# char.gy OCPI CPO Roaming API

**Canonical:** https://apis.io/apis/chargy/chargy-ocpi-cpo-api/  
**Provider:** char.gy — https://apis.io/providers/chargy/  
**Base URL:** https://char.gy/ocpi/cpo  
**Documentation:** https://char.gy/us/partners

char.gy OCPI CPO Roaming API is one of 2 APIs that [char.gy](https://apis.io/providers/chargy/) publishes on the [APIs.io](https://apis.io/) network. Tagged areas include EV Charging, OCPI, Roaming, Charge Point Operator, and Sessions. The published artifact set on APIs.io includes authentication docs and a support channel.

char.gy's commercial Open Charge Point Interface implementation in the Charge Point Operator role, used so that another network's drivers can authorise, charge and be settled on char.gy infrastructure. char.gy publishes no documentation for it at all — its existence was established by two independent signals. First, https://char.gy/robots.txt explicitly disallows /ocpi/, /api/, /webhooks/, /account/ and /users/. Second, anonymous probes on 2026-07-27 returned HTTP 401 with the response header `www-authenticate: Token realm="OCPI"` and the body {"error":"HTTP Token: Access denied."} on GET /ocpi/cpo/versions, /ocpi/cpo/2.1.1/locations, /ocpi/cpo/2.2.1/locations, /ocpi/cpo/2.2.1 /tariffs, /ocpi/cpo/2.2.1/sessions, /ocpi/cpo/2.2.1/cdrs and /ocpi/cpo/2.2.1/credentials, while control paths /ocpi/, /ocpi/cpo/ nonsense-xyz and /ocpi/xyz/versions returned 404 from the same host in the same sweep — so the 401s are real routes, not a blanket wall. Version support is directly observable: /ocpi/cpo/2.2/credentials returned HTTP 200 with the OCPI error envelope {"status_code":3002,"status_message": "Unsupported version"}, whereas the 2.2.1 and 2.1.1 paths returned 401, which means char.gy speaks OCPI 2.2.1 and 2.1.1 in the CPO role and explicitly rejects 2.2. No eMSP-role surface was found (/ocpi/emsp/versions → 404). Access is partner-only: an OCPI credentials handshake following a commercial roaming agreement. There is no signup, no sandbox, no published price and no developer registration — the only published contact route anywhere near the API surface is support@char.gy.

## Machine-readable artifacts (6)

- **Authentication** — https://raw.githubusercontent.com/api-evangelist/chargy/refs/heads/main/authentication/chargy-authentication.yml
- **ErrorCatalog** — https://raw.githubusercontent.com/api-evangelist/chargy/refs/heads/main/errors/chargy-error-codes.yml
- **Specification** — https://github.com/ocpi/ocpi
- **Partners** — https://char.gy/us/partners
- **Support** — https://help.char.gy/
- **TermsOfService** — https://char.gy/us/terms-of-use

## Other char.gy APIs (1)

- [char.gy Open Charge Point Data API](https://apis.io/apis/chargy/chargy-open-charge-point-data-api/)

## Tags

EV Charging, OCPI, Roaming, Charge Point Operator, Sessions, CDRs, United Kingdom

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/chargy/chargy-ocpi-cpo-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/chargy/.