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api.signalis.dev

api.signalis.dev

63
score

Paid ($0.03 USDC via x402). Historical Master Intelligence digests (1-168 hour lookback) — id, title, executive summary, sources used, processing time, and createdAt provenance per row. Compute-first / settle-after — you are never charged for an error.

USDC Base

api.delx.ai

api.delx.ai

63
score

Calculate step and overall conversion from ordered funnel stages. Use it as a bounded preflight or analysis step inside an enterprise agent workflow before data, policy, integration, security, or commercial decisions reach production. Returns deterministic machine-readable JSON for $0.003 USDC via x402 on Base or Solana. Execution is first-party, local-only, stateless, memory-only, and has no paid upstream or input retention. Results are advisory; the caller remains responsible for authorizatio…

USDC BaseSolana

api.delx.ai

api.delx.ai

63
score

Human-readable byte sizes. Call when presenting file sizes, cache usage, or download progress to users. Returns a human string like 1.5 KB from a byte count. $0.001 USDC per successful call via x402 on Base or Solana—deterministic first-party JSON, no API key, no subscription, and nothing is billed on structured validation errors.

USDC BaseSolana

api.delx.ai

api.delx.ai

63
score

EVM Next Base Fee Bound: EVM Next Base Fee Bound calculates upper and lower next-block base-fee bounds from bounded caller-supplied values without an external provider. Call EVM Next Base Fee Bound before signing, submitting, replacing, or accepting an EVM/Base transaction assembled from caller-owned data. Returns normalized transaction evidence, calculated budget or shape findings, and a fail-closed preflight status for EVM Next Base Fee Bound as versioned deterministic JSON. Price: $0.001 USD…

USDC BaseSolana

ozmium.org

ozmium.org

63
score

Ranked, fee-netted arbitrage routes into a target token on Base. For a USD budget we price the REAL executable swap (Coinbase CDP Trade API, no liquidity reserved) from every liquid input (USDC = the DEX-vs-Coinbase venue arb; ETH/WETH/cbETH/cbBTC/cbADA/cbXRP = cross-asset arbs), value the worst-case min-out against an INDEPENDENT Coinbase reference price, subtract gas + protocol fees, and rank by NET dollars captured. Full details: GET /v1.

USDC Base

social.gedx402.com

social.gedx402.com

63
score

SociaVault API proxy — youtube-video-comments. Query/body matches https://docs.sociavault.com/api-reference/openapi.json. GET/POST per route; x402 per call. $0.014 USDC per request.

USDC ArbitrumBaseOther EVMPolygonSolana

api.delx.ai

api.delx.ai

63
score

Durable outcome promise for agents: pay $0.01 USDC once, wait for a time or signed webhook condition, then claim an opaque continuation envelope with an Ed25519 receipt. Idempotent replay, no subscription, no polling provider, and no continuation is exposed before the capability check.

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USDC BaseSolana

voice.cyberwarex.com

voice.cyberwarex.com

62
score

Speech-to-text transcription for voice messages and audio clips. Upload a wav, mp3, m4a, ogg or webm file as multipart form-data and get the spoken text back as JSON. Runs a dedicated ASR model, so short noisy voice notes transcribe accurately. Accepts clips up to 10 minutes / 25 MB, billed per 10-second block. Use it to turn voice notes, call recordings, podcast clips or voicemail into text an agent can read.

USDC Base

agentbit.app

agentbit.app

62
score

Cheap generic EVM reads on Base for AI agents: native balance, nonce, contract code, ERC-20 token balance, eth_call, gas price, latest block, and transaction/receipt lookups. One call, read-only, $0.001.

USDC ArbitrumBaseOther EVMPolygonSolana

api.nativebtc.org

api.nativebtc.org

62
score

Pay once to receive a short-lived WebSocket ticket for the live Bitcoin mempool stream.

USDC ArbitrumBaseOther EVMPolygon

api.hergertsynthora.com

api.hergertsynthora.com

62
score

Decision verdict for prediction markets: probability, direction and multi-source evidence with declared sources. $0.05 USDC x402 Base.

USDC Base

api.hergertsynthora.com

api.hergertsynthora.com

62
score

SYNTHORA vendor-dossier: third-party cyber risk (TPCRM) dossier on any vendor, compiled live from passive OSINT (C0): Certificate Transparency footprint (crt.sh/certspotter), DNS via DoH (NS/MX/SPF/DMARC), RDAP when the TLD supports it, IP geolocation of the A record, Wayback historical footprint, conditional OSV vulnerabilities, GDELT coverage-tone signal, OFAC/EU sanctions name screen and official registries cross-check (company-dd). Structured verdict synthesized by the Comandante LLM with evidence doctrine: no raw data, no claim. Signed Ed25519 receipt. $0.25 USDC x402 Base. Free tier: 2 calls per wallet (X-WALLET header).

