io.github.lonniev/taxsort-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

  pass25% of grade

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

  Scanned 560 text field(s); no instruction-injection patterns found. PASS = no static red flag. A server can serve different tool descriptions at runtime (the rug-pull class), which static scanning cannot see.

• Supply chain

  fail25% of grade

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

  Python build script executes at build time: network call in build script

• Credential hygiene

  fail15% of grade

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

  tool "taxsort_check_balance" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_purchase_credits" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_check_payment" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_restore_credits" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_account_statement" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_account_statement_infographic" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_report_issue" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_get_patron_onboarding_status" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_receive_credentials" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_receive_credentials" has a secret-shaped input parameter "credential_card" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_forget_credentials" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_update_patron_credential" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_update_operator_credential" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_delete_patron_credential" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_delete_operator_credential" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_get_patron_credential_fields" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_receive_npub_proof" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_check_proof_status" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_set_pricing_model" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_reset_pricing_model" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_request_adoption" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_adoption_status" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_restore_neon_schema" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_check_price" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_mint_coupon" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_list_coupons" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_update_coupon" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_delete_coupon" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_redeem_coupon" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_list_my_coupons" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_forget_coupon" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_verify_passphrase" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_create_session" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_get_session" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_list_sessions" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_import_csv" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_get_import_stats" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_get_transactions" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_get_transactions_paged" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_save_classifications" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_delete_classification" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_clear_transactions" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_delete_account_transactions" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_reset_classifications" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_get_amount_neighbors" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_get_accounts" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_set_account_type" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_get_summary" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_get_rules" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_save_rule" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_delete_rule" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_apply_rules" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_count_rule_matches" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_get_custom_categories" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_save_custom_category" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_delete_custom_category" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_create_share_token" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_load_share_token" has a secret-shaped input parameter "share_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_load_share_token" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_get_github_token" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_get_anthropic_key" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_report_api_usage" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_get_api_usage_stats" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_create_feedback_issue" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_list_feedback_issues" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_session_heartbeat" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_ask_advisor" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_ask_tax_researcher" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_request_unlock" has a secret-shaped input parameter "dpop_token" — secrets must never be tool parameters (the model would supply/handle the credential). tool "taxsort_check_unlock" has a secret-shaped input parameter "dpop_token" — 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.

  Network egress present (pyproject declares an HTTP client dependency) — expected for most servers and not a finding on its own. 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

  warn10% of grade

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

  vs prior 0.30.1 (patch bump): tool "taxsort_check_balance" description changed (wording only, no injection pattern); tool "taxsort_purchase_credits" description changed (wording only, no injection pattern); tool "taxsort_check_payment" description changed (wording only, no injection pattern); tool "taxsort_restore_credits" description changed (wording only, no injection pattern); tool "taxsort_account_statement" description changed (wording only, no injection pattern); tool "taxsort_account_statement_infographic" description changed (wording only, no injection pattern); tool "taxsort_report_issue" description changed (wording only, no injection pattern); tool "taxsort_get_patron_onboarding_status" description changed (wording only, no injection pattern); tool "taxsort_session_status" description changed (wording only, no injection pattern); tool "taxsort_request_credential_channel" description changed (wording only, no injection pattern); tool "taxsort_receive_credentials" description changed (wording only, no injection pattern); tool "taxsort_forget_credentials" description changed (wording only, no injection pattern); tool "taxsort_update_patron_credential" description changed (wording only, no injection pattern); tool "taxsort_update_operator_credential" description changed (wording only, no injection pattern); tool "taxsort_delete_patron_credential" description changed (wording only, no injection pattern); tool "taxsort_delete_operator_credential" description changed (wording only, no injection pattern); tool "taxsort_get_patron_credential_fields" description changed (wording only, no injection pattern); tool "taxsort_request_npub_proof" description changed (wording only, no injection pattern); tool "taxsort_receive_npub_proof" description changed (wording only, no injection pattern); tool "taxsort_check_proof_status" description changed (wording only, no injection pattern); tool "taxsort_request_adoption" description changed (wording only, no injection pattern); tool "taxsort_publish_nostr_profile" description changed (wording only, no injection pattern); tool "taxsort_check_price" description changed (wording only, no injection pattern); tool "taxsort_mint_coupon" description changed (wording only, no injection pattern); tool "taxsort_get_notarization_proof" description changed (wording only, no injection pattern); tool "taxsort_list_notarizations" description changed (wording only, no injection pattern).

• 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)