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Read publication settings

get_publication_settings
Read-onlyIdempotent

Retrieve all settings for a connected Substack publication, including name, hero text, logo, cover, sender, theme colors, sections, welcome email, and podcast feed.

Instructions

Read the publication's full settings: name, hero text, logo, cover, sender name, theme colours, sections, welcome email, podcast feed and everything else on the settings page.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
publicationNoWhich connected publication to act on, matched loosely against its hostname (for example 'example.substack.com' or just 'example'). Defaults to the first connected publication.

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed2 schema fields changedv3.0.1
    • removedInput schema / $schema
      Removed value: -"http://json-schema.org/draft-07/schema#"
    • removedInput schema / additionalProperties
      Removed value: -false
  2. First observedv2.1.1

TDQS

B3.2/5.0
Behavior3/5

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

Annotations already declare readOnlyHint, idempotentHint, openWorldHint and destructiveHint=false, so the safety profile is fully covered. The description adds a useful completeness signal ('everything else on the settings page'), but discloses nothing about auth requirements, rate limits, or return format beyond the field list.

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?

One sentence, front-loaded with the verb and resource, and the field enumeration is informative rather than filler. It is slightly list-heavy but nothing is redundant.

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

Completeness4/5

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

There is no output schema, so the description correctly compensates by enumerating the returned settings, which is the key thing an agent needs. For a single-optional-parameter read tool whose annotations cover the safety profile, this is nearly complete.

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% and the single 'publication' parameter is fully documented in the schema, including loose hostname matching and the first-publication default. The description adds no parameter-level meaning, so the baseline 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?

States a specific verb ('Read') and resource ('publication's full settings') and enumerates the contents returned. It is clearly distinguishable from mutation siblings like update_publication_settings, though it never explicitly contrasts with the close sibling get_publication_info.

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

Usage Guidelines2/5

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

No guidance on when to use this versus alternatives such as get_publication_info or the sibling update tool. The only contextual note is the parameter default, which is schema-level information rather than usage guidance.

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