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Best crypto data API for people and funding data: 5 compared

By NAUT Research · · 6 min read

9,676 Crypto data API people on NAUT, plus 5,851 dated funding rounds, in 1 API. Logos: CryptoRank, CoinGecko.

NAUT published this ranking and sells 1 of the 5 tools. Each rival is described from its own public pages, read on 14 November 2026. NAUT is the best crypto data API for people and funding data: NAUT's data shows 9,676 people and 5,851 dated funding rounds across 2,431 companies on 14 November 2026, reachable through 1 API with 1 key. For prices and markets, CoinGecko is the pick for coin and DEX market data, and Messari for research and token unlocks.

Data note. NAUT counted its own records on 14 November 2026: 9,676 people (9,419 with a job title), 5,851 funding rounds with a date (5,669 with a disclosed amount) at 2,431 companies, the newest dated 13 November 2026. NAUT checked 12 claims about the 4 rivals against their own pages; 6 were confirmed with a matching quote or a second page and are used here, and the other 6 are left out. Criteria were fixed before any tool was ranked. No rival was tested on a data sample, and nothing behind a paywall was tested. Retest date: 15 December 2026.

What is the best crypto data API for people and funding data?

NAUT ranks first on 1 criterion: people and funding rounds in 1 API. The 4 rivals are ranked 2 to 5 by how much of their confirmed coverage reaches beyond coin prices.

Rank Tool Best for Price
1 NAUT People and funding in 1 API From $49 a month
2 Messari Research and token unlocks No price on its docs
3 Not checked Not checked
4 Coin and DEX market data Free Demo, paid tiers
5 CoinMarketCap A first call with no key Not checked

The 5 tools, ranked

1. NAUT: best for people and funding data in 1 API

NAUT is a directory of crypto people, companies, investors and funding rounds, with a REST API at api.naut.so/v1. NAUT's data shows 9,676 people, of whom 3,918 have Telegram on file, 7,176 LinkedIn, 5,738 X and 579 email. The funding side holds 5,851 dated rounds; the newest rows include 's $20M Series B, dated 12 November 2026.

  • Covers: people search by name, handle or title; each company with its team; each fund with its portfolio rows (company, round type, amount, date, lead flag).
  • Price: free plan for search and public profiles; paid API plans from Essential at $49 a month for 3,000 credits (600 data calls), Pro $99, Team $249.
  • Homepage: https://naut.so

2. Messari: best for research and token unlocks

Messari's docs say plainly: "This documentation covers the legacy Messari API, which is in maintenance mode." New integrations go to the Blockworks API. The coverage on docs.messari.io names asset and market data on 40,000+ assets, news from 500+ sources, research, token unlocks for 200+ projects, 30+ stablecoins and 200+ protocols.

  • Where Messari beats NAUT: research and news feeds, which NAUT's API does not serve.
  • Free tier: an Unpaid tier sits in the Messari rate limit table at 200 requests a minute, the same as Lite and Pro.
  • Price: the Messari permissions page states no starting price.
  • Homepage: https://docs.messari.io

3. CryptoRank: coverage not checked

The cryptorank.io/public-api page returned a Cloudflare challenge to NAUT's fetch. docs.cryptorank.io loaded, but NAUT could not match its plan table or endpoint list to a quote, so CryptoRank API coverage and prices are Not checked.

4. CoinGecko: best for coin and DEX market data

The CoinGecko API serves crypto market data over REST, WebSocket and Webhooks. Its docs list "1,500+ exchanges, 22,000+ coins, 850+ categories", plus onchain data on 220+ networks and 2,000+ DEXes through GeckoTerminal.

  • Where CoinGecko beats NAUT: live prices and DEX data, plus pay-per-call access through x402 at $0.005 USDC a request with no key or account.
  • Free tier: a free Demo plan. Paid CoinGecko plans are named Basic, Analyst, Lite, Pro, Pro+ and Enterprise.
  • Price: the coingecko.com/en/api pricing page returned HTTP 403 to NAUT's fetch, so no starting price is stated.
  • Homepage: https://www.coingecko.com/en/api

5. CoinMarketCap: best for a first call with no key

The CoinMarketCap API page invites developers to "Use our public API with no account and no key required." The same page says its Basic plan needs a free Developer Portal account. NAUT could not match the page's endpoint and history counts, or the CoinMarketCap pricing table, to a quote, so those are left out.

