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Full detail: Where this data comes from
The New York Independent System Operator (NYISO) is the not-for-profit FERC-jurisdictional entity that operates New York State's bulk electricity grid, administers the state's wholesale energy, capacity and ancillary-services markets, and performs long-term power system planning. Formed in 1999 out of the New York Power Pool, it sits squarely in the wholesale middle of the value chain - between generators, transmission owners and interconnectors on one side and the investor-owned utilities and retail suppliers who actually bill New York consumers on the other. NYISO's API posture is the sector's classic two-speed split, and NYISO lands hard on both ends of it. Market and system data is genuinely open - the MIS public archive at mis.nyiso.com/public serves roughly sixty machine-readable report families (day-ahead and real-time LBMP, actual and forecast load, real-time fuel mix, ATC/TTC, outages, constraints, interface flows, bid data, capacity, uplift, emissions) as daily CSV and monthly ZIP with no account, no key and no referrer check, and the FERC-mandated OASIS node publishes an anonymously listable object store of transmission postings. Consumer data is the exact opposite - there is none, and none is expected, because NYISO holds no retail customer relationships. Every real REST API NYISO documents - the Finance APIs (Metering, Settlements, Invoicing) and the Metering API under api.nyiso.com - is market-participant-only, gated behind an MIS user account plus a NAESB-accredited digital certificate, and every one of those endpoints answers 401 anonymously. The United States has no consumer energy data mandate behind Green Button, and in any case Green Button binds distribution utilities, not system operators, so NYISO carries no Green Button or Consumer Data Right obligation at all.
Areas: Energy · United States · Electricity · Energy Markets · Grid · Open Data · System Operator · New York · Renewables · Emissions
Everything profiled for New York Independent System Operator (NYISO) is published on APIs.io rather than in this repository. Start at the provider page — apis.io/providers/nyiso/ — or go straight to one of the APIs or properties below.
- NYISO MIS Public Data Archive — NYISO's Market Information System public archive - the operator's flagship open data surface. Roughly sixty machine-readable report families are published…
- NYISO OASIS Postings — NYISO's Open Access Same-Time Information System (OASIS) node, the FERC Order 889/890 transmission-service transparency surface. The operator front-end at…
- NYISO Finance Metering API — The Metering component of NYISO's Finance APIs - submission and retrieval of hourly revenue-grade meter data for generators, ties and subzones, plus…
- NYISO Finance Settlements API — The Settlements component of NYISO's Finance APIs. The published guide documents GET /v1/stationPower, retrieving station power settlement data by billing…
- NYISO Finance Invoicing API — The Invoicing component of NYISO's Finance APIs, retrieving daily reconciliation data for both settlements dollars and energy volumes. The published guide…
- NYISO Metering API — NYISO's standalone Metering API, documented separately from the Finance APIs guide and served from its own root at api.nyiso.com/metering. It covers…
Each property below is a page on APIs.io carrying the machine-readable artifact and what it says.
The data models the API reads and writes.
- NYISO Day-Ahead Ancillary Services Prices record
- NYISO Day-Ahead Market Generator LBMP record
- NYISO Day-Ahead Market Zonal LBMP record
- NYISO ISO Load Forecast record
- NYISO Day-Ahead Scheduled Outages record
- NYISO Real-Time Actual Load record
- NYISO Integrated Real-Time Actual Load record
- NYISO Real-Time Market Zonal LBMP record
- NYISO Real-Time Ancillary Services Prices record
- NYISO Real-Time Fuel Mix record
Authentication, trust centre, and vulnerability disclosure.
Links to the company's own pages. This repository publishes no copy of their specifications — the canonical document is theirs and lives at the URLs below.
Kin Score 28.2 — thin · rubric 0.24.0 · scored 2026-10-17
| Facet | Score |
|---|---|
| Discoverability | 71.4 |
| Contract quality | 12.0 |
| Contract governance | 18.2 |
| Operational transparency | 7.9 |
| Developer ergonomics | 54.2 |
| Access clarity | 17.1 |
Agent readiness 6.3 — agent-aware
| Agent-readiness dimension | Result |
|---|---|
| Spec Presence | — |
| Agentic Access | — |
| Reversibility Documented | — |
| MCP Server | — |
| Auth Clarity | bearer (partial credit) |
| Idempotency | — |
| Error Semantics | documented (partial credit) |
| OpenAPI Examples | — |
| Rate Limit Signal | — |
| Event Surface Described | — |
| Agent Skills | derived (partial credit) |
| Well Known Catalog | — |
| Consent Identity | — |
| Agent Card | — |
| Dry Run Mode | — |
| Delegated Identity | — |
| Protected Resource Metadata | — |
| Dynamic Client Registration | — |
| Agentic Commerce | — |
Regulatory alignment 17.2 — Energy & Utilities
The rubric is published at github.com/api-evangelist/kin-score. The per-check breakdown behind these numbers — which checks were earned, partial or missed — along with score history and how this provider compares to its peers, is available at apis.io/providers/nyiso/.
API Evangelist profiles a company's public API surface the way a developer would find it: the website, developer portal and documentation, the specifications it publishes, its public repositories, and its pricing, status and changelog pages. From that it derives the properties above — contracts split per API, workflows, schemas, collections, governance rules, plans and rate limits — and scores them against the published Kin Score rubric.
The artifacts are published on APIs.io, not in this repository. This repository is the public record for New York Independent System Operator (NYISO): the place to say something is wrong, missing or out of date, and to ask for a re-score or a removal.
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