Skip to main content
Glama

List drafts

list_drafts
Read-onlyIdempotent

Retrieve unpublished Substack drafts ordered by recent edits, with paging, limits, sorting, and publication selection.

Instructions

List unpublished drafts, most recently edited first.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
limitNoHow many to return. 1 to 100, default 25.
offsetNoSkip this many, for paging.
order_byNodraft_updated_at
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.
order_directionNodesc

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

B3.3/5.0
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 elsewhere. The description adds only the default sort behaviour ('most recently edited first'); it says nothing about pagination caps, result size, or auth requirements.

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

Conciseness5/5

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

One short sentence, front-loaded with the resource and scoping, with zero redundant text. Nothing in it could be removed without losing information.

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?

For a read-only list tool with no output schema and annotation-covered safety, the description is minimally sufficient but leaves gaps: it never clarifies how drafts relate to scheduled posts or posts, and gives no hint about what a draft record contains or how paging behaves.

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 60% (limit, offset, publication documented; the two enums only have defaults), so the baseline of 3 applies. The description's 'most recently edited first' maps to the order_by/order_direction defaults but adds no syntax or format detail beyond the schema.

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 ('List unpublished drafts') plus the default ordering, so the agent knows exactly what set is returned. It does not differentiate itself from near-neighbours like list_posts or list_scheduled_posts, so it falls short of a 5.

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?

There is no when-to-use guidance, no exclusions, and no mention of alternatives such as list_scheduled_posts or list_posts, which an agent could easily confuse with unpublished drafts. Usage is only implied by the word 'drafts'.

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