# TROLIE

**Canonical:** https://apis.io/providers/trolie/  
**Website:** https://trolie.energy/  
**APIs profiled:** 2

TROLIE (Transmission Ratings and Operating Limits Information Exchange) is an open-source LF Energy project, hosted under LF Projects, that defines an OpenAPI-based REST specification for exchanging transmission facility ratings and operating limits. It responds to FERC Order 881, which requires North American Transmission Owners, Transmission Operators, Transmission Providers and Reliability Coordinators to exchange ambient-adjusted and forecasted ratings. The project publishes the 1.0 specification, usage examples for forecast, real-time, seasonal and temporary ratings, decision records, a conformance suite and a Java client SDK on GitHub.

## Kin Score — 43.3 / 100 (developing)

Scored 2026-10-09 under rubric 0.23.0.

| Facet | Score |
|---|---|
| Discoverability | 57.1 |
| Contract Quality | 64.3 |
| Contract Governance | 35.6 |
| Operational Transparency | 28.9 |
| Developer Ergonomics | 56.5 |
| Access Clarity | 0.0 |

Regulatory layer — **Energy & Utilities**: 27.9 (matched via tags).

## Agent readiness — 39.7 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | negotiable |
| Idempotency | no |
| Error Semantics | verified |
| OpenAPI Examples | verified |
| Rate Limit Signal | verified |
| Event Surface Described | no |
| Agent Skills | derived |
| Well Known Catalog | yes |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |
| Delegated Identity | no |
| Protected Resource Metadata | no |
| Dynamic Client Registration | no |
| Agentic Commerce | no |

## APIs (6)

- **TROLIE Forecasting API** — The Forecasting API operations define the exchange of forecasted ratings, including the 240-hour-ahead forecasted AAR data exchange required by FERC Order 881. The operations su...
- **TROLIE Monitoring Sets API** — [Monitoring Sets](https://trolie.energy/concepts#monitoring-sets) are named sets of power system resources that may be used to filter ratings and limits returned by queries agai...
- **TROLIE Seasonal API** — Seasonal ratings are static ratings associated with extended durations, typically months. These are typically used in both planning and operations. Power system resources that a...
- **TROLIE Seasonal Overrides API** — A Seasonal Override instructs the system to use a temporary static rating instead of any concurrent Seasonal Rating for a resource. A typical use case is a so-called 'de-rate' d...
- **TROLIE Temporary AAR Exceptions API** — A [Temporary AAR Exception](https://trolie.energy/concepts#temporary-aar-exception) is provided by the Ratings Provider when a Ratings Obligation cannot be fulfilled, due to som...
- **TROLIE Realtime API** — If permitted by the Clearinghouse Provider, its Ratings Providers can use these functions to exchange real-time ratings, supplementing or replacing traditional telemetry protoco...

## Agentic access (1)

- **Trolie Agentic Access** — 28 operations · 13 acting · 3 human-in-the-loop

## Security (2)

- **Trolie Authentication** — oauth2 · 1 scheme
- **Trolie Domain Security** — TLSv1.3 · HSTS

## Plans (1)

- **Trolie Plans Pricing**

## Tags

Company, Energy, Electric Grid, Transmission, Open Standards, OpenAPI, LF Energy, Open Source

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