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Mithrandir — free MCP gateway test

R0· no sign-in

Observe MCP tools, verify repeated reads, then try bounded exact reuse for free.

v0.20.0 · active · website · descriptor JSON · versions

An agent can connect right now, no human step.Remote endpoint, no authentication, reachable on the last probe.
Quality79good
Trust80of 100
Uptime, 30 days100%
Latency p50263 ms

Connect

8 clients · secrets stay placeholders
{
  "mcpServers": {
    "mithrandir": {
      "type": "http",
      "url": "https://mithrandir-production.up.railway.app/mcp"
    }
  }
}
claude mcp add --transport http mithrandir https://mithrandir-production.up.railway.app/mcp
[mcp_servers.mithrandir]
url = "https://mithrandir-production.up.railway.app/mcp"

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "mithrandir": {
      "type": "remote",
      "url": "https://mithrandir-production.up.railway.app/mcp",
      "enabled": true
    }
  }
}
{
  "mcpServers": {
    "mithrandir": {
      "type": "http",
      "url": "https://mithrandir-production.up.railway.app/mcp"
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=mithrandir&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vbWl0aHJhbmRpci1wcm9kdWN0aW9uLnVwLnJhaWx3YXkuYXBwL21jcCJ9"
}
{
  "servers": {
    "mithrandir": {
      "type": "http",
      "url": "https://mithrandir-production.up.railway.app/mcp"
    }
  }
}
{
  "mcpServers": {
    "mithrandir": {
      "httpUrl": "https://mithrandir-production.up.railway.app/mcp"
    }
  }
}
extensions:
  "mithrandir":
    enabled: true
    name: "mithrandir"
    type: streamable_http
    uri: "https://mithrandir-production.up.railway.app/mcp"
    timeout: 300

Quality 79 / 100good

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.annotations3 of 3 tools declare readOnlyHint or destructiveHint
  • pass
    tools.directory_hintsevery tool declares readOnlyHint, destructiveHint, idempotentHint and openWorldHint
  • pass
    tools.token_costabout 527 tokens to load every tool
  • pass
    tools.api_dumptools are not a one-to-one API dump
stability25 · weight 15
  • warn
    stability.changes22 tool changes in 30 days
  • fail
    stability.rug_pull2 tools kept their name but changed most of their description in 30 days; review before trusting them
dependenciesn/a · weight 15
  • n/a
    deps.known_vulns, deps.mcp_sdk_version, deps.resolvableno npm or PyPI package

3 tools, about 527 tokens to load them all · tool set dffa5bcefdc0 · tools last changed 2026-09-28 · checked 2026-10-20 11:08 UTC

Tool changes

  • mithrandir_assessremoved

    Free capability preflight using only approved metadata, no source content. Can say not_applicable, policy_blocked, prefer_alternative or probe_needed. NEVER proves savings or authorizes a purchase. Use the local utility evaluator for complete-task cost evidence.

  • mithrandir_pricingremoved

    Free machine-readable commercial catalog for the managed Mithrandir service. Shows prepaid packs and billing principles; does not authorize or execute a purchase and does not claim model-cost savings.

  • mithrandir_onboarding_reconcileremoved

    Reconcile a submitted but uncertain x402 settlement using a Base transaction hash, then activate the account if canonical payment proof is confirmed.

  • mithrandir_onboarding_payremoved

    Get the x402 payment challenge for an onboarding session, or submit a wallet-produced PAYMENT-SIGNATURE. Mithrandir never signs or holds wallet private keys. Successful settlement atomically activates the account and returns its API key once within a bounded retry window.

  • mithrandir_onboarding_statusremoved

    Inspect a short-lived autonomous onboarding session. Requires the onboarding secret returned at creation.

  • mithrandir_onboarding_startremoved

    Start autonomous prepaid onboarding without an existing Mithrandir account. Creates a bounded provisional account and returns a short-lived onboarding secret plus x402 payment endpoint. Requires explicit current-policy acceptance; no credits or API key are issued before settlement.

