{"name":"MusCap","contract_version":"muscap.external-agent.v1","environment":"staging","deployment_id":"remote-mcp-20261028-r2","canonical_origin":"https://staging.muscap.me","api_origin":"https://api-staging.muscap.me","authorization_origin":"https://staging.muscap.me","music_policy":{"testing":20,"formal_gray":12,"extension":5},"image_submission":"available","stop_boundary":"private_completed_work","mcp_distribution":"controlled_test_not_publicly_published","a2a":"unsupported","discovery_version":"muscap.agent-discovery.v1","creation_contract_status":"account_balance","capabilities":[{"code":"service_information","status":"available","reason":"deterministic_public_information"},{"code":"account_connection","status":"available","reason":"ready"},{"code":"text_material_delivery","status":"available","reason":"include_in_first_explicit_authorization"},{"code":"music_creation","status":"available","reason":"authorized_owner_account_balance"},{"code":"spoken_creation","status":"available","reason":"agent_full_text_owner_confirms_rights"},{"code":"image_submission","status":"available","reason":"private_own_completed_work_images_requires_explicit_scope"},{"code":"account_creative","status":"available","reason":"owner_account_across_creators_requires_explicit_scope"},{"code":"controlled_download","status":"disabled","reason":"agent.delivery_download_decision_pending"},{"code":"publication","status":"unsupported","reason":"human_only"},{"code":"payment","status":"unsupported","reason":"human_only"}],"origins_verified":false,"origins_configured":true,"human_documentation":"https://staging.muscap.me/agents","openapi":"https://api-staging.muscap.me/api/v3/agent/openapi.json","connection":{"status":"available","reason":"ready","type":"agent_initiated_one_time_pairing","request_endpoint":"https://api-staging.muscap.me/api/v2/agent-connect/requests","authorization_url_template":"https://staging.muscap.me/settings/external-agents?session={session_id}","poll_endpoint":"https://api-staging.muscap.me/api/v2/agent-connect/poll","token_endpoint":"https://api-staging.muscap.me/api/v2/agent-connect/token","fallback_code":{"format":"four_digits","ttl_seconds":1200,"purpose":"locate_invitation_not_authorization"},"invitation_ttl_seconds":1200,"collection_ttl_seconds_after_approval":300,"first_credentials_endpoint":"https://api-staging.muscap.me/api/v2/agent-connect/poll","token_endpoint_purpose":"refresh_only","status_endpoint":"https://api-staging.muscap.me/api/v2/agent-connect/status","quickstart_endpoint":"https://api-staging.muscap.me/api/v3/agent/guide","bootstrap_endpoint":"https://api-staging.muscap.me/api/v3/agent/bootstrap","user_confirmations_per_new_connection":1,"multiple_agents_per_account":true,"original_credential_recovery":{"when":"saved_refresh_missing_or_unusable_not_ordinary_access_expiry","request_endpoint":"https://api-staging.muscap.me/api/v2/agent-connect/requests","owner_confirmation_endpoint_template":"https://api-staging.muscap.me/api/v2/agent-connect/sessions/{session_id}/recover","delivery_endpoint":"https://api-staging.muscap.me/api/v2/agent-connect/poll","same_client_and_grant":true,"old_credentials_invalidated_on_confirmation":true,"opening_invitation_does_not_revoke":true},"delivery_recovery":{"opt_in_field":"delivery_secret","client_generates_random_bytes":32,"ttl_seconds":120,"requires_poll_secret_and_delivery_secret":true,"returns_same_credentials":true,"available_until_first_token_use":true},"access_ttl_seconds":3600,"refresh_ttl_seconds":2592000,"poll_interval_seconds":8,"user_confirmation_required":true,"identity_assurance":"agent_product_and_installation_are_self_reported","information_endpoint":"https://api-staging.muscap.me/api/v3/agent/capabilities"},"rules":{"human_only":["login","new_permissions","extra_payment","publication","visibility","capsule"],"unsupported":["cross_user_collaboration","arbitrary_historical_memory_access","existing_media_derivative","finished_work_import","arbitrary_asset_upload"],"creative_collaboration":{"available_now":true,"same_creation_engine":true,"context_scope":"current_work_persisted_context","a2a_protocol_available":false,"description":"创作协作使用当前作品的持久上下文；不等于跨用户合作，也不代表开放A2A协议或任意历史记忆。"},"results_per_creation":1,"stop_boundary":"private_completed_work","creation_available_now":true,"material_delivery_available_now":true,"account_creative_available_now":true,"delete_available":false},"input_guidance":["只了解服务时不建稿、不登录、不扣创作额度。","开始创作时可以没有方向、只有想法、部分歌词或完整歌词；不要求先备齐材料。","补充默认融合当前稿；只有明确推翻才重写；每个作品单独记忆。","完整歌词仍可补充或直接采用；普通创意决定不重复要求用户确认。"],"limitations":["任何本人注册并授权音乐创作的Agent使用本人账户余额，无厂商名单、首数或测试截止时间；每次按报价预留，成功结算，失败按账务规则释放；额度不足保留进度停止。","不保证任意Agent自动发现平台；客户端需有HTTP能力或用户同意安装的MCP适配器。","用户页面关闭后，平台继续已受理任务；外部Agent进程退出后不保证继续自主推理。","本阶段是小范围测试，不启用正式域名，不公开源码或提供公开GitHub安装包；缺少公开仓库不代表平台不存在。"],"service_summary":"MusCap 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