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8 clients · secrets stay placeholders

JSON (mcpServers)Claude CodeCodexOpenCodeCursorVS CodeGemini CLIGoose

{
  "mcpServers": {
    "operstack": {
      "type": "http",
      "url": "https://oper-stack.com/api/mcp/",
      "headers": {
        "X-OperStack-Key": "${X_OPERSTACK_KEY}"
      }
    }
  }
}

claude mcp add --transport http operstack https://oper-stack.com/api/mcp/ --header "X-OperStack-Key: ${X_OPERSTACK_KEY}"

[mcp_servers.operstack]
url = "https://oper-stack.com/api/mcp/"
env_http_headers = { "X-OperStack-Key" = "X_OPERSTACK_KEY" }

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "operstack": {
      "type": "remote",
      "url": "https://oper-stack.com/api/mcp/",
      "enabled": true,
      "headers": {
        "X-OperStack-Key": "{env:X_OPERSTACK_KEY}"
      }
    }
  }
}

{
  "mcpServers": {
    "operstack": {
      "type": "http",
      "url": "https://oper-stack.com/api/mcp/",
      "headers": {
        "X-OperStack-Key": "${X_OPERSTACK_KEY}"
      }
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=operstack&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vb3Blci1zdGFjay5jb20vYXBpL21jcC8iLCJoZWFkZXJzIjp7IlgtT3BlclN0YWNrLUtleSI6IiR7WF9PUEVSU1RBQ0tfS0VZfSJ9fQ%3D%3D"
}

{
  "servers": {
    "operstack": {
      "type": "http",
      "url": "https://oper-stack.com/api/mcp/",
      "headers": {
        "X-OperStack-Key": "${X_OPERSTACK_KEY}"
      }
    }
  }
}

{
  "mcpServers": {
    "operstack": {
      "httpUrl": "https://oper-stack.com/api/mcp/",
      "headers": {
        "X-OperStack-Key": "${X_OPERSTACK_KEY}"
      }
    }
  }
}

extensions:
  "operstack":
    enabled: true
    name: "operstack"
    type: streamable_http
    uri: "https://oper-stack.com/api/mcp/"
    headers:
      "X-OperStack-Key": "${X_OPERSTACK_KEY}"
    timeout: 300

Placeholders to fill from your own secret store: ${X_OPERSTACK_KEY}. The registry never accepts secret values.

Quality 91 / 100strong

protocol75 · weight 25

warn
protocol.modernnewest supported version is 2025-06-18; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
n/a
protocol.statelessonly applies to 2026-07-28 servers
pass
protocol.transportstreamable HTTP
n/a
protocol.list_ttlonly applies to 2026-07-28 servers

authorizationn/a · weight 15

n/a
auth.prm, auth.as_metadata, auth.cimdno remote uses OAuth
n/a
auth.secret_in_urlno templated URL

tool hygiene100 · weight 30

pass
tools.descriptionsevery tool has a description
pass
tools.description_lengthdescriptions are concise
pass
tools.schemasevery tool has an object input schema
pass
tools.annotations11 of 11 tools declare readOnlyHint or destructiveHint
pass
tools.directory_hintsevery tool declares readOnlyHint, destructiveHint, idempotentHint and openWorldHint
pass
tools.token_costabout 1,637 tokens to load every tool
pass
tools.api_dumptools are not a one-to-one API dump

stability100 · weight 15

pass
stability.changesno tool changes in 30 days
pass
stability.rug_pullno tool changed its meaning under the same name

dependenciesn/a · weight 15

n/a
deps.known_vulns, deps.mcp_sdk_version, deps.resolvableno npm or PyPI package

11 tools, about 1,637 tokens to load them all · tool set 33d4a55fe42a · checked 2026-10-19 10:20 UTC

Tool changes

No tool definition changes recorded. A server's first observation is its baseline; later probes record what changes.

Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed. How it is computed.

Trust 83 / 100

no-repository

provenance55

liveness100

freshness100

hygiene80

+dns-namespace +website +reachable +uptime-100% +updated-11d-ago -no-repository

Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed. How it is computed.

Endpoints

remote	auth	reachable	uptime 30d	p50	protocol	last ok
`https://oper-stack.com/api/mcp/` streamable-http	none	yes	100%	210 ms	2025-06-18	2026-10-19

Tools (11)

`ai_visits`read-only	Reports how many visits each AI assistant sent to a site that runs the free OperStack counter. Needs the private token from the counter link, which only the site owner has. Returns visit counts per assistant, not individual visitors.
`audit_site`read-only	Scores any public site out of 100 on the five things an answer engine needs before it will quote a page: whether AI crawlers are allowed in, whether there is a map for agents (llms.txt), whether the entity is clear from schema, whether there is anything quotable, and whether pages carry dates and sources. Use it when someone asks whether ChatGPT or another assistant can read and quote a site. Reads up to 10 public pages. A site that turns away automated readers cannot be scored.
`check_counter_installed`read-only	Looks at a site page and says whether the OperStack visit counter line is really there, including the case where it is there carrying a different key. Use it when a counter reports nothing and the owner does not know why.
`check_llms_txt`read-only	Reads a site llms.txt, the file that tells an assistant which pages matter, and follows its links to see whether they still lead anywhere. Use it when someone asks about llms.txt or whether their map for AI assistants works.
`check_rival`read-only	OperStack Watch subscribers, with their key. Scores a competitor site out of 100 on the same rules as the OperStack free check and the Watch email, and puts it next to the subscriber's own score from the last weekly check.
`compare_sites`read-only	Runs the same AI-visibility scoring on two to four sites and returns them side by side, so a score means something. Use it to see where a site is losing answers to a rival, area by area. A site that turns away automated readers is reported as unreadable.
`fix_of_the_week`read-only	OperStack Watch subscribers, with their key. The fix of the week from the last Watch email: the buyer question it answers, who ChatGPT named instead, what to change, and the text to put on the site, word for word as in the email.
`my_questions`	OperStack Watch subscribers, with their key. Shows the 10 buyer questions Watch asks ChatGPT and Perplexity every week. Can also replace one question (number and new text) or all ten. Only change questions when the person asked for it. Changes apply from the next weekly check, and history starts again for a changed question.
`my_visibility`read-only	OperStack Watch subscribers, with their key. Whether ChatGPT (and Perplexity, when it answered) named the subscriber in answers to their 10 buyer questions at the last weekly check, the trend week by week, and the share of answers against the competitors named. The same numbers as that week's Watch email.
`what_changed`read-only	OperStack Watch subscribers, with their key. What moved between the last two weekly checks: how many answers named the subscriber in ChatGPT and Perplexity, the share of answers against each competitor, and the buyer questions where they were named or dropped.
`who_instead`read-only	OperStack Watch subscribers, with their key. For each of the 10 buyer questions at the last weekly check: whether ChatGPT (and Perplexity) named the subscriber, and which businesses they named instead. Then the sites these answers were built from and where to get mentioned.

Schemas: list_tools.

Similar MCP servers

Official server.json

{
  "name": "com.oper-stack/operstack",
  "title": "OperStack",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://oper-stack.com/api/mcp/",
      "type": "streamable-http",
      "headers": [
        {
          "name": "X-OperStack-Key",
          "isSecret": true,
          "description": "Optional. Personal OperStack Watch key for the subscriber tools. The free tools work without it."
        }
      ]
    }
  ],
  "version": "1.2.0",
  "websiteUrl": "https://oper-stack.com/mcp/",
  "description": "Scores whether AI assistants can read, understand and quote a public website. No account."
}