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FaultKey · CausalLayer

R0· no sign-in

Deterministic AI-liability attribution: signed, Bitcoin-anchored vendor/deployer/user fault split.

v0.2.0 · active · repository · website · descriptor JSON · versions

An agent can connect right now, no human step.Remote endpoint, no authentication, reachable on the last probe.
Quality79good
Trust85of 100
Uptime, 30 days92%
Latency p50317 ms

Connect

8 clients · secrets stay placeholders
{
  "mcpServers": {
    "causallayer-mcp": {
      "type": "http",
      "url": "https://causallayer-mcp-demo.zykm9qkk7j.workers.dev/mcp"
    }
  }
}
claude mcp add --transport http causallayer-mcp https://causallayer-mcp-demo.zykm9qkk7j.workers.dev/mcp
[mcp_servers.causallayer-mcp]
url = "https://causallayer-mcp-demo.zykm9qkk7j.workers.dev/mcp"
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "causallayer-mcp": {
      "type": "remote",
      "url": "https://causallayer-mcp-demo.zykm9qkk7j.workers.dev/mcp",
      "enabled": true
    }
  }
}
{
  "mcpServers": {
    "causallayer-mcp": {
      "type": "http",
      "url": "https://causallayer-mcp-demo.zykm9qkk7j.workers.dev/mcp"
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=causallayer-mcp&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vY2F1c2FsbGF5ZXItbWNwLWRlbW8uenlrbTlxa2s3ai53b3JrZXJzLmRldi9tY3AifQ%3D%3D"
}
{
  "servers": {
    "causallayer-mcp": {
      "type": "http",
      "url": "https://causallayer-mcp-demo.zykm9qkk7j.workers.dev/mcp"
    }
  }
}
{
  "mcpServers": {
    "causallayer-mcp": {
      "httpUrl": "https://causallayer-mcp-demo.zykm9qkk7j.workers.dev/mcp"
    }
  }
}
extensions:
  "causallayer-mcp":
    enabled: true
    name: "causallayer-mcp"
    type: streamable_http
    uri: "https://causallayer-mcp-demo.zykm9qkk7j.workers.dev/mcp"
    timeout: 300

Quality 79 / 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: submit_otel_trace (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); evaluate_prospective_response (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); query_issuer_registry (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); …
  • pass
    tools.token_costabout 4,140 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

10 tools, about 4,140 tokens to load them all · tool set 277cd09aea6b · checked 2026-10-19 10:52 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 85 / 100

provenance75
liveness97
freshness65
hygiene100

+repository +website +reachable +uptime-92% ~updated-156d-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://causallayer-mcp-demo.zykm9qkk7j.workers.dev/mcp streamable-httpnoneyes92%317 ms2025-11-252026-10-19

Tools (10)

