{ "x402Version": 2, "id": 12352, "slug": "12352", "resource": "https://kairostamp.com/api/v1/snapshot", "description": "Kairostamp evidence snapshot: server-side fetch of one public http/https URL, returning a time-stamped receipt with the response status, content type, byte length, SHA-256 of the body, redirect chain, a text preview, and a tamper-evident hash-chain entry.", "type": "http", "accepts": [ { "scheme": "exact", "network": "eip155:8453", "payTo": "0xdB6F694aE695C632C82677a50593B46137808453", "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913", "amount": "10000", "maxTimeoutSeconds": 300 } ], "outputSchema": { "bazaar": { "info": { "input": { "body": { "url": "https://example.com/" }, "bodyType": "json", "method": "POST", "type": "http" }, "output": { "example": { "chain_hash": "d084fff3e5d852089814f7d4d3ffe9d04d1a39ce9d2e0573a95f24cf78fb584d", "previous_chain_hash": "da27fe24efc04330962d1b95c7929a9de901ad0ea49a7997edf9f2731bf88def", "receipt": { "byte_length": 559, "content_type": "text/html", "fetched_at": "2026-08-21T06:32:12.771Z", "redirect_chain": [], "sha256": "ff67a9d764d6a2367a187734e697f6a53217db9a21c101d410a113ca871a299d", "status_code": 200, "text_preview": "Example Domain…", "url": "https://example.com/" }, "receipt_id": "85cd424c-b68b-440e-8f4f-e02147799f30" }, "type": "json" } }, "schema": { "$schema": "https://json-schema.org/draft/2020-12/schema", "properties": { "input": { "additionalProperties": false, "properties": { "body": { "additionalProperties": false, "examples": [ { "url": "https://example.com/" } ], "properties": { "url": { "description": "Public http/https URL to snapshot.", "examples": [ "https://example.com/" ], "format": "uri", "maxLength": 2048, "type": "string" } }, "required": [ "url" ], "type": "object" }, "bodyType": { "enum": [ "json", "form-data", "text" ], "type": "string" }, "method": { "enum": [ "POST" ], "type": "string" }, "type": { "const": "http", "type": "string" } }, "required": [ "type", "method", "bodyType", "body" ], "type": "object" }, "output": { "properties": { "example": { "properties": { "chain_hash": { "description": "SHA-256 hash-chain value of this receipt.", "type": "string" }, "previous_chain_hash": { "description": "SHA-256 hash-chain value of the previous receipt, or null for the first entry.", "type": [ "string", "null" ] }, "receipt": { "properties": { "byte_length": { "description": "Bytes read from the response body.", "type": "integer" }, "content_type": { "description": "Response Content-Type, if provided.", "type": [ "string", "null" ] }, "fetched_at": { "description": "Server fetch timestamp (UTC).", "format": "date-time", "type": "string" }, "redirect_chain": { "description": "Ordered URLs of any redirects followed (max 3).", "items": { "format": "uri", "type": "string" }, "type": "array" }, "sha256": { "description": "SHA-256 of the response body bytes.", "type": "string" }, "status_code": { "description": "HTTP status returned by the target.", "type": "integer" }, "text_preview": { "description": "First 4,000 characters of decoded text, when the body is textual.", "type": [ "string", "null" ] }, "url": { "description": "Final URL that was fetched.", "format": "uri", "type": "string" } }, "required": [ "url", "fetched_at", "status_code", "content_type", "byte_length", "sha256", "redirect_chain", "text_preview" ], "type": "object" }, "receipt_id": { "description": "Evidence receipt identifier.", "format": "uuid", "type": "string" } }, "required": [ "receipt_id", "chain_hash", "receipt" ], "type": "object" }, "type": { "type": "string" } }, "required": [ "type" ], "type": "object" } }, "required": [ "input" ], "type": "object" } }, "builder-code": { "info": { "s": [ "cdp_sdk_server" ] }, "schema": { "$schema": "https://json-schema.org/draft/2020-12/schema", "additionalProperties": false, "properties": { "a": { "description": "App builder code", "pattern": "^[a-z0-9_]{1,32}$", "type": "string" }, "s": { "description": "Service builder codes", "items": { "pattern": "^[a-z0-9_]{1,32}$", "type": "string" }, "maxItems": 11, "type": "array" }, "w": { "description": "Wallet builder code", "pattern": "^[a-z0-9_]{1,32}$", "type": "string" } }, "type": "object" } }, "eip2612GasSponsoring": {}, "erc20ApprovalGasSponsoring": {} }, "tags": [ "bazaar", "builder-code", "eip2612GasSponsoring", "erc20ApprovalGasSponsoring" ], "sourceHost": "kairostamp.com", "lastUpdated": "2026-08-23T09:09:10.24Z", "quality": { "calls30d": 3, "uniquePayers30d": 2, "lastCalledAt": "2026-08-23T09:09:09.741Z" }, "liveness": {}, "verified": false, "featured": false, "provider": { "host": "kairostamp.com", "manifest_name": "kairostamp.com", "source": "cdp-mirror", "source_manifest_url": "https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources", "submitted_at": "2026-09-18T22:00:31.484Z" } }