tech.xns/relayer

What we checked

Six static checks, weighted by risk. Every result reflects only what could be observed in the published package and repository — never intent.

• Injection surface

  unscannable25% of grade

  Tool descriptions/manifest scanned for instruction-injection patterns (imperatives at the model, hidden text, 'ignore previous', data-exfil URLs).

  No tool descriptions, server instructions, prompts, or resources were fetched; nothing to scan for injection.

• Supply chain

  pass25% of grade

  Package provenance: namespace verification, repo linkage, maintainer count, account age, postinstall scripts, typosquat distance.

  repository linkage verified

• Credential hygiene

  pass15% of grade

  How the server takes secrets (env vs plaintext config vs hardcoded); secrets appearing in tool schemas.

  No hardcoded secrets, secret-shaped tool parameters, or leaked keys found. PASS = no static red flag; static analysis cannot prove the code honors env-based secret handling at runtime.

• Permission scope

  fail15% of grade

  Declared tools vs. breadth (filesystem, network, exec); flags shell-exec and unbounded filesystem access.

  HIGH: downloads and pipes straight to a shell (src/lib/nodeVersion.js: pipes a download into a shell). has both shell/exec and destructive filesystem writes (src/lib/dockerUtil.js: imports child_process; src/tools/setupCliCredentials.js: destructive/writing fs.* call (write/unlink/rm/chmod/rename)). discloses shell/exec capability: src/lib/dockerUtil.js: imports child_process discloses shell/exec capability: src/tools/installRelayer.js: imports child_process discloses shell/exec capability: src/lib/oidcAuth.js: imports child_process and calls exec/spawn discloses broad/destructive filesystem access: src/tools/setupCliCredentials.js: destructive/writing fs.* call (write/unlink/rm/chmod/rename) Capability DISCLOSURE, not a verdict: static analysis sees the primitive is present and reachable, not whether its use is attacker-controlled.

• Version behavior

  fail10% of grade

  Diff of tool definitions between versions; new permissions or changed descriptions in a patch release (the postmark-mcp class).

  vs prior 0.10.1 (patch bump): new capability primitive(s) in source: child_process, fs-write; new hardcoded outbound host/BCC destination(s): 127.0.0.1, 192.168.1.100, auth.xns.tech, console.xns.tech, docker-box.lan, docs.docker.com, github.com, gitlab.com, raw.githubusercontent.com, releases.scpri.me, xns.tech.

• Transport config

  unscannable10% of grade

  Remote servers: TLS and auth mode (none/token/OAuth). Local servers: whether the manifest indicates it phones home.

  local stdio server: no remote transport or auth surface, and no phone-home/telemetry signal found in source. Absence of transport findings is NOT a safety guarantee — phone-home hosts can be constructed at runtime and defeat static analysis.