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list_recent_generations

Read-onlyIdempotent

List your recent successful generations and return their download URLs again. Use this to recover a generation whose result message was lost (for example a dropped connection mid-call): generations are billed when they complete, and their downloads stay available until their original expiry even if the response never arrived; re-listing does not extend the expiry. Generations made on the logospell.com generate page appear here too. Returns an index, newest first and a page at a time (limit and offset; total says how many there are): each generation's id, tool, creation and expiry times, zip download URL, its style (sets) or prompt (illustrations), its image count, whether it can be edited, and its set lineage. For a generation's full record (the original call as promptJSON, its style-reference sources and its current delivery settings), for example to extend or reproduce a set, pass its id to get_generations. Costs no credits.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
limitNoMaximum number of generations to return (default 5). With offset it pages through your generations, newest first; total in the output says how many there are. To fetch generations whose ids you know, use get_generations.
offsetNoHow many of the newest generations to skip before returning up to limit of them (default 0), for paging: the two oldest of total generations are limit 2 at offset total minus 2.

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
totalYesHow many unexpired generations this key has in all. More than offset plus the rows returned means there are more to page through with offset.
generationsYesRecent successful generations, newest first.

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed18 schema fields changed
    • changedInput schema / properties / limit / description
      Previous value: -"Maximum number of recent generations to return (default 5). There is no ceiling: pass a large number to list everything, and read total in the output to know whether anything was left out."New value: +"Maximum number of generations to return (default 5). With offset it pages through your generations, newest first; total in the output says how many there are. To fetch generations whose ids you know, use get_generations."
    • addedInput schema / properties / offset
      Added value: +{
      +  "description": "How many of the newest generations to skip before returning up to limit of them (default 0), for paging: the two oldest of total generations are limit 2 at offset total minus 2.",
      +  "type": "integer"
      +}
    • addedOutput schema / properties / generations / description
      Added value: +"Recent successful generations, newest first."
    • changedOutput schema / properties / generations / items / properties / edited / description
      Previous value: -"True when edit_image_set has changed this set's delivery from what was generated; a reset makes it false again."New value: +"True when edit_image_set has changed this set's delivery from what was generated."
    • changedOutput schema / properties / generations / items / properties / iconCeiling / description
      Previous value: -"The largest base size, in pixels, at which export_icons keeps every density of this set crisp (no subject enlarged past its source pixels) at its current levers; absent when no base size does. Fixed by the subject count at generation; edits to margin or sizing move it."New value: +"The largest base size, in pixels, at which export_icons keeps every density of this set crisp; absent when no base size does."
    • changedOutput schema / properties / generations / items / properties / id / description
      Previous value: -"The generation's id - the random segment of its download URLs, accepted by create_reference's sourceGeneration."New value: +"The generation's id: the random segment of its download URLs, accepted by get_generations, delete_generations, edit_image_set, export_icons and create_reference's sourceGeneration."
    • addedOutput schema / properties / generations / items / properties / images
      Added value: +{
      +  "description": "How many images it delivered.",
      +  "type": "integer"
      +}
    • removedOutput schema / properties / generations / items / properties / levers
      Removed value: -{
      -  "additionalProperties": false,
      -  "description": "The delivery levers now in force for a set (width, height, minimumMargin, format, quality, background): the first delivery's until edit_image_set changes them. Absent on illustrations and on sets from before editing existed.",
      -  "properties": {
      -    "background": {
      -      "type": "string"
      -    },
      -    "canvas": {
      -      "type": "string"
      -    },
      -    "format": {
      -      "type": "string"
      -    },
      -    "height": {
      -      "type": "integer"
      -    },
      -    "minimumMargin": {
      -      "type": "integer"
      -    },
      -    "quality": {
      -      "type": "integer"
      -    },
      -    "sizing": {
      -      "type": "string"
      -    },
      -    "width": {
      -      "type": "integer"
      -    }
      -  },
      -  "required": [
      -    "minimumMargin",
      -    "format"
      -  ],
      -  "type": [
      -    "null",
      -    "object"
      -  ]
      -}
    • removedOutput schema / properties / generations / items / properties / nativeHeight
      Removed value: -{
      -  "type": "integer"
      -}
    • removedOutput schema / properties / generations / items / properties / nativeWidth
      Removed value: -{
      -  "description": "The canvas this set would be delivered on at native size (its trimmed frame plus margin): the size any re-delivery compares against.",
      -  "type": "integer"
      -}
    • changedOutput schema / properties / generations / items / properties / parents / description
      Previous value: -"Ids of the generations whose delivered images seeded this one's style references - the set lineage. Absent when this generation extended nothing."New value: +"Ids of the generations whose delivered images seeded this one's style references: the set lineage, for gathering a whole set's ids."
    • addedOutput schema / properties / generations / items / properties / prompt
      Added value: +{
      +  "description": "An illustration's prompt, as written; absent for sets.",
      +  "type": "string"
      +}
    • removedOutput schema / properties / generations / items / properties / promptJSON
      Removed value: -{
      -  "description": "The batch's own prompt.json, verbatim - the same bytes that ship inside the zip. Its style, subjects and styleReferences are the original call and no edit can change them; its delivery levers (width, height, canvas, minimumMargin, format, quality, background) are the batch's current delivery, which edit_image_set rewrites, so reusing this reproduces the set as it stands now rather than as first delivered. The edited flag says whether that has happened. Its shape follows the tool named in its own tool field. Sets carry style, subjects as {description, filename} pairs, format, quality, minimumMargin, validation, width and height when an axis was fixed, background for solid-background sets, and styleReferences as zip-relative paths when the call used them. Illustrations carry prompt, width, height, format, quality and filename. Read subjects[].description to reproduce a set: a subject given in object form has a description that differs from its filename, so search.webp may have been asked for as a magnifying glass."
