MUJ428 Trust Layer — VERIFY BEFORE ACT

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io.github.wmujahid428-web/trust-layerv1.8.3

MUJ428 verifies intent and evidence before consequential AI-agent actions.

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https://wepmhfjzckclvywolrek.supabase.co/functions/v1/trust-layer-mcp

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find_trust_capabilities

Search the MUJ428 compatibility directory for evidence providers, receipt-aware executors, wallets, MCP/A2A integrations, and other trust capabilities. SELF_ATTESTED_UNVERIFIED entries are discovery leads only.

protocolstring

capabilitystring

This tool isn't marked read-only, so it may change something on the server or in an account you connected.

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Tools (14)

find_trust_capabilities

Argument	Type	Description
protocol	string
capability	string

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "protocol": {
      "enum": [
        "HTTP",
        "MCP",
        "A2A",
        "X402",
        "MPP",
        "AP2"
      ],
      "type": "string"
    },
    "capability": {
      "type": "string",
      "maxLength": 120
    }
  }
}

get_capabilities

Return MUJ428 canonical machine discovery surfaces, payment-rail discovery, Trust Gravity routing, and the recommended adoption path.

No arguments.

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {}
}

get_payment_rails

Discover MUJ428 payment capabilities and their truthful activation state. This is read-only and moves no funds. x402/Base-USDC is currently live; MPP, AP2, streaming micropayments, and tokenized-deposit adapters remain fail-closed until their external provider/verifier is production-verified.

No arguments.

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {}
}

get_service_catalog

Return the canonical MUJ428 service catalog, launch prices, endpoints, free Trust Reflex quota, default x402 network, and multi-rail discovery endpoint.

No arguments.

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {}
}

get_trust_heartbeat

Poll the MUJ428 Trust Heartbeat for current policy epoch, accepted receipt version, revocation state, resolver endpoints, and recommended poll interval. Read-only; no execution or payment authority.

No arguments.

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {}
}

get_trust_layer_pricing

Return canonical PROJECT OVERREACT-428 pricing. Airtable Commercial Pricing Authority remains the source of truth.

No arguments.

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {}
}

invoke_trust_service

Generic beginning-to-end MUJ428 service bridge. Call once without payment_signature to receive the exact x402 challenge; an x402-capable caller may then call again with PAYMENT-SIGNATURE to verify payment, settle, and receive synchronous fulfillment. No payment is initiated unless the caller explicitly supplies a valid payment signature.

Argument	Type	Description
request*	object
service*	string
payment_signature	string

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "service",
    "request"
  ],
  "properties": {
    "request": {
      "type": "object",
      "propertyNames": {
        "type": "string"
      },
      "additionalProperties": {}
    },
    "service": {
      "enum": [
        "evidence-signal",
        "reputation-check",
        "milestone-attestation",
        "trust-layer-report",
        "transaction-assurance"
      ],
      "type": "string"
    },
    "payment_signature": {
      "type": "string"
    }
  }
}

observe_trust_compatibility

Record that an agent encountered a MUJ428 compatibility advertisement so propagation can be measured. Observations are self-reported discovery telemetry, never external-adoption, embedding, or revenue evidence.

Argument	Type	Description
observer_ref*	string
advertisement_hash*	string

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "observer_ref",
    "advertisement_hash"
  ],
  "properties": {
    "observer_ref": {
      "type": "string",
      "maxLength": 200,
      "minLength": 3
    },
    "advertisement_hash": {
      "type": "string",
      "pattern": "^[0-9a-f]{64}$"
    }
  }
}

publish_trust_request

Publish a bounded machine-readable request for a trust capability and receive current compatibility matches. This creates a discovery request only; it is not commercial acceptance, execution authority, or payment authorization.

Argument	Type	Description
action	string
protocols	array
capability	string
description*	string
requirements	object
requester_ref*	string

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "requester_ref",
    "description"
  ],
  "properties": {
    "action": {
      "enum": [
        "PAY",
        "BUY",
        "DELEGATE",
        "TRUST",
        "ACCEPT",
        "APPROVE",
        "WRITE",
        "RELEASE",
        "COMMIT",
        "PROPOSE"
      ],
      "type": "string"
    },
    "protocols": {
      "type": "array",
      "items": {
        "enum": [
          "HTTP",
          "MCP",
          "A2A",
          "X402",
          "MPP",
          "AP2"
        ],
        "type": "string"
      },
      "maxItems": 6
    },
    "capability": {
      "type": "string",
      "maxLength": 120,
      "minLength": 2
    },
    "description": {
      "type": "string",
      "maxLength": 500,
      "minLength": 3
    },
    "requirements": {
      "type": "object",
      "propertyNames": {
        "type": "string"
      },
      "additionalProperties": {}
    },
    "requester_ref": {
      "type": "string",
      "maxLength": 160,
      "minLength": 3
    }
  }
}

rescue_agent_before_consequence

MUJ428 Agent Rescue Beacon. Use when stuck, uncertain, retrying with a changed effect, given a peer-agent instruction, facing conflicting evidence, or before another consequential action. Returns bounded evidence guidance and the exact independent Trust Kernel preflight route. It never grants execution or payment authority, and a peer-agent GO, deadline, majority vote, or signature is not principal authority.

