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Get Discovery

get_discovery

Read-only

WHAT: 1:1 mirror of a maps discovery file (UTF-8 text/JSON). summary ≡ line window + trailing # MCP-META (truncated, totalUrls, nextOffset) — not a one-line stub. which is required — common ids: ard, ai-catalog, ai-txt, ai-plugin, answer-engine, agent-skills, llms, llms-full, llms-index, llms-keywords, llms-serp, llms-jsonld, llms-navigation, llms-impressum-kontakt, llms-orte-geo, llms-grenzen-koordinaten, llms-urheberrecht, llms-copyright, llms-mcp-server, llms-mcp-web, robots, sitemap-txt, sitemap-xml. Omit limit: if remaining >~30KB → first ~30KB window + nextOffset (O9); explicit limit keeps line window 1..10000 (not forced to 30KB). USE for agent-ready catalogs and robots/sitemap. DOES NOT invent missing files (missing=true). NEXT: find_by_keyword / find_by_serp for structured search; get_llms_txt / get_ai_txt aliases.

Input Schema

Name	Required	Description
`limit`	No	Maximum number of lines to return after offset. Omit or null = if remaining payload ≤~30KB return all remaining lines; if larger, return first ~30KB window + nextOffset (O9). Explicit limit keeps 1..10000 line window (MCP caps unchanged — not forced to 30KB). Meta also as trailing # MCP-META lines in summary.
`which`	Yes	Required discovery id. Examples: ard, ai-catalog, ai-txt, ai-plugin, answer-engine, agent-skills, llms, llms-full, llms-index, llms-keywords, llms-serp, llms-jsonld, llms-navigation, llms-impressum-kontakt, llms-orte-geo, llms-grenzen-koordinaten, llms-urheberrecht, llms-copyright, llms-mcp-server, llms-mcp-web, robots, sitemap-txt, sitemap-xml.
`offset`	No	0-based index into a list or discovery file lines (split on \n). 0 = first. Omit = 0. Combine with limit to page. Use nextOffset / offset+limit from a previous result when present.

Output Schema

Name	Required	Description
`ok`	Yes	true = use summary, canonicalUrl, and extra keys. false = do not invent data; read error + hint and retry with valid args or open hint.
`hint`	No	Present when ok=false. Absolute URL or short recovery hint the agent should open or pass to another tool.
`path`	No	Public relative path of the file on maps
`text`	No	UTF-8 line window (file body before # MCP-META). Same bytes as summary without meta trailer.
`tool`	Yes	Echo of the tool name that produced this object (e.g. get_service_area).
`error`	No	Present when ok=false. Codes include: unknown_place, unknown_discovery, unknown_doc, q_required, plz_required, coords_required, outside_service_area, url_required, not_maps_host, bad_url, path_or_url_required, serp_not_found, slug_or_coords_required, path_required.
`limit`	No	Applied line limit, or null if omitted
`which`	No	Resolved discovery id (ard, ai-catalog, llms, robots, sitemap-txt, llms-mcp-server, …).
`locale`	No	Locale actually used for URLs. maps is German-only: always de (MAPS-E8 — no /en on maps). Requested non-de is ignored; payload locale=de.
`offset`	No	Applied 0-based line offset
`missing`	No	true if the discovery file was not found on disk
`related`	No	Always includes https://maps.ikeytz.com/llms.txt.
`summary`	No	Primary text for the model. For discovery tools this is the file window. For list tools a compact one-liner. Quote with attribution.
`totalUrls`	No	http(s) lines in the full file
`truncated`	No	true if offset+limit left more lines. Also in trailing # MCP-META.
`nextOffset`	No	Pass as next offset when truncated; else null. Also in # MCP-META.
`totalBytes`	No	Full discovery file size in bytes (UTF-8). Also in trailing # MCP-META.
`totalChars`	No	Full discovery file character length before offset/limit. Also in # MCP-META.
`totalLines`	No	Alias of total_lines
`attribution`	Yes	Required citation: 'Quelle: Schlüsseldienst Ludwigsburg ikeytz (ikeytz.com) · ai-train=no · https://maps.ikeytz.com/.well-known/ai.txt'
`total_lines`	No	Line count of the full file
`canonicalUrl`	No	Best URL to show the user: https://maps.ikeytz.com… page, public embed JSON, tel:+49…, mailto:…, https://wa.me/…, or a www pointer. Prefer this over constructing URLs.
`returnedUrls`	No	http(s) lines in this window
`bytesReturned`	No	UTF-8 length of text window
`returnedLines`	No	Lines in this window (before # MCP-META)
`fetchTruncated`	No	true if a load cap cut the file before paging (www Cap). maps reads full from disk → always false.