      -}
    • addedOutput schema / properties / generations / items / properties / style
      Added value: +{
      +  "description": "The style a set was generated with, as written; absent for illustrations and for sets styled by reference images alone.",
      +  "type": "string"
      +}
    • removedOutput schema / properties / generations / items / properties / styleReferences
      Removed value: -{
      -  "description": "The style references this generation was made with, in call order, each identified by the delivered image it came from when known, and reusable via create_reference. Distinct from promptJSON.styleReferences, which records the same references as zip-relative paths inside the original call. Absent when no references were used.",
      -  "items": {
      -    "additionalProperties": false,
      -    "properties": {
      -      "from": {
      -        "description": "The generation id this reference image came from; accepted by create_reference's sourceGeneration.",
      -        "type": "string"
      -      },
      -      "image": {
      -        "description": "The delivered image filename inside that generation; accepted by create_reference's sourceImage.",
      -        "type": "string"
      -      },
      -      "uploaded": {
      -        "description": "True for a hand-uploaded reference that came from no generation.",
      -        "type": "boolean"
      -      }
      -    },
      -    "type": "object"
      -  },
      -  "type": [
      -    "null",
      -    "array"
      -  ]
      -}
    • addedOutput schema / properties / generations / items / properties / tool
      Added value: +{
      +  "description": "The tool that made it.",
      +  "type": "string"
      +}
    • changedOutput schema / properties / generations / items / required
      Previous value: -[
      -  "id",
      -  "created",
      -  "expiresAt",
      -  "zipURL",
      -  "promptJSON"
      -]New value: +[
      +  "id",
      +  "tool",
      +  "created",
      +  "expiresAt",
      +  "zipURL",
      +  "images"
      +]
    • changedOutput schema / properties / total / description
      Previous value: -"How many unexpired generations this key has in all. Greater than the number of rows returned means the listing was cut short by limit; ask again with a larger limit."New value: +"How many unexpired generations this key has in all. More than offset plus the rows returned means there are more to page through with offset."
  2. Changed1 schema field changed
    • changedOutput schema / properties / generations / items / properties / promptJSON / description
      Previous value: -"The original call, verbatim, exactly as the batch's own prompt.json records it - the same bytes that ship inside the zip. Its shape follows the tool named in its own tool field. Sets carry style, subjects as {description, filename} pairs, format, quality, minimumMargin, validation, width and height when an axis was fixed, background for solid-background sets, and styleReferences as zip-relative paths when the call used them. Illustrations carry prompt, width, height, format, quality and filename. Read subjects[].description to reproduce a set: a subject given in object form has a description that differs from its filename, so search.webp may have been asked for as a magnifying glass."New value: +"The batch's own prompt.json, verbatim - the same bytes that ship inside the zip. Its style, subjects and styleReferences are the original call and no edit can change them; its delivery levers (width, height, canvas, minimumMargin, format, quality, background) are the batch's current delivery, which edit_image_set rewrites, so reusing this reproduces the set as it stands now rather than as first delivered. The edited flag says whether that has happened. Its shape follows the tool named in its own tool field. Sets carry style, subjects as {description, filename} pairs, format, quality, minimumMargin, validation, width and height when an axis was fixed, background for solid-background sets, and styleReferences as zip-relative paths when the call used them. Illustrations carry prompt, width, height, format, quality and filename. Read subjects[].description to reproduce a set: a subject given in object form has a description that differs from its filename, so search.webp may have been asked for as a magnifying glass."
  3. Changed8 schema fields changed
    • addedOutput schema / properties / generations / items / properties / deliveredAt
      Added value: +{
      +  "description": "When the current delivery was cut: the generation time, or the time of the last edit_image_set.",
      +  "type": "string"
      +}
    • addedOutput schema / properties / generations / items / properties / editable
      Added value: +{
      +  "description": "True when this set can be re-delivered with edit_image_set (it has a source to cut from).",
      +  "type": "boolean"
      +}
    • addedOutput schema / properties / generations / items / properties / edited
      Added value: +{
      +  "description": "True when edit_image_set has changed this set's delivery from what was generated; a reset makes it false again.",
      +  "type": "boolean"
      +}
    • addedOutput schema / properties / generations / items / properties / iconCeiling
      Added value: +{
      +  "description": "The largest base size, in pixels, at which export_icons keeps every density of this set crisp (no subject enlarged past its source pixels) at its current levers; absent when no base size does. Fixed by the subject count at generation; edits to margin or sizing move it.",
      +  "type": "integer"
      +}
    • addedOutput schema / properties / generations / items / properties / levers
      Added value: +{
      +  "additionalProperties": false,
      +  "description": "The delivery levers now in force for a set (width, height, minimumMargin, format, quality, background): the first delivery's until edit_image_set changes them. Absent on illustrations and on sets from before editing existed.",
      +  "properties": {
      +    "background": {
      +      "type": "string"
      +    },
      +    "canvas": {
      +      "type": "string"
      +    },
      +    "format": {
      +      "type": "string"
      +    },
      +    "height": {
      +      "type": "integer"
      +    },
      +    "minimumMargin": {
      +      "type": "integer"
      +    },
      +    "quality": {
      +      "type": "integer"
      +    },
      +    "sizing": {
      +      "type": "string"
      +    },
      +    "width": {
      +      "type": "integer"
      +    }
      +  },
      +  "required": [
      +    "minimumMargin",
      +    "format"
      +  ],
      +  "type": [
      +    "null",
      +    "object"
      +  ]
      +}
    • addedOutput schema / properties / generations / items / properties / nativeHeight
      Added value: +{
      +  "type": "integer"
      +}
