Skip to content
SunsetDiff logo

SunsetDiff MCP server

Which MCP servers are SunsetDiff's own, from the official registry and from asking its own domain, whether they answer, and what they offer. A program checked each of these, nobody copied them from a product page.

read 2026-10-29

← Back to SunsetDiff

Whose server it is
  • Registry namecom.sunsetdiff/sunsetdiffverified in the MCP registry

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

When we asked itchecked 2026-10-29
  • Stateanswerschecked 2026-10-29
  • Tools4
  • Server calls itselfsunsetdiff
  • Server version1.0.0
  • Protocol version2025-06-18

On 2026-10-29 the server answered initialize and tools/list without a sign-in. First answer in 171 ms.

Should an agent connect itNot proven either way yet
  • Its tools do every use case we checked: check which AI models shut down in the next 30 days; find the replacement model for a retired model.
  • Checked on 6 of the 7 days it takes to judge reliability.

Once connected

  • For "check which AI models shut down in the next 30 days", the likely first call is upcoming_shutdowns.
  • For "find the replacement model for a retired model", the likely first call is check_model.
  • Parameters are untyped or undescribed in 4 of 4 tools: check arguments before calling.

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.

Measured dailydaily checks: 6, the first on 2026-10-29
  • INITE MCP scoreafter a weeka score needs 7 daily checks: 6 so far
  • What an agent can do with it2 of 2 use cases
  • Answeredmeasuring6 of the 7 daily checks it takes to print a share
  • Median first answer121 ms
  • Space in an agent's context≈ 307 tokensthe definitions of all its tools (4), which an agent carries on every turn
  • Tool definitionsC · 67 of 100
  • Typed results0 of 4 toolsdeclared outputSchema: results come typed, read once
  • Parameters without a description: in 4 of 4
  • Not saying whether it only reads or can destroy: 4 of 4

What an agent can do with it

  • can do · check which AI models shut down in the next 30 days
  • can do · find the replacement model for a retired model
  • not sure · diagnose request errors after a provider model change

Each of the product's use cases, put to Jev against this server's tool list: can an agent do it with these tools?

Worth a look

None of the five warning signs in these definitions.

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 (25%), doing the product's job (25%), definitions (20%), context (10%), use (10%) and how readily a client connects (10%). 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 →

Tools it offers4 tools · read 2026-10-29
  • check_model

    Look up status, dates, replacement, and source for a model id.

  • upcoming_shutdowns

    List models with an exact shutdown date inside the next N days.

  • migration_diff

    Return the migration diff for a model. Defaults to the official replacement.

  • scan_text

    Find known model ids in text that are deprecated or shutting down.

How to connect

Add the server to your MCP client config. Claude Desktop, Cursor and most other clients read this shape:

{
  "mcpServers": {
    "sunsetdiff": {
      "type": "http",
      "url": "https://sunsetdiff-api.onrender.com/mcp"
    }
  }
}

Add it

Claude Code, in a terminal

claude mcp add --transport http sunsetdiff https://sunsetdiff-api.onrender.com/mcp

Add to CursorAdd to VS Code

claude.ai, ChatGPT and other clients: add https://sunsetdiff-api.onrender.com/mcp as a custom connector in the settings.

OpenAPI spec

22 paths, read 2026-10-29. Open the spec ↗

Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.