| Cardano Defi Overview API Cardano DeFi overview: TVL trend, top protocols, stablecoins, DEX volume, fees — Genesis402 / UnyKorn Operator Network | unykorn.org | - | $0.01 | listed |
| Carrier Analytics API What does the full FMCSA carrier census look like, carrier by carrier, with authority and safety context attached? Bulk analytics feed in USDOT order: legal/DBA name, operating status, authority statuses on file, active insurance filings, safety rating, SaferGrade score, 24-month SMS inspection/out-of-service/crash summaries, fleet size, and address — flat rows, cursor-paginated up to 1000/page, filterable by state, minimum fleet size, or census add date. | govparse.io | - | $25.00 | listed |
| Carriers API How big is the FMCSA carrier dataset right now? Headline aggregates: total and active registered carriers, how many have a SaferGrade score and the grade distribution, carriers with inspection/crash history, and the current national driver/vehicle out-of-service baseline rates. | govparse.io | - | $0.001 | listed |
| Case Camel API Call when an agent needs text rewritten with the camel case transform. No network and no LLM. Exact $0.005 USDC. Prefer unpaid POST /v1/sandbox/case-camel first. | syntexa.ch | - | $0.005 | listed |
| Case Capitalize API Call when an agent needs text rewritten with the capitalize case transform. No network and no LLM. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/case-capitalize first. | syntexa.ch | - | $0.004 | listed |
| Case Cobol API Call when an agent needs text rewritten with the cobol case transform. No network and no LLM. Exact $0.007 USDC. Prefer unpaid POST /v1/sandbox/case-cobol first. | syntexa.ch | - | $0.007 | listed |
| Case Constant API Call when an agent needs text rewritten with the constant case transform. No network and no LLM. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/case-constant first. | syntexa.ch | - | $0.009 | listed |
| Case Convert API Converts text between camelCase, snake_case, kebab-case, PascalCase, Title Case, and URL slugs. | dt0ur.online | - | $0.01 | listed |
| Case Dot API Call when an agent needs text rewritten with the dot case transform. No network and no LLM. Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/case-dot first. | syntexa.ch | - | $0.001 | listed |
| Case Flat API Call when an agent needs text rewritten with the flat case transform. No network and no LLM. Exact $0.006 USDC. Prefer unpaid POST /v1/sandbox/case-flat first. | syntexa.ch | - | $0.006 | listed |
| Case Kebab API Call when an agent needs text rewritten with the kebab case transform. No network and no LLM. Exact $0.008 USDC. Prefer unpaid POST /v1/sandbox/case-kebab first. | syntexa.ch | - | $0.008 | listed |
| Case Lower API Call when an agent needs text rewritten with the lower case transform. No network and no LLM. Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/case-lower first. | syntexa.ch | - | $0.001 | listed |
| Case Pascal API Call when an agent needs text rewritten with the pascal case transform. No network and no LLM. Exact $0.006 USDC. Prefer unpaid POST /v1/sandbox/case-pascal first. | syntexa.ch | - | $0.006 | listed |
| Case Path API Call when an agent needs text rewritten with the path case transform. No network and no LLM. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/case-path first. | syntexa.ch | - | $0.002 | listed |
| Case Sentence API Call when an agent needs text rewritten with the sentence case transform. No network and no LLM. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/case-sentence first. | syntexa.ch | - | $0.004 | listed |
| Case Snake API Call when an agent needs text rewritten with the snake case transform. No network and no LLM. Exact $0.007 USDC. Prefer unpaid POST /v1/sandbox/case-snake first. | syntexa.ch | - | $0.007 | listed |
| Case Sponge API Call when an agent needs text rewritten with the sponge case transform. No network and no LLM. Exact $0.005 USDC. Prefer unpaid POST /v1/sandbox/case-sponge first. | syntexa.ch | - | $0.005 | listed |
| Case Swap API Call when an agent needs text rewritten with the swap case transform. No network and no LLM. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/case-swap first. | syntexa.ch | - | $0.003 | listed |
| Case Title API Call when an agent needs text rewritten with the title case transform. No network and no LLM. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/case-title first. | syntexa.ch | - | $0.003 | listed |
