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Simpler.Asia
asia.simpler/simpler-asia in the official MCP registry.
Endpoint https://simpler.asia/mcp.
The registry describes it as: Free back office for small businesses in Singapore and Southeast Asia: invoices, expenses, stock.
We read its 200 tools on 2026-10-26. 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
simpler.directory simpler.describe_service simpler.invoke simpler.outcomes simpler.approval_status agent_note_send_cross_tenant contact_upsert expense_create expense_submit expense_approve interaction_create invoice_create invoice_adjustment_record invoice_payment_record myinvois_invoice_generate myinvois_invoice_record_submission myinvois_invoice_read quote_create quote_convert settlement_proposal_propose_cross_tenant sticky_note_create stock_item_adjust team_assignment_create workflow_create workflow_prepared_outputs ai.budget ai.estimate_cost sales_receivables sales_document_show invoice_message_prepare invoice_reminders_due statement_prepare invoice_handoff forecast.run forecast.run_stored forecast.read image.generate document.extract spreadsheet.create_with_content agent_note_mark_read agent_note_list agent_note_read brand_assets_read brand_assets_list consent_grant_list consent_grant_read contact_create contact_update contact_delete contact_read contact_list contact_search contact_note_create contact_note_list contact_note_read contact_note_delete desk_surface_create desk_surface_update desk_surface_read desk_surface_list and 140 more
Run this server? Show the check in your README
The badge reflects the latest weekly read: 
[](https://lazaretto.dev/mcp-registry/asia-simpler-simpler-asia)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.
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