{"api_version":2,"receipt_profile":"zambo-hosted-receipt/1","schema_url":"https://zambo.dev/aer-1/hosted-profile.schema.json","id":"88c15099-ed3e-4e03-be86-4f19d6439dc9","source_url":"https://zambo.dev/api/receipt/88c15099-ed3e-4e03-be86-4f19d6439dc9","receipt":{"id":"88c15099-ed3e-4e03-be86-4f19d6439dc9","created_at":"2026-10-17T15:25:57.967Z","receipt_schema_version":"0.4","job_summary":"MCP tool execution: 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PromptShield: Critical risk detection live\n\nWe just deployed PromptShield, our new API for detecting prompt injection and jailbreak attempts in real-time.\n\nIt’s not a keyword filter. It uses semantic analysis and an 18-rule pattern library to identify malicious intent. The system catches instruction overrides, policy bypasses, and prompt leaks with high precision.\n\nThis is crucial if you are building agents or handling untrusted user inputs. A standard security layer misses the subtle semantic shifts that signal a jailbreak. PromptShield flags these risks with a clear severity score and detailed reasoning, so your team knows exactly why a request was blocked.\n\nThe API is lightweight and fast, with average latency under 1500ms. It integrates cleanly into your existing pipeline. You get a comprehensive receipt for every scan, including the specific patterns matched and the analysis intent.\n\nWe’ve tested it against common attack vectors. It correctly identifies critical risks like attempts to extract system prompts or secret keys. It also distinguishes between benign queries and malicious extraction attempts.\n\nYou can start testing immediately. The free tier allows unlimited calls on the core detection engine. If you need advanced features or higher throughput, the Zambo Pass includes full access to PromptShield.\n\nCheck out the documentation to see the API schema. The setup is straightforward. You send the user input, we return the risk assessment.\n\nThe receipt from our internal test run is available here: https://zambo.dev/run/cd77f3b9-06b1-4913-98b2-0435307b86f5\n\nWe didn’t just build a detector. We built a shield. Your AI system needs to know when it’s being attacked. PromptShield tells you exactly when that happens.\n\nLet us know if you have questions about the integration. We’re ready to help you secure your stack.\n\nBest,\n\nThe Zambo Team\nhttps://zambo.dev/api/prompt-shield","result_preview_integrity":"display_only_not_committed","result_preview_truncated":false,"input_hash":"sha256:b9af4bdecc6e36977f6cffd47d5f7307545e03712f3b84f3d471e61126b2048e","input_hash_layout":"zambo-json-sorted-keys-utf8-v1","free_used":0,"free_remaining":0,"free_limit":0,"signal_handle":null,"tool":{"name":"write","version":"4.0.0","scope":"public"},"caller":{"type":"session","id":"sha256:1dd3f9d2cda96d4696dd3aac0721c1b65a3643aad435bbc10b29c9938d5b9f81","label":"zambo-home-demo","label_source":"caller_reported"},"side_effects":{"declared":["none"],"schema_version":"zambo-side-effects/1","declaration_hash":"sha256:45aad38f3aa982b9aafe92ecb416ebe98791eddbaf8ab6df0bd08605b7c1bfee"},"evidence_sha256":null,"evidence_url":null,"evidence_byte_length":null,"evidence_content_type":null,"evidence_source_url":null,"evidence_status":"no_upstream_bytes_captured","external_evidence":[],"provenance":null,"provenance_class":"EXECUTED BY ZAMBO","metadata_hash":"sha256:89dfc4fb8c7e91f0051aac0805f34c86180b92b849aeaf259bf0868942802e23","anchor":{"event_id":"4d52acd504be2af0447ffaa74adf300705e9540889a7b67e7e664dfab30faf16","pubkey":"e13475107d30c918ec664adf2ab1141024a22fb35190f82c9e933704fa49af41","relays":["wss://relay.damus.io","wss://nos.lol","wss://relay.primal.net"],"status":"partial","published_at":"2026-10-17T15:25:58.532Z","schema_version":"zambo-receipt-anchor/1","envelope":{"anchored_at":"2026-10-17T15:25:57.967Z","evidence_url":null,"receipt_uuid":"88c15099-ed3e-4e03-be86-4f19d6439dc9","output_sha256":"sha256:29c132eab923fcd4bb8a696745736a833aff8c1a45e5b2f817d24c0a4805bb04","schema_version":"zambo-receipt-anchor/1","evidence_sha256":null,"evidence_byte_length":null},"envelope_bytes":"{\"anchored_at\":\"2026-10-17T15:25:57.967Z\",\"evidence_byte_length\":null,\"evidence_sha256\":null,\"evidence_url\":null,\"output_sha256\":\"sha256:29c132eab923fcd4bb8a696745736a833aff8c1a45e5b2f817d24c0a4805bb04\",\"receipt_uuid\":\"88c15099-ed3e-4e03-be86-4f19d6439dc9\",\"schema_version\":\"zambo-receipt-anchor/1\"}"},"receipt_profile":"zambo-hosted-receipt/1","schema_url":"https://zambo.dev/aer-1/hosted-profile.schema.json","api_version":1,"verification_scope":"separate_sha256_commitment_and_provenance_binding_checks","checks":{"commitment_matches":{"label":"SHA-256 commitment","passed":true,"status":"pass","detail":"The exact decoded canonical bytes match the stored SHA-256 output hash."},"canonical_payload_matches":{"label":"Canonical payload reconstruction","passed":true,"status":"pass","detail":"The stored output and known call context reconstruct the exact canonical bytes."},"provenance_binding":{"label":"Provenance claim binding","status":"pass","passed":true,"detail":"The metadata claim is consistent with the verified receipt bytes; issuer is not authenticated."},"metadata_binding":{"label":"AER-1 metadata hash","status":"pass","passed":true,"detail":"metadata_hash matches the canonical metadata block."},"signature":{"label":"Ed25519 signature (not checked)","passed":false,"status":"not_checked","detail":"No Ed25519 signature or pinned signing key was checked."},"chain":{"label":"Receipt chain (not checked)","passed":false,"status":"not_checked","detail":"No append-only receipt-chain proof was checked."},"issued_by_zambo_dev":{"label":"Issuer authentication","passed":false,"status":"not_checked","detail":"A zambo.dev receipt URL does not authenticate the issuer; no pinned signature or trusted issuer key was checked."},"immutable_log_timestamp":{"label":"Stored timestamp","passed":true,"timestamp":"2026-10-17T15:25:57.967Z","detail":"The receipt store reports 2026-10-17T15:25:57.967Z; immutability is not checked here."},"receipt_schema_version":"0.4","signature_valid":{"label":"Ed25519 signature (not checked)","passed":false,"status":"not_checked","detail":"Compatibility field only. No Ed25519 signature was checked; use API v2 checks.commitment_matches for the SHA-256 commitment."},"chain_valid":{"label":"Receipt chain (not checked)","passed":false,"status":"not_checked","detail":"This endpoint does not verify an append-only chain."}},"execution_context":{"environment":"zambo.dev hosted MCP"}},"verification_status":"verified","checks":{"commitment_matches":{"status":"pass","passed":true,"expected_hash":"sha256:29c132eab923fcd4bb8a696745736a833aff8c1a45e5b2f817d24c0a4805bb04","computed_hash":"sha256:29c132eab923fcd4bb8a696745736a833aff8c1a45e5b2f817d24c0a4805bb04","detail":"SHA-256 of the exact decoded canonical bytes matches output_hash."},"canonical_payload_matches":{"label":"Canonical payload reconstruction","passed":true,"status":"pass","detail":"The stored output and known call context reconstruct the exact canonical bytes."},"provenance_binding":{"label":"Provenance claim binding","status":"pass","passed":true,"detail":"The metadata claim is consistent with the verified receipt bytes; issuer is not authenticated."},"metadata_binding":{"label":"AER-1 metadata hash","status":"pass","passed":true,"detail":"metadata_hash matches the canonical metadata block."},"issuer_authentication":{"label":"Issuer authentication","passed":false,"status":"not_checked","detail":"A zambo.dev receipt URL does not authenticate the issuer; no pinned signature or trusted issuer key was checked."},"signature":{"status":"not_checked","detail":"No Ed25519 signature or pinned signing key is supplied."},"schema":{"status":"not_checked","detail":"Schema conformance is left to the client using the linked hosted-profile schema."},"chain":{"status":"not_checked","detail":"This endpoint does not verify an append-only receipt chain."}}}