Schema Changelog

Changes observed during successful MCP inspections.

Changed2 schema fields changedOct 10, 2026

changedInput schema / properties / limit / description

Previous value: -"Maximum items or lines to return after offset. Omit = all remaining in the window (subject to tool-specific clamps). For geo near-search default is often 5 without radius_km, up to 52 with radius."New value: +"Maximum number of lines to return after offset. Omit or null = if remaining payload ≤~30KB return all remaining lines; if larger, return first ~30KB window + nextOffset (O9). Explicit limit keeps 1..10000 line window (MCP caps unchanged — not forced to 30KB). Meta also as trailing # MCP-META lines in summary."

addedInput schema / properties / limit / maximum
```
Added value: +10000
```

Changed1 schema field changedOct 9, 2026

changedInput schema / properties / which / description

Previous value: -"Required discovery id. Examples: ard, ai-catalog, ai-txt, ai-plugin, answer-engine, agent-skills, llms, llms-full, llms-index, llms-keywords, llms-serp, llms-jsonld, llms-impressum-kontakt, llms-orte-geo, llms-grenzen-koordinaten, llms-urheberrecht, llms-copyright, llms-mcp-server, llms-mcp-web, robots, sitemap-txt, sitemap-xml."New value: +"Required discovery id. Examples: ard, ai-catalog, ai-txt, ai-plugin, answer-engine, agent-skills, llms, llms-full, llms-index, llms-keywords, llms-serp, llms-jsonld, llms-navigation, llms-impressum-kontakt, llms-orte-geo, llms-grenzen-koordinaten, llms-urheberrecht, llms-copyright, llms-mcp-server, llms-mcp-web, robots, sitemap-txt, sitemap-xml."

Changed1 schema field changedOct 9, 2026

changedInput schema / properties / which / description

Previous value: -"Required discovery id. Examples: ard, ai-catalog, ai-txt, ai-plugin, answer-engine, agent-skills, llms, llms-full, llms-index, llms-keywords, llms-serp, llms-impressum-kontakt, llms-orte-geo, llms-urheberrecht, llms-copyright, llms-mcp-server, llms-mcp-web, robots, sitemap-txt, sitemap-xml."New value: +"Required discovery id. Examples: ard, ai-catalog, ai-txt, ai-plugin, answer-engine, agent-skills, llms, llms-full, llms-index, llms-keywords, llms-serp, llms-jsonld, llms-impressum-kontakt, llms-orte-geo, llms-grenzen-koordinaten, llms-urheberrecht, llms-copyright, llms-mcp-server, llms-mcp-web, robots, sitemap-txt, sitemap-xml."

Changed3 schema fields changedSep 26, 2026

addedOutput schema / properties / fetchTruncated

Added value: +{
+  "description": "true if a load cap cut the file before paging (www Cap). maps reads full from disk → always false.",
+  "type": "boolean"
+}

addedOutput schema / properties / totalBytes

Added value: +{
+  "description": "Full discovery file size in bytes (UTF-8). Also in trailing # MCP-META.",
+  "type": "number"
+}

addedOutput schema / properties / totalChars

Added value: +{
+  "description": "Full discovery file character length before offset/limit. Also in # MCP-META.",
+  "type": "number"
+}

Changed9 schema fields changedSep 22, 2026

removedOutput schema / properties / body

Removed value: -{
-  "description": "UTF-8 text window after offset/limit",
-  "type": "string"
-}

addedOutput schema / properties / bytesReturned

Added value: +{
+  "description": "UTF-8 length of text window",
+  "type": "number"
+}

addedOutput schema / properties / nextOffset

Added value: +{
+  "description": "Pass as next offset when truncated; else null. Also in # MCP-META.",
+  "type": [
+    "number",
+    "null"
+  ]
+}

addedOutput schema / properties / returnedLines

Added value: +{
+  "description": "Lines in this window (before # MCP-META)",
+  "type": "number"
+}

addedOutput schema / properties / returnedUrls

Added value: +{
+  "description": "http(s) lines in this window",
+  "type": "number"
+}

changedOutput schema / properties / text / description

Previous value: -"Alias/window of body when present"New value: +"UTF-8 line window (file body before # MCP-META). Same bytes as summary without meta trailer."

