# Kadena

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

Kadena was a layer-1 Proof-of-Work blockchain platform built around Chainweb, a braided, parallelized Nakamoto-consensus protocol that scales Bitcoin-style security across many chains for high transaction throughput, together with Pact, its human-readable, Turing-incomplete smart-contract language. Kadena exposed two primary public APIs: the Chainweb Node API (P2P and service endpoints for cuts, blocks, headers, payloads, the mempool, mining, and node info) and the Pact REST API (local, send, poll, listen, spv) for submitting and querying smart-contract transactions on mainnet and testnet. The developer surface includes the kadena.js TypeScript client libraries, the pactjs CLI for type generation, and extensive docs at docs.kadena.io. Kadena Eco supported an ecosystem of dApps, the Marmalade NFT standard, and tooling. NOTE: Kadena the company announced it would cease operations on 2025-10-21; Kadena Mainnet stopped producing blocks on 2025-11-15 and the kadena-io GitHub organization was archived on 2025-12-23. A community edition (kda-community) forked from mainnet on 2025-11-08 and continues the open-source protocol. This profile documents the public API surface as published.

## Kin Score — 26.3 / 100 (thin)

Scored 2026-08-30 under rubric 0.17.2. Trend: flat (-0.5 from 26.8).

| Facet | Score |
|---|---|
| Discoverability | 75.9 |
| Contract Quality | 46.4 |
| Governance | 4.5 |
| Contract Governance | 4.5 |
| Operational Transparency | 2.6 |
| Developer Ergonomics | 31.0 |
| Commercial Clarity | 0.0 |
| Access Clarity | 0.0 |

## Agent readiness — 22.7 (agent-aware)

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

## Access

Unknown — onboarding: unknown, pricing: unknown, trial: no (confidence: low).

## APIs (16)

- **Kadena block API** — These endpoints return whole blocks, headers and payloads, from the chain database. Generally, blocks are returned in ascending order and include orphaned blocks. For only query...
- **Kadena blockhash API** — These endpoints return block hashes from the chain database. Generally, block hashes are returned in ascending order and include hashes from orphaned blocks. For only querying b...
- **Kadena config API** — The config API from Kadena — 1 operation(s) for config.
- **Kadena cut API** — A cut represents a distributed state of a chainweb. It references one block header for each chain, such that those blocks are pairwise concurrent. Two blocks from two different ...
- **Kadena endpoint-listen API** — The endpoint-listen API from Kadena — 1 operation(s) for endpoint-listen.
- **Kadena endpoint-local API** — The endpoint-local API from Kadena — 1 operation(s) for endpoint-local.
- **Kadena endpoint-poll API** — The endpoint-poll API from Kadena — 1 operation(s) for endpoint-poll.
- **Kadena endpoint-private API** — The endpoint-private API from Kadena — 1 operation(s) for endpoint-private.
- **Kadena endpoint-send API** — The endpoint-send API from Kadena — 1 operation(s) for endpoint-send.
- **Kadena endpoint-spv API** — The endpoint-spv API from Kadena — 1 operation(s) for endpoint-spv.
- **Kadena header API** — These endpoints return block headers from the chain database. Similar to the block endpoints, block headers are generally returned in ascending order and include headers of orph...
- **Kadena mempool API** — Mempool P2P endpoints for communication between mempools. Endusers are not supposed to use these endpoints directly. Instead, the respective Pact endpoints should be used for su...
- **Kadena mining API** — The Mining API of Chainweb node is disabled by default. It can be enabled and configured in the configuration file. The mining API consists of the following endpoints that are d...
- **Kadena misc API** — The misc API from Kadena — 7 operation(s) for misc.
- **Kadena payload API** — Raw literal Block Payloads in the form in which they are stored on the chain. By default only the payload data is returned which is sufficient for validating the blockchain Merk...
- **Kadena peer API** — The P2P communication between chainweb-nodes is sharded into several independent P2P network. The `cut` network is exchanging consensus state. There is also one mempool P2P netw...

## MCP servers (1)

- **Kadena MCP Server**

## Agentic access (1)

- **Kadena Agentic Access** — 37 operations · 20 acting

## Security (1)

- **Kadena Domain Security** — TLSv1.3 · DMARC

## Tags

Company, Crypto Web3, Blockchain, Smart Contracts, Proof of Work, Layer 1, Web3, Cryptocurrency, Developer Tools, Decentralized

---

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