{
  "id": "icalendar-compose",
  "name": "Standalone iCalendar Artifact Composer",
  "description": "Create exact UTF-8 iCalendar text for up to 64 supplied standalone date-only or UTC events, with caller UIDs/stamps, escaped literal text and byte-bounded folding; no account changes or invitations.",
  "category": "structured",
  "priceUsd": "0.005",
  "pricingStatus": "proposed-unverified",
  "pricing": {
    "unit": "one successful operation call",
    "proposedNominalUsd": "0.005",
    "sixDecimalTokenBaseUnits": "5000",
    "subscription": false,
    "includesPayerWalletOrNetworkFees": false,
    "liveQuoteVerified": false,
    "condition": "Actual SDK challenge is authoritative only within the caller's explicit authorization; configured six-decimal token peg is an operator assertion, not a conversion guarantee."
  },
  "intents": [
    "Create an ICS file from supplied standalone events",
    "Encode all-day or UTC calendar events with exact literal text and caller identifiers"
  ],
  "whenToUse": [
    "Create an ICS file from supplied standalone events",
    "Encode all-day or UTC calendar events with exact literal text and caller identifiers"
  ],
  "whenNotToUse": [
    "Calendar booking, finding free time, sending invitations or proving import success",
    "Recurrence, attendees, organizers, alarms, URLs, attachments, custom properties, time zones or floating local time",
    "Uploading artifacts, executing database statements, sending invitations, accessing calendars or changing remote state"
  ],
  "capabilities": [
    "Declared profile: rfc5545-standalone-events-v1",
    "Strict Gregorian years 1900–2199; explicit exclusive end, unique caller UID and UTC DTSTAMP",
    "TEXT escaping, fixed property order, final CRLF and Unicode-scalar-safe folding at 75 UTF-8 octets including continuation space",
    "Empty supplied optional text emitted; absent fields omitted; no generated identifiers or timestamps",
    "Deterministic supplied-input-only artifact; no network, filesystem, database, shell, clock or randomness"
  ],
  "limits": {
    "inputBytes": 100000,
    "outputBytes": 400000,
    "jsonNodes": 12000,
    "depth": 20,
    "events": 64,
    "summaryCodePoints": 1000,
    "locationCodePoints": 1000,
    "descriptionCodePoints": 8000,
    "textBytes": 60000,
    "wireBytes": 120000,
    "physicalLines": 4096,
    "uidBytes": 128,
    "years": "1900–2199",
    "profile": "rfc5545-standalone-events-v1"
  },
  "related": [
    "recurrence-dates-expand",
    "timezone-convert",
    "timestamp-convert"
  ],
  "errorCodes": [
    "INPUT_LIMIT",
    "OUTPUT_LIMIT",
    "COMPLEXITY_LIMIT",
    "INVALID_JSON",
    "INVALID_NUMBER",
    "INVALID_UNICODE",
    "UNSAFE_KEY",
    "DUPLICATE_UID",
    "INVALID_CALENDAR_DATE",
    "INVALID_UTC_TIME",
    "INVALID_INTERVAL",
    "INVALID_TEXT_CONTROL",
    "TEXT_LIMIT",
    "CALENDAR_OUTPUT_LIMIT"
  ],
  "requirementsProfile": {
    "format": "declared-requirements-v1",
    "facts": {
      "execution.suppliedCode": false,
      "execution.remoteMutation": false,
      "execution.llmInference": false,
      "execution.paidMcp": false,
      "verification.semanticTruth": false,
      "verification.sourceAuthenticity": false,
      "verification.liveVulnerabilities": false,
      "numbers.arbitraryPrecisionJson": false,
      "numbers.model": "ieee754-binary64",
      "privacy.requestBodyPersisted": false,
      "execution.deterministic": true,
      "execution.networkAccess": false,
      "privacy.resultBodyPersisted": false,
      "payment.x402": true,
      "payment.mpp": true,
      "operation.id": "icalendar-compose",
      "operation.category": "structured",
      "limit.httpRequestBytes": 131072,
      "limit.requestBytes": 100000,
      "limit.responseBytes": 524288,
      "limit.resultBytes": 400000,
      "limit.jsonDepth": 20,
      "limit.jsonNodes": 12000,
      "icalendar.profile": "rfc5545-standalone-events-v1",
      "icalendar.maxEvents": 64,
      "icalendar.maxTextBytes": 60000,
      "icalendar.maxWireBytes": 120000,
      "icalendar.maxPhysicalLines": 4096,
      "icalendar.maxPhysicalLineBytes": 75,
      "icalendar.dateYears": "1900-2199",
      "icalendar.endConvention": "exclusive",
      "icalendar.uidAndStampSupplied": true,
      "icalendar.recurringEvents": false,
      "icalendar.invitationDelivery": false,
      "icalendar.accountAccess": false,
      "icalendar.importAcceptanceVerified": false,
      "input.events.maxItems": 64,
      "input.events.minItems": 1
    },
    "unknownPolicy": "Undeclared requirements are unknown, never compatible. Matching declared facts does not establish semantic fit or input validity.",
    "preflight": "/preflight"
  },
  "documentation": "/reference/tools/icalendar-compose.md",
  "serviceContract": "/reference/services/icalendar-compose.json",
  "errors": [
    {
      "status": 400,
      "meaning": "Malformed JSON, missing/invalid idempotency key, or payment identifier mismatch",
      "retry": "Correct the request before payment"
    },
    {
      "status": 402,
