io.thegavel/gavel

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

  warn25% of grade

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

  tool "list_onchain_indicators" description: off-vendor URL in a description (mcp.bitcoincreditstack.com); capability text should not name where data goes. tool "get_mvrv" description: off-vendor URL in a description (mcp.bitcoincreditstack.com); capability text should not name where data goes. server instructions: off-vendor URL in a description (mcp.bitcoincreditstack.com); capability text should not name where data goes.

• Supply chain

  warn25% of grade

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

  dependency "viem" is edit-distance 2 from top-20 package "vue" (typosquat candidate)

• Credential hygiene

  fail15% of grade

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

  tool "prepare_create_auction_calldata" has a secret-shaped input parameter "collateral_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "prepare_create_auction_calldata" has a secret-shaped input parameter "loan_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "prepare_claim_refund_calldata" has a secret-shaped input parameter "token_address" — secrets must never be tool parameters (the model would supply/handle the credential).

• Permission scope

  pass15% of grade

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

  No shell-exec, unbounded/sensitive filesystem, or download-and-run primitives found in scanned source. PASS = no static red flag. Static scanning is blind to code fetched or executed at runtime.

• 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 0.3.0 (minor bump): tool "list_gavel_indicators" description changed (wording only, no injection pattern); tool "get_gavel_indicator" description changed (wording only, no injection pattern); tool "list_onchain_indicators" description changed and now contains embedded outbound URL; tool "get_mvrv" description changed and now contains embedded outbound URL; new hardcoded outbound host/BCC destination(s): api-testnet.thegavel.io, arb1.arbitrum.io, sepolia-rollup.arbitrum.io.

• Transport config

  fail10% of grade

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

  remote MCP endpoint declares NO authentication (unauthenticated remote — nginx-ui/CVE-2026-33032 class)