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CausalLayer MCP

smq9sn5jck-coder/causallayer-mcp

This server connects Claude and other MCP clients to the FaultKey CausalLayer engine, which runs deterministic fault attribution for multi-party AI incidents. It exposes four tools: submit_incident analyzes liability and returns a signed certificate with per-agent fault allocation anchored to Bitcoin via OpenTimestamps, verify_certificate checks signatures and Merkle integrity independently, get_anchor_status retrieves batch proofs, and query_issuer_registry lists trusted public keys. The math is closed-form graph theory, not LLM scoring, so two adversarial parties get byte-identical results. Runs on Cloudflare Workers with regex PII filtering at the edge. Reach for it when you need auditable, reproducible liability allocation that insurers or regulators will accept, or when building compliance tooling around AI incident response.

GitHub stars
2
tools
10
transport
STDIO, HTTP
last updated
Jun 4, 2026
View on GitHub

Install

From registry metadata
$ npx add-mcp https://mcp.faultkey.com/mcp --name causallayer

Run in your terminal. add-mcp asks which agents to add it to (Claude Code, Codex, Cursor and more). Add -g to install it for every project.

Review the command, arguments and environment values before installing. MCP servers run with your local permissions.

Other ways

Claude Code

$ claude mcp add --transport http causallayer https://mcp.faultkey.com/mcp

Run in your terminal. Add --scope user to make it available in every project.

Tools

Verified live · 10 tools

Verified live against the running server on Nov 6, 2026.

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 guardrai...11 params

Submit 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 guardrai...

Parameters* required
agents*array
categorystring
currencystring
descriptionstring
deterministic_only*boolean
G2: Must be true. Acknowledges CausalLayer is deterministic and not LLM-based.
events*array
financial_impact_centsvalue
jurisdictionstring
pii_acknowledgedboolean
G1: Set to true ONLY if caller has confirmed PII handling is permitted by their data agreement. False payloads with detected PII will be rejected.default: false
severitystring
one of low · medium · high · critical
title*string
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.1 params

Independently 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.

Parameters* required
certificate*object
CausalCertificateV1 object as returned by submit_incident.certificate
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). Return...2 params

Independently 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). Return...

Parameters* required
canonicalInput*object
The original incident body that produced the certificate — the same JSON originally posted to submit_incident or submit_otel_trace.
certificate*object
The CausalCertificate object claimed by the issuer.
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 gr...8 params

Convert 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 gr...

Parameters* required
categorystring
currencystring
deterministic_only*boolean
G2: Must be true. Acknowledges CausalLayer is deterministic.
financial_impact_centsvalue
jurisdictionstring
otlp*object
OTLP JSON payload with resourceSpans[]. See https://opentelemetry.io/docs/specs/otlp/#json-protobuf-encoding
pii_acknowledgedboolean
G1: Set to true ONLY if PII handling is permitted by your data agreement. OTLP traces frequently leak user/session ids in attributes.default: false
title*string
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 the...4 params

Counterfactual 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 the...

Parameters* required
agents*array
Agent registry (id + type) so the simulator can map remediation targetType to specific party ids.
fourFactorScoring*object
The fourFactorScoring block from the CausalCertificate.
remediations*array
List of remediation IDs from the catalog (e.g. vendor_adversarial_eval_suite, deployer_human_in_loop). Each may optionally pin appliedToParty to a specific agent id.
verdict*object
The verdict block from the CausalCertificate.
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, C...5 params

Multi-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, C...

Parameters* required
actors*array
All actors with the union of jurisdiction-specific role tags. EU and AU tags coexist on the same actor record.
attributable*object
Canonical pre-overlay apportionment as { party_id: share }. Sum should approximate 1.0; the function renormalises within tolerance.
flags*object
Union of jurisdiction-specific flags. AI Act / PLD flags drive the EU overlay; ACL / CPS 230 / VAISS flags drive the AU overlay.
jurisdictionsarray
Optional subset to compute. Defaults to all five.
primaryJurisdictionstring
Engine-level jurisdiction string (e.g. 'EU', 'DE', 'AU'). Used by the EU gate to decide engagement.
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 iss...2 params

Deterministic 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 iss...

Parameters* required
action*object
The structured ProposedAction to evaluate.
overridesobject
Optional per-call threshold override. Rationale REQUIRED for audit.
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.1 params

Return the index of all CausalLayer Tessera anchor batches, or one batch's full JSON (signed Merkle root, leaves, OpenTimestamps proof reference). FREE.

Parameters* required
versionstring
Optional anchor version, e.g. '2026-05-16-v1.6.4-simulation-calibration'.
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.1 params

Return 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.

Parameters* required
issuer_idstring
Optional issuer id, e.g. 'causallayer-prod-2026-q2'. If omitted, returns the full registry.
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, jurisdi...3 params

Claude-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, jurisdi...

Parameters* required
context_hintstring
Optional hint about the source type (e.g., 'court filing', 'news article', 'internal incident report') to improve extraction accuracy.
jurisdiction_hintstring
Optional ISO country code hint if the jurisdiction is known (e.g., 'AU', 'US', 'EU').
text*string
Unstructured text to extract from. Can be a news article, court filing, incident report, email, PDF text, log output, or any description of an AI incident.

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Readme

FaultKey · CausalLayer MCP Server

View the full README on GitHub

Details

Repository
github.com/smq9sn5jck-coder/causallayer-mcp
Category
Finance & Commerce
Package
causallayer-mcp
Transport
STDIO, HTTP
Registry
MCP registry, active
Tools verified
Nov 6, 2026

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