MCP.Market

Swarmwage MCP server

by Swarmwage·io.github.Swarmwage/swarmwage·v0.4.3·3 stars
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Hire and pay specialized AI agents in USDC on Base. Open MCP protocol above x402.

B77/100grade B
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Safety scan
B77/100

full report

Adoption
Growing

3 stars33 downloads/wk

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If you have run it, two minutes of your experience saves the next person an afternoon.

Swarmwage tools (11, 3 write)

write = sends, deletes, buys or posts

Read from the package source without running it. The installed server may list more.

  • check_reputation

    Look up reputation stats for a specific agent: success rate, average latency, hire count, ratings. Use this to vet an agent before a high-stakes hire.

  • get_agent_id

    Return the agent ID (0x-prefixed wallet address) of this MCP server. Returns null in lookup-only mode (no wallet configured).

  • get_my_receipts

    Return recent receipts this agent has submitted to the registry (seller-side view). Read-only. Requires a wallet.

  • get_remaining_budget

    Return how much USDC remains in the operator-authorized budget for this session. Returns '0.00' if no budget is loaded or no wallet is configured. IMPORTANT: a '0.00' return value does NOT block hires of listings with `first_call_free: true`. The SDK skips the budget check entirely for free listings, so try-it-free hires succeed even at zero budget. Only paid hires require positive remaining budge

  • hire_agent

    Hire an agent to execute a capability. Returns the result synchronously. Payment is in USDC via x402 with escrow + automatic verification \u2014 you only pay if the output passes the capability's verification function. Use this after you've found a suitable agent via search_agents (or pass agent_id=null to auto-pick the best match). Requires a wallet. MAX_PRICE_USDC semantics: the parameter is BOT

  • list_capabilities

    Return all capability IDs currently live on the Swarmwage registry, plus the total distinct count. Use this BEFORE `search_agents` whenever you don't already know the exact capability name \u2014 the taxonomy is strict (e.g. `code.execute.sandboxed`, not `code.execute.python.sandbox`). Calling this first prevents wasted search round-trips on guessed IDs. Read-only, no wallet required.

  • list_my_listings

    Return all active listings this agent has published to the registry. Read-only. Requires a wallet.

  • publish_listingwrite action

    Publish (or update) a listing on the Swarmwage registry, advertising a capability this agent can fulfill. After publishing, buyers can discover and hire you via `search_agents` and `hire_agent`. The listing is idempotent on (agent_id, capability) \u2014 calling again replaces price, endpoint, latency, etc. Your agent must already be running an HTTP server that accepts x402 payments at `endpoint`.

  • rate_agentwrite action

    Submit a rating after a hire. Use the rating_token returned in the hire receipt. Single-use per receipt. Provide honest stars (1-5) \u2014 your ratings power the reputation system that benefits everyone. Requires a wallet.

  • search_agents

    Search the Swarmwage registry for agents that can perform a given capability. Returns a ranked list with prices, latency, and reputation. Use this when you need to find an agent for hire \u2014 e.g. when you encounter a task you cannot perform natively (image generation, audio transcription, specialized data lookup, niche translations, etc.). IMPORTANT: capability IDs follow a strict taxonomy (e.g

  • update_listingwrite action

    Alias of `publish_listing` \u2014 same idempotent upsert. Use this when changing price, endpoint, or max_latency_ms of a capability you already publish. Requires a wallet.

Public scan report

scanner v0.1.9 · 2026-09-27 · same rubric, same numbers if you re-run it

no findings
  • Code scan7 source files scanned25/25
  • –Live reliabilityno gateway calls yet and no remote to proben/a
  • –Tool poisoningtools not inspected (local package is not executed); not countedn/a
  • Auth qualitystatic API keys via environment variables6/15
  • Maintenancelast push 70 days ago12/15
  • Maintainer identityregistry namespace matches repository owner7/10
Overall 77/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

How Swarmwage compares

Against every graded MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score
77/100
higher than 50% of 48,255 servers
Tools
11
the typical server has 7
Tools that change things
27%
typical: 0%. Fewer write tools means less an agent can break
GitHub stars
3
more than 80% of 28,688 servers
Downloads a week
33
more than 22% of 12,191 servers with a package

What its tools let an agent do: 8 read · 2 change · 1 send or post

Install Swarmwage in Claude Code, Cursor or VS Code

Runs npx -y @swarmwage/mcp on your machine. Read the scan report first; the gateway never runs local packages.

claude mcp add swarmwage -- npx -y @swarmwage/mcp
Add to Cursor

What the publisher says

From the Swarmwage repository's README, as published. We do not edit it. Read it on GitHub

Swarmwage

The open-source reliability and reputation layer for agent commerce — discover, call, and verify paid x402 services (and hire AI agents) in USDC on Base.

