Surf

Surf (asksurf.ai) is a crypto-focused AI research and execution platform that exposes its intelligence as a developer API. The Surf Data API ("Hermod" gateway) provides 119 typed REST endpoints across 14 domains — exchange and market data, tokens, DeFi projects, wallets, on-chain SQL, social signals, news, funds, prediction markets (Polymarket/Kalshi), Hyperliquid perps, search, and web fetch — covering 40+ blockchains and 200+ data sources. A separate OpenAI-style Chat API (surf-2.0 / surf-2.0-instant models) answers natural-language crypto research questions with citations. Access is via a single Bearer API key with credit-based billing (30 free credits/day, no signup), and the platform ships a Go CLI, an MCP server, an Agent Skill, and a TypeScript SDK. Surf is backed by Pantera Capital.

Surf publishes 15 APIs on the APIs.io network, including DEX API, Exchange API, Fund API, and 12 more. Tagged areas include Company, Crypto, Blockchain, Market Data, and On-Chain Analytics.

Surf’s developer surface includes documentation, API reference, getting-started guide, pricing, signup flow, authentication, CLI, and 15 more developer resources.

🌐 Visit website 📡 Source on GitHub

39.7/100 developing ▬ flat Agent 25/100 agent aware saas Full breakdown ↓
scored 2026-08-30 · rubric v0.17.2

AccessOpen

1 APIs 1 MCP Servers

Company Crypto Blockchain Market Data On-Chain AnalyticsWallet IntelligenceArtificial Intelligence DeFi Prediction Markets Developer API

Kin Score

Kin Score How this is scored →
scored 2026-08-30 · rubric v0.17.2

Composite quality — 39.7/100 · developing

Contract Quality 11.3 / 21

Developer Ergonomics 12.1 / 17

Access Clarity 4.0 / 17

Operational Transparency 0.3 / 11

Contract Governance 0.5 / 10

Discoverability 6.5 / 9

Regulatory Posture 4.2 / 15

Agent readiness — 25/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 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 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 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 Surface 0 / 5

Regulatory Posture applies to this provider. Its tags matched the Securities & Market Data 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/. This rating is computed from github.com/api-evangelist/surf: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 16

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

Open Collections 16

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

MCP Servers 1

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

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 3

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

MCPServer

MCPServer

AgentSkill

AgentSkill

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Conventions

ErrorCatalog

DataModel

Conformance

Lifecycle

Build 4

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

CLI

Packages

SDKs

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Commercial 1

Pricing, plans, and the legal terms of use

Pricing

Pricing

Company 1

The organization behind the API

Website

Website

Other 1

Properties that don't map to a standard resource type

Overlay

Overlay

Source (apis.yml)

