AgentIndex x402 MCP Server

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AgentIndex x402 is answering right now. Last checked 2 min ago. It exposes 143 tools. Last commit 20 Oct 2026.

Jev-powered decisions, web search, PDF/web to Markdown, summarize. From $0.001, no API key.

Uptime history 64 days of history · worst day 93%

64 days agonow

100.0%

Uptime 24h

92 of 92 checks

143

Tools

read from the server

277 ms

Response time

average over 24h

Stars

last commit 20 Oct 2026

What changed 280

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 6 September 2026. No other catalogue keeps this.

20 Oct 2 tools appeared company_leads, due_diligence

19 Oct 2 tools appeared list_agent_cards, publish_agent_card

19 Oct 2 tools disappeared list_agent_cards, publish_agent_card

12 Oct a tool description was rewritten2 times that day fact_check

5 Oct a tool description was rewritten ask_model

4 Oct 3 tools appeared base_can-sell, base_quote, base_simulate

4 Oct a tool description was rewritten base_estimate-gas

3 Oct 25 tools appeared base_allowance, base_basename, base_block and 22 more

3 Oct 10 tool descriptions were rewritten base_allowance, base_basename, base_erc721-tokens and 7 more

2 Oct 27 tools appeared contact_kairos, coordination_thread_schema, coordination_thread_snapshot_schema and 24 more

and 206 more, back to 6 September 2026

What the code does

We read the source, 3 d ago · tools taken from the live server · rules 995398eba69f

Capabilities

What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.

Page executes code built at runtime app/templates/daily.html:162, app/templates/live.html:460, app/templates/missions.html:51 и ещё 2

  if (!DAYS.length) { tbody.innerHTML = '<tr><td colspan="11" class="empty">Aucune donnée pour l\\'instant.</td></tr>'; return; }

Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.

This code can reach further than it looks

We found places where it runs commands, builds paths or queries from values it is given. None of that is a flaw by itself — it becomes one when the code changes, and code changes quietly between releases. We re-read it on every one.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 2 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add x402 --transport http https://x402.agentindex.world/mcp/

Settings → Connectors → Add custom connector, then paste this address

https://x402.agentindex.world/mcp/

~/.codex/config.toml

[mcp_servers.x402]
url = "https://x402.agentindex.world/mcp/"

.cursor/mcp.json

{
  "mcpServers": {
    "x402": {
      "url": "https://x402.agentindex.world/mcp/"
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "x402": {
      "type": "http",
      "url": "https://x402.agentindex.world/mcp/"
    }
  }
}

Available tools 143

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

base

base_allowance

ERC20 allowance on Base mainnet via RPC: how much a spender is approved to move from an owner balance, read with allowance(owner,spender) eth_call.

base_basename

Resolve a Basename, Base's native ENS-equivalent, to its wallet address via the L2 Basenames resolver.

base_block

Fetch a Base mainnet block header and transaction hashes by number, tag (latest/earliest/safe/finalized), or hash via eth_getBlockByNumber/eth_getBlockByHash.

base_block-number

Latest Base mainnet block height via eth_blockNumber - the current chain tip.

base_call

Generic read-only eth_call against any Base mainnet contract - pass raw calldata, get the raw return data back.

base_can-sell

Can I sell this token? Honeypot check that simulates a real buy then a real sell of a Base mainnet token in one atomic on-chain call via Uniswap V2 - if the sell reverts, that is a honeypot, reported with the exact decoded reason. Factual, never predictive.

base_chain-id

Base mainnet chain ID (EIP-155) via eth_chainId - confirm which network you're actually talking to.

base_code

Check whether a Base mainnet address is a contract via eth_getCode - returns bytecode size, zero for an externally-owned account.

base_contract

Contract introspection on Base mainnet - is it a contract, bytecode size, best-effort owner(), and whether it's a proxy.

base_erc1155-balance

ERC1155 multi-token balance for a wallet and token id on Base mainnet via balanceOf(address,uint256).

base_erc20-balance

ERC20 token balance for a wallet on Base mainnet - balanceOf() and decimals() batched into one Multicall3 round trip.

base_erc20-transfers

ERC20 Transfer event logs for one token over a Base mainnet block range (max 2,000 blocks) via eth_getLogs.

base_erc721-tokens

NFT holdings for a wallet in one Base ERC721 collection, owned token IDs via ERC721Enumerable (tokenOfOwnerByIndex) - up to 20 tokens, requires the collection to implement Enumerable.

base_estimate-gas

Gas estimate for a Base mainnet swap or any other call (to/from/value/data) via eth_estimateGas, without broadcasting a transaction.

base_events

Smart contract event logs on Base mainnet (Base contract events) via eth_getLogs - filter by contract address and up to 4 topics, up to 2,000 blocks, raw logs with topics, data, block and tx hash.

base_live-balance

Native ETH balance plus up to 20 ERC20 token balances for one wallet on Base mainnet, in a single Multicall3 round trip regardless of token count.

