# Sharpe Nova OS Governed Review Context

> Sharpe Nova OS Governed Review Context is a paid API for AI agents from nova-retail-controlled-proof.onrender.com, paid per call via x402, $0.1/call, status unknown (last checked 2026-10-11).

Returns pre-execution decision context for agent-prepared capital actions, structuring review state before a local authority decides and an external system executes.

## Facts

- Endpoint: POST https://nova-retail-controlled-proof.onrender.com/retail/v1/context/governed-review?utm_source=zero.xyz
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sharpe-nova-os-governed-review-context-9857a511
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_eoOwpHBgKoOgrIbp66QKm

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability sharpe-nova-os-governed-review-context-9857a511 -d '<json body>'
```

Example prompt: Before we submit the BTC/USDC treasury rebalance action scheduled for today between 2pm and 3pm, pull the current governed review context from Nova so the local authority can see the constraint state, source freshness, and authority handoff before deciding.

## When to prefer this

Use this endpoint when an AI agent has prepared a capital action and needs structured pre-execution review context before a human or institutional authority makes the go/no-go decision. It is specifically designed for the Nova OS four-stage context ladder where Nova structures review but does not approve or execute — prefer this over generic state-check or approval APIs when you need reproducible context hashes, authority handoff metadata, constraint sources, and temporal action windows in a single governed response.

## Known failure modes

- Invalid or missing review profile ID returns an error or unresolvable context
- Stale or unresolved source conflicts result in context_state value other than 'current'
- Network or service unavailability on the onrender.com host returns a 5xx error
- Malformed POST body results in a 4xx validation error
- Payment of 0.1 USDC not attached or invalid causes x402 payment-required rejection

## How this service works

Pre-execution decision context for agent-prepared capital actions. State Ping is the front door into a four-stage context ladder. Nova structures review context; local authority decides; external systems execute. Nova does not approve or execute the action.

## Output

Returns a JSON object containing the governed review context resource, including: boundary effects (approval, execution, authorization, chronology acceptance — all typically 'none' since Nova does not approve or execute), source state with observed-at timestamps and reconciliation status, temporal context with the intended action window and pending state, authority handoff identifying local institutional authority as decision owner and external system as execution owner, constraint context sources, chronology context with prior review references, and a reproducibility record with context hash and review profile identifiers.

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "boundary": {
   "approval_effect": "none",
   "execution_effect": "none",
   "authorization_effect": "none",
   "chronology_acceptance_effect": "none"
  },
  "created_at": "2026-09-12T12:05:00Z",
  "resource_id": "governed-review-context-328628c37f3b5bf2e6c459f3",
  "source_state": {
   "value": "complete",
   "sources": [
    {
     "source_id": "public-example-source",
     "observed_at": "2026-09-12T12:00:00Z",
     "source_type": "public_example",
     "source_status": "present_unverified",
     "contribution_scope": [
      "market_pair_last_price"
     ],
     "claim_reconciliation_status": "not_assessed"
    }
   ],
   "unresolved_source_conflicts": []
  },
  "access_effect": "context_resource_access_only",
  "context_state": {
   "value": "current",
   "reasons": [
    "current_context_freshness:fresh"
   ]
  },
  "resource_type": "governed_review_context",
  "schema_version": "0.1.0",
  "reproducibility": {
   "signature": null,
   "context_hash": "328628c37f3b5bf2e6c459f36ccc982a9e1e424cf09f4cbea6f052a1388d63d9",
   "schema_version": "0.1.0",
   "source_versions": [
    {
     "source_id": "public-example-source",
     "source_status": "present_unverified"
    }
   ],
   "review_profile_id": "treasury-review-example",
   "record_source_type": "synthetic",
   "review_profile_hash": "sha256:public-example-profile-hash",
   "source_segmentation": [
    {
     "segment_id": "public-example-current-context",
     "source_reference": "state-ping-example-current",
     "record_source_type": "synthetic"
    }
   ],
   "classification_version": "governed-review-context-v0.1",
   "review_profile_version": "1"
  },
  "authority_effect": "none",
  "temporal_context": {
   "pending_state": [],
   "source_observed_at": "2026-09-12T12:00:00Z",
   "temporal_conflicts": [],
   "intended_action_window": "2026-09-12T14:00:00Z/2026-09-12T15:00:00Z",
   "review_context_created_at": "2026-09-12T12:05:00Z"
  },
  "authority_handoff": {
   "decision_owner": "local_institutional_authority",
   "execution_owner": "external_system",
   "Nova_authority_effect": "none"
  },
  "chronology_context": {
   "prior_review_references": [],
   "accepted_memory_references": [],
   "automatic_chronology_acceptance": false,
   "relevant_changes_since_prior_review": []
  },
  "constraint_context": {
   "constraint_sources": [
    "institution-policy:treasury-example-v1"
   ],
   "observed_constraints": [
    {
     "state": "observed",
     "statement
… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/sharpe-nova-os-governed-review-context-9857a511/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from nova-retail-controlled-proof.onrender.com](https://www.zero.xyz/host/nova-retail-controlled-proof.onrender.com/llms.txt)