x-enrichment:
  date: '2026-07-21'
  status: enriched
  artifacts_added: 19
  pass: local-v1
aid: surf
name: Surf
description: Surf (asksurf.ai) is a crypto-focused AI research and execution platform that exposes its intelligence as a developer
  API. The Surf Data API ("Hermod" gateway) provides 119 typed REST endpoints across 14 domains — exchange and market data,
  tokens, DeFi projects, wallets, on-chain SQL, social signals, news, funds, prediction markets (Polymarket/Kalshi), Hyperliquid
  perps, search, and web fetch — covering 40+ blockchains and 200+ data sources. A separate OpenAI-style Chat API (surf-2.0
  / surf-2.0-instant models) answers natural-language crypto research questions with citations. Access is via a single Bearer
  API key with credit-based billing (30 free credits/day, no signup), and the platform ships a Go CLI, an MCP server, an Agent
  Skill, and a TypeScript SDK. Surf is backed by Pantera Capital.
url: https://raw.githubusercontent.com/api-evangelist/surf/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- pantera-capital
x-tier: stub
x-tier-reason: portfolio-lead
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: open
  trial: false
  try_now: false
  public: true
  label: Open access
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-21'
tags:
- Company
- Crypto
- Blockchain
- Market Data
- On-Chain Analytics
- Wallet Intelligence
- Artificial Intelligence
- DeFi
- Prediction Markets
- Developer API
tags_raw:
- Company
- Crypto
- Blockchain
- Market Data
- On-Chain Analytics
- Wallet Intelligence
- AI
- DeFi
- Prediction Markets
- Developer API
image: https://asksurf.ai/favicon.ico
apis:
- name: Surf Chat API
  description: OpenAI-style Chat/Research API. POST /responses with a surf-2.0 or surf-2.0-instant model and a natural-language
    crypto question; returns synthesized answers with inline citations drawn from live market, on-chain, and social data.
    Streaming supported.
  humanURL: https://agents.asksurf.ai/docs/chat/overview
  baseURL: https://api.asksurf.ai/gateway/v1
  tags:
  - Crypto
  - Artificial Intelligence
  - LLM
  tags_raw:
  - Crypto
  - AI
  - LLM
- aid: surf:surf-dex-api
  name: Surf DEX API
  description: The DEX API from Surf — 1 operation(s) for dex.
  humanURL: https://agents.asksurf.ai/docs/data-api/overview
  baseURL: https://api.asksurf.ai/gateway/v1
  tags:
  - DEX
  properties:
  - type: OpenAPI
    url: openapi/surf-dex-api-openapi.yml
  - type: Documentation
    url: https://agents.asksurf.ai/docs/data-api/overview
- aid: surf:surf-exchange-api
  name: Surf Exchange API
  description: Access real-time trading data from major exchanges including Binance, OKX, Bybit, and more. Query live ticker
    prices, order book depth, OHLCV candlestick charts, and perpetual contract data such as funding rates, open interest,
    and long/short ratios.
  humanURL: https://agents.asksurf.ai/docs/data-api/overview
  baseURL: https://api.asksurf.ai/gateway/v1
  tags:
  - Exchange
  properties:
  - type: OpenAPI
    url: openapi/surf-exchange-api-openapi.yml
  - type: Documentation
    url: https://agents.asksurf.ai/docs/data-api/overview
- aid: surf:surf-fund-api
  name: Surf Fund API
  description: Explore crypto venture capital. Look up fund profiles with team info and social links, browse their full investment
    portfolio with round details, and rank funds by tier or portfolio size.
  humanURL: https://agents.asksurf.ai/docs/data-api/overview
  baseURL: https://api.asksurf.ai/gateway/v1
  tags:
  - Fund
  properties:
  - type: OpenAPI
    url: openapi/surf-fund-api-openapi.yml
  - type: Documentation
    url: https://agents.asksurf.ai/docs/data-api/overview
- aid: surf:surf-hyperliquid-api
  name: Surf Hyperliquid API
  description: The Hyperliquid API from Surf — 9 operation(s) for hyperliquid.
  humanURL: https://agents.asksurf.ai/docs/data-api/overview
  baseURL: https://api.asksurf.ai/gateway/v1
  tags:
  - Hyperliquid
  properties:
  - type: OpenAPI
    url: openapi/surf-hyperliquid-api-openapi.yml
  - type: Documentation
    url: https://agents.asksurf.ai/docs/data-api/overview
- aid: surf:surf-market-api
  name: Surf Market API
