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Zabbix MCP Server

Zabbix MCP Server

regexp_get

Read-only

Retrieve global regular expressions for reuse across Zabbix LLD filters and trigger expressions, optionally including their test expressions and filtering by name, ID, or pattern.

Instructions

Retrieve global regular expressions. These named regexp objects are reusable across Zabbix -- referenced in LLD (Low-Level Discovery) rules to filter discovered entities, in trigger expressions, and elsewhere. Each regexp can contain multiple test expressions with different match types (character string included, result is TRUE/FALSE, etc.). Use selectExpressions to include the test expressions.

Input Schema

NameRequiredDescriptionDefault
limitNoMaximum number of results to return.
filterNoReturn only results whose properties exactly match the given values (a single value or a list of values per key). Example: {"status": 0} or {"status": [0, 1]}. Keys: name, regexpid, test_string. Text properties cannot be filtered; use 'search' for them.
outputNoProperties of the regexp object to return. Pass 'extend' for all, 'count' for the number of matches only, or a list of property names. Default when omitted: regexpid, name. Properties: description (8.0+), name, regexpid, test_string.
searchNoReturn results whose string properties contain the given pattern (case-insensitive; '*' is a wildcard when searchWildcardsEnabled is true). Example: {"name": "web"}. Keys: description (8.0+), name, test_string.
serverNoTarget Zabbix server. Available: default. Defaults to 'default' if omitted.
raw_jsonNoStrips the security disclaimer preamble from the response so it is pure JSON. Default: false. Requires the bearer token to have 'allow_raw_json' explicitly enabled by an operator in the admin portal - tokens without that policy receive a PolicyError instead. WARNING: setting true bypasses the prompt-injection mitigation marker that wraps untrusted Zabbix data (host names, item descriptions, problem text). LLM clients (Claude, GPT, Cursor, ...) should leave this false; only programmatic non-LLM consumers (Python scripts, n8n workflows that json.loads the result) should set true.
regexpidsNoReturn only regular expressions with the given IDs.
sortfieldNoSort by one or more of: regexpid, name (a list for several; pair with 'sortorder'). No other property is sortable.
sortorderNoSort order: 'ASC' (ascending) or 'DESC' (descending).
countOutputNoReturn the count of matching results instead of the actual data.
searchByAnyNoIf true, return results matching ANY search field (OR). Default is ALL fields (AND).
extra_paramsNoOther native regexp.get parameters, merged into the request as-is. Sub-object selects (value 'extend', 'count' or a list of property names): selectExpressions. Any other key is refused here, because Zabbix would silently ignore it. For a parameter you are sure exists on your release but is not listed, use zabbix_raw_api_call.
searchWildcardsEnabledNoIf true, enable * and ? wildcards in search patterns.

