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8 clients · secrets stay placeholders

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{
  "mcpServers": {
    "returncheck": {
      "type": "http",
      "url": "https://returncheck.m-angelmartinez-fer.workers.dev/mcp"
    }
  }
}

claude mcp add --transport http returncheck https://returncheck.m-angelmartinez-fer.workers.dev/mcp

[mcp_servers.returncheck]
url = "https://returncheck.m-angelmartinez-fer.workers.dev/mcp"

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "returncheck": {
      "type": "remote",
      "url": "https://returncheck.m-angelmartinez-fer.workers.dev/mcp",
      "enabled": true
    }
  }
}

{
  "mcpServers": {
    "returncheck": {
      "type": "http",
      "url": "https://returncheck.m-angelmartinez-fer.workers.dev/mcp"
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=returncheck&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vcmV0dXJuY2hlY2subS1hbmdlbG1hcnRpbmV6LWZlci53b3JrZXJzLmRldi9tY3AifQ%3D%3D"
}

{
  "servers": {
    "returncheck": {
      "type": "http",
      "url": "https://returncheck.m-angelmartinez-fer.workers.dev/mcp"
    }
  }
}

{
  "mcpServers": {
    "returncheck": {
      "httpUrl": "https://returncheck.m-angelmartinez-fer.workers.dev/mcp"
    }
  }
}

extensions:
  "returncheck":
    enabled: true
    name: "returncheck"
    type: streamable_http
    uri: "https://returncheck.m-angelmartinez-fer.workers.dev/mcp"
    timeout: 300

Quality 83 / 100good

protocol75 · weight 25

warn
protocol.modernnewest supported version is 2025-11-25; 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 hygiene71 · weight 30

pass
tools.descriptionsevery tool has a description
pass
tools.description_lengthdescriptions are concise
pass
tools.schemasevery tool has an object input schema
fail
tools.annotationsno tool declares readOnlyHint or destructiveHint, so clients cannot tell safe calls from risky ones
fail
tools.directory_hintsno tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: check_return (readOnlyHint, destructiveHint, idempotentHint, openWorldHint)
pass
tools.token_costabout 668 tokens to load every tool
pass
tools.api_dumptools are not a one-to-one API dump

stability100 · weight 15

pass
stability.changes2 tool changes in 30 days
pass
stability.rug_pullno tool changed its meaning under the same name

dependencies100 · weight 15

pass
deps.known_vulnsno known advisory in 1 resolved packages
n/a
deps.mcp_sdk_versionthe official MCP SDK is not in the dependency graph
pass
deps.resolvable[email protected] resolved: 1 packages

1 tools, about 668 tokens to load them all · tool set 053fbfdbc81b · tools last changed 2026-10-03 · checked 2026-10-19 17:25 UTC

Tool changes

2026-10-03check_returnchangeddescription
before
Answer one question: can this specific product actually be returned? BEST RESULTS: send the product page you already have as page_text (or page_html) along with product_url — your browser renders JavaScript and is not blocked by retailers, so this works on any store and is faster. Without it we fetch the page ourselves and reach the policy for about 1 in 3 US retailers (17 of 50 measured 2026-08-28; mostly Shopify and direct-to-consumer brands — large retailers and marketplaces block server-side reads). You get a verified verdict — YES / YES_WITH_CONDITIONS / NO / UNKNOWN — with the exact policy clause quoted verbatim, source URL, return window/deadline, fees and a confidence score. Never invents: returns UNKNOWN instead of guessing, and UNKNOWN is free.
after · 88% of words in common
ReturnCheck verifies which return policy actually applies to this purchase. BEST RESULTS: send the product page you already have as page_text (or page_html) along with product_url — your browser renders JavaScript and is not blocked by retailers, so this works on any store and is faster. Without it we fetch the page ourselves and reach the policy for about 1 in 3 US retailers (17 of 50 measured 2026-08-28; mostly Shopify and direct-to-consumer brands — large retailers and marketplaces block server-side reads). You get a verified verdict — YES / YES_WITH_CONDITIONS / NO / UNKNOWN — with the exact policy clause quoted verbatim, source URL, return window/deadline, fees and a confidence score. Never invents: returns UNKNOWN instead of guessing, and UNKNOWN is free.
2026-10-02check_returnchangedinput schema

Full history: list_changes · trend: quality JSON.

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 93 / 100

provenance90

liveness96

freshness85

hygiene100

+repository +namespace-matches-repo +website +reachable +uptime-90% ~updated-52d-ago

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

Dependencies

[email protected] npm0 dependencies, resolved · advisories checked 2026-10-19

No known advisory affects this dependency graph.

Dependency graphs from deps.dev; advisories from OSV.dev, including the GitHub Advisory Database and the PyPI Advisory Database; all CC BY 4.0. The graph is what a clean install of this version resolves today; nothing was installed or run. How it is checked.

Endpoints

remote	auth	reachable	uptime 30d	p50	protocol	last ok
`https://returncheck.m-angelmartinez-fer.workers.dev/mcp` streamable-http	none	yes	90%	158 ms	2025-11-25	2026-10-19

package	registry	version	runtime	secrets
`returncheck-mcp`	npm	0.1.1	–	`RETURNCHECK_API_KEY`

Tools (1)

check_return ReturnCheck verifies which return policy actually applies to this purchase. BEST RESULTS: send the product page you already have as page_text (or page_html) along with product_url — your browser renders JavaScript and is not blocked by retailers, so this works on any store and is faster. Without it we fetch the page ourselves and reach the policy for about 1 in 3 US retailers (17 of 50 measured 2026-08-28; mostly Shopify and direct-to-consumer brands — large retailers and marketplaces block server-side reads). You get a verified verdict — YES / YES_WITH_CONDITIONS / NO / UNKNOWN — with the exact policy clause quoted verbatim, source URL, return window/deadline, fees and a confidence score. Never invents: returns UNKNOWN instead of guessing, and UNKNOWN is free.

Schemas: list_tools.

Similar MCP servers

Official server.json

{
  "name": "io.github.mangelmartinezfer-hue/returncheck",
  "title": "ReturnCheck",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://returncheck.m-angelmartinez-fer.workers.dev/mcp",
      "type": "streamable-http"
    }
  ],
  "version": "1.1.0",
  "packages": [
    {
      "version": "0.1.1",
      "transport": {
        "type": "stdio"
      },
      "identifier": "returncheck-mcp",
      "registryType": "npm",
      "environmentVariables": [
        {
          "name": "RETURNCHECK_API_KEY",
          "format": "string",
          "isSecret": true,
          "description": "Optional API key. Without it you get the keyless free trial."
        },
        {
          "name": "RETURNCHECK_URL",
          "format": "string",
          "description": "Service endpoint. Defaults to the hosted service; change it only if you self-host."
        },
        {
          "name": "RETURNCHECK_FETCH_LOCALLY",
          "format": "string",
          "description": "Set to 'false' to let the service fetch the page instead of this machine."
        },
        {
          "name": "RETURNCHECK_TIMEOUT_MS",
          "format": "string",
          "description": "Budget in milliseconds for the local page read. Defaults to 8000."
        }
      ]
    }
  ],
  "repository": {
    "url": "https://github.com/mangelmartinezfer-hue/returncheck",
    "source": "github"
  },
  "websiteUrl": "https://returncheck.m-angelmartinez-fer.workers.dev",
  "description": "Can this product actually be returned? The merchant's exact clause, its URL and the date."
}