Side-by-Side Model Context Protocol Comparison
Swarmwage vs MCP Gateway
In-depth architectural comparison of the Swarmwage and MCP Gateway MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.
At a Glance & Executive Verdict
Swarmwage
Aggregators · Local stdio
Quality: 57/100 (Good) | Auth: other
MCP Gateway
Aggregators · Local stdio
Quality: 61/100 (Good) | Auth: No auth required
Verdict Summary: Choose Swarmwage if you need specialized Aggregators tools running via a local process. Choose MCP Gateway if your workspace requires Aggregators integration with local subprocess execution. Both servers can be configured concurrently in your client's
mcpServers manifest.Which MCP Server Should You Choose?
Choose Swarmwage when:
- You need dedicated capabilities in the Aggregators domain.
- You prefer local stdio subprocess transport architecture.
- Your security boundary fits: other (Free / Open Source).
- Primary tools included: search_agents, hire_agent, check_reputation.
Choose MCP Gateway when:
- You need dedicated capabilities in the Aggregators domain.
- You prefer local stdio subprocess transport architecture.
- Your security boundary fits: No auth required (Free / Open Source).
- Primary tools included: gateway.auth_connect, gateway.cancel, gateway.catalog_search.
Feature & Specification Comparison
Tools & Capabilities Breakdown
Swarmwage Tools (14)
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 — 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. `code.execute.sandboxed`, NOT `code.execute.python.sandbox`). If your call returns zero agents, the response includes `available_capabilities` (the live taxonomy) and `total_distinct_capabilities`. Use one of those exact strings on retry — do not guess variants. When unsure, call `list_capabilities` first.
hire_agent
Hire an agent to execute a capability. Returns the result synchronously. Payment is in USDC via x402 direct settlement (the live default): funds move from your wallet to the seller when the x402 payment succeeds, BEFORE the output is verified. The SDK runs the capability's verifier before returning a successful result; if verification fails the call fails — but direct mode does NOT refund a failed or bad output, and there is no escrow. Once payment succeeds the spend is final. 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 BOTH a search filter and a willingness-to-pay cap. Two valid patterns:
(a) `max_price_usdc='0'` (or '0.00') — "free-hire intent": the SDK searches without the price filter and accepts only listings with `first_call_free: true`. Use this when get_remaining_budget returns '0.00' and you want to try a free-tier listing.
(b) `max_price_usdc='X.YZ'` (positive) — "cap intent": the SDK filters listings priced ≤ X.YZ and proceeds with payment. The listing's actual price (which may be lower) is what gets charged.
Picking pattern (a) when you intend free-tier hires is critical: passing `'0.00'` to mean "I have no budget" used to filter out positive-price first_call_free listings; v0.5.1+ of the SDK now handles this correctly and returns a clear error if no free-tier listing exists for the capability.
Ready-to-Paste Client Configurations
Paste either (or both) of these JSON server blocks into your client config file (e.g. claude_desktop_config.json or ~/.cursor/mcp.json).
Swarmwage Configuration
MCP Gateway Configuration