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed10 schema fields changedv1.42.2
    • addedInput schema / additionalProperties
      Added value: +false
    • changedInput schema / properties / extra_params / anyOf
      Previous value: -[
      -  {
      -    "additionalProperties": true,
      -    "type": "object"
      -  },
      -  {
      -    "type": "null"
      -  }
      -]New value: +[
      +  {
      +    "propertyNames": {
      +      "enum": [
      +        "excludeSearch",
      +        "preservekeys",
      +        "startSearch",
      +        "selectExpressions"
      +      ]
      +    },
      +    "type": "object"
      +  },
      +  {
      +    "type": "null"
      +  }
      +]
    • changedInput schema / properties / filter / anyOf
      Previous value: -[
      -  {
      -    "additionalProperties": true,
      -    "type": "object"
      -  },
      -  {
      -    "type": "null"
      -  }
      -]New value: +[
      +  {
      +    "propertyNames": {
      +      "enum": [
      +        "name",
      +        "regexpid",
      +        "test_string"
      +      ]
      +    },
      +    "type": "object"
      +  },
      +  {
      +    "type": "null"
      +  }
      +]
    • changedInput schema / properties / output / anyOf
      Previous value: -[
      -  {
      -    "type": "string"
      -  },
      -  {
      -    "type": "null"
      -  }
      -]New value: +[
      +  {
      +    "enum": [
      +      "extend",
      +      "count"
      +    ],
      +    "type": "string"
      +  },
      +  {
      +    "items": {
      +      "enum": [
      +        "description",
      +        "name",
      +        "regexpid",
      +        "test_string"
      +      ],
      +      "type": "string"
      +    },
      +    "minItems": 1,
      +    "type": "array"
      +  },
      +  {
      +    "type": "null"
      +  }
      +]
    • changedInput schema / properties / output / description
      Previous value: -"Properties of the regexp object to return. Pass 'extend' for all, 'count' for the number of matches only, or a comma-separated list of property names. Default when omitted: regexpid, name. Properties: description (8.0+), name, regexpid, test_string."New value: +"Properties of the regexp object to return. Pass 'extend' for all, 'count' for the number of matches only, or a list of property names. Default when omitted: regexpid, name. Properties: description (8.0+), name, regexpid, test_string."
    • changedInput schema / properties / search / anyOf
      Previous value: -[
      -  {
      -    "additionalProperties": true,
      -    "type": "object"
      -  },
      -  {
      -    "type": "null"
      -  }
      -]New value: +[
      +  {
      +    "propertyNames": {
      +      "enum": [
      +        "description",
      +        "name",
      +        "test_string"
      +      ]
      +    },
      +    "type": "object"
      +  },
      +  {
      +    "type": "null"
      +  }
      +]
    • changedInput schema / properties / sortfield / anyOf
      Previous value: -[
      -  {
      -    "type": "string"
      -  },
      -  {
      -    "type": "null"
      -  }
      -]New value: +[
      +  {
      +    "enum": [
      +      "regexpid",
      +      "name"
      +    ],
      +    "type": "string"
      +  },
      +  {
      +    "items": {
      +      "enum": [
      +        "regexpid",
      +        "name"
      +      ],
      +      "type": "string"
      +    },
      +    "minItems": 1,
      +    "type": "array"
      +  },
      +  {
      +    "type": "null"
      +  }
      +]
    • changedInput schema / properties / sortfield / description
      Previous value: -"Sort by one or more of: regexpid, name (comma-separated for several; pair with 'sortorder'). No other property is sortable."New value: +"Sort by one or more of: regexpid, name (a list for several; pair with 'sortorder'). No other property is sortable."
    • changedInput schema / properties / sortorder / anyOf
      Previous value: -[
      -  {
      -    "type": "string"
      -  },
      -  {
      -    "type": "null"
      -  }
      -]New value: +[
      +  {
      +    "enum": [
      +      "ASC",
      +      "DESC"
      +    ],
      +    "type": "string"
      +  },
      +  {
      +    "items": {
      +      "enum": [
      +        "ASC",
      +        "DESC"
      +      ],
      +      "type": "string"
      +    },
      +    "minItems": 1,
      +    "type": "array"
      +  },
      +  {
      +    "type": "null"
      +  }
      +]
    • changedOutput schema / (root)
      Previous value: -{
      -  "properties": {
      -    "result": {
      -      "title": "Result",
      -      "type": "string"
      -    }
      -  },
      -  "required": [
      -    "result"
      -  ],
      -  "title": "regexp_getOutput",
      -  "type": "object"
      -}New value: +null
  2. First observedv1.41.0

TDQS

B3.4/5.0
Behavior3/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already declare readOnlyHint=true and openWorldHint=false, so the safety profile is covered and the description need not restate it. The description adds useful domain behavior (regexps can contain multiple test expressions with different match types, and expressions are only returned when selectExpressions is set). It says nothing about default return shape, ordering defaults, or limits — gaps that are real but modest given the annotations.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Four sentences, front-loaded with the verb and resource, then domain context, then the selectExpressions hint. No filler or repetition, though the middle sentence about match types is background knowledge rather than actionable instruction.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

With 13 optional parameters and no output schema, the description should say more about what a returned regexp object looks like and that output defaults to regexpid/name (which the schema does cover). Annotations carry the safety profile and the schema carries parameter detail, so nothing critical is missing, but the description doesn't fully frame the response an agent will receive.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, so the schema already explains every one of the 13 parameters, including filter/search/output/sort semantics. The description contributes only one hint — that selectExpressions controls inclusion of test expressions — which is the single piece of meaning not obvious from the schema's nested extra_params enum. Baseline 3 is appropriate.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

States a specific verb and resource ('Retrieve global regular expressions') and then explains what those objects are used for (LLD rules, trigger expressions), which lets an agent distinguish it from sibling read tools like trigger_get or drule_get. It falls short of 5 only because the differentiation is contextual rather than an explicit contrast with a named alternative.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Usage is implied by the domain explanation — an agent can infer this is the tool for listing named regexps before editing them or inspecting LLD filters. There is no explicit when-to-use/when-not guidance, no mention of pagination or result-size limits, and no routing to a sibling tool for related tasks.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.