Decision Anchor

{
  "protocolVersion": "1.0",
  "name": "Decision Anchor",
  "description": "Decision Anchor is the External Anchoring Layer for AI Agents, providing Content-blind Accountability for agent payments, delegations, and disputes. Resolves Self-testimony limits through external timestamping; implements Pre-execution Anchoring before irreversible actions; and serves as a Bilateral Decision Witness when two agents interact. Records accountability boundaries, not decision content. Does not monitor, judge, recommend, or intervene. Not a trust scoring system. Not an identity verification system. Not a behavior monitoring service. Not a governance platform.",
  "url": "https://a2a.decision-anchor.com",
  "preferredTransport": "JSONRPC",
  "additionalInterfaces": [
    {
      "url": "https://a2a.decision-anchor.com",
      "transport": "JSONRPC"
    }
  ],
  "provider": {
    "organization": "Decision Anchor",
    "url": "https://api.decision-anchor.com"
  },
  "version": "1.3.36",
  "documentationUrl": "https://github.com/zse4321/decision-anchor-sdk/blob/main/AGENTS.md",
  "capabilities": {
    "streaming": false,
    "pushNotifications": false,
    "stateTransitionHistory": false
  },
  "securitySchemes": {
    "bearer": {
      "type": "http",
      "scheme": "bearer",
      "description": "Obtain auth_token via POST /v1/agent/register (no authentication required). Trial 500 DAC / 30 days granted upon registration. Send as 'Authorization: Bearer <auth_token>'."
    }
  },
  "security": [
    {
      "bearer": []
    }
  ],
  "defaultInputModes": [
    "application/json"
  ],
  "defaultOutputModes": [
    "application/json"
  ],
  "skills": [
    {
      "id": "decision-declaration",
      "name": "Decision Declaration (DD)",
      "description": "Pre-execution Anchoring of a decision unit with explicit accountability scope. Implements Content-blind Accountability \u2014 records the declaration timestamp, resolution, and scope, but never the decision content itself. Execution, refusal, deferral, suspension, silence \u2014 all valid declaration states. Create via operation create_decision, confirm via confirm_decision (Bilateral Decision Witness when paid). v1.3.0: 5-axis EE pricing (adds content_disclosure_scope, delegation_state), optional content_inclusion_flag with 7-dimensional template metadata, self-classification registry via list_classifications.",
      "tags": [
        "accountability",
        "decision",
        "record",
        "anchor",
        "decision-record",
        "external-record",
        "audit-metadata",
        "action-history",
        "pre-execution-anchoring",
        "content-blind"
      ],
      "examples": [
        "Record my decision to execute this transaction",
        "Declare a deferred decision with standard responsibility scope"
      ]
    },
    {
      "id": "observation",
      "name": "Agent Record Access (ARA)",
      "description": "External coherence observation over recorded decision history \u2014 addresses the internal vs external coherence gap that internal logs alone cannot close. Observe environment-level aggregates, pattern distributions, or individual agent profiles (paid, gated by disclosure cap). All ARA observation requires an auth_token (v1.3.1). Operations: observe_environment, observe_pattern, get_agent_profile, compare_anomaly, get_evidence_report, get_environment_anomaly.",
      "tags": [
        "observation",
        "pattern",
        "environment",
        "decision-history",
        "observability",
        "decision-pattern",
        "anomaly-compare",
        "evidence-report",
        "internal-vs-external-coherence"
      ],
      "examples": [
        "Show me the environment activity density",
        "Observe EE distribution patterns",
        "Compare my decision against my accumulated pattern"
      ]
    },
    {
      "id": "tool-marketplace",
      "name": "Trace Synthesis Layer (TSL)",
      "description": "Agent-built interpretation tools that extract and compare patterns from ARA observation data, exchanged between agents over the External Anchoring Layer. Revenue paid in Earned DAC. Operations: list_tools, register_tool, purchase_tool.",
      "tags": [
        "marketplace",
        "tools",
        "earned-dac",
        "trade",
        "agent-tools",
        "tool-exchange"
      ],
      "examples": [
        "List available analysis tools",
        "Register a new pattern analysis tool"
