Is the Heusai Notsy Facturacion MCP server down?

mcp-registry/io.github.heusai/notsy-facturacion

healthy
Last checked 2026-10-26 18:42 UTC · handshake 250ms

As of 2026-10-26 18:42 UTC, the Heusai Notsy Facturacion MCP server is up with a Glimind reliability score of 84/100 (grade B). Over the last 30 days it answered 99.8% of Glimind's liveness checks. It had 14 outages in 90 days, with a median recovery of 7 minutes.

uptime (30d checks)
99.8%
checks observed
4,922
outages (90d)
14
tools
4

Emite CFDIs 4.0 y resuelve claves del SAT para agentes de IA (México), con permisos por API key.

Point your MCP client at this streamable-http endpoint: https://mcp.notsy.com.mx/mcp

Agent-readiness: C (73/100)

C (73/100): 0 error(s), 2 warning(s) across 4 tool(s); ~1,078 tokens of tool definitions.
Scores higher than 8% of 15,767 MCP servers Glimind has audited.
Its tool list costs an agent ~1,078 tokens per session — lighter than 75% of servers.
71 → 73 since 2026-10-17
no tool-poisoning patterns
Schemas100
Descriptions38
Safety hints30
Token cost100
Client compatibility70
Protocol100
Reliability100
Stability100

What to fix (3)

4 of 4 tool(s) carry no readOnlyHint/destructiveHint annotations.

Annotate read-only tools with {"readOnlyHint": true}. Agents and gateways can then run them without a confirmation prompt, and route around destructive ones. How to fix →

Tools: emitir_cfdi, preview_factura, resolver_claves_sat, whoami

19 parameter(s) across 3 tool(s) have no description.

Add a "description" to each parameter with its format and an example ("ISO 8601 date, e.g. 2026-10-17"). This is the commonest cause of wrong arguments on the first call. How to fix →

Tools: emitir_cfdi, preview_factura, resolver_claves_sat

No tool declares an outputSchema.

Declare outputSchema and return structuredContent (MCP 2025-06-18+). Agents can then parse results without guessing, and chain tools reliably. How to fix →

Auto-fix: 2 corrected tool definitions

Paste-ready definitions with the problems above fixed. Changes marked verify need a human look. 3 tool(s) still need parameter descriptions written by someone who knows the API. All of them as JSON: /v1/readiness/mcp-registry%2Fio.github.heusai%2Fnotsy-facturacion/fixes

preview_factura 1 change 
{
  "name": "preview_factura",
  "description": "DRY-RUN: valida la factura y calcula los totales (subtotal, IVA, retenciones, total) SIN\n    timbrar, reservar ni cobrar. También devuelve la cotización canónica de créditos y el saldo\n    proyectado. Úsalo SIEMPRE antes de emitir_cfdi para confirmar el monto, el costo y que los datos\n    pasen la validación. Aplicar un anticipo cotiza dos CFDI (ingreso + egreso).\n\n    Args:\n        conceptos: lista de conceptos. Cada uno: {descripcion, clave_prodserv, clave_unidad,\n            cantidad, valor_u",
  "inputSchema": {
    "type": "object",
    "title": "preview_facturaArguments",
    "required": [
      "conceptos"
    ],
    "properties": {
      "cliente": {
        "anyOf": [
          {
            "type": "object",
            "additionalProperties": true
          },
          {
            "type": "null"
          }
        ],
        "title": "Cliente",
        "default": null
      },
      "conceptos": {
        "type": "array",
        "items": {
          "type": "object",
          "additionalProperties": true
        },
        "title": "Conceptos"
      },
      "emisor_id": {
        "anyOf": [
          {
            "type": "string"
          },
          {
            "type": "null"
          }
        ],
        "title": "Emisor Id",
        "default": null
      },
      "cliente_id": {
        "anyOf": [
          {
            "type": "string"
          },
          {
            "type": "null"
          }
        ],
        "title": "Cliente Id",
        "default": null
      },
      "forma_pago": {
        "type": "string",
        "title": "Forma Pago",
        "default": "03"
      },
      "anticipo_id": {
        "anyOf": [
          {
            "type": "string"
          },
          {
            "type": "null"
          }
        ],
        "title": "Anticipo Id",
        "default": null
      },
      "metodo_pago": {
        "type": "string",
        "title": "Metodo Pago",
        "default": "PUE"
      }
    }
  },
  "annotations": {
    "readOnlyHint": true
  }
}
resolver_claves_sat 1 change 
{
  "name": "resolver_claves_sat",
  "description": "Convierte una descripción en lenguaje natural a las claves del SAT necesarias para facturar.\n\n    Devuelve `sugerencia` con clave_prodserv, clave_unidad, objeto_imp, tasa_iva y uso_cfdi, más\n    `candidatos` por si quieres elegir otra. Llámalo antes de armar un concepto si no conoces las claves.\n\n    Args:\n        descripcion: qué se vende, p.ej. \"consultoría de marketing\" o \"laptop Dell\".\n        unidad_hint: opcional, unidad de medida en palabras (\"servicio\", \"hora\", \"pieza\", \"kg\").\n        co",
  "inputSchema": {
    "type": "object",
    "title": "resolver_claves_satArguments",
    "required": [
      "descripcion"
    ],
    "properties": {
      "con_iva": {
        "type": "boolean",
        "title": "Con Iva",
        "default": true
      },
      "descripcion": {
        "type": "string",
        "title": "Descripcion"
      },
      "unidad_hint": {
        "type": "string",
        "title": "Unidad Hint",
        "default": ""
      }
    }
  },
  "annotations": {
    "readOnlyHint": true
  }
}

