EchoLedger

echoledger-mcp

EchoLedger's MCP server. Analyze live Uniswap V2/V3, Balancer, and Curve stableswap pools — positions, price moves, pool health, rug signals, slippage, and depeg risk — or build a portable State Twin for off-MCP analysis, from any MCP-compatible AI client. Reads real chain state via a caller-supplied RPC; the endpoint itself is authless.

Endpoint: https://mcp.echoledger.ai/mcp (streamable-HTTP, authless).

Install

Claude Desktop

Settings → Integrations → Add server. URL: https://mcp.echoledger.ai/mcp

Claude Code

claude mcp add --transport http echoledger https://mcp.echoledger.ai/mcp

Cursor

Settings → MCP → Add new MCP server. Name: echoledger · Type: http · URL: https://mcp.echoledger.ai/mcp

Smithery

Listed at smithery.ai/servers/ic3moore/echoledger — connect via the Smithery gateway from any supported client.

Tools

The endpoint ships 11 tools over live Uniswap V2/V3, Balancer weighted (2-asset), and Curve stableswap (2-asset) pools. Two surfaces:

• 10 reactive primitives — one question, one answer, one chain read. Four of them also take a vector input (e.g. price_change_pcts[], amounts_in[]) to sweep a whole grid/curve in one call.
• BuildStateTwin — returns a portable State Twin (the pool's state as JSON) that a client rehydrates locally to run unlimited counterfactuals off the MCP, zero further RPC.

Every call takes pool_address, rpc_url, and pool_type, plus an optional chain_id guard and block_number pin — nothing is stored. Each reactive tool is protocol-specific and advertises only the pool_type values it accepts; pointing one at an unsupported type returns a clean error before any chain read.

Full reference — params, returns, and a verified example per tool: docs/TOOLS.md.

Scope: the Balancer tools cover 2-asset weighted pools; the stableswap tools cover 2-asset plain Curve pools (rate-bearing pools — metapools, LSD — are a later release). A stableswap tool pointed at a 3-coin or rate-bearing pool fails cleanly.

Uniswap V2/V3

AnalyzePosition

PnL decomposition for an LP position — impermanent loss, fees, and net.

"Analyze my position in the V3 USDC/ETH pool."

SimulatePriceMove

"What if price moves X%?" — projected reserves, position value, and IL.

"If ETH drops 20%, what happens to my V3 ETH/DAI position?"

CheckPoolHealth

TVL, reserves, LP concentration, and recent activity for a pool.

"Is this V3 pool healthy?"

DetectRugSignals

Threshold-based rug flags on a pool's on-chain state.

"Any rug signals on this V2 pair?"

CalculateSlippage

Slippage, price impact, and max trade size for a given trade.

"How much slippage on a 50 ETH buy in this V3 pool?"

Balancer (2-asset weighted)

AnalyzeBalancerLP

PnL decomposition for a 2-asset Balancer weighted-pool position, using the weighted-pool IL formula where the token weight shapes IL magnitude.

"How is my 80/20 BAL/WETH Balancer position doing?"

SimulateBalancerMove

"What if the base token moves X%?" — projected value and IL on a 2-asset weighted pool, weight-aware.

"If BAL drops 30%, what happens to my BAL/WETH Balancer LP?"

Curve stableswap (2-asset plain)

AnalyzeStableswapLP

PnL decomposition for a 2-asset Curve stableswap position via the amplified-invariant IL formula — small depegs can produce outsized IL at high A.

"Analyze my position in the crvUSD/USDC pool."

SimulateStableswapMove

"What if the peg shifts X%?" — projected value and IL on a 2-asset stableswap pool. At high A, large shocks may be physically unreachable (returned as null).

"What happens to my USDC/DAI Curve LP if USDC depegs 2%?"

AssessDepegRisk

IL across a ladder of depeg levels (default 2%, 5%, 10%, 20%, 50%) for a 2-asset stableswap position, with an optional constant-product benchmark.

"How exposed is my crvUSD/USDC position to a depeg?"

State twin builder (all four pool types)

BuildStateTwin

Reads a pool once and returns a portable State Twin — the pool's state as JSON (__type__ + fields + a content_hash). A client rehydrates it locally and runs unlimited counterfactuals (price moves, IL, slippage) off the MCP, with zero further RPC — build once, run N. Spans all four pool types. See the twin round-trip in docs/TOOLS.md and the echoledger package.

"Build me a reusable twin of the USDC/ETH 0.05% pool."

(Honest gap: it's a single-block STATE twin — history-derived health metrics stay server-side reads inside CheckPoolHealth/DetectRugSignals.)

How it works

echoledger-mcp reads live Uniswap V2/V3, Balancer, and Curve stableswap pool state through a caller-supplied RPC endpoint (BYO-RPC, passed per tool call). The endpoint is authless — no API key, no account. Nothing is logged or stored; each call pulls state, runs the analysis, and returns a typed result.

The analytics are powered by open-source DeFiPy — the same primitives, twin, and tools that run against synthetic recipes, now pointed at real pools. The math is open; the reports are paid.

Roadmap

• v0.2 — Balancer & Stableswap live reads ✓ shipped. The 5 Balancer/Stableswap tools went live on DeFiPy 2.2's LiveProviders (2-asset weighted + 2-asset plain Curve).
• v0.2.2 — honest schemas, vectors & the twin builder ✓ shipped. Per-tool pool_type enums; vectorized scenario inputs on the four scenario tools; and BuildStateTwin — the 11th tool — for portable, off-MCP twin analysis.
• N-asset & rate-bearing pools — 3-asset Balancer, N-coin and rate-bearing (metapool/LSD) Curve, once the upstream DeFiPy primitives extend past 2 assets.
• Distribution polish — OCI-package listing, DNS-verified namespace, and OIDC auto-publish.

Develop

python -m venv .venv && source .venv/bin/activate
pip install -e ".[dev]"

Run the server over streamable HTTP (binds to $PORT, default 8080):

PORT=8080 python -m echoledger_mcp.server      # endpoint at http://localhost:8080/mcp

Or over stdio for a local MCP Inspector smoke-test:

python -m echoledger_mcp.server --stdio
npx @modelcontextprotocol/inspector python -m echoledger_mcp.server --stdio

Tests (offline — fake provider + real twin/primitives):

pytest tests/

Live-RPC gate (real mainnet Uniswap V2/V3, Balancer, and Curve pools; needs your own RPC):

ECHOLEDGER_TEST_RPC_URL="https://eth-mainnet.example/v2/<key>" pytest tests/test_live.py -v

License

Apache-2.0. See LICENSE and NOTICE.

This project adapts code from DeFiPy (Apache-2.0).

See also

• DeFiPy (open-source substrate): https://defipy.org
• EchoLedger: https://echoledger.ai
• State Twins paper: https://arxiv.org/abs/2605.11522