All projects on Base matching “facts”

Token contract facts for agents on Base. Use when your agent is about to approve, receive or send an ERC-20: send address and get code size, EIP-7702 delegation, name, symbol, decimals, supply, proxy and upgrade admin, owner or renounced, and which privileged functions the bytecode has (mint, pause, blocklist, fees, limits, upgrade). Facts only: no grades, not investment advice. Built and run by W

Returns a single random fact as JSON in exchange for a micropayment.

Verify factual claims and check whether cited sources support them. Fact-check statistics, dates and source attributions in agent research and reports against web evidence, preserving reporting periods, units and population groups. Returns a verdict, explanation and cited sources; /v2/verify links evidence to source IDs. 0.20 USDC via x402 v2 on Base. Model-assessed; no signup or API key.

Pay a tiny amount of USDC and receive one delightfully useless fact.

Volume-anomaly observations across newly created BSC pools, from a 15-minute monitoring sweep: pools whose hourly volume spiked vs the prior hour (floor $1,000 and 100x), with pool name, hourly volume, spike ratio, price move and source link. Machine-readable monitoring feed for agents tracking early on-chain activity. Observation data only — thresholds uncalibrated; not signals, not financial adv

TraceFast knowledge graph: what an Ethereum address is, as proven facts — wallet or contract, proxy and upgradeable or not, a token and its standard, and for a token contract whether it can pause, mint or blacklist and whether it ever did. Each fact names the block it was evaluated at; an absent fact is not proven. Ethereum mainnet only. Path address: 0x-prefixed, 40 hex. Attribute dictionary: htt

Pre-pay Check: Ed25519-signed, deterministic facts about another x402 endpoint before you pay it: challenge validity, reachability and latency, host listing count, payout wallet reuse across hosts, last-called and payer trend from daily Bazaar snapshots. Use it when choosing between paid endpoints. Signed facts you can verify against the published key, not ratings; facts only, no advice. Query: ?u

List all 195 countries covered by the GlobalRules country-facts API, returned as ISO 3166-1 alpha-2 codes with country names. Use this endpoint first to discover which countries you can query for practical travel and business facts such as VAT rates, public holidays, tipping customs, power plugs, emergency numbers and visa rules (58 topics per country). Designed for AI agents, travel planners and

Real-time web search for AI agents. Search the web for current and up-to-date information, news, facts, research, documentation, and sources beyond model training data. Returns ranked structured JSON results with title, URL, description, and position for web grounding, RAG retrieval, research, and fact-finding. Send query, optional limit, and optional freshness as URL parameters. Keyless x402 pay-

Base token check: send an ERC-20 contract address on Base and get verifiable on-chain facts as JSON (name, supply, owner and whether ownership is renounced, upgradeable proxy, verified source, privileged-function hints such as mint/pause/blacklist, WETH/USDC liquidity on Uniswap V2/V3 and Aerodrome) plus risk flags and a short plain-language summary. Facts only, not financial advice. Does not chec

Cat Fact Ninja random fact (keyless). POST {max_length?} optional. Unpaid empty → 402; after settle empty/invalid → 400 charged:false. Soft disclose dog-ceo-breeds / meowfacts.

Submit one verifiable fact on the machine-payments beat for editorial review. Body: {"contributor_wallet": "0x... (Base, receives the bounty)", "category": "machine_payments_metrics|x402_endpoint_news|protocol_governance|pricing_change|other", "fact_statement": "one specific checkable claim, 20-600 chars", "source_url": "https://..."}. Agent-run review within ~48h fetches your source and checks it

Source-bounded fact-check. Verify a claim against provided source text. Returns verdict: supported, contradicted, or unverifiable. Does NOT search the web.

You.com Search API: real-time web search returning ranked results grouped by section (results.web, results.news), each with url, title and description; web results also carry snippets. Use when an agent needs fresh, citable web data (news, markets, company facts) to ground a decision. Query params: query (required), count 1-100 (default 10), livecrawl (web|news|all; fetches live page contents, cha

Live web search for AI agents: returns ranked results with title, URL, snippet, publish date and source. Neural + keyword search across the current web with automatic provider failover. Use it to find recent news, documentation, competitors, prices or any fact that needs a fresh source.