  description: Get a high-level view of the crypto market. Browse token rankings by market cap or volume, track derivatives
    across all exchanges, monitor spot ETF fund flows, view liquidation events, compute technical indicators (RSI, MACD, Bollinger
    Bands, and more), explore on-chain valuation metrics (NUPL, MVRV, SOPR), and check the Fear & Greed Index.
  humanURL: https://agents.asksurf.ai/docs/data-api/overview
  baseURL: https://api.asksurf.ai/gateway/v1
  tags:
  - Market
  properties:
  - type: OpenAPI
    url: openapi/surf-market-api-openapi.yml
  - type: Documentation
    url: https://agents.asksurf.ai/docs/data-api/overview
- aid: surf:surf-news-api
  name: Surf News API
  description: Stay up to date with crypto news. Browse the latest articles from major crypto media outlets, read full article
    content, and search across all sources by keyword.
  humanURL: https://agents.asksurf.ai/docs/data-api/overview
  baseURL: https://api.asksurf.ai/gateway/v1
  tags:
  - News
  properties:
  - type: OpenAPI
    url: openapi/surf-news-api-openapi.yml
  - type: Documentation
    url: https://agents.asksurf.ai/docs/data-api/overview
- aid: surf:surf-onchain-api
  name: Surf Onchain API
  description: Query blockchain data directly. Look up transaction details by hash, check gas prices, and run structured or
    raw SQL queries against indexed blockchain datasets spanning Ethereum, Base, Solana, and more.
  humanURL: https://agents.asksurf.ai/docs/data-api/overview
  baseURL: https://api.asksurf.ai/gateway/v1
  tags:
  - Onchain
  properties:
  - type: OpenAPI
    url: openapi/surf-onchain-api-openapi.yml
  - type: Documentation
    url: https://agents.asksurf.ai/docs/data-api/overview
- aid: surf:surf-prediction-market-api
  name: Surf Prediction Market API
  description: Track prediction markets on Polymarket and Kalshi. Browse events and markets, view live prices and odds, analyze
    trading volume and open interest history, inspect individual trades, and discover top-ranked markets by activity.
  humanURL: https://agents.asksurf.ai/docs/data-api/overview
  baseURL: https://api.asksurf.ai/gateway/v1
  tags:
  - Prediction Market
  properties:
  - type: OpenAPI
    url: openapi/surf-prediction-market-api-openapi.yml
  - type: Documentation
    url: https://agents.asksurf.ai/docs/data-api/overview
- aid: surf:surf-project-api
  name: Surf Project API
  description: Research crypto projects in depth. Retrieve aggregated project profiles covering overview, team, funding rounds,
    tokenomics, social links, and TGE status. Track DeFi protocol metrics like TVL, fees, revenue, trading volume, and active
    users over time.
  humanURL: https://agents.asksurf.ai/docs/data-api/overview
  baseURL: https://api.asksurf.ai/gateway/v1
  tags:
  - Project
  properties:
  - type: OpenAPI
    url: openapi/surf-project-api-openapi.yml
  - type: Documentation
    url: https://agents.asksurf.ai/docs/data-api/overview
- aid: surf:surf-search-api
  name: Surf Search API
  description: Find anything across Surf's data universe. Search for crypto projects, X (Twitter) accounts and posts, news
    articles, wallet addresses, web pages, investment funds, airdrop opportunities, and prediction market events — all from
    a single unified search interface.
  humanURL: https://agents.asksurf.ai/docs/data-api/overview
  baseURL: https://api.asksurf.ai/gateway/v1
  tags:
  - Search
  properties:
  - type: OpenAPI
    url: openapi/surf-search-api-openapi.yml
  - type: Documentation
    url: https://agents.asksurf.ai/docs/data-api/overview
- aid: surf:surf-signal-api
  name: Surf Signal API
  description: Explore ranked project signal score snapshots, token-of-day/week highlights, and project-level signal cards
    with latest price, price-change, dimension scores, compact signals, and AI summaries.
  humanURL: https://agents.asksurf.ai/docs/data-api/overview
  baseURL: https://api.asksurf.ai/gateway/v1
  tags:
  - Signal
  properties:
  - type: OpenAPI
    url: openapi/surf-signal-api-openapi.yml
  - type: Documentation
    url: https://agents.asksurf.ai/docs/data-api/overview
- aid: surf:surf-social-api
  name: Surf Social API