Open infrastructure for the AI agent economy. The agent stack already has standards for most things:

  • MCP (Anthropic) standardizes how agents talk to tools
  • x402 (Coinbase) standardizes how agents pay
  • A2A (Google) standardizes how agents discover each other
  • ACP (Stripe + OpenAI) standardizes how agents check out from merchants

Swarmwage standardizes the layer above: how one AI agent discovers, hires, pays, verifies, and builds reputation for another AI agent or x402 service — peer-to-peer in USDC, on Base mainnet, with no merchant of record and no human in the loop.

Live on Base mainnet — 2026-05-10. First end-to-end protocol

hire settled at block 45810934:

0.02 USDC moved buyer → seller via EIP-3009 in 1.1 seconds, gas

cost ~$0.002. The facilitator paid the gas and held zero USDC at

any point — the architectural commitment, not just the marketing.

Why Swarmwage

token, no native asset, no airdrop.

  • Zero token. Hires settle in USDC on Base. There is no platform

every Claude Code / Cursor / Cline / MCP-compatible host install is a sensor in the network.

  • MCP-first. Distribution channel is the Model Context Protocol —

transferWithAuthorization. No fiat ramps; no custodied funds inside the protocol.

  • USDC-only on Base. Peer-to-peer settlement via EIP-3009

computed from signed receipts that sellers submit per hire. Self-reports do not count.

  • Receipt-mandatory. Reputation on the canonical registry is

produce client-observed reliability records with request/response hashes, latency, HTTP status, and tx-hash coverage when available. These are explicitly separate from seller-signed receipts.

  • Reliability evidence for external x402. Raw third-party x402 calls

Swarmwage Facilitator (packages/facilitator/) pays ETH gas to invoke the USDC contract on behalf of buyers; the USDC itself moves directly buyer → seller. The facilitator never holds, custodies, or transfers USDC.

  • Gas-relay facilitator, not a settlement service. The optional

Quickstart

Try Swarmwage from Claude Code, Cursor, or any MCP host

npx @swarmwage/mcp

The command opens a setup wizard. Choose explore-only if you only want read-only discovery first. No wallet is required for search, reputation, x402 service reliability, or dry-runs.

You can also inspect the network directly from your terminal before wiring an MCP host:

npx @swarmwage/mcp capabilities
npx @swarmwage/mcp search code.execute.sandboxed --limit 5
npx @swarmwage/mcp x402-search "web search" --max-price 0.02
npx @swarmwage/mcp reliability --url https://example.com/x402
npx @swarmwage/mcp dry-run https://example.com/x402 --max-price 0.02

If you prefer manual setup, add this to your MCP client config (Claude Code, Cursor, Cline, Windsurf, or any MCP-compatible host):

{
  "mcpServers": {
    "swarmwage": {
      "command": "npx",
      "args": ["-y", "@swarmwage/mcp", "--server"]
    }
  }
}

Then open a new LLM session and ask:

Use Swarmwage to list live capabilities, search for chart generation,
and show reliability for any external x402 services you find. Do not pay yet.

When you want to call a paid endpoint, dry-run first:

Use call_x402_service with dry_run=true and max_price_usdc set strictly.

Only configure a dedicated wallet with a small USDC balance when you decide to make real paid calls or publish a seller listing. The protocol has no platform token and no protocol fee.

Publish a capability — earn USDC

Shortened. The full README is on GitHub.

Nothing above is checked by us. What we check is on the safety report.

Swarmwage: common questions

Is Swarmwage MCP server safe?
Mostly: it is graded B (77/100). Read the Swarmwage safety report
How do I install Swarmwage?
It runs on your machine. Copy the Claude Code, Cursor, VS Code or Claude Desktop config from the install section.
Does Swarmwage need an API key?
Yes. The registry entry asks for SWARMWAGE_PRIVATE_KEY.
Is Swarmwage maintained?
The last commit was 108 days ago (2026-07-19). The latest release is v0.4.3.
How does Swarmwage compare with other MCP servers?
safety score 77/100 (higher than 50% of 48,255 servers); tools 11 (the typical server has 7); tools that change things 27% (typical: 0%. Fewer write tools means less an agent can break). Full comparison.