exchange.merx/mcp

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.

  Reads secrets from the environment (e.g. src/lib/api.ts) — the recommended intake shape. PASS = no static red flag; static analysis cannot prove the code honors env-based secret handling at runtime.

• Permission scope

  warn15% of grade

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

  discloses broad/destructive filesystem access: src/tools/account.ts: path traversal ('../') combined with file access discloses broad/destructive filesystem access: src/tools/chain.ts: path traversal ('../') combined with file access discloses broad/destructive filesystem access: src/tools/contract-formatters.ts: path traversal ('../') combined with file access discloses broad/destructive filesystem access: src/tools/contracts.ts: path traversal ('../') combined with file access discloses broad/destructive filesystem access: src/tools/convenience.ts: path traversal ('../') combined with file access discloses broad/destructive filesystem access: src/prompts/developer.ts: path traversal ('../') combined with file access discloses broad/destructive filesystem access: src/prompts/dex.ts: path traversal ('../') combined with file access discloses broad/destructive filesystem access: src/tools/dex.ts: path traversal ('../') combined with file access discloses broad/destructive filesystem access: src/tools/estimation.ts: path traversal ('../') combined with file access discloses broad/destructive filesystem access: src/resources/handlers.ts: path traversal ('../') combined with file access discloses broad/destructive filesystem access: src/tools/intent.ts: path traversal ('../') combined with file access discloses broad/destructive filesystem access: src/prompts/market.ts: path traversal ('../') combined with file access discloses broad/destructive filesystem access: src/prompts/monitoring.ts: path traversal ('../') combined with file access discloses broad/destructive filesystem access: src/tools/network.ts: path traversal ('../') combined with file access discloses broad/destructive filesystem access: src/prompts/onboarding.ts: path traversal ('../') combined with file access discloses broad/destructive filesystem access: src/tools/onboarding.ts: path traversal ('../') combined with file access discloses broad/destructive filesystem access: src/prompts/payments.ts: path traversal ('../') combined with file access discloses broad/destructive filesystem access: src/tools/payments.ts: path traversal ('../') combined with file access discloses broad/destructive filesystem access: src/prompts/planning.ts: path traversal ('../') combined with file access discloses broad/destructive filesystem access: src/tools/prices.ts: path traversal ('../') combined with file access discloses broad/destructive filesystem access: src/prompts/simulation.ts: path traversal ('../') combined with file access discloses broad/destructive filesystem access: src/tools/standing-orders.ts: path traversal ('../') combined with file access discloses broad/destructive filesystem access: src/tools/token-formatters.ts: path traversal ('../') combined with file access discloses broad/destructive filesystem access: src/tools/tokens.ts: path traversal ('../') combined with file access discloses broad/destructive filesystem access: src/tools/trading.ts: path traversal ('../') combined with file access discloses broad/destructive filesystem access: src/prompts/transactions.ts: path traversal ('../') combined with file access discloses broad/destructive filesystem access: src/prompts/wallet.ts: path traversal ('../') combined with file access 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 1.0.4 (patch bump): new capability primitive(s) in source: http-client; new hardcoded outbound host/BCC destination(s): api.coingecko.com, api.trongrid.io, tronscan.org.

• 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.