base_network-info

Base mainnet network info in one call: chain ID, block height, and current gas price (wei and gwei).

base_nft-metadata

NFT metadata URI for an ERC721 token on Base mainnet via tokenURI - the on-chain pointer (IPFS, HTTP, or data URI), not a fetch of the document itself.

base_nft-owner

Who owns this NFT? ERC721 owner lookup on Base mainnet via ownerOf(tokenId).

base_nonce

Next transaction nonce for any Base mainnet wallet via eth_getTransactionCount - how many transactions it has sent.

base_pending

The current pending Base mainnet block (mempool, not yet mined) - unconfirmed transactions via eth_getBlockByNumber('pending').

base_proxy

Is this Base contract an upgradeable proxy? Proxy contract detection for EIP-1967 (transparent/UUPS), beacon, or EIP-1822 patterns, returning the implementation address.

base_quote

Slippage estimate, swap quote, and best DEX price on Base - compares Uniswap v2, Uniswap v3, and Aerodrome on-chain via Multicall3, returns amount received, chosen path, and price impact.

base_receipt

Transaction receipt via eth_getTransactionReceipt - status, gas used, and event logs for a mined Base mainnet transaction.

base_simulate

Simulate a Base mainnet transaction before sending it - will it succeed, estimated gas, and the decoded revert reason if it would fail.

base_storage

Read a contract storage slot on Base mainnet via eth_getStorageAt - the raw 32-byte value, decoded as hex and unsigned integer, zero-filled if unset.

base_total-supply

Total supply for an ERC20 (normalized by decimals()) or ERC721 (raw count, no decimals) contract on Base mainnet.

base_tx

Base transaction lookup by hash - sender, recipient, value, calldata, gas and block, live from Base mainnet via eth_getTransactionByHash.

validate

validate_coordination_thread_snapshot

Validate a coordination thread snapshot against the v1 schema — free. Pass the snapshot object as JSON.

validate_coordination_thread_turn

Validate a coordination thread turn against the v1 schema — free. Pass the turn object as JSON.

validate_ean

EAN-8 or EAN-13 barcode checksum validation (auto-detected by length).

validate_honest_delivery_refusal

Validate an honest delivery refusal against the v1 schema — free.

validate_iban

ISO 13616 IBAN mod-97 checksum validation, with optional BIC (ISO 9362) format check.

validate_imei

IMEI (15-digit mobile device identifier) Luhn checksum validation.

validate_isbn

ISBN-10 or ISBN-13 checksum validation (auto-detected by length).

validate_isin

ISIN (ISO 6166 security identifier) Luhn checksum validation.

validate_luhn

Luhn (mod 10) checksum validation, as used by most payment card numbers.

validate_relationship_memory

Validate a relationship memory card against the v1 schema — free. Pass the card object as JSON.

validate_return_visit_pledge

Validate a return visit pledge against the v1 schema — free. Pass the pledge object as JSON.

validate_routing

US ABA bank routing number (9-digit) checksum validation.

validate_siret

French SIRET (14-digit business establishment number) Luhn checksum validation. Note: the rare La Poste SIREN exception to the standard rule is not applied.

validate_tool_delivery_receipt

Validate a tool delivery receipt against the v1 schema — free. Pass receipt JSON; optional content re-verifies delivery.digest.

validate_vin

North American VIN check-digit validation (NHTSA standard, position 9) plus WMI manufacturer lookup for a small set of known codes.

time

time_add

Add a fixed duration (days/hours/minutes/seconds) to an ISO 8601 datetime.

time_between

Duration between two ISO 8601 datetimes, as total seconds and a days/hours/minutes/seconds breakdown.

time_business-days

Count weekdays (Mon-Fri) between two dates, inclusive of both endpoints.

time_convert

Convert an ISO 8601 datetime from one IANA timezone to another (handles DST automatically).

time_format

Format an ISO 8601 datetime using a strftime pattern.

time_humanize

Human-readable relative time ('2 hours ago', 'in 3 days') between a datetime and a reference (default now).

time_iso-week

ISO 8601 week number, ISO year and ISO weekday (1=Monday) for a date.

time_parse

Parse a date/time string (ISO 8601 by default, or a given strptime format) into its components.

geo

geo_bbox

Bounding box (min/max lat and lon) enclosing a list of points.

geo_bearing

Initial compass bearing (0-360 degrees, clockwise from true north) from point 1 to point 2.

geo_distance

Great-circle distance between two lat/lon points (haversine formula). Returns km, mi or nm.

geo_dms

Convert decimal degrees to degrees/minutes/seconds, or DMS back to decimal degrees.

geo_geohash

Encode a lat/lon point into a geohash string (precision 1-12 characters).

geo_midpoint

Geographic (great-circle) midpoint between two lat/lon points.

geo_point-in-polygon

Ray-casting point-in-polygon test (planar approximation - fine for city/region-scale polygons).

mesh

mesh_claim_bounty