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socialbridge-mcp

by io.github.IsaiahDupree
OverviewDiscussionsAdmin

Get an account's recent posts

social_posts
Read-onlyIdempotent

An account's recent posts / videos / tweets / threads / pins as the unified Post[] schema (id, url, author, text, createdAt, like/comment/share/view counts, mediaType, mediaUrls, hashtags), tagged with its platform. Keyless on Instagram, TikTok, YouTube, Pinterest, Snapchat, and Threads. Twitter/X, Reddit, and Facebook need operator-side credentials; LinkedIn is quarantined. For a keyless Reddit history pull use reddit_history.

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "platform": "<platform>",
      "username": "<username>"
    },
    "name": "social_posts"
  }
}

Input Schema

NameRequiredDescriptionDefault
limitNoMax results, clamped 1-100. Default 20.
cursorNoOpaque pagination cursor from a previous response (where the platform supports paging).
platformYesTarget social network.
usernameYesAccount handle / username (without @).

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observed

TDQS

A4.5/5.0
Behavior4/5

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

Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, so safety profile is covered. The description adds valuable context beyond annotations: platform-specific credential requirements, LinkedIn quarantine, and the unified output schema. It does not cover error handling or rate limits, so a 4 is appropriate rather than 5.

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?

The description is compact and information-dense, leading with the core function, then enumerating the output schema, keyless platforms, credential requirements, and a specific alternative in a few sentences. No redundant or filler content.

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

Completeness5/5

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

For a multi-platform read-only tool with complexity around credentials and output unification, the description is exceptionally complete. It explicitly describes the unified Post[] schema, lists which platforms require credentials, flags LinkedIn as quarantined, and even names the sibling tool for a specific use case. This gives an agent sufficient context to select and invoke the tool correctly.

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%, with all four parameters well-documented including the platform enum, username without '@', limit clamping, and cursor semantics. The description adds platform context that indirectly affects the 'platform' parameter but does not alter understanding of parameter syntax or formats, so the baseline 3 applies.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states it retrieves an account's recent posts across multiple platforms with a unified Post[] schema, listing exact fields. It distinguishes itself from sibling tools by explicitly naming reddit_history as an alternative for keyless Reddit pulls, and the title 'Get an account's recent posts' is specific.

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

Usage Guidelines5/5

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

The description explicitly states which platforms are keyless (Instagram, TikTok, YouTube, Pinterest, Snapchat, Threads) and which require operator-side credentials (Twitter/X, Reddit, Facebook), and notes LinkedIn is quarantined. It also directly recommends using reddit_history for keyless Reddit access, providing clear when-to-use and when-not-to-use guidance.

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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