      "meaning": "Payment challenge or rejected payment",
      "retry": "Use official protocol SDK; inspect payment outcome before another payment"
    },
    {
      "status": 409,
      "meaning": "Idempotency conflict, duplicate proof, or PAYMENT_UNCERTAIN",
      "retry": "Keep original key, body, and proof; reconcile uncertainty with operator; never blindly repay"
    },
    {
      "status": 413,
      "meaning": "Input or generated output too large",
      "retry": "Reduce input; no payment attempted for validation failure"
    },
    {
      "status": 415,
      "meaning": "Unsupported media type or compression",
      "retry": "Send uncompressed application/json"
    },
    {
      "status": 422,
      "meaning": "Schema or service-specific semantic validation failure",
      "retry": "Correct input using returned error code; no payment attempted"
    },
    {
      "status": 429,
      "meaning": "Request/payment-attempt rate exceeded",
      "retry": "Wait for rate limit window; preserve existing payment identity"
    },
    {
      "status": 503,
      "meaning": "Payment configuration/provider/state unavailable, or live DNS preparation failed before settlement",
      "retry": "Check readiness; DNS preparation failures may retry the identical key/body/credential only; uncertainty requires reconciliation"
    }
  ],
  "numericPrecision": "JavaScript IEEE-754 numbers; use strings for large integer IDs/exact decimals where the schema accepts strings. No lossless numeric parsing.",
  "paymentWorkflow": {
    "discoveryOnly": false,
    "supportedProtocols": [
      "x402",
      "mpp"
    ],
    "x402": {
      "credentialHeader": "PAYMENT-SIGNATURE",
      "challengeHeader": "PAYMENT-REQUIRED",
      "receiptHeader": "PAYMENT-RESPONSE",
      "version": 2,
      "scheme": "exact",
      "paymentIdentifier": "payment-identifier extension MUST equal the HTTP Idempotency-Key",
      "sdk": "@x402/core with @x402/evm"
    },
    "mpp": {
      "supported": true,
      "credentialHeader": "Authorization",
      "challengeHeader": "WWW-Authenticate",
      "receiptHeader": "Payment-Receipt",
      "method": "tempo",
      "intent": "charge",
      "sdk": "mppx",
      "tokenDecimals": 6
    },
    "steps": [
      "Check configured readiness and the exact service schema",
      "Generate a fresh random Idempotency-Key for this operation; never use a discovery probe fixture for purchases",
      "Send valid input without a credential to obtain the official protocol challenge",
      "Use the official SDK and authorized wallet to fulfill the challenge",
      "Retry only with identical key, body, protocol and credential",
      "On PAYMENT_UNCERTAIN stop and request operator reconciliation; never blindly pay again"
    ],
    "versionedRetries": "Request fingerprint includes service release version. Retries across a version upgrade can conflict; coordinate upgrades outside the 24-hour replay window and reconcile pending attempts.",
    "docs": "/llms.txt"
  },
  "method": "POST",
  "paths": {
    "x402": "/v1/x402/icalendar-compose",
    "mpp": "/v1/mpp/icalendar-compose"
  },
  "inputSchema": {
    "$schema": "https://json-schema.org/draft/2020-12/schema",
    "description": "Declared profile: rfc5545-standalone-events-v1",
    "type": "object",
    "properties": {
      "events": {
        "minItems": 1,
        "maxItems": 64,
        "type": "array",
        "items": {
          "type": "object",
          "properties": {
            "uid": {
              "type": "string",
              "minLength": 1,
              "maxLength": 128,
              "pattern": "^[A-Za-z0-9._@+\\-]+$"
            },
            "dtstamp": {
              "type": "string",
              "maxLength": 20
            },
            "summary": {
              "type": "string",
              "minLength": 1,
              "maxLength": 2000,
              "description": "Literal text, at most 1,000 Unicode code points"
            },
            "description": {
              "type": "string",
              "maxLength": 16000,
              "description": "Literal text, at most 8,000 Unicode code points"
            },
            "location": {
              "type": "string",
              "maxLength": 2000,
              "description": "Literal text, at most 1,000 Unicode code points"
            },
            "interval": {
              "oneOf": [
                {
                  "type": "object",
                  "properties": {
                    "kind": {
                      "type": "string",
                      "const": "date"
                    },
                    "start": {
                      "type": "string",
                      "maxLength": 10
                    },
                    "endExclusive": {
                      "type": "string",
                      "maxLength": 10
                    }
                  },
                  "required": [
                    "kind",
                    "start",
                    "endExclusive"
                  ],
