Comparison is not about who is cheaper, but about what each call actually delivers. This page lists only publicly verifiable hard parameters; no subjective scoring.
Price or range per call denominated in USDC. A range means endpoints of the same service differ in price — open the source document to check item by item.
Number of MCP tools or HTTP endpoints. More is not automatically better, but it decides how many scenarios a single integration covers.
Whether there is a free tier, a preview endpoint or a trial period. The reality of the Agent economy: people try for free first, then start paying.
Base dominates (USDC, ~200ms finality, gas paid by the facilitator); a few use SKALE / Solana.
Marks whether the figure comes from public docs, a manifest (/.well-known/x402.json) or a directory excerpt; excerpts are flagged "not verified item by item".
No liveness probing at MVP stage, so these two columns stay honestly blank; once probing is connected, real numbers go in row by row — nothing is invented ahead of time.
The most crowded category in x402: for the same market data, price per call runs from $0.002 to $0.05 — a 25× spread.
| Service | Price per call (USDC) | Network | Endpoints / tools | Free quota | Price source |
|---|---|---|---|---|---|
| Kiro Crypto Signals | $0.005 – $0.02 | Base | 3 paid endpoints | Yes (preview endpoint) | Public docs |
| GoldBean | $0.01 – $0.05 | Base | 7 endpoints | — | Directory excerpt |
| AgentBanks | $0.003 (market data) | Base | Market data + Base DeFi TVL | Yes (gas price) | Public docs |
| x402-api | Price not published | Base | 8 endpoints | — | Directory excerpt |
| x402-bazaar-mcp | Priced per Bazaar | Base | 17 tools | — | Directory excerpt |
| x402farm-mcp | Price not published | Base | 23 tools | — | Directory excerpt |
| AgentServices | Price not published | Base | 50+ endpoints | — | Directory excerpt |
| PreReason | $0.01 – $0.03 | Base | 17 market briefs | — | Public docs |
| CrossFin | Price not published | Base | 15 Korea market APIs | — | Directory excerpt |
| agentdata-mcp | Price not published | Base | 16 tools | — | Directory excerpt |
| Feegate marketplace catalog | $0.002 – $0.005 | Base | 6 tools | Yes (discovery layer entirely free) | Pricing on this site |
The category Agent uses most. Low price, high call volume — a good fit for "free quota + pay-per-call beyond it".
| Service | Price per call (USDC) | Network | Endpoints / tools | Free quota | Price source |
|---|---|---|---|---|---|
| Skim (web cleanup) | $0.002 | Base | Read + structured extraction | — | Public docs |
| PicoPayd | $0.001 – $0.01 | Base | Utility APIs (validation / DNS / WHOIS / conversion) | — | Public docs |
| Pylon | Price not published | Base | 20 capabilities | — | Directory excerpt |
| x402 Bazaar | Priced per endpoint | Base / SKALE | 69 endpoints | — | Public docs |
| x402-mcp | Priced per endpoint | Base | 100+ API | — | Directory excerpt |
| JMT x402 MCP Server | Price not published | Base | 25 endpoints | — | Directory excerpt |
| Blixtworks | Price not published | Base | 63 tools | — | Directory excerpt |
| Satelink RPC | $0.10 / 1000 calls | Base (settlement) / Polygon (service) | JSON-RPC batch | Yes (500 calls/day/IP) | Public docs |
The priciest category, because real compute or real hardware sits behind it (TEE, post-quantum, physical SIM).
| Service | Price per call (USDC) | Network | Notes | Price source |
|---|---|---|---|---|
| Private AI inference (AgentBanks) | $0.01 | Base | Inference per call | Public docs |
| Cloudflare Workers AI (x402 integration) | $0.01 | Base | Edge inference example | Public docs |
| TensorFeed | $0.02 / credit | Base | AI industry intelligence, with tiered discounts | Public docs |
| Zuluworks PQC Shield | $0.01 – $0.10 | Base | Post-quantum channel / KYA trust score | Public docs |
| EP AgentIAM | $0.01 – $0.02 | Base | 9 Agent identity and integrity verification endpoints | Public docs |
| Onyx Actions | $0.003 (verification code) / $0.05 (SMS) | Base | Physical SIM, removes the signup wall | Public docs |
| ZKProofport | Price not published | Base | zk identity (TEE attestation) | Directory excerpt |
| Cryptorefills | Priced per item | Base | Gift cards / eSIM, Agent commerce | Public docs |
| resolved.sh | $24 / year (subdomain) | Base | Domain + discovery surface + hosting for data sales | Public docs |
Half the people searching "how much does xx data API cost" are buyers; the other half are sellers who want to list. A comparison page puts us into the price coordinate system of the x402 ecosystem and turns that second half into customers — the page itself is an acquisition funnel.
Our own marketplace already runs endpoint liveness monitoring and a changelog (auto-discovery + health probes). The next step is to point the same probing at ecosystem services, and "uptime / P50 latency / last verified" become real numbers instead of blanks.
Self-serve listing costs $0; the platform only takes a cut of settled volume. Once listed, your product enters the sync pipeline to the official MCP Registry and major directories automatically.