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8 clients · secrets stay placeholders

JSON (mcpServers)Claude CodeCodexOpenCodeCursorVS CodeGemini CLIGoose

{
  "mcpServers": {
    "guard": {
      "type": "http",
      "url": "https://karta.rta.lat/mcp"
    }
  }
}

claude mcp add --transport http guard https://karta.rta.lat/mcp

[mcp_servers.guard]
url = "https://karta.rta.lat/mcp"

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "guard": {
      "type": "remote",
      "url": "https://karta.rta.lat/mcp",
      "enabled": true
    }
  }
}

{
  "mcpServers": {
    "guard": {
      "type": "http",
      "url": "https://karta.rta.lat/mcp"
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=guard&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8va2FydGEucnRhLmxhdC9tY3AifQ%3D%3D"
}

{
  "servers": {
    "guard": {
      "type": "http",
      "url": "https://karta.rta.lat/mcp"
    }
  }
}

{
  "mcpServers": {
    "guard": {
      "httpUrl": "https://karta.rta.lat/mcp"
    }
  }
}

extensions:
  "guard":
    enabled: true
    name: "guard"
    type: streamable_http
    uri: "https://karta.rta.lat/mcp"
    timeout: 300

Quality 90 / 100strong

protocol88 · weight 25

pass
protocol.modernsupports 2026-07-28 (server/discover)
pass
protocol.statelessanswers without a session
pass
protocol.transportstreamable HTTP
warn
protocol.list_ttltools/list declares ttlMs 0, so clients re-fetch it on every use

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.annotations6 of 6 tools declare readOnlyHint or destructiveHint
pass
tools.directory_hintsevery tool declares readOnlyHint, destructiveHint, idempotentHint and openWorldHint
pass
tools.token_costabout 844 tokens to load every tool
pass
tools.api_dumptools are not a one-to-one API dump

stability75 · weight 15

warn
stability.changes6 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

6 tools, about 844 tokens to load them all · tool set df1a288a4c45 · tools last changed 2026-10-27 · checked 2026-11-07 19:10 UTC

Tool changes

2026-10-27policy_rulesadded
List the deterministic rules a spend is checked against (E01-E08) with the order they are applied and the meaning of each. Read-only, no state.
2026-10-27envelope_evidenceadded
Return an evidence bundle for one envelope: state, every recorded spend, the stop record and a sha256 of the whole pack that anyone can recompute. Read-only.
2026-10-27kill_envelopeadded
Stop one task envelope immediately: no further spend is approved for it, the reason is recorded with a timestamp. Idempotent — the first reason wins.
2026-10-27get_envelopeadded
Return an envelope's state: budget, per-call cap, calls used, spent, remaining, allowlist and expiry. Read-only.
2026-10-27open_envelopeadded
Create a signed budget envelope for one task: total budget, per-call cap, call count, allowlisted payees, subscription rule, expiry. Stores it in this server's local ledger (no funds move, no keys). Returns the envelope id. Capped at 30 envelopes/hour per server.
2026-10-27check_spendchangedtitle, annotations

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 92 / 100

provenance75

liveness97

freshness100

hygiene100

+repository +dns-namespace +reachable +uptime-93% +updated-13d-ago

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://karta.rta.lat/mcp` streamable-http	none	yes	93%	1198 ms	2026-07-28	2026-11-07

Tools (6)

`check_spend`read-only	Check whether a proposed agent spend is inside a task envelope. Returns verdict, rule, reason, counterfactual and next. No state is stored.
`envelope_evidence`read-only	Return an evidence bundle for one envelope: state, every recorded spend, the stop record and a sha256 of the whole pack that anyone can recompute. Read-only.
`get_envelope`read-only	Return an envelope's state: budget, per-call cap, calls used, spent, remaining, allowlist and expiry. Read-only.
`kill_envelope`destructive	Stop one task envelope immediately: no further spend is approved for it, the reason is recorded with a timestamp. Idempotent — the first reason wins.
`open_envelope`	Create a signed budget envelope for one task: total budget, per-call cap, call count, allowlisted payees, subscription rule, expiry. Stores it in this server's local ledger (no funds move, no keys). Returns the envelope id. Capped at 30 envelopes/hour per server.
`policy_rules`read-only	List the deterministic rules a spend is checked against (E01-E08) with the order they are applied and the meaning of each. Read-only, no state.

Schemas: list_tools.

Similar MCP servers

Official server.json

{
  "name": "lat.rta.karta/guard",
  "title": "KARTA — spend control for AI agents",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://karta.rta.lat/mcp",
      "type": "streamable-http"
    }
  ],
  "version": "0.1.0",
  "repository": {
    "url": "https://github.com/mrpkk/onchain-ai-agent",
    "source": "github"
  },
  "description": "Task envelope, budget ledger, kill switch and signed receipts for agents that pay."
}