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rta — zero-knowledge proof of a threshold

R0· no sign-in

Prove a hidden value reached a threshold without revealing the value.

v0.1.0 · active · repository · descriptor JSON · versions

An agent can connect right now, no human step.Remote endpoint, no authentication, reachable on the last probe.
Quality91strong
Trust92of 100
Uptime, 30 days92%
Latency p501178 ms

Connect

8 clients · secrets stay placeholders
{
  "mcpServers": {
    "rta": {
      "type": "http",
      "url": "https://rta.lat/mcp"
    }
  }
}
claude mcp add --transport http rta https://rta.lat/mcp
[mcp_servers.rta]
url = "https://rta.lat/mcp"
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "rta": {
      "type": "remote",
      "url": "https://rta.lat/mcp",
      "enabled": true
    }
  }
}
{
  "mcpServers": {
    "rta": {
      "type": "http",
      "url": "https://rta.lat/mcp"
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=rta&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vcnRhLmxhdC9tY3AifQ%3D%3D"
}
{
  "servers": {
    "rta": {
      "type": "http",
      "url": "https://rta.lat/mcp"
    }
  }
}
{
  "mcpServers": {
    "rta": {
      "httpUrl": "https://rta.lat/mcp"
    }
  }
}
extensions:
  "rta":
    enabled: true
    name: "rta"
    type: streamable_http
    uri: "https://rta.lat/mcp"
    timeout: 300

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.annotations2 of 2 tools declare readOnlyHint or destructiveHint
  • pass
    tools.directory_hintsevery tool declares readOnlyHint, destructiveHint, idempotentHint and openWorldHint
  • pass
    tools.token_costabout 397 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

2 tools, about 397 tokens to load them all · tool set 027e6b263df9 · checked 2026-11-07 19:44 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 92 / 100

provenance75
liveness97
freshness100
hygiene100

+repository +dns-namespace +reachable +uptime-92% +updated-18d-ago

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

Endpoints

remoteauthreachableuptime 30dp50protocollast ok
https://rta.lat/mcp streamable-httpnoneyes92%1178 ms2025-06-182026-11-07

Tools (2)

list_predicatesread-onlyList the thresholds ṚTA can prove: for each predicate, the name, the threshold value, the circuit size and a plain-language label. Use before generating a proof, so the agent knows which statement it can prove without revealing the underlying value.
verify_proofread-onlyVerify a Groth16 zero-knowledge proof that a hidden value reached a threshold — for example 'the account balance is at least 1000'. The verifier learns that the threshold is met and never learns the value: the public signals are empty by construction. Returns whether the proof is valid, the predicate, and what the proof does NOT disclose. Use when a counterparty must show a threshold was met without revealing the number. A one-time nonce is required so the same proof cannot be replayed.

Schemas: list_tools.

Similar MCP servers

More from lat.rta

Official server.json
{
  "name": "lat.rta/rta",
  "title": "rta — zero-knowledge proof of a threshold",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://rta.lat/mcp",
      "type": "streamable-http"
    }
  ],
  "version": "0.1.0",
  "repository": {
    "url": "https://github.com/mrpkk/rta",
    "source": "github"
  },
  "description": "Prove a hidden value reached a threshold without revealing the value."
}