Zerion

Zerion is an Ethereum and Solana wallet and developer platform focused on making onchain data easy to use. The Zerion API delivers clean, normalized wallet data, token analytics, DeFi positions, transaction history, PnL, NFTs, gas prices, swap and bridge quotes, and real-time transaction webhooks across EVM chains and Solana. The same infrastructure powers the Zerion wallet app used by millions. It is a JSON:API REST service with HTTP Basic (API key) authentication plus pay-per-request x402 (Base/Solana USDC) and MPP (Tempo USDC) options aimed at AI agents, an open-source CLI, six packaged agent skills, a hosted MCP server, and Kafka streaming for high-throughput pipelines.

Zerion publishes 9 APIs on the APIs.io network, including chains API, dapps API, fungibles API, and 6 more. Tagged areas include Company, Web3, Blockchain, Cryptocurrency, and DeFi.

The Zerion catalog on APIs.io includes 1 event-driven AsyncAPI specification.

Zerion’s developer surface includes documentation, API reference, getting-started guide, pricing, signup flow, engineering blog, authentication, and 27 more developer resources.

🌐 Visit website 📡 Source on GitHub

63.6/100 strong ▬ flat Agent 42/100 agent ready saas Full breakdown ↓
scored 2026-09-06 · rubric v0.19.0

AccessFreemiumSelf serve⚡ Free to try

1 APIs 1 MCP Servers

Company Web3 Blockchain Cryptocurrency DeFi Wallets NFT Ethereum Solana Portfolio On-Chain Data Transaction

Kin Score

Kin Score How this is scored →
scored 2026-09-06 · rubric v0.19.0

Composite quality — 63.6/100 · strong

Contract Quality 14.0 / 21

Developer Ergonomics 11.8 / 17

Access Clarity 13.0 / 17

Operational Transparency 7.6 / 11

Contract Governance 0.5 / 10

Discoverability 6.5 / 9

Regulatory Posture 5.9 / 15

Agent readiness — 42/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 6 / 6

Agent Skills 5 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Regulatory Posture applies to this provider. Its tags matched the Payments regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/zerion: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 9

Individual APIs this provider publishes, each with its own machine-readable definition.

Zerion chains API

Operations related to chains, such as list all chains.

Zerion dapps API

Operations related to decentralized applications, such as list them all, search or get by ID.

Zerion fungibles API

Operations related to fungible assets, such as list them all, search or get by ID.

Zerion gas API

Operations related to gas.

Zerion nfts API

Operations related to non fungible assets, such list them, search or get by ID.

Zerion subscriptions to transactions API

Operations related to subscriptions to transactions.

Zerion swap API

Operations related to swapping and bridging assets.

Zerion wallet sets API

Operations on a wallet set — aggregated portfolio data across at most one EVM address and one Solana address queried together.

Zerion wallets API

Operations related to wallets, such as portfolio charts, positions, and transactions.

Scroll for all 9

Postman Collections 9

Ready-to-run Postman collections for exercising this provider's APIs.

REST chains API

POSTMAN

REST chains dapps API

POSTMAN

REST chains fungibles API

POSTMAN

REST chains gas API

POSTMAN

REST chains nfts API

POSTMAN

REST chains subscriptions to transactions API

POSTMAN

REST chains swap API

POSTMAN

REST chains wallet sets API

POSTMAN

REST chains wallets API

POSTMAN

Scroll for all 9

Open Collections 10

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

Rate Limits 1

Documented rate limits and quota policies.

AGENTIC

Resources

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

SignUp

SignUp

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 5

MCP servers, agent skills, and machine-readable catalogs

MCPServer

AgentSkill

LLMsTxt

WellKnown

AgenticAccess

Design & Contract 8

Pagination, idempotency, versioning, errors, and events

Conventions

ErrorCatalog

Lifecycle

Conformance

DataModel

Webhooks

Arazzo

Arazzo

Scroll for all 8

Build 5

SDKs, sample code, and the tooling you integrate with

PostmanWorkspace

PostmanWorkspace

GitHubOrganization

Packages

SDKs

CLI

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 3

Status, limits, changes, and where to get help

ChangeLog

ChangeLog

Deprecation

Deprecation

RateLimits

RateLimits

Commercial 4

Pricing, plans, and the legal terms of use

Pricing

TermsOfService

PrivacyPolicy

Plans

Company 1

The organization behind the API

Blog

Blog

Other 1

Properties that don't map to a standard resource type

Overlay

Overlay

Source (apis.yml)