    • addedOutput schema / properties / generations / items / properties / nativeWidth
      Added value: +{
      +  "description": "The canvas this set would be delivered on at native size (its trimmed frame plus margin): the size any re-delivery compares against.",
      +  "type": "integer"
      +}
    • changedOutput schema / properties / generations / items / properties / promptJSON / description
      Previous value: -"The original call, verbatim, exactly as the batch's own prompt.json records it - the same bytes that ship inside the zip. Its shape follows the tool named in its own tool field. Sets carry style, subjects as {description, filename} pairs, format, quality, minimumMargin, validation, size when one was requested, background for solid-background sets, and styleReferences as zip-relative paths when the call used them. Illustrations carry prompt, width, height, format, quality and filename. Read subjects[].description to reproduce a set: a subject given in object form has a description that differs from its filename, so search.webp may have been asked for as a magnifying glass."New value: +"The original call, verbatim, exactly as the batch's own prompt.json records it - the same bytes that ship inside the zip. Its shape follows the tool named in its own tool field. Sets carry style, subjects as {description, filename} pairs, format, quality, minimumMargin, validation, width and height when an axis was fixed, background for solid-background sets, and styleReferences as zip-relative paths when the call used them. Illustrations carry prompt, width, height, format, quality and filename. Read subjects[].description to reproduce a set: a subject given in object form has a description that differs from its filename, so search.webp may have been asked for as a magnifying glass."
  4. Changed7 schema fields changed
    • removedOutput schema / properties / generations / items / properties / images
      Removed value: -{
      -  "type": "integer"
      -}
    • removedOutput schema / properties / generations / items / properties / names
      Removed value: -{
      -  "items": {
      -    "type": "string"
      -  },
      -  "type": [
      -    "null",
      -    "array"
      -  ]
      -}
    • addedOutput schema / properties / generations / items / properties / promptJSON
      Added value: +{
      +  "description": "The original call, verbatim, exactly as the batch's own prompt.json records it - the same bytes that ship inside the zip. Its shape follows the tool named in its own tool field. Sets carry style, subjects as {description, filename} pairs, format, quality, minimumMargin, validation, size when one was requested, background for solid-background sets, and styleReferences as zip-relative paths when the call used them. Illustrations carry prompt, width, height, format, quality and filename. Read subjects[].description to reproduce a set: a subject given in object form has a description that differs from its filename, so search.webp may have been asked for as a magnifying glass."
      +}
    • removedOutput schema / properties / generations / items / properties / style
      Removed value: -{
      -  "type": "string"
      -}
    • changedOutput schema / properties / generations / items / properties / styleReferences / description
      Previous value: -"The style references this generation was made with, in call order, each identified by the delivered image it came from when known. Absent when no references were used."New value: +"The style references this generation was made with, in call order, each identified by the delivered image it came from when known, and reusable via create_reference. Distinct from promptJSON.styleReferences, which records the same references as zip-relative paths inside the original call. Absent when no references were used."
    • removedOutput schema / properties / generations / items / properties / tool
      Removed value: -{
      -  "type": "string"
      -}
    • changedOutput schema / properties / generations / items / required
      Previous value: -[
      -  "id",
      -  "tool",
      -  "created",
      -  "expiresAt",
      -  "images",
      -  "zipURL"
      -]New value: +[
      +  "id",
      +  "created",
      +  "expiresAt",
      +  "zipURL",
      +  "promptJSON"
      +]
  5. Changed3 schema fields changed
    • changedInput schema / properties / limit / description
      Previous value: -"Maximum number of recent generations to return (default 5, max 20)."New value: +"Maximum number of recent generations to return (default 5). There is no ceiling: pass a large number to list everything, and read total in the output to know whether anything was left out."
    • addedOutput schema / properties / total
      Added value: +{
      +  "description": "How many unexpired generations this key has in all. Greater than the number of rows returned means the listing was cut short by limit; ask again with a larger limit.",
      +  "type": "integer"
      +}
    • changedOutput schema / required
      Previous value: -[
      -  "generations"
      -]New value: +[
      +  "generations",
      +  "total"
      +]
  6. Changed4 schema fields changed
    • addedOutput schema / properties / generations / items / properties / id
      Added value: +{
      +  "description": "The generation's id - the random segment of its download URLs, accepted by create_reference's sourceGeneration.",
      +  "type": "string"
      +}
    • addedOutput schema / properties / generations / items / properties / parents
      Added value: +{
      +  "description": "Ids of the generations whose delivered images seeded this one's style references - the set lineage. Absent when this generation extended nothing.",
      +  "items": {
      +    "type": "string"
      +  },
      +  "type": [
      +    "null",
      +    "array"
      +  ]
      +}
    • addedOutput schema / properties / generations / items / properties / styleReferences
      Added value: +{
      +  "description": "The style references this generation was made with, in call order, each identified by the delivered image it came from when known. Absent when no references were used.",
      +  "items": {
      +    "additionalProperties": false,
      +    "properties": {
      +      "from": {
      +        "description": "The generation id this reference image came from; accepted by create_reference's sourceGeneration.",
      +        "type": "string"
      +      },
      +      "image": {
      +        "description": "The delivered image filename inside that generation; accepted by create_reference's sourceImage.",
      +        "type": "string"
      +      },
      +      "uploaded": {
      +        "description": "True for a hand-uploaded reference that came from no generation.",
      +        "type": "boolean"
      +      }
      +    },
      +    "type": "object"
      +  },
      +  "type": [
      +    "null",
      +    "array"
      +  ]
      +}
    • changedOutput schema / properties / generations / items / required
      Previous value: -[
      -  "tool",
      -  "created",
      -  "expiresAt",
      -  "images",
      -  "zipURL"
      -]New value: +[
      +  "id",
      +  "tool",
      +  "created",
      +  "expiresAt",
      +  "images",
      +  "zipURL"
      +]
  7. First observed