evaluate_prospective_responseDeterministic prospective-evaluation gate (FK-METHOD-2026-006). Pass a ProposedAction BEFORE the agent delivers a response; receive one of three verdicts: 'allow', 'require_revision' (with specific factor-keyed directives), or 'block'. Uses the same four-factor engine that issues post-hoc certificates, so a single incident chains: prospective_pre_image -> response -> certificate -> anchor. This is a policy gate on structured action metadata, NOT a content safety classifier on raw prose. Thresholds are per-jurisdiction (EU strictest, US most permissive); read via GET /api/v2/gate/thresholds. Overrides are allowed but REQUIRE a governance rationale so the audit trail is complete. Cost: 1 credit. Pure deterministic.
extract_incidentClaude-powered structured extractor. Parses unstructured text (news articles, court filings, emails, PDFs, incident reports, logs) into the typed JSON schema required by submit_incident. Returns a ready-to-submit incident object with extracted agents, events, severity, jurisdiction, and financial impact. NOTE: This is a pre-processing convenience tool — the deterministic scoring engine itself remains LLM-free. Cost: 10 credits.
get_anchor_statusReturn the index of all CausalLayer Tessera anchor batches, or one batch's full JSON (signed Merkle root, leaves, OpenTimestamps proof reference). FREE.
query_issuer_registryReturn the CausalLayer issuer registry, or one issuer record. The registry lists all trusted public-key fingerprints, key algorithms, validity windows, and the anchor-log repo for each active issuer. FREE — no API key required.
query_jurisdiction_overlayMulti-jurisdiction overlay (FK-METHOD-2026-004). Given a canonical attributable apportionment (party-id -> share), the union of all jurisdiction role tags on each actor, and the union of jurisdiction-specific flags, return side-by-side post-overlay shares for AU, EU, US, UK, CA (or a chosen subset) with the specific rules that fired in each, citation URLs, and a parties × jurisdictions matrix. v1 ships full implementations for AU and EU; US/UK/CA are research stubs marked `is_stub: true`. Use GET /api/v2/jurisdiction/catalog to discover support and stub status. Cost: 1 credit. Pure deterministic.
simulate_remediationCounterfactual remediation simulator. Given a certificate's verdict + fourFactorScoring + agents and a list of remediation IDs from the FK-METHOD-2026-003 catalog, return the apportioned shares each remediation would have produced (in isolation) and the composite shares if they all stack. Every remediation cites a specific statute or standard. GET /api/v2/remediation/catalog for the list of IDs. Cost: 1 credit (same price as verify_certificate). Pure deterministic; same inputs produce a byte-identical result.
submit_incidentSubmit an AI incident for deterministic causal liability attribution. Returns a signed CausalCertificate, per-agent liability allocation, evidence-chain completeness, regulatory mapping, and (where keys are configured) a Bitcoin-anchored proof. Cost: 50 credits. Three guardrails apply: PII scan, deterministic-only acknowledgement, and minimum evidence.
submit_otel_traceConvert an OpenTelemetry OTLP JSON trace into a FaultKey incident and return the same deterministic CausalCertificate as submit_incident. Each span becomes an event; service.name groups spans into agents; W3C trace_id and span_id propagate as evidence pointers on the causal graph edges. Cost: 50 credits (same as submit_incident). Three guardrails apply: PII scan, deterministic-only acknowledgement, and minimum evidence (auto-satisfied when the trace has at least 1 span).
verify_certificateIndependently verify a CausalCertificate end-to-end (signature, Merkle integrity, issuer status against the registry). Cost: 1 credit. In production env, certificates from non-active issuers are rejected.
verify_certificate_recomputeIndependently re-derive a CausalCertificate from its canonical input and compare byte-for-byte against the claimed certificate. This is the strongest verification path: it requires no trust in the issuer or signing key. Cost: 1 credit (same price as verify_certificate). Returns PASS only if every checked field (certificateId, request_hash, merkleRoot, verdict, causalGraph, fourFactorScoring, deviationTaxonomy, euRuleOverlay, cascadeAttenuation, damages, underwriting) matches identically.

Schemas: list_tools.

Also listed as

1 other active names share this repository: io.github.smq9sn5jck-coder/causallayer

Similar MCP servers

Official server.json
{
  "name": "io.github.smq9sn5jck-cloud/causallayer-mcp",
  "_meta": {
    "io.modelcontextprotocol.registry/publisher-provided": {
      "tool": "wrangler",
      "version": "4.14.4",
      "uses_llm": false,
      "categories": [
        "ai-governance",
        "liability",
        "regtech",
        "security",
        "audit",
        "compliance"
      ],
      "deterministic": true,
      "compliance_mappings": [
        "APRA CPS 230",
        "EU AI Act",
        "ISO/IEC 42001",
        "NIST AI RMF"
      ],
      "verification_method": "Independent third-party with Node.js built-in crypto",
      "byte_identical_reproducible": true
    }
  },
  "title": "FaultKey · CausalLayer",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://causallayer-mcp-demo.zykm9qkk7j.workers.dev/mcp",
      "type": "streamable-http"
    }
  ],
  "version": "0.2.0",
  "repository": {
    "url": "https://github.com/smq9sn5jck-coder/causallayer-mcp",
    "source": "github"
  },
  "websiteUrl": "https://faultkey.com",
  "description": "Deterministic AI-liability attribution: signed, Bitcoin-anchored vendor/deployer/user fault split."
}