| Case Train API Call when an agent needs text rewritten with the train case transform. No network and no LLM. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/case-train first. | syntexa.ch | - | $0.01 | listed |
| Case Upper API Call when an agent needs text rewritten with the upper case transform. No network and no LLM. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/case-upper first. | syntexa.ch | - | $0.002 | listed |
| Case conversion Split an identifier or phrase into words and render it in every common case — camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, dot.case, path/case, Title Case and Sentence case. Handles acronyms (HTMLParser → html parser). | openverbs.com | - | $0.002 | listed |
| Cash cost to buy a target share count at price. Call when pre-trade cash check for prediction-market size targets. Returns total cost as deterministic JSON for $0.001 USDC via x402 on Base. First-part Cash cost to buy a target share count at price. Call when pre-trade cash check for prediction-market size targets. Returns total cost as deterministic JSON for $0.001 USDC via x402 on Base. First-party local math only—no RPC, live market feed, API keys, storage, or mediagen. Advisory only; the caller owns capital, risk, and production controls. | delx.ai | - | $0.001 | listed |
| Catalan number The n-th Catalan number Cₙ = C(2n, n)/(n+1), counting balanced bracketings, binary trees, and many other structures. Requires n ≤ 10000. | openverbs.com | - | $0.004 | listed |
| Cbam Factor API 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. | halowerk.com | - | $0.004 | listed |
| Cbam Scope API Checks a CN-code prefix against a caller-supplied extract of the published CBAM goods list. 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. | halowerk.com | - | $0.004 | listed |
| CelerAPI Search authoritative company registries by company name to resolve candidate legal entities and registration identifiers. Currently supports the United Kingdom (GB) and Norway (NO), with expanding jurisdiction coverage. Results are public-register evidence, not a KYC or KYB compliance determination. | celerapi.com | - | $0.005 | listed |
| Celestia API Celestia (TIA) price in USD now, with 24h and 7d change — Genesis402 / UnyKorn Operator Network | unykorn.org | - | $0.001 | listed |
| Celestial Result Compatibility API Compare two structured celestial result declarations using versioned rules. Reports mismatched conventions and missing prerequisites. No inferred settings, time/frame conversion, calculation verification or predictive validation. | mahastrategies.com | - | $0.007 | listed |
| Cert API Every currently valid TLS certificate publicly issued for one domain, read from the Certificate Transparency logs: issuer, validity window, days to expiry, revocation status and every hostname each certificate covers. It reports what was ISSUED, which is how you find certificates you did not know existed - not what the server is serving today. No API key, no account. | workers.dev | - | $0.005 | listed |
| Certified Extract API Certified extract: value + citation + archived-source sha256 + verification chain, Ed25519-signed. Refuses uncharged without evidence | asiaref.dev | - | $0.25 | listed |
| Certified Extract API Certified extract: value + citation + archived-source sha256 + verification chain, Ed25519-signed. Refuses uncharged without evidence | mearef.dev | - | $0.25 | listed |
| Certified Extract API Certified extract: value + citation + archived-source sha256 + verification chain, Ed25519-signed. Refuses uncharged without evidence | euroref.dev | - | $0.25 | listed |
| Certified Extract API Certified extract: value + citation + archived-source sha256 + verification chain, Ed25519-signed. Refuses uncharged without evidence | latamref.dev | - | $0.25 | listed |
| Certified Extract API Certified extract: value + citation + archived-source sha256 + verification chain, Ed25519-signed. Refuses uncharged without evidence | afriref.dev | - | $0.25 | listed |
| Certified Extract API Certified extract: value + citation + archived-source sha256 + verification chain, Ed25519-signed. Refuses uncharged without evidence | ausref.dev | - | $0.25 | listed |
| Cfdi API Verifies a Mexican electronic invoice (CFDI) with SAT (JSON body, not query params): status (vigente/cancelado), cancelability, and EFOS validation. Requires a real CFDI's UUID, issuer and receiver RFCs, and total; the example values are illustrative and return 404 (not charged). | run.app | - | $0.05 | listed |
