get_highlighted_authorsList up to 50 public profiles of authors Synoptic features (isHighlighted), for discovery when no particular author is named. Not paginated. Use get_user or get_user_by_id for a known author.
| Name | Required | Description | Default |
|---|---|---|---|
No arguments | |||
| Name | Required | Description | Default |
|---|---|---|---|
| items | Yes |
Changes observed during successful MCP inspections.
Output schema / properties / items / items / properties / avatar / anyOfPrevious value: -[
- {
- "additionalProperties": false,
- "properties": {
- "bucket": {
- "description": "S3 bucket holding the image",
- "minLength": 1,
- "type": "string"
- },
- "height": {
- "anyOf": [
- {
- "exclusiveMinimum": 0,
- "type": "integer"
- },
- {
- "type": "null"
- }
- ],
- "description": "Height in pixels"
- },
- "key": {
- "description": "Storage key of the image",
- "minLength": 1,
- "type": "string"
- },
- "region": {
- "description": "AWS region of the bucket",
- "minLength": 1,
- "type": "string"
- },
- "type": {
- "description": "MIME type, such as image/png",
- "minLength": 1,
- "type": "string"
- },
- "width": {
- "anyOf": [
- {
- "exclusiveMinimum": 0,
- "type": "integer"
- },
- {
- "type": "null"
- }
- ],
- "description": "Width in pixels"
- }
- },
- "required": [
- "bucket",
- "key",
- "region",
- "type"
- ],
- "type": "object"
- },
- {
- "type": "null"
- }
-]New value: +[
+ {
+ "additionalProperties": false,
+ "properties": {
+ "bucket": {
+ "minLength": 1,
+ "type": "string"
+ },
+ "height": {
+ "anyOf": [
+ {
+ "exclusiveMinimum": 0,
+ "type": "integer"
+ },
+ {
+ "type": "null"
+ }
+ ]
+ },
+ "key": {
+ "minLength": 1,
+ "type": "string"
+ },
+ "region": {
+ "minLength": 1,
+ "type": "string"
+ },
+ "type": {
+ "description": "MIME type, such as image/png",
+ "minLength": 1,
+ "type": "string"
+ },
+ "width": {
+ "anyOf": [
+ {
+ "exclusiveMinimum": 0,
+ "type": "integer"
+ },
+ {
+ "type": "null"
+ }
+ ]
+ }
+ },
+ "required": [
+ "bucket",
+ "key",
+ "region",
+ "type"
+ ],
+ "type": "object"
+ },
+ {
+ "type": "null"
+ }
+]Output schema / properties / items / items / properties / backgroundImage / anyOfPrevious value: -[
- {
- "additionalProperties": false,
- "properties": {
- "bucket": {
- "description": "S3 bucket holding the image",
- "minLength": 1,
- "type": "string"
- },
- "height": {
- "anyOf": [
- {
- "exclusiveMinimum": 0,
- "type": "integer"
- },
- {
- "type": "null"
- }
- ],
- "description": "Height in pixels"
- },
- "key": {
- "description": "Storage key of the image",
- "minLength": 1,
- "type": "string"
- },
- "region": {
- "description": "AWS region of the bucket",
- "minLength": 1,
- "type": "string"
- },
- "type": {
- "description": "MIME type, such as image/png",
- "minLength": 1,
- "type": "string"
- },
- "width": {
- "anyOf": [
- {
- "exclusiveMinimum": 0,
- "type": "integer"
- },
- {
- "type": "null"
- }
- ],
- "description": "Width in pixels"
- }
- },
- "required": [
- "bucket",
- "key",
- "region",
- "type"
- ],
- "type": "object"
- },
- {
- "type": "null"
- }
-]New value: +[
+ {
+ "additionalProperties": false,
+ "properties": {
+ "bucket": {
+ "minLength": 1,
+ "type": "string"
+ },
+ "height": {
+ "anyOf": [
+ {
+ "exclusiveMinimum": 0,
+ "type": "integer"
+ },
+ {
+ "type": "null"
+ }
+ ]
+ },
+ "key": {
+ "minLength": 1,
+ "type": "string"
+ },
+ "region": {
+ "minLength": 1,
+ "type": "string"
+ },
+ "type": {
+ "description": "MIME type, such as image/png",
+ "minLength": 1,
+ "type": "string"
+ },
+ "width": {
+ "anyOf": [
+ {
+ "exclusiveMinimum": 0,
+ "type": "integer"
+ },
+ {
+ "type": "null"
+ }
+ ]
+ }
+ },
+ "required": [
+ "bucket",
+ "key",
+ "region",
+ "type"
+ ],
+ "type": "object"
+ },
+ {
+ "type": "null"
+ }
+]Output schema / properties / items / items / properties / avatar / anyOfPrevious value: -[
- {
- "additionalProperties": false,
- "properties": {
- "bucket": {
- "minLength": 1,
- "type": "string"
- },
- "height": {
- "anyOf": [
- {
- "exclusiveMinimum": 0,
- "type": "integer"
- },
- {
- "type": "null"
- }
- ]
- },
- "key": {
- "minLength": 1,
- "type": "string"
- },
- "region": {
- "minLength": 1,
- "type": "string"
- },
- "type": {
- "minLength": 1,
- "type": "string"
- },
- "width": {
- "anyOf": [
- {
- "exclusiveMinimum": 0,
- "type": "integer"
- },
- {
- "type": "null"
- }
- ]
- }
- },
- "required": [
- "bucket",
- "key",
- "region",
- "type"
- ],
- "type": "object"
- },
- {
- "type": "null"
- }
-]New value: +[
+ {
+ "additionalProperties": false,
+ "properties": {
+ "bucket": {
+ "description": "S3 bucket holding the image",
+ "minLength": 1,
+ "type": "string"
+ },
+ "height": {
