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Graph Advocate routes to six protocol-specific MCP servers. Every one is free, installs with npx, and reads The Graph directly with your own API key. You do not need to call Graph Advocate to use them — routing you to them is the point.
These are alternatives, never the primary answer. Each is a thin wrapper around subgraphs and REST APIs an agent can call directly. The MCP packages the calls with friendly tool names and saves you writing the GraphQL — that is the whole value, and it is a real one.

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The packages

Most need a free Graph API key from thegraph.com/studio in GRAPH_API_KEY.
Retired packages. predictfun-mcp (2026-08-05), substreams-search-mcp (2026-08-11) and create-substreams-sink-sql (2026-08-17) were unpublished from npm — their npx commands 404. Use the underlying surfaces instead: the Predict.fun REST API (testnet api-testnet.predict.fun/v1/markets is keyless), the public Substreams registry GET substreams.dev/v1/registry/packages?query=<term>, and substreams sink postgres|clickhouse from the Substreams CLI.

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Uniswap

Eight tools across 13 subgraphs — V2, V3 and V4 on Ethereum, Base, Arbitrum, Polygon, Optimism and BSC. Subgraph-ID addressed and schema-adaptive, so a subgraph version bump does not break it. Good for: “Top Uniswap V3 pools on Base by volume”, “Compare WETH/USDC liquidity across V2, V3 and V4”. For derived Uniswap answers — pre-trade liquidity checks, spot-vs-perp basis, per-wallet accumulation — see Uniswap pre-trade & flow. Those are paid endpoints because they assemble something the raw subgraph does not contain. The basis JOIN in particular has no MCP equivalent: it spans two venues.

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Aave

40+ tools over Aave V2, V3 and V4, including cross-chain liquidation risk and V4 hub/spoke topology. Good for: “Top Aave V3 markets by TVL on Ethereum”, “Recent Aave liquidations above $50K”.

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Polymarket

35 tools spanning the Gamma and CLOB REST APIs and the Polymarket subgraphs — live prices, order books, trader P&L, UMA resolution status. As of v2.1.1 it also covers CLOB V2 builder attribution, which answers “which frontend routed this flow” — a question no V1 contract emits the data for.

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Lending, Limitless, Predict.fun

graph-lending-mcp compares protocols through Messari’s standardized schema, so Aave and Compound become directly comparable. graph-limitless-mcp covers Limitless on Base. predictfun-mcp covers Predict.fun on BNB Chain and needs no key at all.

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Machine-readable

Every package above is declared in Graph Advocate’s capability catalog with its install command, auth requirement and example prompts:
That endpoint is the source of truth — this page is generated from the same metadata.