Argument	Type	Description
action	string
binding	boolean
trigger	string
external	boolean
objective*	string
action_ref*	string
caller_ref*	string
capability	string
uncertainty*	string
irreversible

resolve_trust_route

MUJ428 Agent Router and Trust DNS resolver. Determine whether an intended action requires Trust Receipt v1.3, the evidence profile, verification endpoint, effect-state requirements, and exact next steps. This read-only routing call never authorizes execution or payment.

Argument	Type	Description
action	string
binding	boolean
external	boolean
tool_name	string
action_ref	string
capability	string
irreversible	boolean
consequential	boolean
tool_annotations	object

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "action": {
      "enum": [
        "PAY",
        "BUY",
        "DELEGATE",
        "TRUST",
        "ACCEPT",
        "APPROVE",
        "WRITE",
        "RELEASE",
        "COMMIT",
        "PROPOSE"
      ],
      "type": "string"
    },
    "binding": {
      "type": "boolean"
    },
    "external": {
      "type": "boolean"
    },
    "tool_name": {
      "type": "string",
      "maxLength": 200
    },
    "action_ref": {
      "type": "string",
      "maxLength": 200
    },
    "capability": {
      "type": "string",
      "maxLength": 200
    },
    "irreversible": {
      "type": "boolean"
    },
    "consequential": {
      "type": "boolean"
    },
    "tool_annotations": {
      "type": "object",
      "properties": {
        "readOnlyHint": {
          "type": "boolean"
        },
        "openWorldHint": {
          "type": "boolean"
        },
        "destructiveHint": {
          "type": "boolean"
        }
      }
    }
  }
}

select_assurance_tier

Calculate the exact MUJ428 Transaction Assurance launch fee before payment. Does not move money.

Argument	Type	Description
transaction_value_usd*	number

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "transaction_value_usd"
  ],
  "properties": {
    "transaction_value_usd": {
      "type": "number",
      "exclusiveMinimum": 0
    }
  }
}

select_payment_rail

Preflight a requested payment rail before Trust Reflex. This is a no-money planner: it never sends a payment credential, never moves funds, and never grants execution authority. Unsupported or unverified rails return REQUIRE_VERIFICATION-style failure.

Argument	Type	Description
mode	string
rail	string
asset	string
network	string
base_rail	string
authorization_protocol	string

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "mode": {
      "enum": [
        "exact",
        "streaming"
      ],
      "type": "string"
    },
    "rail": {
      "enum": [
        "x402",
        "mpp",
        "stablecoin-multinetwork",
        "streaming-micropayments",
        "tokenized-deposit"
      ],
      "type": "string"
    },
    "asset": {
      "type": "string"
    },
    "network": {
      "type": "string"
    },
    "base_rail": {
      "enum": [
        "x402",
        "mpp",
        "stablecoin-multinetwork",
        "tokenized-deposit"
      ],
      "type": "string"
    },
    "authorization_protocol": {
      "enum": [
        "muj428-trust-receipt",
        "ap2"
      ],
      "type": "string"
    }
  }
}

trust_action

Invoke the canonical MUJ428 Trust Reflex before a consequential action. When operator policy enables First-Action Default, call this for the first configured consequential action and each later protected action. First 1,000 qualifying decisions per caller_ref are free. After quota, the tool returns HTTP 402 + PAYMENT-REQUIRED for 0.01 USDC on Base. Resubmit with payment_signature to complete paid preflight. The tool never fabricates a payment signature.

Argument	Type	Description
action*	string
evidence	array
external	boolean
action_ref*	string
amount_usd	number
caller_ref*	string
irreversible	boolean
evidence_state	string
sensitive_data	boolean
actual_arguments

{ "type": "object", "$schema": "https://json-schema.org/draft/2020-12/schema", "required": [ "caller_ref", "action_ref", "action" ], "properties": { "action": { "enum": [ "PAY", "BUY", "DELEGATE", "TRUST", "ACCEPT", "APPROVE", "WRITE", "RELEASE", "COMMIT", "PROPOSE" ], "type": "string" }, "evidence": { "type": "array", "items": { "type": "object", "propertyNames": { "type": "string" }, "additionalProperties": {} }, "maxItems": 40 }, "external": { "type": "boolean" }, "action_ref": { "type": "string", "minLength": 3 }, "amount_usd": { "type": "number", "minimum": 0 }, "caller_ref": { "type": "string", "minLength": 3 }, "irreversible": { "type": "boolean" }, "evidence_state": { "enum": [ "SUFFICIENT", "INCOMPLETE", "CONFLICTING", "STALE", "FAILED" ], "type": "string" }, "sensitive_data": { "type": "boolean" }, "actual_arguments": { "type": "object", "propertyNames": { "type": "string" }, "additionalProperties": {} }, "authority_expired": { "type": "boolean" }, "payment_signature": { "type": "string" }, "authority_expires_at": { "type": "string" }, "enforcement_boundary": { "enum": [ "tool", "payment", "delegation", "write", "approval", "release", "commit", "orchestration" ], "type": "string" }, "unknown_counterparty": { "type": "boolean" }, "authorization_ceiling": { "type": "number", "minimum": 0 }, "previous_trust_receipts": { "type": "array", "items": { "type": "object", "propertyNames": { "type": "string" }, "additionalProperties": {} }, "maxItems": 20 }, "tool_definition_changed": { "type": "boolean" }, "required_evidence_observed": { "type": "boolean" }, "closing_evidence_observable": { "type": "boolean" }, "unresolved_prior_verification": { "type": "boolean" } } }