# PJM Interconnection

**Canonical:** https://apis.io/providers/pjm/  
**Website:** https://www.pjm.com/  
**APIs profiled:** 6

PJM Interconnection is the regional transmission organization (RTO) that operates the largest competitive wholesale electricity market in the United States, coordinating the movement of electricity across all or parts of Delaware, Illinois, Indiana, Kentucky, Maryland, Michigan, New Jersey, North Carolina, Ohio, Pennsylvania, Tennessee, Virginia, West Virginia and the District of Columbia for roughly 67 million people. PJM sits at the wholesale layer of the energy value chain — it has no retail customers, so no Green Button, ESPI or consumer data-sharing obligation applies to it. Its API posture is honestly "rich data, universally gated": PJM publishes a large machine-readable market data catalogue through the Data Miner 2 API at https://api.pjm.com/api/v1 and an Azure API Management developer portal at https://apiportal.pjm.com, but every feed returns HTTP 401 anonymously and a free subscription key is only issued after a PJM Tools account is registered and approved by a Customer Account Manager. Its one genuinely mandated interface is the FERC Order 889 / NAESB WEQ OASIS node, which is verifiably live and standards-conformant at https://pjmoasis.pjm.com, though template submission also requires an authenticated PJM SSO session. One genuinely anonymous PJM REST API does exist and is easy to miss: the Messages public web service at https://messages.pjm.com/messages/rest/public/messages, linked as "Web Service" from the Upcoming Changes page, returns the planned-outage and impact notices for the whole PJM tool estate with no credential, in XML or JSON.

## Kin Score — 51.6 / 100 (developing)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 51.6).

| Facet | Score |
|---|---|
| Discoverability | 92.6 |
| Contract Quality | 9.9 |
| Governance | 33.3 |
| Contract Governance | 33.3 |
| Operational Transparency | 76.3 |
| Developer Ergonomics | 70.8 |
| Commercial Clarity | 44.7 |
| Access Clarity | 44.7 |

Regulatory layer — **Energy & Utilities**: 38.5 (matched via tags).

## Agent readiness — 20.1 (agent-aware)

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

## APIs (6)

- **PJM Data Miner 2 API** — PJM's public wholesale market and system data catalogue, exposed as a REST API behind Azure API Management. Feeds include day-ahead and real-time hourly and five-minute LMPs, an...
- **PJM Messages Public Web Service** — The only fully anonymous PJM REST API found on the public surface. It backs the PJM Upcoming Changes page and returns the current planned-outage, delayed-data and impact notices...
- **PJM OASIS Template API** — PJM's Open Access Same-Time Information System (OASIS) node, the FERC Order 889 obligation implemented against the NAESB Wholesale Electric Quadrant business practice standards....
- **PJM Browserless Authentication API** — The REST authentication front door for every browserless/API integration with PJM eTools. A client POSTs to the PJM single sign-on service with X-OpenAM-Username and X-OpenAM-Pa...
- **PJM InSchedule Browserless API** — The browserless REST interface to PJM InSchedule, the eTool market participants use to submit and retrieve bilateral internal energy transaction schedules and contracts. PJM's b...
- **PJM eDART Browserless API** — The browserless XML-over-HTTP interface to eDART, PJM's Dispatcher Applications and Reporting Tool, used by transmission owners and generation owners to file and query transmiss...

## Security (3)

- **Pjm Authentication** — apiKey/custom-session-token/mutualTLS/none · 5 schemes
- **Pjm Domain Security** — TLSv1.3 · HSTS · DMARC
- **Pjm Vulnerability Disclosure** — security.txt · contact published

## Tags

Energy, United States, Energy Markets, Electricity, Grid, System Operator, Wholesale Electricity, Transmission, Market Data, Demand Response

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