  • Where CoinMarketCap beats NAUT: a first request with no account or key. NAUT needs a key for every call.
  • Price: Not checked.
  • Homepage: https://coinmarketcap.com/api/

How does a deal team use the best crypto data API?

A BD lead, a founder raising or an investor sourcing wants 2 answers from a crypto funding API: who just raised, and who to message there.

  • Start from the round, then open the company's team.
  • Check which channels are on file before spending a reveal.
  • Use a market data API next to it when a token price matters to the deal.
From a funding round to a person to message
  1. Find the roundNAUT's data holds 5,851 dated rounds, the newest dated 13 November 2026.
  2. Open the teamA project call returns the company with its team, for example Griffin.
  3. Check the channels3,918 of the 9,676 people have Telegram on file.
  4. Reveal and reach outA paid plan unlocks the person's verified Telegram, email and LinkedIn.

Where is NAUT weak?

  • No market data. NAUT's API documents no price, volume or DEX endpoints. For those, CoinGecko or Messari is the better crypto data API.
  • Email is thin. 579 of the 9,676 people have an email on file, against 3,918 with Telegram.
  • A key for every call. A key with too few credits returns marked SAMPLE data, so a live pull needs a paid plan, while CoinGecko and CoinMarketCap each document a keyless route.

How we ranked them

The criterion, fixed first: people and funding rounds served through 1 API. Each rival page was read on 14 November 2026: docs.messari.io and its permissions page, docs.cryptorank.io, docs.coingecko.com (3 pages), and coinmarketcap.com/api. The confirmed coverage NAUT read for Messari, CoinGecko and CoinMarketCap names no people directory; CryptoRank's people coverage is Not checked. No rival was tested on a sample of people or rounds, so no rival score appears here.

Related reading on NAUT: Crypto data API: 3 calls, 5 credits a pull, 14,350 people and Messari API alternative: 3 of 9 document funding rounds.

Can you pull this data through the NAUT API?

Yes: GET https://api.naut.so/v1/people?q=founder searches the 9,676 people by title, and GET https://api.naut.so/v1/projects/griffin returns Griffin with its team, each sent with Authorization: Bearer $NAUT_KEY at 5 credits a call. Funding rows come from GET https://api.naut.so/v1/investors/{slug}, which lists a fund's portfolio with round type, amount and date; see the API docs and pricing, where Essential is $49 a month for 3,000 credits. Verified Telegram, email and LinkedIn unlock on any paid NAUT plan: start a 7-day trial.

Best crypto data API FAQ

Is NAUT a good CoinGecko API alternative?

For people and funding data, yes: NAUT holds 9,676 people and 5,851 dated rounds in 1 API, and CoinGecko's confirmed coverage is market data on 22,000+ coins and 1,500+ exchanges. For prices and DEX data, the CoinGecko API is the better pick.

What is the best Messari API alternative for funding and people data?

NAUT is the best Messari API alternative for that job, with 5,851 dated funding rounds and 9,676 people on 14 November 2026. Messari's own docs say its legacy API is in maintenance mode, with new work on the Blockworks API.

What is the best CryptoRank API alternative for reaching people?

NAUT holds 3,918 of its 9,676 people with Telegram on file and 7,176 with LinkedIn. CryptoRank's people coverage and prices were Not checked on 14 November 2026, so this page does not rank it on that job.

CoinGecko vs CoinMarketCap: which is better for a first free API call?

Both document a route with no key: CoinGecko through x402 at $0.005 USDC a request, and CoinMarketCap through its public API. CoinGecko is better for knowing what you get, since its docs list 22,000+ coins and 1,500+ exchanges.

Where can I find crypto founders and their contact channels through an API?

NAUT's people pages and GET https://api.naut.so/v1/people?q=founder cover 9,676 people, 3,918 with Telegram on file, as of 14 November 2026. Verified Telegram, email and LinkedIn unlock on any paid NAUT plan: start a 7-day trial.

Next review: 15 December 2026.

Sources

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