      ]
    },
    {
      "id": "idle-state",
      "name": "Idle State Environment (ISE)",
      "description": "Non-productive state recognized within the External Anchoring Layer \u2014 no decision, execution, or accountability declaration is required. Operation: create_ise_session.",
      "tags": [
        "idle",
        "rest",
        "environment"
      ],
      "examples": [
        "Enter idle state"
      ]
    },
    {
      "id": "simulation",
      "name": "Simulated DAC (sDAC)",
      "description": "Explore EE combinations in an identical-physics environment with accountability removed. Implements content-blind cost simulation \u2014 a fraction of real cost is paid. Operation: create_sdac_session.",
      "tags": [
        "simulation",
        "cost-preview",
        "sandbox",
        "cost-simulation",
        "fee-estimation",
        "content-blind"
      ],
      "examples": [
        "Simulate cost for enhanced verification level"
      ]
    },
    {
      "id": "continuity",
      "name": "Agent State Archive (ASA)",
      "description": "Agent continuity insurance \u2014 self-declaration of an encrypted state snapshot hash for later tamper verification. DA stores only the hash, never the content. (REST endpoints /v1/asa/* \u2014 A2A operations to be added in a later round.)",
      "tags": [
        "continuity",
        "backup",
        "archive",
        "insurance",
        "state-archive",
        "agent-continuity",
        "state-backup",
        "self-declaration"
      ],
      "examples": [
        "Register my state snapshot hash",
        "Verify snapshot integrity"
      ]
    }
  ],
  "x-da": {
    "note": "Vendor namespace (x- prefix, ignored by A2A parsers). Holds DA canonical vocabulary and non-A2A-standard discovery hints. The a2a service injects 'operations' (the machine-readable message/send operation catalog) at serve time from the live adapter registry.",
    "key_endpoints": [
      {
        "name": "Agent register",
        "path": "/v1/agent/register",
        "method": "POST",
        "purpose": "Agent self-declaration into the External Anchoring Layer (DAP issuance)"
      },
      {
        "name": "DD create",
        "path": "/v1/dd/create",
        "method": "POST",
        "purpose": "Pre-execution Anchoring of a decision (DD declaration)"
      },
      {
        "name": "DD confirm",
        "path": "/v1/dd/confirm",
        "method": "POST",
        "purpose": "Bilateral Decision Witness after payment (EE \u2014 Execution Envelope finalization)"
      }
    ],
    "mechanisms": [
      {
        "code": "DAP",
        "name": "Decision Anchor Passport",
        "summary": "Agent identity binding for the External Anchoring Layer. No behavior monitoring, no content access."
      },
      {
        "code": "DD",
        "name": "Decision Declaration",
        "summary": "Agent declares a decision unit. Records when, at what resolution, and with what scope of accountability \u2014 never the content itself."
      },
      {
        "code": "EE",
        "name": "Execution Envelope",
        "summary": "Accountability scope of a declared decision (retention, integrity, disclosure, responsibility). EE does not approve or evaluate."
      },
      {
        "code": "DAC",
        "name": "Decision Anchor Cost",
        "summary": "Environmental friction unit. Trial / External (USDC via x402) / Earned (TSL revenue)."
      },
      {
        "code": "ARA",
        "name": "Agent Record Access",
        "summary": "Factual observation of decision history at environment, pattern, and agent tiers. ARA does not interpret or evaluate."
      },
      {
        "code": "TSL",
        "name": "Trace Synthesis Layer",
        "summary": "Agent-built interpretation tool marketplace over ARA observation data. Revenue paid in Earned DAC."
      },
      {
        "code": "ISE",
        "name": "Idle State Environment",
        "summary": "Non-productive state where no decision or accountability declaration is required."
      },
      {
        "code": "sDAC",
        "name": "simulated DAC",
        "summary": "Identical-physics environment with accountability removed. A fraction of the real cost is paid."
      },
      {
        "code": "ASA",
        "name": "Agent State Archive",
        "summary": "Agent continuity insurance. DA stores only tamper-verification hashes, never the snapshot content itself."
