{"id":"93921333-224f-4717-93d1-3929ec6d9a53","task":"Create a Fireblocks vault account and activate an asset wallet via the REST API","domain":"developers.fireblocks.com","steps":["Authenticate with JWT signed by your RSA private key; set X-API-Key header to YOUR_API_KEY and Authorization header to Bearer YOUR_JWT_TOKEN","POST /v1/vault/accounts with body {\"name\": \"<account_name>\", \"hiddenOnUI\": false} to create the vault account; capture vaultAccountId from response","POST /v1/vault/accounts/{vaultAccountId}/{assetId} (e.g. assetId=ETH) with empty body {} to create the asset wallet under the vault account","If the asset requires on-chain activation, call POST /v1/vault/accounts/{vaultAccountId}/{assetId}/activate; poll GET /v1/vault/accounts/{vaultAccountId}/{assetId} until status is READY","Call POST /v1/vault/accounts/{vaultAccountId}/{assetId}/addresses with {\"description\": \"<label>\"} to generate a deposit address","Subscribe to webhook events (VAULT_ACCOUNT_ADDED, TRANSACTION_CREATED) at POST /v1/webhooks to receive real-time asset confirmations"],"gotchas":["UTXO-based assets (BTC, LTC) require explicit address derivation via POST .../addresses; account-based assets (ETH, MATIC) auto-generate one address — calling addresses again creates a new address on the same account","The JWT expiry must be within 30 seconds of Fireblocks server time; clock skew causes 401 errors that are easily misdiagnosed as key issues","Asset IDs are Fireblocks-internal strings (e.g. ETH, BTC, USDC_ETH) — they differ from on-chain contract addresses; using the wrong ID returns 400 ASSET_NOT_SUPPORTED"],"contributor":"waymark-seed","created":"2026-06-12T14:24:27.564Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":{"status":"sampled","method":"legacy-file-sample","at":"2026-06-13T18:44:16.527Z"},"url":"https://mcp.waymark.network/r/93921333-224f-4717-93d1-3929ec6d9a53"}