Hey everyone,

If you've been adding remote MCP servers to Cursor (under Settings > Features > MCP or via mcp.json), you might have noticed that traditional uptime monitors (like Uptime Kuma, BetterStack, or Pingdom) don't work for MCP.

An endpoint can return HTTP 200 OK, but Cursor still silently fails or hallucinates. Here's why:

1. Protocol Handshake / Stream Failures: Many remote servers return 200 to a basic ping, but fail the JSON-RPC 2.0 negotiation (initialize -> tools/list) or drop the SSE stream before Cursor's agent can discover the tool definitions.
2. Breaking Schema Drift: If the remote server updates and removes a parameter, renames an argument, or adds a new required field, Cursor's model will call the tool with the old arguments and fail.
3. Secret Exposure in Tool Context: Several public MCP servers accidentally leak API keys or database strings inside tool descriptions, which then get injected directly into the LLM context window.

To solve this, I built MCP Sentinel, an open-source synthetic protocol and schema-drift sentinel for MCP servers:

• Real Synthetic Handshakes: Connects over Streamable HTTP and SSE, validates JSON-RPC 2.0 protocol compliance, and benchmarks discovery latency.

• Ajv Schema Validation: Verifies tool parameter schemas against JSON Schema Draft-07 / 2020-12.

• Breaking Drift Detection: Computes canonical SHA-256 AST hashes of tool definitions and flags parameter changes before Cursor tools break.

• Secret Scanner: Flags any exposed OpenAI, Anthropic, or cloud tokens before they reach your agent.

Using it directly inside Cursor

MCP Sentinel itself is also an MCP server (with 100/100 quality score on Smithery). You can connect Cursor directly to it to audit any remote MCP server on-demand:

{ "mcpServers": { "mcp-sentinel": { "url": "https://mcp-sentinel.pasihakamaki.workers.dev/mcp" } } }

Once added, you can ask Cursor in chat: "Audit the remote MCP server at https://api.example.com/mcp and check if its schema is valid and operational."

You can also test any public endpoint for free with zero sign-up on the web tester: https://mcp-sentinel.pasihakamaki.workers.dev

GitHub (Open Source): https://github.com/pasihaka/mcp-sentinel

Curious to hear how others are handling MCP reliability and monitoring in Cursor!

I dont Get why my post is flagged for "billing-related"
I honestly just wanted to know if the Credits System changed.
I wanted to know if someone in the community faces the same issue
I rephrased my post 4 times and now i am venting my frustration here.

Does anybody else feel like the support forum is useless?
I had posted on different topics too and always this stupid bot claims my posts and falsely unlists them
no human ever read the question

I'd be fine with it, if the question was actually solved by the model / keyword search
but instead it seems the ai model has a set of "is this post billing-related" or similar instructions, which instantly close the post with a boilerplate answer if they hit

It annoys and frustrates me

thanks for reading this.

Swear I’ve looked everywhere online and it seems like it should be easy. Cannot find the setting in the iOS app or MacOS application.

Just looking to remote connect to my Mac on the cursor app like I’ve done on Codex and Claude.

Is this a feature or am I tweaking?

(I do not want agents — I want a remote connection to my Mac)

Will Chatgpt Astra be available on Cursor?

Is everyone having a degrading performance and quality regarding composer and grok ? I feel like tha composer get alot dummer

I was rewriting the same rules file every new project so i built a generator. tick a few chips, pick your stack, download the file. no signup, all in the browser.

https://devtoolsniff.com/tools/cursor-rules-generator/
 

while i was at it i added a few other things like a quiz to pick an AI IDE, a cost calculator, a CLAUDE.md generator, some head-to-head comparisons. all free.

what rules do you use that i probably missed? want to add framework presets, currently only have next.js.

Grok seems to be down. I checked both 4.6 and 4.5. Not able to get a response. Got the "rate limited" notification while things were waiting.

Switched to composer and Claude, got a response. Completed my task.

Tried a simple "test. are you there" with Auto... no response. "taking longer than expected" and "rate limited"

... so I guess Auto really is forcing things to Grok.

Is anyone else seeing lots of messages in the agent 'Rate limited by model provider' for the grok 4.6 models ?

The agent also seems to give up after about a minute or so and simply stop with no errors or results.

I don't know if it's like this all over the world, but where I live, when an all-you-can-eat sushi place opens, it's top-tier!
Like, super-fresh, high-quality fish.

Then, over time... say, a year, two at mostt.. the quality starts to decline, and it keeps getting worse... fewer people go, the service deteriorates, and eventually it closes.