+ "anyOf": [
+ {
+ "exclusiveMinimum": 0,
+ "type": "integer"
+ },
+ {
+ "type": "null"
+ }
+ ],
+ "description": "Height in pixels"
+ },
+ "key": {
+ "description": "Storage key of the image",
+ "minLength": 1,
+ "type": "string"
+ },
+ "region": {
+ "description": "AWS region of the bucket",
+ "minLength": 1,
+ "type": "string"
+ },
+ "type": {
+ "description": "MIME type, such as image/png",
+ "minLength": 1,
+ "type": "string"
+ },
+ "width": {
+ "anyOf": [
+ {
+ "exclusiveMinimum": 0,
+ "type": "integer"
+ },
+ {
+ "type": "null"
+ }
+ ],
+ "description": "Width in pixels"
+ }
+ },
+ "required": [
+ "bucket",
+ "key",
+ "region",
+ "type"
+ ],
+ "type": "object"
+ },
+ {
+ "type": "null"
+ }
+]Output schema / properties / items / items / properties / avatar / descriptionAdded value: +"Profile image; null when none is set"Output schema / properties / items / items / properties / backgroundImage / anyOfPrevious value: -[
- {
- "$ref": "#/properties/items/items/properties/avatar/anyOf/0"
- },
- {
- "type": "null"
- }
-]New value: +[
+ {
+ "additionalProperties": false,
+ "properties": {
+ "bucket": {
+ "description": "S3 bucket holding the image",
+ "minLength": 1,
+ "type": "string"
+ },
+ "height": {
+ "anyOf": [
+ {
+ "exclusiveMinimum": 0,
+ "type": "integer"
+ },
+ {
+ "type": "null"
+ }
+ ],
+ "description": "Height in pixels"
+ },
+ "key": {
+ "description": "Storage key of the image",
+ "minLength": 1,
+ "type": "string"
+ },
+ "region": {
+ "description": "AWS region of the bucket",
+ "minLength": 1,
+ "type": "string"
+ },
+ "type": {
+ "description": "MIME type, such as image/png",
+ "minLength": 1,
+ "type": "string"
+ },
+ "width": {
+ "anyOf": [
+ {
+ "exclusiveMinimum": 0,
+ "type": "integer"
+ },
+ {
+ "type": "null"
+ }
+ ],
+ "description": "Width in pixels"
+ }
+ },
+ "required": [
+ "bucket",
+ "key",
+ "region",
+ "type"
+ ],
+ "type": "object"
+ },
+ {
+ "type": "null"
+ }
+]Output schema / properties / items / items / properties / backgroundImage / descriptionAdded value: +"Profile background image; null when none is set"Output schema / properties / items / items / properties / followersCount / descriptionAdded value: +"Users following this user"Output schema / properties / items / items / properties / followingCount / descriptionAdded value: +"Users this user follows; excludes streams"Output schema / properties / items / items / properties / id / descriptionAdded value: +"Synoptic user ID for follow_user, is_following_user or get_user_by_id"Output schema / properties / items / items / properties / isHighlighted / descriptionAdded value: +"Featured by Synoptic; listed by get_highlighted_authors"Output schema / properties / items / items / properties / xComHandle / descriptionAdded value: +"Verified X handle linked to this profile, without @"Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnly/openWorld/idempotent/non-destructive, so safety is covered. The description adds genuinely new behavioral facts the annotations do not carry: a 50-item cap on results and that the endpoint is not paginated. This materially affects how an agent consumes the output.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Three short sentences: purpose first, then the 50-cap/non-pagination constraint, then the routing alternative. Every clause carries information and nothing is padded.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
An output schema exists, so return-value shape need not be explained. With no parameters, the annotations covering safety, and the description covering scope, cap, and pagination, an agent has everything needed to call it correctly.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The tool takes zero parameters, so there is nothing to document and the baseline of 4 applies. The description's note that filtering is by the fixed isHighlighted flag (not a caller input) appropriately frames the absence of arguments.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
States a specific verb (List) and resource (public profiles of authors Synoptic features, flagged isHighlighted) with a hard result cap. It explicitly distinguishes itself from get_user and get_user_by_id, so an agent can route without opening any sibling schema.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
Gives the exact condition for use ('for discovery when no particular author is named') and names the correct alternatives ('Use get_user or get_user_by_id for a known author'). When-to-use, when-not, and the replacement tools are all present.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Add one secure layer between your agents and this server.