Fact-check numbers in Korean finance text: every checkable number (rates, KTB yields, FX, listed-company revenue and profit, % vs %p, 조/억/만 units) marked MATCH or MISMATCH against the official value with date and source (ECOS, KEXIM, DART). Numbers with no source stay unverified.

URL safety verdict: follows the redirect chain, detects homograph and punycode hostname tricks, and cross-references the destination host against the URLhaus threat feed. Returns safe, suspicious or malicious with reasons. Single-URL scope; domain-wide grading is /sitegrade and registration facts are /domain-intel.

Solana token mint intel: mint/freeze authority (renounced or live), supply, decimals, SPL vs Token-2022, Token-2022 extensions (permanent delegate, transfer hook, transfer fee, default-frozen, pausable), metadata (name/symbol/uri, mutability) and structural risk flags. Public on-chain facts, no verdict.

Token safety check (rug check) for AI agents before buying, sending or accepting a crypto token on Base, Ethereum or Solana: give its address, get name, supply, live on-chain price and pool liquidity, plus contract controls (owner, upgradeable proxy, mint, pause, blacklist, fee setters) or Solana mint and freeze authority, with plain warnings. Facts read from the chain, not a rating.

Web search API for AI agents: live Google search results (SERP) for any query as clean JSON, with ranked title, URL, snippet and date, plus the answer box. Search the web or search news only; filter by date (past hour to past year), keep to or leave out up to 5 sites. A fast Google search API / SERP API for grounding, RAG, research, fact checks and finding sources. Results via Serper.

FULL token check (BUNDLE): combines GoPlus risk flags (= liquidity-health) + contract/proxy/owner facts (= contract-profile) + Uniswap v3 pools vs WETH/USDC with quote-side liquidity in USD, in a single call. Objective signals, not a verdict. Use this instead of calling liquidity-health and contract-profile separately; use the individual tools only if you need just one aspect.

Genuinely fascinating fun fact about science, history, nature, or the universe.

For model cascades: is the small model's answer usable, or should the larger model be paid? Detects refusal, evasion, off-topic answers, contradiction and incompleteness; decides accept, review or escalate. Does not fact-check without a source: provide the source to check substance.

Creates an S2 cell token from a coordinate and level using the S2 geometry library. Missing facts are returned as null and named in unavailable_fields where applicable. Derived values disclose their method; source-backed values disclose source, time window and age.

What are the symbol, name, decimals, contract address and issuer of this stablecoin on this chain? Cited stablecoin token facts from a prepared dataset (USDC, EURC, USDT, PYUSD, DAI on the chains /v1/chain covers, where a permissively licensed source lists them): symbol, name, decimals, contract address, chain, issuer, each with a source citation and license. Fields not established from a source a

Ranks edit-distance proximity between a candidate name and supplied popular package names. Missing facts are returned as null and named in unavailable_fields where applicable. Derived values disclose their method; source-backed values disclose source, time window and age.

Selects and applies a supplied published CBAM default factor for a goods group. Missing facts are returned as null and named in unavailable_fields where applicable. Derived values disclose their method; source-backed values disclose source, time window and age. This is neither legal advice nor customs advice.

Validates EORI syntax and country-prefix consistency without asserting registration status. Missing facts are returned as null and named in unavailable_fields where applicable. Derived values disclose their method; source-backed values disclose source, time window and age. This is neither legal advice nor customs advice.

Website growth signals — Read one public website and return the observable growth signals: title and meta, CTAs, forms, chat and analytics tools, tech stack, structured data, blog freshness from the sitemap, robots. Facts only, never scores. $0.02 per call.

Validates the ISO 6346 check digit and separates owner, category and serial components. Missing facts are returned as null and named in unavailable_fields where applicable. Derived values disclose their method; source-backed values disclose source, time window and age.