# Xoserve

**Canonical:** https://apis.io/providers/xoserve/  
**Website:** https://www.xoserve.com/  
**APIs profiled:** 4

Xoserve Limited is the Central Data Services Provider (CDSP) for Great Britain's gas market — funded, governed and owned by the gas industry itself. From Solihull it operates the central register of every gas supply point in Britain and runs the systems the market clears through: UK Link, the Gemini transmission system, the Gas Enquiry Service, the Contact Management Service, SwitchStream and the Data Discovery Platform. It sits between the gas transporters, the independent gas transporters, the shippers and the retail suppliers under the Uniform Network Code (UNC) and the Data Services Contract (DSC), with further obligations under the Retail Energy Code. Britain mandated this data infrastructure, not a consumer data right: there is no CDR-style, consent-driven data portability obligation on Xoserve, and no Green Button or Consumer Data Standards implementation. Its API posture reflects that split exactly. Xoserve does publish a real developer portal — the Discovery API Platform, delivered by its service provider Correla at discoveryapiportal.correla.com — where four documented REST APIs (Shipper, Supplier, Meter Asset v1 and v2) expose meter-point-level information including proposed Formula Year Annual Quantity values, current supplier, network and meter asset detail. Anyone may browse that catalogue and export the OpenAPI documents anonymously, but nobody can call the gateway without being an eligible licensed GB gas industry party: every product requires a subscription AND approval, keys are issued only after a contract is countersigned, and the gateway returns 401 for everyone else. Consumer usage data is therefore reachable through a documented API, but only by accredited industry, never by a consumer or an agent acting on their behalf. On the other side, Xoserve publishes no open machine-readable market-data API at all — its public outputs are the free findmysupplier consumer lookup it operates and the Market Domain Data participant list as a spreadsheet download.

## Kin Score — 55.3 / 100 (developing)

Scored 2026-08-17 under rubric 0.11.0. Trend: flat (+0.0 from 55.3).

| Facet | Score |
|---|---|
| Discoverability | 81.5 |
| Contract Quality | 38.8 |
| Governance | 20.8 |
| Operational Transparency | 63.2 |
| Developer Ergonomics | 62.5 |
| Commercial Clarity | 84.2 |

Regulatory layer — **Energy & Utilities**: 40.5 (matched via tags).

## Agent readiness — 38.1 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| MCP Server | derived |
| Auth Clarity | yes |
| Idempotency | no |
| Error Semantics | documented |
| OpenAPI Examples | no |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | derived |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## APIs (4)

- **Xoserve Shipper API** — Bundled by Xoserve as the Supply Point Quantities service. Lets gas Shippers view the proposed Formula Year (Billing) Annual Quantity value for a meter point ahead of the late-M...
- **Xoserve Supplier API** — Bundled by Xoserve as the Supply Point Enquiry service, part of the Gas Enquiry Service (GES). Exposes detailed supply meter point information, filtered by MPRN, address_id or p...
- **Xoserve Meter Asset (Xoserve Meter Asset Api V1)** — Xoserve Meter Asset from Xoserve, described in OpenAPI.
- **Xoserve Meter Asset (Xoserve Meter Asset Api V2)** — Xoserve Meter Asset from Xoserve, described in OpenAPI.

## MCP servers (1)

- **Xoserve MCP server (derived candidate — no official server exists)**

## Agentic access (1)

- **Xoserve Agentic Access** — 4 operations

## Security (2)

- **Xoserve Authentication** — apiKey · 2 schemes
- **Xoserve Domain Security** — TLSv1.3 · HSTS · DMARC

## Plans (1)

- **Xoserve Plans**

## Tags

Energy, United Kingdom, Gas, Utilities, Energy Markets, Meter Data, Gas Networks, Central Data Service Provider, Data Services

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/xoserve/). Scores are computed from the provider's own public artifacts under a published rubric.