aid: zerion
name: Zerion
description: Zerion is an Ethereum and Solana wallet and developer platform focused on making onchain data easy to use. The
  Zerion API delivers clean, normalized wallet data, token analytics, DeFi positions, transaction history, PnL, NFTs, gas
  prices, swap and bridge quotes, and real-time transaction webhooks across EVM chains and Solana. The same infrastructure
  powers the Zerion wallet app used by millions. It is a JSON:API REST service with HTTP Basic (API key) authentication plus
  pay-per-request x402 (Base/Solana USDC) and MPP (Tempo USDC) options aimed at AI agents, an open-source CLI, six packaged
  agent skills, a hosted MCP server, and Kafka streaming for high-throughput pipelines.
url: https://raw.githubusercontent.com/api-evangelist/zerion/refs/heads/main/apis.yml
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  - rate-limits
  - security
  generated: '2026-09-03'
  method: derived
image: https://developers.zerion.io/logo/dark.svg
x-type: company
x-source: vc-portfolio
x-backed-by:
- lightspeed-venture-partners
x-tier: profiled
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-21'
tags:
- Company
- Web3
- Blockchain
- Cryptocurrency
- DeFi
- Wallets
- NFT
- Ethereum
- Solana
- Portfolio
- On-Chain Data
- Transaction
tags_raw:
- Company
- Web3
- Blockchain
- Cryptocurrency
- DeFi
- Wallet
- NFT
- Ethereum
- Solana
- Portfolio
- Onchain Data
- Transactions
apis:
- aid: zerion:zerion-chains-api
  name: Zerion chains API
  description: Operations related to chains, such as list all chains.
  humanURL: https://developers.zerion.io/
  baseURL: https://api.zerion.io
  tags:
  - Chains
  tags_raw:
  - chains
  properties:
  - type: OpenAPI
    url: openapi/zerion-chains-api-openapi.yml
  - type: APIReference
    url: https://developers.zerion.io/api-reference/wallets/get-wallet-portfolio
  - type: Documentation
    url: https://developers.zerion.io/
- aid: zerion:zerion-dapps-api
  name: Zerion dapps API
  description: Operations related to decentralized applications, such as list them all, search or get by ID.
  humanURL: https://developers.zerion.io/
  baseURL: https://api.zerion.io
  tags:
  - DApps
  tags_raw:
  - dapps
  properties:
  - type: OpenAPI
    url: openapi/zerion-dapps-api-openapi.yml
  - type: APIReference
    url: https://developers.zerion.io/api-reference/wallets/get-wallet-portfolio
  - type: Documentation
    url: https://developers.zerion.io/
- aid: zerion:zerion-fungibles-api
  name: Zerion fungibles API
  description: Operations related to fungible assets, such as list them all, search or get by ID.
  humanURL: https://developers.zerion.io/
  baseURL: https://api.zerion.io
  tags:
  - fungibles
  properties:
  - type: OpenAPI
    url: openapi/zerion-fungibles-api-openapi.yml
  - type: APIReference
    url: https://developers.zerion.io/api-reference/wallets/get-wallet-portfolio
  - type: Documentation
    url: https://developers.zerion.io/
- aid: zerion:zerion-gas-api
  name: Zerion gas API
  description: Operations related to gas.
  humanURL: https://developers.zerion.io/
  baseURL: https://api.zerion.io
  tags:
  - Gas
  tags_raw:
  - gas
  properties:
  - type: OpenAPI
    url: openapi/zerion-gas-api-openapi.yml
  - type: APIReference
    url: https://developers.zerion.io/api-reference/wallets/get-wallet-portfolio
  - type: Documentation
    url: https://developers.zerion.io/
- aid: zerion:zerion-nfts-api
  name: Zerion nfts API
  description: Operations related to non fungible assets, such list them, search or get by ID.
  humanURL: https://developers.zerion.io/
  baseURL: https://api.zerion.io
  tags:
  - NFT
  tags_raw:
  - nfts
  properties:
  - type: OpenAPI
    url: openapi/zerion-nfts-api-openapi.yml
  - type: APIReference
    url: https://developers.zerion.io/api-reference/wallets/get-wallet-portfolio
  - type: Documentation
    url: https://developers.zerion.io/
- aid: zerion:zerion-subscriptions-to-transactions-api
  name: Zerion subscriptions to transactions API
  description: Operations related to subscriptions to transactions.
  humanURL: https://developers.zerion.io/
  baseURL: https://api.zerion.io
  tags:
  - subscriptions to transactions
  properties:
  - type: OpenAPI
    url: openapi/zerion-subscriptions-to-transactions-api-openapi.yml
  - type: APIReference
    url: https://developers.zerion.io/api-reference/wallets/get-wallet-portfolio
