Agent-native, real-time data across 12 live categories: fully sourced

Data sources you can rely on.

Real-time market data across crypto (spot, options, futures, ETF flows), FX, sports, weather, stocks, commodities, macro, medical, and our source-abstracted cosmos/civic/economy/earth feeds. Every number carries the exact source and timestamp behind it — data sources you can rely on, no black boxes.

Browse the catalog Read the docs →

Browse the full catalog with no key. A free API key unlocks the live data.

GET/v1/data/crypto/options/chain?entity=BTCexample

{
  "data": {
    "underlying": "BTC",
    "underlying_px": 61452.3,
    "options": [
      {
        "instrument": "BTC-31JUL26-60000-C",
        "expiry": "2026-07-31T08:00:00.000Z",
        "strike": 60000,
        "option_type": "call",
        "mark_price_usd": 2120.8,
        "mark_iv": 0.44,
        "delta": 0.52,
        "gamma": 0.000047,
        "vega": 63.5,
        "theta": -35.8,
        "open_interest": 891.2
      },
      {
        "instrument": "BTC-31JUL26-60000-P",
        "expiry": "2026-07-31T08:00:00.000Z",
        "strike": 60000,
        "option_type": "put",
        "mark_price_usd": 1979.9,
        "mark_iv": 0.44,
        "delta": -0.48,
        "gamma": 0.000047,
        "vega": 63.5,
        "theta": -33.9,
        "open_interest": 764.4
      }
    ]
  },
  "meta": {
    "as_of": "2026-07-09T12:00:00.600Z",
    "venues": [
      "exchange"
    ],
    "staleness_ms": 800,
    "confidence": 0.95
  },
  "provenance": {
    "sources": [
      {
        "venue": "exchange",
        "symbol": "BTC",
        "ts": "2026-07-09T12:00:00.100Z"
      }
    ],
    "method": "options mark price snapshot from the derivatives exchange"
  }
}

Illustrative example: real, live numbers are in the demo below.

Community dashboards

Built by people using the data.

Saved visualizations, ranked by what people are looking at right now. Every chart draws from the same sourced, live API. Build your own →

See the full feed

Live demo, fully sourced

See it work, right now.

Real BTC options pricing from a derivatives exchange, alongside live sports scores, refreshed every minute, sources included. Get a free key to pull it live →

Showing a sample snapshot. Get a free API key to pull this live.

Options BTC chain

underlying BTC, $63,000.00

Strike	Type	Mark $	IV %	Delta
60,000	Call	$4,210.60	51.8%	0.79
60,000	Put	$1,180.30	51.2%	-0.21
63,000	Call	$2,340.90	49.5%	0.54
63,000	Put	$2,295.40	49.7%	-0.46
66,000	Call	$1,145.20	50.6%	0.29
66,000	Put	$4,080.70	51.0%	-0.71

