MerchSage MCP server

• Registry namecom.merchsage/sponsorsverified in the MCP registry

The registry name sits under merchsage.com. The registry only lets a publisher use that namespace after proving control of the domain through DNS or HTTP.

• Stateanswerschecked 2026-10-24
• Tools4
• Server calls itselfmerchsage-sponsors
• Server version1.30.0
• Protocol version2025-06-18

On 2026-10-24 the server answered initialize and tools/list without a sign-in. First answer in 552 ms.

• Its tools do none of the product's use cases we checked: turn a channel's themes and running jokes into merch designs; review and approve designs before any product goes live; sell channel-themed apparel and mugs to viewers without holding stock.
• Checked on 3 of the 7 days it takes to judge reliability.

Said by rules from the measurements above. The likely first call is a model's pick from the tool list; read its description before relying on it.

• INITE MCP scoreafter a weeka score needs 7 daily checks: 3 so far
• What an agent can do with it0 of 3 use cases
• Answeredmeasuring3 of the 7 daily checks it takes to print a share
• Median first answer534 ms
• Space in an agent's context≈ 404 tokensthe definitions of all its tools (4), which an agent carries on every turn
• Tool definitionsC · 71 of 100
• Typed results0 of 4 toolsdeclared outputSchema: results come typed, read once

• Parameters without a description: in 3 of 4
• Not saying whether it only reads or can destroy: 4 of 4

A program checks the server once a day: initialize and tools/list, no model. Tokens are the definitions' length at about four characters a token. The grade averages six checks of every tool's name, description, schema and annotations; it says how well the tools are described, not whether they work. The score weighs what was measured and nothing else: answering (30%), doing the product's job (25%), definitions (20%), context (10%) and use (15%). A part that was not measured is left out, and a hidden instruction caps the score at 40. The state of vendors' MCP servers: method and numbers →

• search_sponsorships

  Search indexed sponsorships by brand name, category and creator size. Args: query: Substring of the brand name (case-insensitive). category: Category enum value, e.g. 'vpn_privacy' (see list_categories). min_subscribers: Only creators…

• get_brand

  Every indexed creator a brand has sponsored. Args: slug: Brand slug, e.g. 'holafly' (lowercase, hyphen-separated).

• get_creator

  Every indexed sponsorship for one YouTube creator. Args: handle: YouTube handle, with or without the leading '@'.

• list_categories

  The sponsorship categories in the index, with per-category counts.