# Cheniere LNG Connection Pipeline Informational Postings API **Canonical:** https://apis.io/apis/cheniere-energy/lng-connection/ **Provider:** Cheniere Energy — https://apis.io/providers/cheniere-energy/ **Base URL:** https://lngconnectionapi.cheniere.com **Documentation:** https://lngconnection.cheniere.com Cheniere LNG Connection Pipeline Informational Postings API is one of 2 APIs that [Cheniere Energy](https://apis.io/providers/cheniere-energy/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. Tagged areas include Natural Gas, Pipelines, FERC, NAESB, and Capacity. The published artifact set on APIs.io includes an OpenAPI specification, authentication docs, and rate-limit docs. The public, unauthenticated JSON API behind Cheniere's LNG Connection site, which publishes the FERC-mandated informational postings for Cheniere Creole Trail Pipeline, L.P. (tspNo 200) and Cheniere Corpus Christi Pipeline, L.P. (tspNo 400). It serves operationally available and unsubscribed capacity by NAESB nomination cycle, firm and interruptible transactional reporting, the quarterly Index of Customers, daily and comingled gas quality, posted imbalances, operational notices, and the location, station and contact reference data. 35 operations, all data operations read-only, no credential of any kind. Cheniere publishes no OpenAPI and no documentation for it; the specification in this repository was derived by API Evangelist from the provider's own client bundle plus live anonymous probes on 2026-09-06 and is labelled as derived. ## Operations (35) | Method | Path | Summary | |---|---|---| | GET | `/api/Page/GetPages` | List the posting page tree and the TSPs served | | GET | `/api/Page/GetLinkByPageId` | Get the external link attached to a posting page | | GET | `/api/Capacity/GetCycles` | List NAESB nomination cycles | | GET | `/api/Capacity/GetLocations` | List capacity posting locations for a date range | | GET | `/api/Capacity/GetCapacity` | Operationally available capacity for a gas day, cycle and location | | GET | `/api/Capacity/GetUnsubscribed` | Unsubscribed firm capacity for a gas day | | GET | `/api/GasQuality/GetLocations` | List locations with gas-quality postings | | GET | `/api/GasQuality/GetGasQuality` | Daily gas quality for a location and date range | | GET | `/api/DailyComingled/GetDailyComingled` | Daily comingled system gas quality | | GET | `/api/Mainline/GetMainline` | Mainline gas-quality report | | GET | `/api/Transactional/GetFirm` | Firm transactional reporting | | GET | `/api/Transactional/GetInteruptible` | Interruptible transactional reporting | | GET | `/api/Transactional/GetCapacityRelease` | Capacity release transactional reporting | | GET | `/api/IndexOfCustomers/Quarter` | List the quarters with an Index of Customers posting | | GET | `/api/IndexOfCustomers/Get` | Index of Customers for a quarter | | POST | `/api/IndexOfCustomers/ExportToExcel` | Export an Index of Customers result set to Excel | | GET | `/api/PostedImbalances/GetPeriods` | List the periods with a posted imbalance report | | GET | `/api/PostedImbalances/Get` | Posted imbalances for a period | | GET | `/api/Notice/GetActiveSummaryNotices` | Active operational notices | | GET | `/api/Notice/GetNoticesByPageId` | Notices attached to a posting page | | GET | `/api/Notice/GetNoticeById` | Fetch one notice | | GET | `/api/Notice/FilterNotices` | Filter notices by id range, type and date range | | GET | `/api/Notice/Download` | Download a notice as a file | | GET | `/api/Document/GetDocumentByPageId` | Documents attached to a posting page | | GET | `/api/Document/GetEmbeddedDocumentByPageId` | Embedded documents for a posting page | | POST | `/api/Document/Export` | Export a grid result set to a document | | GET | `/api/DocumentManager/DownloadDocumentFileById` | Download a posted document by id | | GET | `/api/LocationDownload/Get` | Full location master list for a TSP | | GET | `/api/Station/GetStationsByCompanyId` | Compressor and metering stations | | GET | `/api/InformationContact/GetContacts` | Published informational-postings contacts | | GET | `/api/InformationContact/GetInformations` | Narrative informational postings | | GET | `/api/Weather/GetWeatherLocations` | Weather locations for the system map | | GET | `/api/Legend/GetLegendByMetaId` | Legend text for a report | | GET | `/api/Footer/GetReportFooterByMetaId` | Footer text for a report | | POST | `/api/Logger/Exceptions` | Report a client-side exception | ## Machine-readable artifacts (14) - **OpenAPI** — https://raw.githubusercontent.com/api-evangelist/cheniere-energy/refs/heads/main/openapi/cheniere-energy-lng-connection.yml - **Overlay** — https://raw.githubusercontent.com/api-evangelist/cheniere-energy/refs/heads/main/overlays/cheniere-energy-lng-connection-overlay.yaml - **MCPServer** — https://raw.githubusercontent.com/api-evangelist/cheniere-energy/refs/heads/main/mcp/cheniere-energy-mcp.yml - **ToolCrosswalk** — https://raw.githubusercontent.com/api-evangelist/cheniere-energy/refs/heads/main/mcp/cheniere-energy-tool-crosswalk.yml - **Authentication** — https://raw.githubusercontent.com/api-evangelist/cheniere-energy/refs/heads/main/authentication/cheniere-energy-authentication.yml - **ErrorCatalog** — https://raw.githubusercontent.com/api-evangelist/cheniere-energy/refs/heads/main/errors/cheniere-energy-problem-types.yml - **Conventions** — https://raw.githubusercontent.com/api-evangelist/cheniere-energy/refs/heads/main/conventions/cheniere-energy-conventions.yml - **DataModel** — https://raw.githubusercontent.com/api-evangelist/cheniere-energy/refs/heads/main/data-model/cheniere-energy-data-model.yml - **Conformance** — https://raw.githubusercontent.com/api-evangelist/cheniere-energy/refs/heads/main/conformance/cheniere-energy-conformance.yml - **Lifecycle** — https://raw.githubusercontent.com/api-evangelist/cheniere-energy/refs/heads/main/lifecycle/cheniere-energy-lifecycle.yml - **RateLimits** — https://raw.githubusercontent.com/api-evangelist/cheniere-energy/refs/heads/main/rate-limits/cheniere-energy-rate-limits.yml - **Plans** — https://raw.githubusercontent.com/api-evangelist/cheniere-energy/refs/heads/main/plans/cheniere-energy-plans-pricing.yml - **AgentSkill** — https://raw.githubusercontent.com/api-evangelist/cheniere-energy/refs/heads/main/skills/_index.yml - **Website** — https://lngconnection.cheniere.com ## Other Cheniere Energy APIs (1) - [Cheniere Energy Website](https://apis.io/apis/cheniere-energy/website/) ## Tags Natural Gas, Pipelines, FERC, NAESB, Capacity, Gas Quality, Informational Postings, Open Data, Energy --- Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/cheniere-energy/lng-connection/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/cheniere-energy/.