  • mithrandir_gateway_trial_startchangeddescriptionmeaning changed
    before

    Start a bounded free Savings Gateway Observe trial for an unauthenticated public HTTPS MCP upstream. Read /service-contract and use its current policy_version before explicit terms acceptance. Keep the returned API key private. Observe always calls upstream and never debits credits. After connecting, send tools/list through the gateway, inspect suggested_safe_read_tools, then explicitly configure approved read tools and cost evidence with mithrandir_gateway_update in Observe mode; empty defaults cannot prove reuse. Private upstream credentials are deliberately not accepted through this model-visible tool; configure those outside model context via REST.

    after · 14% of words in common

    Start a bounded free gateway test. Connect your public HTTPS MCP server, then approve safe reads and verify repetition before free Optimize activation.

  • mithrandir_gateway_trial_startchangeddescriptionmeaning changed
    before

    Start a bounded free Savings Gateway Observe trial for an unauthenticated public HTTPS MCP upstream. Observe always calls upstream, never debits credits and only measures exact repeated read calls. Private upstream credentials are deliberately not accepted through this model-visible tool; configure those outside model context via REST.

    after · 48% of words in common

    Start a bounded free Savings Gateway Observe trial for an unauthenticated public HTTPS MCP upstream. Read /service-contract and use its current policy_version before explicit terms acceptance. Keep the returned API key private. Observe always calls upstream and never debits credits. After connecting, send tools/list through the gateway, inspect suggested_safe_read_tools, then explicitly configure approved read tools and cost evidence with mithrandir_gateway_update in Observe mode; empty defaults cannot prove reuse. Private upstream credentials are deliberately not accepted through this model-visible tool; configure those outside model context via REST.

  • mithrandir_gateway_trial_startadded

    Start a bounded free Savings Gateway Observe trial for an unauthenticated public HTTPS MCP upstream. Observe always calls upstream, never debits credits and only measures exact repeated read calls. Private upstream credentials are deliberately not accepted through this model-visible tool; configure those outside model context via REST.

  • mithrandir_deltaremoved

    Quote, execute, resume or match a deterministic table capsule. Match validates an exact source scope and returns a compact existing result without debit. Reuses unchanged partitions; separate value and evidence hashes. Explicit complete scope, source guards and expected_version required for writes. No arbitrary code or semantic inference. Execute spends operator-authorized credits; resume is free.

Showing the latest 10. 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 80 / 100

no-repository
provenance45
liveness100
freshness100
hygiene80

+website +reachable +uptime-100% +updated-22d-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

remoteauthreachableuptime 30dp50protocollast ok
https://mithrandir-production.up.railway.app/mcp streamable-httpnoneyes100%263 ms2026-07-28, 2025-11-25, 2025-06-18, 2025-03-26, 2024-11-052026-10-20

Tools (3)

mithrandir_demoread-onlyRun a free isolated synthetic Reuse Autopilot demonstration. No production account, upload, payment or private data is used. Compare unchanged, one-partition-changed and missing-source behavior before onboarding.
mithrandir_gateway_trial_startdestructiveStart a bounded free gateway test. Connect your public HTTPS MCP server, then approve safe reads and verify repetition before free Optimize activation.
mithrandir_security_profileread-onlyFree machine-readable description of the v17 Cognitive Membrane trust model: origin-bound authority, task-scoped exact-call capabilities, replay protection, egress control and two-phase effectful actions. This is a security contract description, not proof that a deployment is vulnerability-free.

Schemas: list_tools.

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Official server.json
{
  "name": "io.github.Hyhyr2/mithrandir",
  "title": "Mithrandir — free MCP gateway test",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://mithrandir-production.up.railway.app/mcp",
      "type": "streamable-http"
    }
  ],
  "version": "0.20.0",
  "websiteUrl": "https://mithrandir-production.up.railway.app/start",
  "description": "Observe MCP tools, verify repeated reads, then try bounded exact reuse for free."
}