Information Retrieval services

Payable information retrieval endpoints for agents, ranked by measured reliability.

api.nansen.ai

api.nansen.ai

73
score

Screens and filters perpetual futures contracts based on specified criteria.

USDC BaseBNB ChainSolanaX Layer

skim402.com

skim402.com

70
score

Skim: clean reader — URL to agent-ready markdown + structured metadata, ~4x smaller than raw HTML.

USDC Base

x402.twit.sh/users/search

x402.twit.sh

69
score

Search Twitter/X for user accounts matching a keyword or phrase. Returns up to 20 matching user profiles per page with pagination support. Useful for discovering users by topic, name, or keyword. Query params: query (string, required) - search keyword or phrase; next_token (string, optional) - pagination cursor from previous response, e.g. GET /users/search?query=bitcoin. Returns X v2 API-compatible JSON.

BTCUSDC BaseLightning

x402.twit.sh/users

x402.twit.sh

69
score

Bulk look up multiple Twitter/X user profiles by their numeric user IDs in a single request. Returns an array of full user profiles. Query param: ids (string, required) - comma-separated numeric Twitter user IDs, max 50, e.g. GET /users?ids=44196397,12,783214. Returns X v2 API-compatible JSON.

BTCUSDC BaseLightning

war-tracker.com

war-tracker.com

68
score

Retrieves media content related to tracked events or incidents.

down
USDC Base

sol.blockrun.ai

sol.blockrun.ai

66
score

Executes search queries across Solana blockchain data.

USDC Solana

api.babyblueviper.com

api.babyblueviper.com

66
score

invinoveritas /signals/full — the live Hyperliquid perps read our own bot enters on, recomputable per coin from the raw metrics we return (funding + 24h delta,

USDC Basexrpl:0xrpl:1

war-tracker.com

war-tracker.com

66
score

Returns information about strike events, categorized by type.

down
USDC Base

x402.api.agentmail.to

x402.api.agentmail.to

65
score

Returns a list of email inboxes or mailbox accounts.

USDC Base

email-verify-api-production-d262.up.railway.app

email-verify-api-production-d262.up.railway.app

65
score

Verify up to 100 emails in one call; returns a per-email record matching /verify.

USDC Base

email-verify-api-production-d262.up.railway.app

email-verify-api-production-d262.up.railway.app

65
score

Verify a single email: syntax, MX records, SMTP RCPT probe, catch-all, disposable, role-based, free-provider, typo suggestion, 0-100 score, and verdict.

USDC Base

postcode-api-production.up.railway.app

postcode-api-production.up.railway.app

65
score

Validate a UK postcode and report its normalised form, format validity, and whether it is currently active.

USDC Base

email-verify-api-production-d262.up.railway.app

email-verify-api-production-d262.up.railway.app

65
score

Check whether a domain has valid MX records and is not on the disposable list; also reports free-provider.

USDC Base

email-verify-api-production-d262.up.railway.app

email-verify-api-production-d262.up.railway.app

65
score

Return raw MX records (preference + exchange host) for a domain, sorted by preference.

USDC Base

fact-checker.api.klymax402.com

fact-checker.api.klymax402.com

65
score

Fact-check a claim by searching for evidence online

USDC Base

netintel-production-440c.up.railway.app

netintel-production-440c.up.railway.app

65
score

Look up domain registration metadata via RDAP — returns registrar, creation/expiry dates, nameservers, status flags, and an actionability score so agents can assess domain trustworthiness or availability risk.

USDC Base

netintel.dev

netintel.dev

65
score

Fetch metadata for any npm package — download counts, latest version, all versions list, dependencies, maintainers, repository URL, license, and a health score based on maintenance signals — so agents can evaluate dependencies, audit package ecosystems, and assess supply chain risk.

USDC Base

netintel.dev

netintel.dev

65
score

Query the Internet Archive Wayback Machine to check if a URL has ever been archived, get the closest snapshot to a given date, retrieve the most recent capture, and return archival history stats — so agents can access historical web content, verify past content claims, and recover deleted pages.

USDC Base

x402.shizu.me

x402.shizu.me

65
score

Fetch a PDF by URL and extract its text as JSON. Input: url (public http/https pointing to a PDF). Returns {url, pages, word_count, text}. Bounded to the first 50 pages; 3 MB max.

USDC Base

sanctions.lonestaroracle.xyz

sanctions.lonestaroracle.xyz

64
score

OFAC SDN sanctions screen for a name / entity / wallet (?name=)

USDC BaseSolana

unwrap.use.x402atlas.com

unwrap.use.x402atlas.com

64
score

Trace an HTTP redirect chain to its final destination without downloading page bodies. Returns every hop (URL + status), the final URL, and safety warnings — link-safety grounding for agents before they visit or cite a URL. Clean JSON.

USDC ArbitrumBasePolygonSolana

netintel.dev

netintel.dev

64
score

Call OpenAI's gpt-4.1-mini via a single pay-per-call x402 endpoint — no OpenAI account or API key needed, pay $0.005 per request in USDC. Standard OpenAI chat.completions request/response shape, capped input and output. Search terms: OpenAI, gpt-4.1-mini, chat completion, LLM, no API key.

USDC BaseSolana

netintel-production-440c.up.railway.app

netintel-production-440c.up.railway.app

64
score

Calculates IPv4/IPv6 subnet details from CIDR notation including network/broadcast addresses, netmask, usable host range, supernet, and possible subnets; for multiple CIDRs, detects overlaps and classifies relationships.

USDC Base

dns-intel-api-production.up.railway.app

dns-intel-api-production.up.railway.app

64
score

Discover subdomains for a domain via Certificate Transparency logs (crt.sh); returns a de-duplicated, sorted list.

USDC Base