  - type: Documentation
    url: https://developers.zerion.io/
- aid: zerion:zerion-swap-api
  name: Zerion swap API
  description: Operations related to swapping and bridging assets.
  humanURL: https://developers.zerion.io/
  baseURL: https://api.zerion.io
  tags:
  - Swap
  tags_raw:
  - swap
  properties:
  - type: OpenAPI
    url: openapi/zerion-swap-api-openapi.yml
  - type: APIReference
    url: https://developers.zerion.io/api-reference/wallets/get-wallet-portfolio
  - type: Documentation
    url: https://developers.zerion.io/
- aid: zerion:zerion-wallet-sets-api
  name: Zerion wallet sets API
  description: Operations on a wallet set — aggregated portfolio data across at most one EVM address and one Solana address
    queried together.
  humanURL: https://developers.zerion.io/
  baseURL: https://api.zerion.io
  tags:
  - Wallet Sets
  tags_raw:
  - wallet sets
  properties:
  - type: OpenAPI
    url: openapi/zerion-wallet-sets-api-openapi.yml
  - type: APIReference
    url: https://developers.zerion.io/api-reference/wallets/get-wallet-portfolio
  - type: Documentation
    url: https://developers.zerion.io/
- aid: zerion:zerion-wallets-api
  name: Zerion wallets API
  description: Operations related to wallets, such as portfolio charts, positions, and transactions.
  humanURL: https://developers.zerion.io/
  baseURL: https://api.zerion.io
  tags:
  - Wallets
  tags_raw:
  - wallets
  properties:
  - type: OpenAPI
    url: openapi/zerion-wallets-api-openapi.yml
  - type: APIReference
    url: https://developers.zerion.io/api-reference/wallets/get-wallet-portfolio
  - type: Documentation
    url: https://developers.zerion.io/
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: PostmanWorkspace
  url: https://www.postman.com/kinlaneapi/zerion/overview
- url: https://developers.zerion.io/
  type: DeveloperPortal
- url: https://developers.zerion.io/
  type: Documentation
- url: https://developers.zerion.io/api-reference/wallets/get-wallet-portfolio
  type: APIReference
- url: https://developers.zerion.io/quickstart
  type: GettingStarted
- url: https://developers.zerion.io/pricing
  type: Pricing
- url: https://dashboard.zerion.io
  type: SignUp
- url: https://zerion.io/blog/tag/zerion-api/
  type: Blog
- url: https://github.com/zeriontech
  type: GitHubOrganization
- url: https://zerion.io/terms
  type: TermsOfService
- url: https://zerion.io/privacy
  type: PrivacyPolicy
- url: authentication/zerion-authentication.yml
  type: Authentication
- url: packages/zerion-packages.yml
  type: Packages
- url: packages/zerion-packages.yml
  type: SDKs
- url: cli/zerion-cli.yml
  type: CLI
- url: mcp/zerion-mcp.yml
  type: MCPServer
- url: skills/_index.yml
  type: AgentSkill
- url: llms/zerion-llms.txt
  type: LLMsTxt
- url: well-known/zerion-well-known.yml
  type: WellKnown
- url: conventions/zerion-conventions.yml
  type: Conventions
- url: errors/zerion-problem-types.yml
  type: ErrorCatalog
- url: lifecycle/zerion-lifecycle.yml
  type: Lifecycle
- url: changelog/zerion-changelog.yml
  type: ChangeLog
- url: https://developers.zerion.io/changelog
  type: Deprecation
- url: conformance/zerion-conformance.yml
  type: Conformance
- url: data-model/zerion-data-model.yml
  type: DataModel
- url: security/zerion-domain-security.yml
  type: DomainSecurity
- url: asyncapi/zerion-transactions-webhooks.yml
  type: Webhooks
- url: agentic-access/zerion-agentic-access.yml
  type: AgenticAccess
- url: overlays/zerion-api-overlay.yaml
  type: Overlay
- url: rate-limits/zerion-rate-limits.yml
  type: RateLimits
- url: plans/zerion-plans.yml
  type: Plans
- url: arazzo/zerion-wallet-overview.arazzo.yml
  type: Arazzo
  name: Zerion wallet overview
- url: arazzo/zerion-wallet-activity-subscription.arazzo.yml
  type: Arazzo
  name: Zerion wallet activity subscription
x-enrichment:
  date: 2026-07-21
  status: enriched
  artifacts_added: 28
  pass: local-v1

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Zerion

APIs 9

Postman Collections 9

Open Collections 10

Arazzo Workflows 2

MCP Servers 1

Pricing Plans 1

Rate Limits 1

Event Specifications 1

Security Posture 2

Agentic Access 1

Get Started 3

Documentation 2

Agent Surfaces 5

Design & Contract 8

Build 5

Access & Security 2

Operate 3

Commercial 4

Company 1

Other 1

Source (apis.yml)

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