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8 clients · secrets stay placeholders

JSON (mcpServers)Claude CodeCodexOpenCodeCursorVS CodeGemini CLIGoose

{
  "mcpServers": {
    "txwhy": {
      "type": "http",
      "url": "https://txwhy.vercel.app/api/mcp"
    }
  }
}

claude mcp add --transport http txwhy https://txwhy.vercel.app/api/mcp

[mcp_servers.txwhy]
url = "https://txwhy.vercel.app/api/mcp"

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "txwhy": {
      "type": "remote",
      "url": "https://txwhy.vercel.app/api/mcp",
      "enabled": true
    }
  }
}

{
  "mcpServers": {
    "txwhy": {
      "type": "http",
      "url": "https://txwhy.vercel.app/api/mcp"
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=txwhy&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vdHh3aHkudmVyY2VsLmFwcC9hcGkvbWNwIn0%3D"
}

{
  "servers": {
    "txwhy": {
      "type": "http",
      "url": "https://txwhy.vercel.app/api/mcp"
    }
  }
}

{
  "mcpServers": {
    "txwhy": {
      "httpUrl": "https://txwhy.vercel.app/api/mcp"
    }
  }
}

extensions:
  "txwhy":
    enabled: true
    name: "txwhy"
    type: streamable_http
    uri: "https://txwhy.vercel.app/api/mcp"
    timeout: 300

Quality 83 / 100good

protocol88 · weight 25

pass
protocol.modernsupports 2026-07-28 (server/discover)
pass
protocol.statelessanswers without a session
pass
protocol.transportstreamable HTTP
warn
protocol.list_ttltools/list declares ttlMs 0, so clients re-fetch it on every use

authorizationn/a · weight 15

n/a
auth.prm, auth.as_metadata, auth.cimdno remote uses OAuth
n/a
auth.secret_in_urlno templated URL

tool hygiene71 · weight 30

pass
tools.descriptionsevery tool has a description
pass
tools.description_lengthdescriptions are concise
pass
tools.schemasevery tool has an object input schema
fail
tools.annotationsno tool declares readOnlyHint or destructiveHint, so clients cannot tell safe calls from risky ones
fail
tools.directory_hintsno tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: explain_error (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); repair_transaction (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); diagnose_transaction (readOnlyHint, destructiveHint, idempotentHint, openWorldHint)
pass
tools.token_costabout 605 tokens to load every tool
pass
tools.api_dumptools are not a one-to-one API dump

stability100 · weight 15

pass
stability.changesno tool changes in 30 days
pass
stability.rug_pullno tool changed its meaning under the same name

dependenciesn/a · weight 15

n/a
deps.known_vulns, deps.mcp_sdk_version, deps.resolvableno npm or PyPI package

3 tools, about 605 tokens to load them all · tool set 95d54d944599 · checked 2026-10-19 10:20 UTC

Tool changes

No tool definition changes recorded. A server's first observation is its baseline; later probes record what changes.

Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed. How it is computed.

Trust 80 / 100

no-repository

provenance45

liveness100

freshness100

hygiene80

+website +reachable +uptime-100% +updated-11d-ago -no-repository

Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed. How it is computed.

Endpoints

remote	auth	reachable	uptime 30d	p50	protocol	last ok
`https://txwhy.vercel.app/api/mcp` streamable-http	none	yes	100%	495 ms	2026-07-28	2026-10-19

Tools (3)

`diagnose_transaction`	Explains why a transaction that landed on mainnet failed: the exact failing instruction in the call tree, the named error, its cause, and how to fix it. Read-only and fast. Use repair_transaction when you want a working transaction back.
`explain_error`	Looks up what a custom program error code means for a given program, using 1,800+ named errors from major Solana programs plus the runtime's own errors. Use it when you only have a code such as 6001 or 0x1771 from a simulation or an RPC response.
`repair_transaction`	Give it a Solana transaction that failed, or one you are about to send. It finds the cause and returns a rebuilt UNSIGNED transaction that has been simulated against live mainnet state to prove it passes. Fixes expired blockhashes, compute-unit limits, priority fees, loaded-data limits, slippage on plain Jupiter swaps (fresh quote, same tolerance), and slippage on direct Pump.fun, PumpSwap, Raydium AMM v4, Meteora DBC and Meteora DAMM v2 swaps (only the limit moves, never more than 25% against the user). Handles legacy, v0 and version 1 (SIMD-0385) transactions and durable nonces. When the failure cannot be fixed by rebuilding (not enough funds, a private program's own error), it says so and explains why instead of returning something that would fail again. Pass exactly one of `transaction` or `signature`. Sign the returned transaction with your own key and send it within about 60 seconds.

Schemas: list_tools.

Similar MCP servers

Official server.json

{
  "name": "io.github.SUNDRAM07/txwhy",
  "title": "TxWhy",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://txwhy.vercel.app/api/mcp",
      "type": "streamable-http"
    }
  ],
  "version": "0.2.0",
  "websiteUrl": "https://txwhy.vercel.app",
  "description": "Failed Solana transaction in, working transaction out. Exact cause, rebuilt tx, verifiable repair."
}