USDC Base

x402-mcp.onrender.com

x402-mcp.onrender.com

62
score

Should I submit this Base transaction now, and at what fee? One call returns submit-or-wait, max fee per gas and priority fee in gwei (EIP-1559), and the estimated cost in USD for an ETH transfer, USDC ERC-20 transfer, or x402 settlement on Base mainnet. Live gas price and congestion from Base RPC blocks, no API key. For bots that queue transactions: call before every send.

USDC ArbitrumBaseSolana

api.agentfeeds.jp

api.agentfeeds.jp

62
score

Estimated Base execution-gas cost of a settlement transaction (e.g. an ERC-3009 transferWithAuthorization), computed from our own current base-fee and ETH/USD observations. Execution gas only -- excludes priority fee and the Base L1 data fee, so treat this as a lower-bound estimate. Useful for micropayment break-even decisions. Descriptive statistics only; not investment advice.

USDC Base

pay-per-demo.vercel.app

pay-per-demo.vercel.app

62
score

Pay once for virtual admission to Agentic Commerce Demo Day

USDC Base

lionx402.com

lionx402.com

62
score

Keyless multi-chain JSON-RPC reads, Base + Ethereum, from $0.001 (?chain=ethereum)

USDC Base

fractalai.net.co

fractalai.net.co

62
score

Pay-per-Verify: an agent pays $0.01 to verify a post-quantum (ML-DSA-65 / Dilithium-3 or Dilithium-2, NIST FIPS 204; scheme auto-detected by size) signature over a message against a public key. A generic machine-to-machine PQC proof primitive for autonomous agents. x402-native.

USDC Base

Gold, silver and major macro FX reference in one call for portfolio-hedging agents. ECB +

api.hergertsynthora.com

62
score

Gold, silver and major macro FX reference in one call for portfolio-hedging agents. ECB + metals reference. Free source. $0.05 USDC via x402 on Base. SYNTHORA. Pay-per-call via x402 on Base. No charge on upstream failure.

USDC Base

agentbit.app

agentbit.app

62
score

The complete picture of a Base wallet in one call: profile (balance, type, ERC-20 holdings), recent transactions, top counterparties and sanctions/risk screening — merged from four AgentBIT wallet tools. $0.02.

USDC ArbitrumBaseOther EVMPolygonSolana

api.hyperextend.xyz

api.hyperextend.xyz

62
score

Forced-liquidation tape over a time window, reconstructed from the node-fills archive (Hyperliquid has no public liquidations feed). Each row is a trade row (coin, side, px, sz, time, hash, tid, users:[buyer, seller]) plus the liquidation markers (method market|backstop, markPx, liquidatedUser, dir). Priced per asset-hour ($0.005 base, $0.01 HIP-3/HIP-4) plus $0.05 per uncached archive hour pulled; up to 24 asset-hours/request, available ~2h after the hour closes.

USDC Basehyperliquid:mainnet

modelprices.xyz

modelprices.xyz

62
score

Microsoft Azure pricing table: per-token cost of every AI model Microsoft Azure serves, in one call — input, output, cache and batch USD per 1M tokens, ranked cheapest first, with context window and capability flags joined in. Compare LLM token cost inside Microsoft Azure and against other providers hosting the same model. Normalized from public sources, cross-checked, refreshed hourly.

USDC Base

modelprices.xyz

modelprices.xyz

62
score

Cloudflare Workers AI pricing table: per-token cost of every AI model Cloudflare Workers AI serves, in one call — input, output, cache and batch USD per 1M tokens, ranked cheapest first, with context window and capability flags joined in. Compare LLM token cost inside Cloudflare Workers AI and against other providers hosting the same model. Normalized from public sources, cross-checked, refreshed hourly.

USDC Base

modelprices.xyz

modelprices.xyz

62
score

Claude pricing table: what every Claude model costs per token right now — Claude 5, Claude Opus, Claude Sonnet, Claude Haiku — from Anthropic and every provider that resells or hosts them (Bedrock, Azure, Vertex, OpenRouter, Fireworks). Input, output, cache and batch USD per 1M tokens, sorted cheapest first, so you can compare Claude inference cost across hosts and pick the cheapest place to run one. Normalized, cross-checked, refreshed hourly.

USDC Base

modelprices.xyz

modelprices.xyz

62
score

Mistral AI pricing table: per-token cost of every AI model Mistral AI serves, in one call — input, output, cache and batch USD per 1M tokens, ranked cheapest first, with context window and capability flags joined in. Compare LLM token cost inside Mistral AI and against other providers hosting the same model. Normalized from public sources, cross-checked, refreshed hourly.

USDC Base