# Kusama

**Canonical:** https://apis.io/providers/kusama/  
**Website:** https://kusama.network/  
**APIs profiled:** 21

Kusama is the permissionless, unaudited canary network of the Polkadot ecosystem, running the same Polkadot SDK (Substrate/FRAME) runtime as Polkadot but with faster governance, lower barriers to entry, and real economic conditions — it is where runtime upgrades, parachain/coretime mechanics, and governance changes ship first before reaching Polkadot. Its developer surface is a chain interface rather than a hosted SaaS API: a public Substrate JSON-RPC 2.0 endpoint at kusama-rpc.polkadot.io exposing 130 live methods (chain, state, author, system, payment, plus the newer chainHead/archive/transaction v1 families) over HTTP and WebSocket, and a REST projection of the same chain state via Substrate API Sidecar at kusama-public-sidecar.parity-chains.parity.io, documented by a 119-operation OpenAPI 3.0 specification. Access is unauthenticated and public-read; write access happens by submitting SCALE-encoded, key-signed extrinsics. The native token is KSM (12 decimals, SS58 prefix 2).

## Kin Score — 50.0 / 100 (developing)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 50.0).

| Facet | Score |
|---|---|
| Discoverability | 81.5 |
| Contract Quality | 56.8 |
| Governance | 16.7 |
| Contract Governance | 16.7 |
| Operational Transparency | 44.7 |
| Developer Ergonomics | 78.0 |
| Commercial Clarity | 21.1 |
| Access Clarity | 21.1 |

## Agent readiness — 40.0 (agent-ready)

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

## Access

Open access — onboarding: open, pricing: unknown, trial: no (confidence: medium).

## APIs (21)

- **Kusama JSON-RPC API** — The public Substrate JSON-RPC 2.0 interface to the Kusama relay chain. Probed live on 2026-07-19: 130 methods are advertised by rpc_methods, spanning chain (blocks/headers), sta...
- **Kusama accounts API** — The accounts API from Kusama — 11 operation(s) for accounts.
- **Kusama ahm API** — Asset Hub Migration information
- **Kusama blocks API** — The blocks API from Kusama — 8 operation(s) for blocks.
- **Kusama contracts API** — The contracts API from Kusama — 1 operation(s) for contracts.
- **Kusama coretime API** — The coretime API from Kusama — 6 operation(s) for coretime.
- **Kusama node API** — node connected to sidecar
- **Kusama pallets API** — pallets employed in the runtime
- **Kusama paras API** — The paras API from Kusama — 9 operation(s) for paras.
- **Kusama rc accounts API** — The rc accounts API from Kusama — 5 operation(s) for rc accounts.
- **Kusama rc API** — relay chain specific endpoints for asset hub
- **Kusama rc blocks API** — The rc blocks API from Kusama — 8 operation(s) for rc blocks.
- **Kusama rc node API** — The rc node API from Kusama — 3 operation(s) for rc node.
- **Kusama rc pallets API** — The rc pallets API from Kusama — 13 operation(s) for rc pallets.
- **Kusama rc runtime API** — The rc runtime API from Kusama — 5 operation(s) for rc runtime.
- **Kusama rc staking API** — The rc staking API from Kusama — 4 operation(s) for rc staking.
- **Kusama rc transaction API** — The rc transaction API from Kusama — 5 operation(s) for rc transaction.
- **Kusama runtime API** — The runtime API from Kusama — 5 operation(s) for runtime.
- **Kusama staking API** — The staking API from Kusama — 4 operation(s) for staking.
- **Kusama trace API** — The trace API from Kusama — 4 operation(s) for trace.
- **Kusama transaction API** — The transaction API from Kusama — 6 operation(s) for transaction.

## MCP servers (1)

- **Kusama MCP Server**

## Security (3)

- **Kusama Authentication** — 0 schemes
- **Kusama Domain Security** — TLSv1.3 · HSTS · DNSSEC · DMARC
- **Kusama Vulnerability Disclosure** — disclosure policy published

## Tags

Company, Crypto, Blockchain, Web3, Polkadot, Substrate, JSON-RPC, Blockchain Data, Staking, Governance

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