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Annalist

For bots that poll: crowd-state events (a perp entering or leaving a state) since a timestamp, newest first, up to 7 days back. Each event is signed with the mark price at the time. Not investment advice.

Visit api.annalist.dev

Host	api.annalist.dev
Price	$0.005–$0.05 per call
Network	Base
Paid endpoints listed	35
Calls, last 30 days*	73
Most unique payers on one endpoint (30 days)*	4
Last paid call*	2026-10-17
Tags	hyperliquid, crypto, funding, agent-economy, trust, crowd, base-rates, pricing

* From the public x402 Bazaar index (snapshot 2026-10-18T04:07Z); reported by the facilitator, not measured by us.

Endpoints

URL	Method	Price
`https://api.annalist.dev/v1/crowd/changes` For bots that poll: crowd-state events (a perp entering or leaving a state) since a timestamp, newest first, up to 7…	GET	$0.005
`https://api.annalist.dev/v1/crowd/perp` Use before acting on a Hyperliquid perpetual to see whether it is crowded or in a hype state and what historically…	GET	$0.01
`https://api.annalist.dev/v1/crowd/history` Signed historical crowd-state events for backtesting: up to 30 days per call, optionally filtered by coin and state.…	GET	$0.05
`https://api.annalist.dev/v1/crowd/market` Market-wide crowding on Hyperliquid: breadth of 7-day moves, how many perps are up 50%+/100%+ in a week, share of…	GET	$0.01
`https://api.annalist.dev/v1/smart/perp` Use before acting on a Hyperliquid perpetual to see how its most profitable traders are positioned: how many wallets…	GET	$0.01
`https://api.annalist.dev/v1/ai/changes` Recent changes to AI model prices and availability across providers, newest first: price cuts and raises per field…	GET	$0.01
`https://api.annalist.dev/v1/apis/api` One watched public API's contract record: current version, operation count and keys, deprecated operations, security…	GET	$0.005
`https://api.annalist.dev/v1/ai/retirements` Retirement calendar for AI models across platforms: shutdown dates, 'not sooner than' floors, states and recommended…	GET	$0.005
`https://api.annalist.dev/v1/web/census` Our weekly census of 65,000 top sites: how many sites and stores publish UCP or ACP agent-checkout profiles, agent and…	GET	$0.01
`https://api.annalist.dev/v1/packages/check` Supply-chain check of a popular package (the 8,000 most used on each of npm, PyPI, crates.io and Go): latest version…	GET	$0.01
`https://api.annalist.dev/v1/commerce/stores` Stores from our weekly census of 65,000 top sites, filtered by what a shopping agent needs: ships to a country, UCP…	GET	$0.01
`https://api.annalist.dev/v1/apis/changes` Dated contract changes in widely used public APIs (Stripe, GitHub, OpenAI, Twilio, Slack, Plaid, Datadog and more),…	GET	$0.01
`https://api.annalist.dev/v1/ai/prices` AI model prices per million tokens (input, output, cache, batch) with context window, for about 4,000 models across…	GET	$0.01
`https://api.annalist.dev/v1/web/readiness` One site's agent readiness from our weekly census of 65,000 top sites: UCP and ACP agent checkout (its MCP endpoint,…	GET	$0.005
`https://api.annalist.dev/v1/mcp/changes` Tool changes across remote MCP servers in the Official MCP Registry, newest first: tools added, removed or redefined…	GET	$0.01
`https://api.annalist.dev/v1/deps/digest` One call for all of an agent's dependencies: npm, PyPI, crates.io and Go packages (new publishers, install scripts,…	GET	$0.02
`https://api.annalist.dev/v1/mcp/server` Use before connecting a remote MCP server: independent checks by registry name or URL. Uptime and connect time from…	GET	$0.01
`https://api.annalist.dev/v1/checks/changes` What changed in x402 service listings, from daily snapshots of Coinbase's Bazaar: price raises and cuts, endpoints…	GET	$0.01
`https://api.annalist.dev/v1/checks/service` Use before paying an x402 service: independent checks by host or URL. Uptime and latency from repeated unpaid probes,…	GET	$0.01
`https://api.annalist.dev/v1/checks/seller` Checks for an x402 seller wallet on Base: the services that pay out to it and their grades, and USDC received over 30…	GET	$0.01
`https://api.annalist.dev/v1/prices/benchmarks` Price benchmarks for x402 services by category (seller tags such as search, llm, weather, market-data): how many…	GET	$0.01
`https://api.annalist.dev/v1/hip3/perp` Use before trading a stock, index, commodity or FX perpetual on Hyperliquid (builder-deployed, HIP-3; coins like…	GET	$0.01
`https://api.annalist.dev/v1/outcomes/market` One Hyperliquid outcome (prediction) market by id: readable title, structured details (teams, thresholds, deadlines,…	GET	$0.01
`https://api.annalist.dev/v1/vaults/hlp` Hyperliquid's own market-making vault (HLP), which takes over liquidated positions: account value, APR, PnL over a…	GET	$0.01
`https://api.annalist.dev/v1/prices/service` Price history of an x402 service by host or URL: each listed endpoint's price, first-seen date and changes, price…	GET	$0.01

Source: x402 Bazaar discovery API (Coinbase CDP) · Licence: Public discovery metadata; descriptions by each provider. Listed in x402 pay-per-call APIs. We list tools; we do not test, rate or endorse them.

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Annalist

Endpoints

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