| Cftc Commitments Of Traders API CFTC Commitments of Traders — weekly disaggregated futures positioning by commodity: managed-money long/short/net, producer-merchant, swap-dealer, and open interest. 20-year history, cleaned and canonicalized from the CFTC feed. Filter by metal (gold/silver/copper/platinum). | thevaultreport.com | - | $0.01 | listed |
| Chain Defi Overview In One Call API Chain DeFi overview in ONE call: TVL + trend, top protocols, stablecoins, DEX volume, fees — Genesis402 / UnyKorn Operator Network | unykorn.org | - | $0.01 | listed |
| Chain health check Live health of every supported chain in one call: chain id, block height and how stale the head is. Use it to pick a chain that is actually responding. Via eth_getBlockByNumber. | workers.dev | - | $0.005 | listed |
| ChainAnalyzer Multi-hop exposure analysis over the ChainAnalyzer graph. Returns direct and indirect exposure grouped by risk tier (mixer, darknet, sanctioned entity, exchange, bridge) plus detected money-laundering patterns such as layering and structuring. | chain-analyzer.com | - | $0.50 | listed |
| ChainAnalyzer Stablecoin issuer supply in one JSON call: pass the issuer as the `slug` query parameter. Returns total and circulating supply per chain, cumulative mint and burn totals, and the 20 most recent issuance / redemption events with transaction hashes. Same numbers as the public issuer page, shaped for agents. | chain-analyzer.com | - | $0.05 | listed |
| ChainAnalyzer Top transaction counterparties for an address with entity labels, category, per-counterparty transfer counts and observed flow totals. Reuses a scan of the same address from the last 24 hours when one exists, otherwise runs a fresh scan. | chain-analyzer.com | - | $0.25 | listed |
| ChainAnalyzer Is this destination a lookalike of an address the sender already trusts? Applies the address-poisoning similarity rule (leading and trailing characters that wallet UIs abbreviate to) between one destination and a caller-supplied list of known-good addresses. Pure string comparison when `known` is given, so it answers in milliseconds and never runs a scan. | chain-analyzer.com | - | $0.05 | listed |
| ChainAnalyzer Screen every address a single transaction touches. Collects the sender, recipient, token-transfer endpoints and token contracts of one transaction, then checks each against the known registry, seven sanctions lists (OFAC, UK, JP, UN, EU, CA, CH) and the ScamDB drainer database. Returns one verdict: block / review / clear. Much cheaper than a full fund-flow trace because nothing is expanded beyond the transaction itself. | chain-analyzer.com | - | $0.25 | listed |
| ChainAnalyzer Is this stablecoin still on its peg right now? Pass the token contract in the path and its chain as the `chain` query parameter. Returns the latest 15-minute VWAP of real DEX trades per chain, the deviation from par in the token's own peg currency (JPY or USD), and a one-word status (on_peg / watch / dislocated) at 0.5% and 2% thresholds. Reads a daily snapshot only — no external pricing call on the request path. | chain-analyzer.com | - | $0.05 | listed |
| ChainAnalyzer Who is this address? Returns verified entity labels from the ChainAnalyzer known registry (token issuers, exchange hot/cold wallets, protocol deployers, sanctioned entities, mixers) plus a ScamDB hit if the address is a known drainer. TRON addresses also resolve public Tronscan tags. Unreviewed and inferred labels are never returned. 12 chains. | chain-analyzer.com | - | $0.05 | listed |
| ChainAnalyzer Sign-time risk verdict for a destination or spender before value moves. Registry + ScamDB lookups plus at most one RPC call (approve spender code check), so it answers in milliseconds instead of running a full scan. Same verdict as the subscription REST API. | chain-analyzer.com | - | $0.10 | listed |
| ChainState Profile a Base address in one call instead of four to six lookups. Returns contract or externally owned plus code size, proxy detection across all seven slot layouts including the legacy OpenZeppelin slot Base USDC uses, the resolved implementation, ERC-165 and behavioural ERC-20 detection, token metadata, requested ERC-20 balances, and denylist hits. Answers unknown rather than guessing, and null rather than false when a contract stays silent. Not a guarantee that an address is safe. | schemasure.com | - | $0.01 | listed |
| Chainlink API Chainlink (LINK) price in USD now, with 24h and 7d change — Genesis402 / UnyKorn Operator Network | unykorn.org | - | $0.001 | listed |