TDQS

A4.8/5.0
Behavior5/5

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

Annotations already declare readOnly/idempotent/non-destructive, and the description adds genuinely non-inferable behavior: generations are billed on completion, downloads persist until the original expiry even if the response never arrived, re-listing does NOT extend expiry, and the call costs no credits. That is exactly the context the annotations cannot carry.

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?

Front-loaded with purpose and the recovery use case; every sentence carries information. Slightly dense with nested parentheticals and repeats the expiry/download-URL point across sentences, which costs a little economy.

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?

Despite an output schema existing, the description covers the things an agent actually needs to decide and act: cost, expiry semantics, billing timing, paging, and the handoff to get_generations. Nothing material is missing for a read-only listing tool.

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

Parameters4/5

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

Schema coverage is 100% so the baseline is 3, but the description adds paging semantics (newest first, one page at a time, total reflects the full count) and a cross-reference to get_generations for id-based retrieval, which goes beyond the raw schema text.

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

Purpose5/5

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

States a specific verb and resource ('List your recent successful generations') plus the distinctive behavior of re-returning download URLs, which separates it from get_generations (full record by id) and the delete_* siblings. An agent can route correctly without opening the schema.

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

Usage Guidelines5/5

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

Gives explicit when-to-use ('recover a generation whose result message was lost, e.g. a dropped connection mid-call') and names the alternative for the full-record case ('pass its id to get_generations'). Also flags that logospell.com page generations appear here, which is a non-obvious inclusion rule.

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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