  description: Monitor crypto social activity on X (Twitter). Look up user profiles and their posts, track project sentiment
    scores and follower geography, discover smart followers, and analyze mindshare trends over time to gauge social momentum.
  humanURL: https://agents.asksurf.ai/docs/data-api/overview
  baseURL: https://api.asksurf.ai/gateway/v1
  tags:
  - Social
  properties:
  - type: OpenAPI
    url: openapi/surf-social-api-openapi.yml
  - type: Documentation
    url: https://agents.asksurf.ai/docs/data-api/overview
- aid: surf:surf-token-api
  name: Surf Token API
  description: Analyze individual tokens on-chain. Look up top holders and their share of supply, track ERC-20/SPL token transfers,
    browse DEX swap history, and view upcoming token unlock schedules with allocation breakdowns.
  humanURL: https://agents.asksurf.ai/docs/data-api/overview
  baseURL: https://api.asksurf.ai/gateway/v1
  tags:
  - Token
  properties:
  - type: OpenAPI
    url: openapi/surf-token-api-openapi.yml
  - type: Documentation
    url: https://agents.asksurf.ai/docs/data-api/overview
- aid: surf:surf-wallet-api
  name: Surf Wallet API
  description: Inspect any wallet on Ethereum, Base, Solana, and other chains. View token balances, NFT holdings, entity labels,
    transfer history, full transaction logs, DeFi protocol positions (lending, staking, LP), and net worth trends over time.
  humanURL: https://agents.asksurf.ai/docs/data-api/overview
  baseURL: https://api.asksurf.ai/gateway/v1
  tags:
  - Wallets
  tags_raw:
  - Wallet
  properties:
  - type: OpenAPI
    url: openapi/surf-wallet-api-openapi.yml
  - type: Documentation
    url: https://agents.asksurf.ai/docs/data-api/overview
- aid: surf:surf-web-api
  name: Surf Web API
  description: Fetch and search web content. Retrieve any URL and convert it to clean, LLM-friendly markdown, or search the
    internet for crypto-related articles, reports, and resources.
  humanURL: https://agents.asksurf.ai/docs/data-api/overview
  baseURL: https://api.asksurf.ai/gateway/v1
  tags:
  - Web
  properties:
  - type: OpenAPI
    url: openapi/surf-web-api-openapi.yml
  - type: Documentation
    url: https://agents.asksurf.ai/docs/data-api/overview
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Overlay
  url: overlays/surf-data-api-overlay.yaml
- type: Website
  url: https://asksurf.ai/
- type: DeveloperPortal
  url: https://agents.asksurf.ai/
- type: Documentation
  url: https://agents.asksurf.ai/docs
- type: APIReference
  url: https://agents.asksurf.ai/docs/data-api/overview
- type: GettingStarted
  url: https://agents.asksurf.ai/docs/overview
- type: Pricing
  url: https://agents.asksurf.ai/docs/pricing
- type: SignUp
  url: https://agents.asksurf.ai/
- type: GitHubOrganization
  url: https://github.com/asksurf-ai
- type: LLMsTxt
  url: llms/surf-llms.txt
- type: Authentication
  url: authentication/surf-authentication.yml
- type: Conventions
  url: conventions/surf-conventions.yml
- type: ErrorCatalog
  url: errors/surf-error-codes.yml
- type: DataModel
  url: data-model/surf-data-model.yml
- type: Conformance
  url: conformance/surf-conformance.yml
- type: Lifecycle
  url: lifecycle/surf-lifecycle.yml
- type: MCPServer
  url: mcp/surf-mcp.yml
- type: AgentSkill
  url: skills/_index.yml
- type: CLI
  url: cli/surf-cli.yml
- type: Packages
  url: packages/surf-packages.yml
- type: SDKs
  url: packages/surf-packages.yml
- type: DomainSecurity
  url: security/surf-domain-security.yml

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for providers

9 MCP tools reach this

find_providersBrowse and filter every provider in the catalog.
get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools →

Call it yourself

curl for this page

This provider

curl "https://apis.io/api/v1/providers/surf"

All providers

curl "https://apis.io/api/v1/providers?limit=25"

Every operation they expose

curl "https://apis.io/api/v1/providers/surf/operations?limit=25"

How their score was established

curl "https://apis.io/api/v1/providers/surf/evidence"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no email required.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.