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lanternrow

facebook-pages-mcp

by lanternrow

get_published_posts

Retrieve a paginated list of published posts from a Facebook page, including details like message, image, permalink, and share count.

Instructions

Retrieve a paginated list of posts published by the page, including message, image, permalink, shares, and type.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
afterNoPagination cursor for the next page of results.
limitNoNumber of posts to return (1-100, default 25).
page_idNoFacebook Page ID. Defaults to FB_PAGE_ID env var if omitted.
Behavior3/5

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

With no annotations, the description carries full burden. It discloses pagination behavior and the fields returned, but does not mention rate limits, authentication, or any side effects. It adds some context but lacks depth.

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?

Single sentence of 18 words, immediately states the action and scope. No waste, front-loaded, and efficient.

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?

Given no output schema and three simple parameters, the description covers the core functionality. It could mention ordering or that only published posts are included, but overall it is sufficient.

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 coverage is 100%, so the description does not need to add much to parameter meanings. It does not add detail beyond the schema, but lists output fields which is helpful. Baseline of 3 is appropriate.

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?

Description uses a specific verb (Retrieve) and resource (published posts) and lists included fields (message, image, permalink, shares, type). It clearly states what the tool does, though it does not explicitly differentiate from siblings like get_page_feed.

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 is provided on when to use this tool versus alternatives such as get_page_feed or get_post_insights. No exclusions or context about prerequisites are mentioned.

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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