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ZapSign
io.github.mcp-dir/zapsign-mcp in the official MCP registry.
Endpoint https://api.mcp.ai/p_zapsign. Source: github.com/mcp-dir/zapsign-mcp.
The registry describes it as: ZapSign electronic document signing via the official API: create documents for signature (from PDF,
We read its 35 tools on 2026-10-27. Nothing in them matched our tool-poisoning rules. It also sets server instructions, text a client puts in front of the model on connect; those were read too.
A clean read means these rules found nothing, not that the server is harmless. A server can change its tools at any time, which is why the index reads it again every week.
Tools it advertises
zapsign_list_accounts zapsign_documents_list zapsign_documents_get zapsign_documents_signer_log zapsign_documents_write_create zapsign_documents_write_create_from_template zapsign_documents_write_update zapsign_documents_write_delete zapsign_documents_write_refuse zapsign_documents_write_place_signatures zapsign_documents_write_add_extra_doc zapsign_signers_get zapsign_signers_write_add zapsign_signers_write_update zapsign_signers_write_remove zapsign_signers_write_sign zapsign_templates_list zapsign_templates_get zapsign_templates_write_create zapsign_templates_write_update zapsign_templates_write_delete zapsign_webhooks_write_create zapsign_webhooks_write_delete zapsign_checks_get zapsign_checks_write_create zapsign_account_plan zapsign_account_users zapsign_account_write_create_user zapsign_account_write_delete_user show_version report_bug connect toolkit_info marketplace authenticate
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The badge reflects the latest weekly read: 
[](https://lazaretto.dev/mcp-registry/io-github-mcp-dir-zapsign-mcp)How this was checked
Lazaretto connects to the endpoint the way any MCP client does, asks the server to introduce itself and list its tools, and reads every name, description, parameter schema and server instruction for tool poisoning: hidden directive blocks, orders to read local secrets, parameters built to carry secrets or the conversation out, orders that redirect another server's tools, and invisible characters. It never calls a tool. What we found across the registry.
To run the same check every time Claude Code adds a server, install the free lazaretto-guard plugin. Browse every server in the index.
Related
| com.freedailypro/tools com.freedailypro/tools | 178 tools, nothing matched 2026-10-27 |
| AI SENSE Free Public Tools com.aisenseapi/free-public-tools | 66 tools, nothing matched 2026-10-26 |
| TidyTools Free Web Data io.github.tidytools/tidytools-free | 45 tools, nothing matched 2026-10-22 |
| Ocrspace io.github.pipeworx-io/ocrspace | 43 tools, nothing matched 2026-10-27 |
| io.github.MCPServings/paper-mcp io.github.MCPServings/paper-mcp | 41 tools, nothing matched 2026-10-27 |
| com.mart402/extract com.mart402/extract | 35 tools, nothing matched 2026-10-22 |