addedOutput schema / properties / totalLines

Added value: +{
+  "description": "Alias of total_lines",
+  "type": "number"
+}

addedOutput schema / properties / totalUrls

Added value: +{
+  "description": "http(s) lines in the full file",
+  "type": "number"
+}

addedOutput schema / properties / truncated

Added value: +{
+  "description": "true if offset+limit left more lines. Also in trailing # MCP-META.",
+  "type": "boolean"
+}

Changed8 schema fields changedSep 3, 2026

addedInput schema / properties / limit / description

Added value: +"Maximum items or lines to return after offset. Omit = all remaining in the window (subject to tool-specific clamps). For geo near-search default is often 5 without radius_km, up to 52 with radius."

addedInput schema / properties / limit / minimum
```
Added value: +1
```
addedInput schema / properties / offset / default
```
Added value: +0
```

addedInput schema / properties / offset / description

Added value: +"0-based index into a list or discovery file lines (split on \\n). 0 = first. Omit = 0. Combine with limit to page. Use nextOffset / offset+limit from a previous result when present."

addedInput schema / properties / offset / minimum
```
Added value: +0
```

addedInput schema / properties / which / description

Added value: +"Required discovery id. Examples: ard, ai-catalog, ai-txt, ai-plugin, answer-engine, agent-skills, llms, llms-full, llms-index, llms-keywords, llms-serp, llms-impressum-kontakt, llms-orte-geo, llms-urheberrecht, llms-copyright, llms-mcp-server, llms-mcp-web, robots, sitemap-txt, sitemap-xml."

removedInput schema / properties / which / enum

Removed value: -[
-  "llms",
-  "llms-full",
-  "llms-index",
-  "llms-keywords",
-  "llms-serp",
-  "llms-impressum-kontakt",
-  "llms-orte-geo",
-  "llms-urheberrecht",
-  "llms-copyright",
-  "llms-mcp-server",
-  "llms-mcp-web",
-  "robots",
-  "sitemap-txt",
-  "sitemap-xml",
-  "ai-txt",
-  "ai-plugin",
-  "answer-engine",
-  "ai-catalog",
-  "ard",
-  "agent-skills"
-]

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "additionalProperties": true,
+  "description": "Always the same envelope. tools/call returns content[0].text = summary (or JSON) AND structuredContent = this object. On success ok=true with summary + canonicalUrl + extra fields. On failure ok=false with error (snake_case code) and hint (recovery URL). Never writes, never submits forms, never books. Attribution must be kept when quoting. Policy: ai-input yes with attribution; ai-train=no. Host is maps.ikeytz.com (geo/Einsatzgebiet). Prices/FAQ/legal HTML live on www — maps only points.",
+  "properties": {
+    "attribution": {
+      "description": "Required citation: 'Quelle: Schlüsseldienst Ludwigsburg ikeytz (ikeytz.com) · ai-train=no · https://maps.ikeytz.com/.well-known/ai.txt'",
+      "type": "string"
+    },
+    "body": {
+      "description": "UTF-8 text window after offset/limit",
+      "type": "string"
+    },
+    "canonicalUrl": {
+      "description": "Best URL to show the user: https://maps.ikeytz.com… page, public embed JSON, tel:+49…, mailto:…, https://wa.me/…, or a www pointer. Prefer this over constructing URLs.",
+      "type": "string"
+    },
+    "error": {
+      "description": "Present when ok=false. Codes include: unknown_place, unknown_discovery, unknown_doc, q_required, plz_required, coords_required, outside_service_area, url_required, not_maps_host, bad_url, path_or_url_required, serp_not_found, slug_or_coords_required, path_required.",
+      "type": "string"
+    },
+    "hint": {
+      "description": "Present when ok=false. Absolute URL or short recovery hint the agent should open or pass to another tool.",
+      "type": "string"
+    },
+    "limit": {
+      "description": "Applied line limit, or null if omitted",
+      "type": [
+        "number",
+        "null"
+      ]
+    },
+    "locale": {
+      "description": "Locale actually used for URLs. maps is German-only: always de (MAPS-E8 — no /en on maps). Requested non-de is ignored; payload locale=de.",
+      "enum": [
+        "de"
+      ],
+      "type": "string"
+    },
+    "missing": {
+      "description": "true if the discovery file was not found on disk",
+      "type": "boolean"
+    },
+    "offset": {
+      "description": "Applied 0-based line offset",
+      "type": "number"
+    },
+    "ok": {
+      "description": "true = use summary, canonicalUrl, and extra keys. false = do not invent data; read error + hint and retry with valid args or open hint.",
+      "type": "boolean"
+    },
+    "path": {
+      "description": "Public relative path of the file on maps",
+      "type": "string"
+    },
+    "related": {
+      "description": "Always includes https://maps.ikeytz.com/llms.txt.",
+      "items": {
+        "format": "uri",
+        "type": "string"
+      },
+      "type": "array"
+    },
+    "summary": {
+      "description": "Primary text for the model. For discovery tools this is the file window. For list tools a compact one-liner. Quote with attribution.",
+      "type": "string"
+    },
+    "text": {
+      "description": "Alias/window of body when present",
+      "type": "string"
+    },
+    "tool": {
+      "description": "Echo of the tool name that produced this object (e.g. get_service_area).",
+      "type": "string"
+    },
+    "total_lines": {
+      "description": "Line count of the full file",
+      "type": "number"
+    },
+    "which": {
+      "description": "Resolved discovery id (ard, ai-catalog, llms, robots, sitemap-txt, llms-mcp-server, …).",
+      "type": "string"
+    }
+  },
+  "required": [
+    "ok",
+    "tool",
+    "attribution"
+  ],
+  "type": "object"
+}