Sports live & recent, sports provider

basketball, NBA Live

BOS 98-101 LAL
basketball, NBA Final

GSW 107-112 MIA
football, EPL Live

ARS 1-1 MCI
football, EPL Scheduled

LIV 0-0 CHE
tennis, ATP Live

Sinner 0-1 Alcaraz
tennis, WTA Final

Gauff 1-2 Swiatek

Auto-refreshes every 30s, 1-min cached upstream

Full response, GET https://api.seekingdata.dev/v1/demo

{
  "data": {
    "options": {
      "underlying": "BTC",
      "underlying_px": 63000,
      "contracts": [
        {
          "instrument": "BTC-25JUL26-60000-C",
          "strike": 60000,
          "option_type": "C",
          "mark_price_usd": 4210.6,
          "mark_iv": 51.8,
          "delta": 0.79
        },
        {
          "instrument": "BTC-25JUL26-60000-P",
          "strike": 60000,
          "option_type": "P",
          "mark_price_usd": 1180.3,
          "mark_iv": 51.2,
          "delta": -0.21
        },
        {
          "instrument": "BTC-25JUL26-63000-C",
          "strike": 63000,
          "option_type": "C",
          "mark_price_usd": 2340.9,
          "mark_iv": 49.5,
          "delta": 0.54
        },
        {
          "instrument": "BTC-25JUL26-63000-P",
          "strike": 63000,
          "option_type": "P",
          "mark_price_usd": 2295.4,
          "mark_iv": 49.7,
          "delta": -0.46
        },
        {
          "instrument": "BTC-25JUL26-66000-C",
          "strike": 66000,
          "option_type": "C",
          "mark_price_usd": 1145.2,
          "mark_iv": 50.6,
          "delta": 0.29
        },
        {
          "instrument": "BTC-25JUL26-66000-P",
          "strike": 66000,
          "option_type": "P",
          "mark_price_usd": 4080.7,
          "mark_iv": 51,
          "delta": -0.71
        }
      ]
    },
    "sports": {
      "events": [
        {
          "sport": "basketball",
          "league": "nba",
          "home": "LAL",
          "away": "BOS",
          "home_score": 101,
          "away_score": 98,
          "status": "in_progress",
          "start_time": "2026-07-09T23:00:00Z"
        },
        {
          "sport": "basketball",
          "league": "nba",
          "home": "MIA",
          "away": "GSW",
          "home_score": 112,
          "away_score": 107,
          "status": "final",
          "start_time": "2026-07-09T20:30:00Z"
        },
        {
          "sport": "football",
          "league": "epl",
          "home": "MCI",
          "away": "ARS",
          "home_score": 1,
          "away_score": 1,
          "status": "in_progress",
          "start_time": "2026-07-09T22:15:00Z"
        },
        {
          "sport": "football",
          "league": "epl",
          "home": "CHE",
          "away": "LIV",
          "home_score": 0,
          "away_score": 0,
          "status": "scheduled",
          "start_time": "2026-07-10T18:00:00Z"
        },
        {
          "sport": "tennis",
          "league": "atp",
          "home": "Alcaraz",
          "away": "Sinner",
          "home_score": 1,
          "away_score": 0,
          "status": "in_progress",
          "start_time": "2026-07-09T21:00:00Z"
        },
        {
          "sport": "tennis",
          "league": "wta",
          "home": "Swiatek",
          "away": "Gauff",
          "home_score": 2,
          "away_score": 1,
          "status": "final",
          "start_time": "2026-07-09T18:45:00Z"
        }
      ]
    }
  },
  "meta": {
    "as_of": "2026-07-09T23:04:12.000Z",
    "cache_ttl_s": 60,
    "venues": [
      "exchange",
      "provider"
    ],
    "staleness_ms": 1200
  },
  "provenance": {
    "sources": [
      {
        "venue": "exchange",
        "ts": "2026-07-09T23:04:11.400Z"
      },
      {
        "venue": "provider",
        "ts": "2026-07-09T23:03:58.900Z"
      }
    ],
    "method": "1-minute cached demo snapshot"
  }
}

Pay-per-call · x402

Your AI agent pays per call — no account, no API key.

Every priced endpoint speaks x402, the open HTTP-402 payment standard. An agent hits the data, gets a price, pays in USDC, and gets the answer — no signup, no card, no human in the loop. We hold no key; settlement is on-chain.

01
request
Ask, with no key
Your agent GETs any priced data endpoint directly — no account, no signup, no API key on the request.
02
402
Get a price, not a wall
The API answers 402 Payment Required with a PAYMENT-REQUIRED header carrying the exact amount, asset, and network.
03
sign
Sign USDC on Solana
The agent signs a USDC payment for that amount and retries with a PAYMENT-SIGNATURE header. An x402 facilitator settles it on-chain.
04
data
Get the data
200 OK with the full seekingdata envelope — value, confidence, provenance — plus a PAYMENT-RESPONSE receipt header.

$0.01per latest read

$0.02per time-series read ?series=true

Priced in USDC on Solana mainnet. Settled by an x402 facilitator — the seller never holds a key or your funds.

agent ↔ api.seekingdata.dev, x402 handshake

1 · request

$ curl -i "https://api.seekingdata.dev/v1/data/crypto/spot/reference_price?entity=BTC-USD"

2 · 402 payment required

HTTP/1.1 402 Payment Required
PAYMENT-REQUIRED: eyJ4NDAyVmVyc2lvbiI6MSwiYWNjZXB0cyI6W3sic2NoZW1lIjoiZXhhY3QiLi4u
content-type: application/json

Same challenge, decoded from the header, is mirrored in the JSON body:

{
  "x402Version": 1,
  "accepts": [
    {
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "maxAmountRequired": "10000",
      "resource": "/v1/data/crypto/spot/reference_price?entity=BTC-USD",
      "description": "crypto/spot/reference_price · latest read"
    }
  ]
}

3 · sign & retry

$ curl -i \
    -H "PAYMENT-SIGNATURE: eyJ4NDAyVmVyc2lvbiI6MSwicGF5bG9hZCI6ey4uLg==" \
    "https://api.seekingdata.dev/v1/data/crypto/spot/reference_price?entity=BTC-USD"

4 · 200 ok

HTTP/1.1 200 OK
PAYMENT-RESPONSE: eyJzdWNjZXNzIjp0cnVlLCJ0eEhhc2giOiI1Zn...

{
  "data": {
    "symbol": "BTC-USD",
    "price": "<reference price>"
  },
  "meta": {
    "confidence": 0.98,
    "staleness_ms": 100
  },
  "provenance": {
    "method": "outlier-trimmed cross-venue median"
  }
}

Auto-discoveryGET https://api.seekingdata.dev/.well-known/x402 is a machine-crawlable manifest of every priced endpoint — input/output schema, price, and network — so an agent can find and price a dataset before paying. Discovery endpoints (/health, /v1/catalog,/openapi.json, /llms.txt) stay free.
Keys still bypass itAPI-key and subscription callers skip x402 entirely and keep their plan gating — the pay-per-call path is purely for agents that arrive with no account. Want a key instead?Sign up free.