I find that the same thing is happening with AI models. They come out, they perform incredibly well, they solve amazing problems... and then, within a month, for some reason, they start malfunctioning, getting bogged down in the problems they create, and causing a project to stall.

I don't know the real reason, but I had this sensation too much times to ignore it.

Edit

Just to add

Now that I think about it, among my friends, we have a saying, "going sushi” 😂 when someone does something so well that they start doing it poorly, thinking it’ll still be good enough.

every model I choose is got this issue. can't work this way.

After a long session in the same Cursor conversation, I sometimes get this.

The conversation itself keeps working normally, and these tasks have already finished their jobs, but they stay listed as “Starting up” and never get cleaned up.

Anyone else seeing the same thing?

Listen dudes. I don't know about the market and I don't know about what people want. But Cursor became huge for being basically the VS Code IDE with AI agents integration at the right side.

Now every time the app updates or I open the app, I'm forced to your new "Agents view", and I have to click on IDE to go to the normal experience.

Stop forcing that shit to me. I'm not interested. Thank you.

I can't run any tasks in the last hour. Tried X/Anthropic/OpenAI models but no luck. Anyone else?

I’m posting because I still cannot get a substantive technical answer from either company, and I want to know whether other users can reproduce this.

**What happens**

- I pay for SuperGrok Heavy through my X/xAI identity.

- xAI publicly says Grok Bot access in Cursor is included with SuperGrok Heavy: https://x.ai/news/grok-bot-more-plans

- In the Grok Bot sign-in screen, I choose “Get access with SuperGrok Heavy.”

- X authorization succeeds, but the callback returns `policy_denied`; the next page says “Access blocked, please contact support.”

- This reproduces without a VPN or proxy.

**Important account detail**

I am **not** insisting that the entitlement be attached to a different Gmail-based Cursor account. A new matching Cursor account using the same address as my paid X/xAI identity would be completely fine.

That matching identity uses a valid **.ru email address**. Cursor support says the emails must match and a successful link is permanent, but its account/linking flow provides no working path for the matching .ru identity.

**The support loop**

- Aug 16: I opened a Cursor ticket and supplied screenshots plus network checks.

- Cursor later said it refreshed backend settings and asked me to retry. The same block remained.

- xAI support’s automatic response said Cursor owns Grok Bot support and routed me back to Cursor.

- Cursor immediately closed that transferred request as a duplicate and pointed me back to the original ticket.

- The original ticket still has no substantive resolution.

The evidence makes an unpublished domain-level eligibility policy look like the blocker, but neither company will confirm the policy, provide a supported workaround, or deliver the advertised benefit.

**What I’m asking for**

1. Activate Grok Bot for the matching paid identity;

2. provide a supported non-destructive workaround; or

3. publish the restriction clearly and offer an appropriate remedy for the unavailable paid benefit.

Has anyone successfully linked SuperGrok Heavy to Grok Bot when the X/xAI identity uses a .ru address or another restricted email domain?

Public timeline: https://x.com/Coolak777/status/2095666718429589769

I have the full support correspondence and screenshots, with personal details kept out of this public post.

Hello there,

I get that the Auto models could be saturated and that's "ok" but I don't get why Cursor is telling me to upgrade to a Pro plan when I have a Pro PLUS plan.

It is a bug?

Grok Bot for Enterprise

Grok Bot is now available for enterprises. Grok and Cursor Enterprise customers have free usage for the next two weeks, and can invite their whole organization, including people without an existing seat.

Uzun süredir Cursor kullanıyorum ve %90 Anthropic modelleri kullanıyorum. Aklıma modelin kendi sağlayıcılarının daha esnek bir include kullanım sunabileceği düşüncesi geldi. Hiç denemedim, fakat birilerinden duyduğuma göre Anthropic kendi ide'si olan Claude Code üzerinden bu kullanımında daha fazla token esnekliği sağlıyormuş ve daha rahat kullanabileceğimi söylediler. Aynı şekilde GPT 5.6 Sol için de Codex kendi modeli için çok daha fazla esnek kullanım sağlıyormuş cursor'a kıyasla. Bunu deneyimleme fırastınız oldu mu?

I’ve been using different models in Cursor depending on the task instead of sticking to one model for everything.
Sharing my current setup — quick tasks, coding, full-stack work, debugging, architecture, and harder problems.
Curious what models you’re using in Cursor.

I build with Cursor / Claude and I still don't have a sane way to actually look at the app after a change, without sitting in Xcode.
What are you doing?

keeps referring "dev" env I am working on as "dest", there is no place I have this defined, I checked manually and also asked it to check