> ## Documentation Index > Fetch the complete documentation index at: https://pegana.xyz/docs/llms.txt > Use this file to discover all available pages before exploring further. # Simulate a depeg's cross-protocol liquidation cascade (advisory) ## OpenAPI ````yaml https://api.pegana.xyz/openapi.json get /v1/assets/{symbol}/simulate-depeg openapi: 3.1.0 info: title: Pegana API description: >- The peg-risk oracle for Solana. Read real-time peg state, history, alerts, and delivery health across 26 active mainnet assets spanning 6 classes — LSTs, fiat / CDP / delta-neutral / yield-bearing / FX stables, and a leveraged synthetic. Some assets are flagged `monitoring_only` (beta): their alerts are live but the calibration is provisional. Public read endpoints require no API key but ARE rate-limited per IP (300/min global, 10/min on /v1/audit.csv); exceeding the limit returns 429 with a Retry-After header. User-scoped /v1/me/* routes require a JWT obtained via Telegram Login. Every state transition emits a public receipt at /v1/audit/{id} with the methodology version, frozen inputs, and an on-chain SPL Memo commit (SAS deferred per ADR-0004 — SPL Memo gives 90% of the value). EVERY error response across the API is JSON — the envelope is `{error, message, asset?}` (the `ApiError` schema); branch on the stable `error` code, never on `message`. Malformed request bodies surface as `{error:"invalid_body"}`. Any endpoint may also return 500 `{error:"internal"}` on an unexpected server error. Value conventions: monetary and ratio amounts are exact decimal STRINGS (parse with a decimal library, never a float) with trailing zeros trimmed; USD aggregate fields (e.g. `market_cap`, `loop_exposure_usd`, `liquidatable_usd`) are rounded to the cent while price/discount signal fields keep full precision. All timestamps are RFC3339 UTC with millisecond precision and a `Z` suffix (`2026-07-24T15:33:14.545Z`). contact: name: Rafael Souza email: rafael@pegana.xyz license: name: MIT identifier: MIT version: 0.1.0 servers: - url: https://api.pegana.xyz description: Production security: [] tags: - name: Health description: Liveness and readiness probes - name: Assets description: Public read access to asset state, history, and metadata - name: Alerts description: Global feed of state transitions - name: Stats description: Aggregate counters and delivery health - name: Auth description: Telegram Login Widget → JWT - name: Me description: Authenticated user profile and preferences - name: Subscriptions description: User alert subscriptions - name: Webhooks description: User-managed Ed25519-signed webhooks - name: WebSocket description: Live state stream - name: audit description: >- Public receipts for alerts — methodology version, inputs frozen, replay bundles. All endpoints public, no auth, cacheable. ADR-0006 four-state response on /v1/audit/:id (200/202/404/410); ADR-0014 bounds (90-day max, 100-row max, 50k-row cap). - name: methodology description: >- Public lifecycle status of the active methodology — version + status (active/deprecated/broken) + optional fix_url when broken. Consumed by web/app/api/methodology to power the home-page trust strip. - name: peg description: >- Mint-keyed peg-signal feed for tokens.xyz / aggregator consumption. Public, no auth, cacheable. Honest beta status via `calibration` + `monitoring_only`; freshness via `as_of` + `stale`. paths: /v1/assets/{symbol}/simulate-depeg: get: tags: - Assets summary: Simulate a depeg's cross-protocol liquidation cascade (advisory) operationId: asset_simulate_depeg parameters: - name: symbol in: path description: Asset symbol — case-insensitive. required: true schema: type: string - name: shock_bps in: query description: Collateral shock in bps. Must be one of {100, 250, 500, 1000, 2000}. required: true schema: type: integer format: int32 responses: '200': description: Cascade estimate for the shock content: application/json: schema: $ref: '#/components/schemas/SimulateDepegResponse' '400': description: shock_bps not in {100,250,500,1000,2000} content: application/json: schema: $ref: '#/components/schemas/ApiError' '404': description: Asset symbol unknown or inactive content: application/json: schema: $ref: '#/components/schemas/ApiError' components: schemas: SimulateDepegResponse: type: object required: - asset - shock_bps - loop_exposure_usd - liquidatable_usd - positions_affected - coverage - by_protocol - model_note properties: as_of: type: - string - 'null' asset: type: string by_protocol: type: array items: $ref: '#/components/schemas/SimulateByProtocol' coverage: type: string description: >- `full` | `partial` | `unknown`. `partial` whenever risky bands were k-floor-dropped or dominance-suppressed (the honest ADR-0036 posture). liquidatable_usd: type: string description: >- Collateral (USD) in bands that cross their liquidation threshold at this shock. loop_exposure_usd: type: string description: >- Total leveraged collateral across protocols (context, from loop-exposure). model_note: type: string description: ADR-0036 inv.9 — advisory model estimate, not a verifiable receipt. positions_affected: type: string description: >- Bucketed range of affected positions (ADR-0036 inv.8 — never a raw count). shock_bps: type: integer format: int32 ApiError: type: object required: - error - message properties: asset: type: - string - 'null' description: The offending asset symbol, present only for asset-scoped errors. error: type: string description: Stable, machine-readable code. Branch on this, never on `message`. message: type: string description: >- Human-readable explanation. NOT stable — for humans/logs; do not parse. SimulateByProtocol: type: object required: - protocol - liquidatable_usd - positions_affected properties: liquidatable_usd: type: string positions_affected: type: string protocol: type: string ````