Proof, not promises

See exactly where every number comes from.

No black boxes. Every price ships with a confidence score and the exact sources behind it, automatically. You never have to take our word for it.

data

The number

The price itself, plus the raw per-venue prints it was built from: the inputs travel alongside the output, always.

{
  "symbol": "BTC-USD",
  "price": "<reference price>",
  "venues": [
    {
      "venue": "binance",
      "price": "<binance price>"
    },
    {
      "venue": "coinbase",
      "price": "<coinbase price>"
    }
  ]
}

provenance

Where it came from

The exact venues, timestamps, and method behind the number, so it can be checked, not just believed.

{
  "method": "outlier-trimmed cross-venue median"
}

Built for AI agents

Your agent can just ask.

Connect Claude, an IDE, or any agent framework with one command, and it can pull live prices, option chains, and scores on its own, sources included, automatically.

claude mcp add seekingdata -- npx -y @seekingdata/mcp

Defaults to the hosted API at https://api.seekingdata.dev. Self-hosting the server? Set SEEKINGDATA_API.

Question-shaped tools, each with enum'd arguments and a one-line "when not to use." Connect via MCP, see /docs for the full list.

Resources

Slow-moving reference data, loaded once and cached by the host, not re-fetched per turn.

catalogsymbolsvenues

A compound question, in one session

Illustrative session: real calls return live numbers; here's the shape of the exchange.

seekingdata MCP, stdio session

user

What's BTC trading at, and can I get downside protection with options right now?

tool callreference_price({ symbol: "BTC-USD" })

{
  "data": {
    "symbol": "BTC-USD",
    "price": "<reference price>"
  },
  "meta": {
    "confidence": 0.98,
    "staleness_ms": 100
  },
  "provenance": {
    "method": "outlier-trimmed cross-venue median"
  }
}

tool calloption_chain({ underlying: "BTC", option_type: "put", max_response_tokens: 300 })

{
  "data": {
    "underlying": "BTC",
    "underlying_px": "<underlying price>",
    "options": [
      {
        "instrument": "BTC-31JUL26-<strike>-P",
        "strike": "<strike>",
        "option_type": "put",
        "mark_price_usd": "<mark price>",
        "mark_iv": 0.44,
        "delta": -0.48
      }
    ]
  },
  "meta": {
    "confidence": 0.95,
    "truncated": false
  },
  "provenance": {
    "method": "options mark price snapshot from the derivatives exchange"
  }
}

assistant

BTC-USD is trading around the reference price above (98% confidence, sourced from Binance + Coinbase). For downside protection: the Jul-31 put shown above is quoting around its mark price (44% IV, delta −0.48) on the exchange.

Token-budgetedEvery tool takes max_response_tokens, truncates to whole rows (never mid-object), and returns meta.truncated + meta.next_cursor + a one-line hint.
Provenance inlineEvery envelope carries the exact venues, timestamps, and method behind the number, no separate lookup needed to decide whether to trust it.
RFC 9457 errorsFailures come back as application/problem+json with retryable, retry_after, and error_category: an agent can branch on a failure in code, not by parsing prose.
Honest tool contractsEnum'd args, readOnlyHint / idempotentHint / openWorldHint annotations, and outputSchema: the host can show what a tool will do before it's called.

More categories, same catalog

Explore everything we track.

Twelve categories, all live today: crypto, FX, stocks, commodities, macro, weather, sports, medical reference series, and the absurd cosmos, civic, economy and earth feeds — every metric backed by a working collector, never a broken link.

Browse the catalog →Open the explorer →

API quickstart

Three calls to get oriented.

Run these against the live API. Browsing the catalog is free and needs no key; pulling data needs a free key, which you can get in a minute at signup (no card). Every call returns the same simple shape: the value, its confidence, and where it came from. Full reference: /docs.

Browse the catalog

Public, no key required. Every category, product, and metric, live or planned.

curl https://api.seekingdata.dev/v1/catalog

Reference price

The generic data endpoint: /v1/data/{category}/{product}/{metric}. Free tier, needs your key.

curl -H "Authorization: Bearer $SEEKINGDATA_KEY" "https://api.seekingdata.dev/v1/data/crypto/spot/reference_price?entity=BTC-USD"

Option chain

Same endpoint shape, a pro-tier metric: a 403 here means upgrade, not broken.

curl -H "Authorization: Bearer $SEEKINGDATA_KEY" "https://api.seekingdata.dev/v1/data/crypto/options/chain?entity=BTC"

Data sources you can rely on.

Built by people using the data.

No public dashboards yet

See it work, right now.

Your AI agent pays per call — no account, no API key.

request

402

sign

data

See exactly where every number comes from.

data

meta

provenance

Your agent can just ask.

Resources

A compound question, in one session

Explore everything we track.

Three calls to get oriented.