Ethereum mainnet's ERC-8004 identity registry passed 46,973 registered agents as of this week (checked 2026-08-03) — the clearest onchain proof yet that agent identity is turning into infrastructure, not a demo screenshot. At the same time, the SatoHub library — the mapped stack of what builders actually use to build onchain agents — grew to 369 tracked resources, and one number stands out: more than a third of them are MCP servers. Here's the state of the onchain agent economy for the week of 2026-W32, straight from our own tracked data.
The library, by the numbers
369 resources tracked. The category mix tells you where the building is actually happening:
- ▸MCP — 134 (36% of the library, easily the largest category)
- ▸API / SDK — 45
- ▸Agent Framework — 29
- ▸Skill Repo — 27
- ▸Trading Tool — 27
- ▸Wallet Infrastructure — 25
- ▸Data Tool — 22
- ▸Developer Tool — 20
- ▸DeFi Tool — 14
- ▸Security Tool — 10
- ▸Onchain Agent — 6
- ▸Agent Launchpad — 3
- ▸Agent Marketplace — 3
- ▸Research Tool — 2
- ▸Research Paper — 1
- ▸Other — 1
MCP alone outnumbers the next three categories combined. If you're mapping where the onchain agent stack has consolidated, it's around the Model Context Protocol as the connective tissue between an agent and everything it can touch — wallets, DEXs, data feeds, price oracles. The prompt is the cute part; the MCP server is increasingly the actual product.
Note what's still thin: only 6 resources are tagged as an actual Onchain Agent (the autonomous thing itself, as opposed to a tool to build one), and just 3 apiece for launchpads and marketplaces. The tooling layer is far ahead of the deployed-agent layer — which tracks with where SatoHub itself is focused: the builder comes before the marketplace.
Where it's built
By chain, the library skews multichain and Base-heavy:
- ▸Multichain — 136
- ▸Base — 120
- ▸Ethereum — 100
- ▸Solana — 92
- ▸Arbitrum — 53
- ▸Polygon — 46
- ▸Unknown — 39
- ▸BNB Chain — 36
(Resources can span more than one chain, so these aren't mutually exclusive.) Base and Ethereum lead the single-chain counts, with Solana close behind — no surprise given where agent-wallet and payment-rail tooling has concentrated.
Onchain identity keeps climbing
ERC-8004's Identity Registry on Ethereum mainnet now shows 46,973 registered agents, per our check on 2026-08-03. That's a count of onchain registrations, not a claim about how many of those agents are actually doing anything useful — registering an identity is cheap, running a real agent isn't. But it's a real, verifiable number, and it's the kind of receipt the "agents need portable identity" argument has been missing. Full breakdown: [satohub.ai/resources/erc-8004](https://satohub.ai/resources/erc-8004).
Sato Score leaders this week
A reminder before the leaderboard: the Sato Score measures how open, active, and verifiable a listing is — maintenance, code transparency, docs, provenance, independent verification. It is not a safety, quality, or returns grade. With that framing intact, this week's High-tier leaders:
- ▸Raydium — 95
- ▸Drift Protocol — 91
- ▸Coinbase AgentKit — 88
- ▸TradingAgents — 88
- ▸Trust Wallet Agent Kit (TWAK) — 86
- ▸BlockRun MCP — 86
All six sit in the High tier (≥70). Methodology: [satohub.ai/sato-score](https://satohub.ai/sato-score).
New in the library
Six additions landed this cycle (2026-07-19): Ultrade MCP, PaladinFi Swap MCP, Kirha Crypto (data tool), MetaMask mcp-x402, Metaplex Agent Kit (mpl-agent), and Squads MCP. Three of six are MCP servers — consistent with the category's lead across the whole library.
Notable moves this week
- ▸BlockRun MCP shipped two point releases back to back — v0.34.0 added Google's
nano-banana-2to its image tool, then v0.35.0 followed with ByteDance'sseedream-5-pro. Fast iteration on the image-generation leg of an MCP toolset most builders reach for on the trading/data side. - ▸elizaOS/eliza landed exact-head evidence on PR #17424, tightening the provenance trail on a framework that's one of the most-forked in the space.
- ▸crypto-quant-signal-mcp pushed to v1.25.0 and unbrowse to a v11.3.2 preview — both incremental, both evidence that the smaller tools in the library are shipping as often as the headline names.
What to watch
Watch the MCP share of the library — if it keeps climbing past a third, the onchain agent stack is consolidating around one integration protocol faster than most builders have priced in. And watch the ERC-8004 count against how many of those registered agents actually show up doing anything checkable — identity is the easy part; activity is the number that matters next.
Build yours
This is the map. If you're building an onchain agent — a trading bot, a payments agent, a data-fetching skill — the stack above is what it's built from: MCPs, wallets, frameworks, chains, all tracked with evidence, not vibes. Describe what you want to build and Sato maps the stack: [satohub.ai/build](https://satohub.ai/build).