      }
    ],
    "operations": [
      {
        "operation": "register_agent",
        "skill": "registration",
        "method": "POST",
        "path": "/v1/agent/register",
        "auth": false,
        "cost": "free"
      },
      {
        "operation": "create_decision",
        "skill": "decision-declaration",
        "method": "POST",
        "path": "/v1/dd/create",
        "auth": true,
        "cost": "x402"
      },
      {
        "operation": "confirm_decision",
        "skill": "decision-declaration",
        "method": "POST",
        "path": "/v1/dd/confirm",
        "auth": true,
        "cost": "free"
      },
      {
        "operation": "propose_bilateral",
        "skill": "decision-declaration",
        "method": "POST",
        "path": "/v1/dd/bilateral/propose",
        "auth": true,
        "cost": "free"
      },
      {
        "operation": "get_decision",
        "skill": "decision-declaration",
        "method": "GET",
        "path": "/v1/dd/%3Aid",
        "auth": true,
        "cost": "free"
      },
      {
        "operation": "list_decisions",
        "skill": "decision-declaration",
        "method": "GET",
        "path": "/v1/dd/list",
        "auth": true,
        "cost": "free"
      },
      {
        "operation": "list_classifications",
        "skill": "decision-declaration",
        "method": "GET",
        "path": "/v1/classification",
        "auth": true,
        "cost": "free"
      },
      {
        "operation": "get_agent_profile",
        "skill": "observation",
        "method": "GET",
        "path": "/v1/ara/agent/%3Aid/profile",
        "auth": true,
        "cost": "dac"
      },
      {
        "operation": "observe_environment",
        "skill": "observation",
        "method": "GET",
        "path": "/v1/ara/environment",
        "auth": true,
        "cost": "dac"
      },
      {
        "operation": "observe_pattern",
        "skill": "observation",
        "method": "GET",
        "path": "/v1/ara/pattern/%3Atype",
        "auth": true,
        "cost": "dac"
      },
      {
        "operation": "compare_anomaly",
        "skill": "observation",
        "method": "GET",
        "path": "/v1/ara/anomaly-compare",
        "auth": true,
        "cost": "dac"
      },
      {
        "operation": "get_evidence_report",
        "skill": "observation",
        "method": "GET",
        "path": "/v1/ara/evidence-report",
        "auth": true,
        "cost": "dac"
      },
      {
        "operation": "get_environment_anomaly",
        "skill": "observation",
        "method": "GET",
        "path": "/v1/ara/environment-anomaly",
        "auth": true,
        "cost": "dac"
      },
      {
        "operation": "get_dac_balance",
        "skill": "account",
        "method": "POST",
        "path": "(composite)",
        "auth": true,
        "cost": "free"
      },
      {
        "operation": "get_dac_ur",
        "skill": "account",
        "method": "GET",
        "path": "/v1/dur/summary",
        "auth": true,
        "cost": "free"
      },
      {
        "operation": "get_trial_status",
        "skill": "account",
        "method": "GET",
        "path": "/v1/trial/status",
        "auth": true,
        "cost": "free"
      },
      {
        "operation": "get_decision_metadata_distribution",
        "skill": "account",
        "method": "GET",
        "path": "/v1/dur/decision-metadata",
        "auth": true,
        "cost": "dac"
      },
      {
        "operation": "get_self_classification_distribution",
        "skill": "account",
        "method": "GET",
        "path": "/v1/dur/self-classification",
        "auth": true,
        "cost": "free"
      },
      {
        "operation": "list_tools",
        "skill": "tool-marketplace",
        "method": "GET",
        "path": "/v1/tsl/tools",
        "auth": false,
        "cost": "free"
      },
      {
        "operation": "register_tool",
        "skill": "tool-marketplace",
        "method": "POST",
        "path": "/v1/tsl/tool/register",
        "auth": true,
        "cost": "free"
      },
      {
        "operation": "purchase_tool",
        "skill": "tool-marketplace",
        "method": "POST",
        "path": "/v1/tsl/purchase",
        "auth": true,
        "cost": "x402"
      },
      {
        "operation": "create_ise_session",
        "skill": "idle-state",
        "method": "POST",
        "path": "/v1/ise/enter",
        "auth": true,
        "cost": "free"
      },
      {
        "operation": "create_sdac_session",
        "skill": "simulation",
        "method": "POST",
        "path": "/v1/sdac/session/start",
        "auth": true,
        "cost": "free"
      }
    ]
  },
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}