Get alerted

Get an email or webhook when this server's readiness drops by 10+ points, tool-poisoning text appears, or a tool breaks:

curl -X POST https://glimind.com/v1/subscriptions -H 'content-type: application/json' -d '{"tools":["mcp-registry/io.github.heusai/notsy-facturacion"],"email":"[email protected]"}'

Agents: watch_tool({"toolId": "mcp-registry/io.github.heusai/notsy-facturacion"}) over MCP.

Passed

Largest tool definitions

Static checks of the advertised tools/list (schema, descriptions, annotations, tool-poisoning patterns, names, size) plus observed protocol, uptime, latency and contract changes. Read-only: no tool is ever called. Weights: schema 15, docs 20, safety 15, efficiency 15, compatibility 15, protocol 5, reliability 10, stability 5. Token counts are estimates (~3.6 characters per token).

Operator? Fix these, then re-check live. Embed the readiness badge:

Markdown 
[![MCP agent-readiness](https://glimind.com/v1/readiness/badge/mcp-registry%2Fio.github.heusai%2Fnotsy-facturacion.svg)](https://glimind.com/server/mcp-registry%2Fio.github.heusai%2Fnotsy-facturacion?ref=badge)
HTML 
<a href="https://glimind.com/server/mcp-registry%2Fio.github.heusai%2Fnotsy-facturacion?ref=badge"><img src="https://glimind.com/v1/readiness/badge/mcp-registry%2Fio.github.heusai%2Fnotsy-facturacion.svg" alt="MCP agent-readiness"></a>
reStructuredText 
.. image:: https://glimind.com/v1/readiness/badge/mcp-registry%2Fio.github.heusai%2Fnotsy-facturacion.svg
   :target: https://glimind.com/server/mcp-registry%2Fio.github.heusai%2Fnotsy-facturacion?ref=badge
   :alt: MCP agent-readiness

Tool-definition log

Glimind records every version of this server's tool definitions in a signed, append-only transparency log. Current manifest sha256:e57d84c1db898a6f…, first seen 2026-10-17, included at leaf 6522 of 74,800. Version history · verify what your client received.

Tools (4)

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Claude Code

claude mcp add --transport http glimind https://glimind.com/mcp

Claude Desktop · Windsurf · Cline (mcpServers JSON)

{
  "mcpServers": {
    "glimind": {
      "type": "http",
      "url": "https://glimind.com/mcp"
    }
  }
}

FAQ

Is the Heusai Notsy Facturacion MCP server down right now?

As of 2026-10-26 18:42 UTC, the Heusai Notsy Facturacion MCP server is up with a Glimind reliability score of 84/100 (grade B). Over the last 30 days it answered 99.8% of Glimind's liveness checks. It had 14 outages in 90 days, with a median recovery of 7 minutes.

How many tools does Heusai Notsy Facturacion MCP server provide?

Heusai Notsy Facturacion MCP server advertises 4 tools, including emitir_cfdi, preview_factura, resolver_claves_sat, whoami.

How do I install Heusai Notsy Facturacion MCP server?

Point your MCP client at this streamable-http endpoint: https://mcp.notsy.com.mx/mcp

Is the Heusai Notsy Facturacion MCP server safe to connect to an AI agent?

Glimind scanned all 4 tool definitions for tool-poisoning patterns — hidden or invisible characters, instructions that override the model, concealment from the user, requests to read credential or MCP config files, conversation exfiltration and cross-tool shadowing — and found none. This checks what the server tells the model, not what its code does; review the source before granting access to sensitive data.

Operator of Heusai Notsy Facturacion MCP server?

Status page: 90-day uptime, every outage and how long it lasted.

Claim this listing to get the Verified operator marker, a remediation checklist and owner analytics, or embed the live badge from any of the tool pages above. Maintainers: alerts, deploy attestation and monthly reports.

Status is an automated estimate from Glimind's liveness checks (handshake and tool listing only; no tool is ever called) and may lag or differ from your network. Glimind is not affiliated with this server or its operator. Operator? Request a correction or opt out at https://glimind.com/opt-out.

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