Nexus Mutual

name: Nexus Mutual
description: >
  Nexus Mutual is a decentralized insurance protocol built on Ethereum that
  enables members to share risk through a discretionary mutual structure.
  Since 2019 it has provided over 10,000 covers protecting more than $6 billion
  in crypto assets against smart contract hacks, custody failure, slashing
  events, depeg occurrences, and bespoke protocol risks. The public Cover Router
  REST API exposes endpoints for querying quote pricing, per-product and
  per-pool capacity, and the full product catalogue, enabling third-party
  frontends and integrators to build point-of-sale cover purchase flows on top
  of the Nexus Mutual protocol.
image: https://nexusmutual.io/favicon.ico
url: https://nexusmutual.io
baseURL: https://api.nexusmutual.io
tags:
  - Decentralized Insurance
  - DeFi
  - Ethereum
  - Smart Contract Cover
  - Crypto Insurance
  - Protocol Protection
  - Staking
  - Claims
created: "2019-01-01"
modified: "2026-06-14"
specificationVersion: "0.19"
apis:
  - name: Nexus Mutual Cover Router API
    description: >
      REST API that computes optimal capacity allocation across Nexus Mutual
      staking pools and returns premium quotes, per-product capacity, and
      per-pool capacity data for cover buyers and integrators building
      point-of-sale insurance flows on Ethereum.
    image: https://nexusmutual.io/favicon.ico
    humanURL: https://docs.nexusmutual.io/developers/
    baseURL: https://api.nexusmutual.io/v2
    tags:
      - Quote
      - Capacity
      - Cover Products
      - Staking Pools
      - Insurance
    properties:
      - type: Documentation
        url: https://docs.nexusmutual.io/developers/
      - type: OpenAPI
        url: https://api.nexusmutual.io/v2/api/docs/
      - type: GitHubRepository
        url: https://github.com/NexusMutual/cover-router
    contact:
      - FN: Nexus Mutual
        url: https://nexusmutual.io/contact
    endpoints:
      - name: Get Quote
        description: >
          Returns premium pricing and optimal staking pool allocation for a
          cover purchase request. Batches current capacities, maps them with
          price per pool, and selects the cheapest capacity combination.
        path: /v2/quote
        method: GET
        parameters:
          - name: productId
            in: query
            required: true
            description: Unique identifier of the cover product
          - name: coverAmount
            in: query
            required: true
            description: Amount of cover requested in wei
          - name: period
            in: query
            required: false
            description: Coverage period in days (28–365)
          - name: paymentAsset
            in: query
            required: false
            description: Asset ID used to pay the premium (ETH, DAI, USDC, cbBTC)
      - name: Get All Capacity
        description: >
          Returns current available capacity across all products for a default
          period of 30 days, including allocatedNxm, minAnnualPrice,
          maxAnnualPrice, and per-asset availableCapacity.
        path: /v2/capacity
        method: GET
        parameters:
          - name: period
            in: query
            required: false
            description: Coverage period in days (28–365, default 30)
          - name: withPools
            in: query
            required: false
            description: When true includes capacityPerPool breakdown per product
      - name: Get Product Capacity
        description: >
          Returns available capacity for a single cover product across all
          staking pools, with optional per-pool breakdown.
        path: /v2/capacity/{productId}
        method: GET
        parameters:
          - name: productId
            in: path
            required: true
            description: Unique identifier of the cover product
          - name: period
            in: query
            required: false
            description: Coverage period in days (28–365, default 30)
          - name: withPools
            in: query
            required: false
            description: When true includes capacityPerPool detail
      - name: Get Pool Capacity
        description: >
          Returns capacity for all products within a specific staking pool for
          the requested period.
        path: /v2/capacity/pools/{poolId}
        method: GET
        parameters:
          - name: poolId
            in: path
            required: true
            description: Unique identifier of the staking pool
          - name: period
            in: query
            required: false
            description: Coverage period in days (28–365, default 30)
      - name: Get Pool Product Capacity
        description: >
          Returns capacity and pricing for a specific product within a specific
          staking pool, including minAnnualPrice and maxAnnualPrice.
        path: /v2/capacity/pools/{poolId}/products/{productId}
        method: GET
        parameters:
          - name: poolId
            in: path
            required: true
            description: Unique identifier of the staking pool
          - name: productId
            in: path
            required: true
            description: Unique identifier of the cover product
          - name: period
            in: query
            required: false
            description: Coverage period in days (28–365, default 30)
      - name: Get Products
        description: >
          Returns the full catalogue of cover products offered by the Nexus
          Mutual protocol, including product name, category, coverAssets,
          pricing parameters, deprecation status, and allowed staking pools.
        path: /v2/products
        method: GET

common:
  - type: Plans
    url: https://nexusmutual.io/plans/
  - type: RateLimits
    url: https://nexusmutual.io/rate-limits/
  - type: FinOps
    url: https://nexusmutual.io/finops/
  - type: GitHubOrganization
    url: https://github.com/NexusMutual
  - type: PrivacyPolicy
    url: https://v2.nexusmutual.io/assets/Privacy-Policy.pdf
  - type: TermsOfService
    url: https://v2.nexusmutual.io/assets/Terms-of-Use.pdf
  - type: StatusPage
    url: https://dune.com/nexus_mutual
  - type: Documentation
    url: https://docs.nexusmutual.io/
  - type: SDK
    url: https://sdk.nexusmutual.io/
  - type: BugBounty
    url: https://immunefi.com/bounty/nexusmutual/
  - type: Security
    url: https://docs.nexusmutual.io/resources/audits-and-security/
  - type: DataAnalytics
    url: https://dune.com/nexus_mutual
  - type: Application
    url: https://app.nexusmutual.io/
maintainers:
  - FN: Collective Risk Services CIC
    url: https://nexusmutual.io
    adr: "71-75 Shelton Street, Covent Garden, London, United Kingdom, WC2H 9JQ"