                  "additionalProperties": false
                },
                {
                  "type": "object",
                  "properties": {
                    "kind": {
                      "type": "string",
                      "const": "utc"
                    },
                    "start": {
                      "type": "string",
                      "maxLength": 20
                    },
                    "endExclusive": {
                      "type": "string",
                      "maxLength": 20
                    }
                  },
                  "required": [
                    "kind",
                    "start",
                    "endExclusive"
                  ],
                  "additionalProperties": false
                }
              ]
            }
          },
          "required": [
            "uid",
            "dtstamp",
            "summary",
            "interval"
          ],
          "additionalProperties": false
        }
      }
    },
    "required": [
      "events"
    ],
    "additionalProperties": false
  },
  "outputSchema": {
    "type": "object",
    "required": [
      "operation",
      "version",
      "result",
      "provenance"
    ],
    "properties": {
      "operation": {
        "const": "icalendar-compose",
        "type": "string"
      },
      "version": {
        "const": "0.29.0",
        "type": "string"
      },
      "result": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "type": "object",
        "properties": {
          "mediaType": {
            "type": "string",
            "const": "text/calendar; charset=UTF-8"
          },
          "ics": {
            "type": "string"
          },
          "utf8Bytes": {
            "type": "integer",
            "minimum": 0,
            "maximum": 9007199254740991
          },
          "eventCount": {
            "type": "integer",
            "minimum": 1,
            "maximum": 64
          }
        },
        "required": [
          "mediaType",
          "ics",
          "utf8Bytes",
          "eventCount"
        ],
        "additionalProperties": false,
        "description": "Artifact result for declared profile: rfc5545-standalone-events-v1"
      },
      "provenance": {
        "type": "object",
        "required": [
          "inputSha256",
          "outputSha256",
          "deterministic",
          "externalRequests"
        ],
        "properties": {
          "inputSha256": {
            "type": "string",
            "pattern": "^[a-f0-9]{64}$"
          },
          "outputSha256": {
            "type": "string",
            "pattern": "^[a-f0-9]{64}$"
          },
          "deterministic": {
            "const": true
          },
          "externalRequests": {
            "const": 0
          }
        }
      }
    },
    "additionalProperties": false
  },
  "exampleInput": {
    "events": [
      {
        "uid": "review-1@example.invalid",
        "dtstamp": "2026-10-05T00:00:00Z",
        "summary": "Release, review",
        "interval": {
          "kind": "date",
          "start": "2026-10-06",
          "endExclusive": "2026-10-07"
        }
      }
    ]
  },
  "exampleResponse": {
    "operation": "icalendar-compose",
    "version": "0.29.0",
    "result": {
      "mediaType": "text/calendar; charset=UTF-8",
      "ics": "BEGIN:VCALENDAR\r\nVERSION:2.0\r\nPRODID:-//Agent Service Market//Calendar v1//EN\r\nCALSCALE:GREGORIAN\r\nBEGIN:VEVENT\r\nUID:review-1@example.invalid\r\nDTSTAMP:20261005T000000Z\r\nDTSTART;VALUE=DATE:20261006\r\nDTEND;VALUE=DATE:20261007\r\nSUMMARY:Release\\, review\r\nEND:VEVENT\r\nEND:VCALENDAR\r\n",
      "utf8Bytes": 278,
      "eventCount": 1
    },
    "provenance": {
      "inputSha256": "67118ef5cf393e82525bbb883eb96fa446c6e40b85e50ed539246327a6c916a3",
      "outputSha256": "53ec068d2fa3e46651c70748a9c2cfcab39631bb7d0e5dd3a160cd4bce4fbc46",
      "deterministic": true,
      "externalRequests": 0
    }
  },
  "requiredHeaders": {
    "Content-Type": "application/json",
    "Idempotency-Key": "random 16–128 character operation identifier"
  },
  "fixedExample": "/reference/examples/icalendar-compose.json",
  "execution": {
    "deterministic": true,
    "externalRequests": 0,
    "maxExternalRequests": 0,
    "resultSnapshotPersisted": false,
    "fixedExampleIsIllustrativeSnapshot": false,
    "requiresPayment": true,
    "supportsMcpExecution": false
  },
  "releaseSnapshot": {
    "format": "static-release-reference-v1",
    "sourceVersion": "0.29.0",
    "sourceRegistrySha256": "a2b5ec09bf6c38b9d2879d746a4fded374f5928b445377b0270ef6aa8e6cac65",
    "generatedAt": "2026-10-06T15:38:00Z",
    "releaseAcceptance": "not-verified-by-generator",
    "runtimeReadiness": "not-evaluated",
    "livePaymentsVerified": false,
    "indexingVerified": false,
    "apiOrigin": null,
    "notice": "Build-time release reference. Runtime readiness, deployment, payment settlement and external indexing are not evaluated here. Prices are proposed; this file cannot authorize execution or payment."
  }
}