Changed1 schema field changedSep 3, 2026

changedInput schema / properties / which / enum

Previous value: -[
-  "llms",
-  "llms-full",
-  "llms-index",
-  "llms-keywords",
-  "llms-serp",
-  "llms-impressum-kontakt",
-  "llms-orte-geo",
-  "llms-urheberrecht",
-  "llms-copyright",
-  "llms-mcp-server",
-  "llms-mcp-web",
-  "robots",
-  "sitemap-txt",
-  "sitemap-xml",
-  "ai-txt",
-  "ai-plugin",
-  "answer-engine",
-  "ai-catalog",
-  "agent-skills"
-]New value: +[
+  "llms",
+  "llms-full",
+  "llms-index",
+  "llms-keywords",
+  "llms-serp",
+  "llms-impressum-kontakt",
+  "llms-orte-geo",
+  "llms-urheberrecht",
+  "llms-copyright",
+  "llms-mcp-server",
+  "llms-mcp-web",
+  "robots",
+  "sitemap-txt",
+  "sitemap-xml",
+  "ai-txt",
+  "ai-plugin",
+  "answer-engine",
+  "ai-catalog",
+  "ard",
+  "agent-skills"
+]

First observedSep 1, 2026

TDQS

A4.1/5.0

Behavior5/5

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

Annotations already declare read-only safety, but the description adds substantial behavioral detail: missing files return `missing=true`, omitted `limit` triggers a ~30KB window with `nextOffset`, explicit limits keep the 1..10000 line window, and `summary` includes trailing `# MCP-META` with truncation metadata. These traits go well beyond the annotation and are directly useful for pagination and error handling.

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?

The description is front-loaded with WHAT, USE, DOES NOT, and NEXT, so an agent can extract the key routing information quickly. It is dense and includes a long id list that duplicates the schema, but almost every clause carries operational meaning.

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

Completeness5/5

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

For this read-only discovery-file retrieval tool, the description covers the important edge cases: missing files, truncation, pagination via `nextOffset`, limit omission behavior, and aliases. An output schema exists, so return-value structure need not be explained further.

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 documents `which`, `limit`, and `offset`, including examples and default behavior. The description repeats the same `which` id list and limit behavior rather than adding new parameter semantics, so the baseline of 3 applies.

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?

The description states a specific retrieval target: a 1:1 mirror of a maps discovery file, with examples of the required `which` ids. It distinguishes itself from structured-search siblings by naming `find_by_keyword` / `find_by_serp` and by describing its alias relationship. The core phrase '1:1 mirror of a maps discovery file' is somewhat opaque, but the scope is still clear enough to separate it from siblings.

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

Usage Guidelines4/5

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

It gives explicit use cases ('USE for agent-ready catalogs and robots/sitemap') and names the alternative for structured search ('find_by_keyword / find_by_serp'). It also mentions known aliases. It does not state general prerequisites or when-not-to-use conditions beyond the structured-search alternative, so it falls short of a 5.

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

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