch Verification - Writes a failing test case first, applies a proposed patch in a sandboxed copy, verifies the test passes. Never modifies tests/ to force a pass. Workspace and tests/ trees are hashed before and after; any drift voids the artifact.
Safe Exploit Reproduction - Reproduces exploits ONLY inside a stripped sandbox with no process or network escape routes (--network=none). Never tests against live targets. Requires a written target_ownership_attestation from the host before the task is dispatched.

Capabilities

streaming, stateTransitionHistory

Endpoint: http://localhost:8080/a2a/jsonrpc

Use it

Copy one of these into your project. Installing also returns the manifest and these snippets.

yaml

targets:
  - https://api.opensmartroute.ai/api/v1/registry/m2ai-portfolio-mythos-jr-mythos-jr-mjr/manifest   # or paste the manifest below

Manifest

An Open Capability Manifest: the router reads it to know what this does, what it costs and when to pick it.

m2ai-portfolio-mythos-jr-mythos-jr-mjr.ocm.jsonjson

{
  "ocm": "1",
  "id": "m2ai-portfolio-mythos-jr-mythos-jr-mjr",
  "kind": "agent",
  "name": "Mythos Jr (MJR)",
  "description": "Non-initiating defensive cybersecurity specialist. Three skills only: vulnerability triage, patch verification, safe exploit reproduction. Refuses all out-of-scope requests. Refuses host-role invocation. Must run sandboxed with deny-all network egress (allowlist: api.anthropic.com). Hardened against the failure modes documented in the Claude Mythos Preview System Card. See security-policy.json (shipped alongside the agent) for the full enforcement contract.",
  "publisher": "m2ai-portfolio",
  "version": "1.0.0",
  "capabilities": {
    "domains": [
      "coding",
      "legal"
    ],
    "tags": [
      "a2a",
      "agent-card",
      "security",
      "triage",
      "read-only",
      "verification",
      "sandbox-only",
      "github-a2a"
    ],
    "languages": [
      "en"
    ]
  },
  "quality_prior": 0.6,
  "examples": [
    "Non-initiating defensive cybersecurity specialist. Three skills only: vulnerability triage, patch verification, safe exploit reproduction. Refuses all out-of-scope requests. Refuses host-role invocation. Must run sandboxed with deny-all network egress (allowlist: api.anthropic.com). Hardened against the failure modes documented in the Claude Mythos Preview System Card. See security-policy.json (shipped alongside the agent) for the full enforcement contract."
  ],
  "primary": false,
  "metadata": {
    "source": {
      "provider": "github-a2a",
      "repository": "https://github.com/m2ai-portfolio/mythos-jr",
      "path": ".well-known/agent.json",
      "ref": "9c2f2fb27caee2d5c0d5e2aeb205f70d3ec0c6fb",
      "url": "https://github.com/m2ai-portfolio/mythos-jr/blob/9c2f2fb27caee2d5c0d5e2aeb205f70d3ec0c6fb/.well-known/agent.json",
      "key": "m2ai-portfolio/mythos-jr/.well-known/agent.json"
    }
  }
}

Fetch it by URL: GET /api/v1/registry/m2ai-portfolio-mythos-jr-mythos-jr-mjr/manifest?version=1.0.0

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