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Meta Social Technologies MCP Server

Meta Social Technologies MCP Server

by inyogeshwar

publish_instagram_photo

Publish a photo post to an Instagram account using a public image URL, with an optional caption and hashtags included.

Instructions

Publish a photo post with caption and hashtags to Instagram account in.yogeshwar.

Input Schema

NameRequiredDescriptionDefault
captionNoCaption and hashtags for the post.
image_urlYesDirect public URL of the image (JPG/PNG).

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv1.0.0

TDQS

C2.9/5.0
Behavior2/5

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

With no annotations at all, the description carries the full behavioral burden and falls short: it does not say the post is publicly visible and hard to undo, whether publishing requires a specific token/permission, what happens on rate limits or duplicate content, or what the call returns. Only the implicit 'publish' mutation is conveyed.

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?

A single front-loaded sentence with no filler. The hardcoded account name is slightly unusual phrasing but is informative rather than wasteful.

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

Completeness2/5

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

For a mutation tool with zero annotations and no output schema, the description should at least signal return behavior (e.g., a media ID) and failure modes. It supplies neither, leaving the agent under-informed about the consequences of calling it.

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%, so both parameters are already documented in structured form; the description adds only that caption can include hashtags, which is marginal. 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 (publish) and resource (photo post) plus the target account (in.yogeshwar), which distinguishes it from publish_instagram_reel and the Facebook publishers by resource type. It never explicitly names those siblings, but the resource noun does the disambiguation work.

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 publish_instagram_reel or publish_facebook_photo, and no prerequisites stated (public image URL, account type, permissions). The agent must infer everything from the name.

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