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$ man cid-fetch

/cid-fetch

PRICE / CALL
$0.005
USDC · base mainnet · scheme: exact
METHOD
POST
CLUSTER
edgemarket
CATEGORY
uncategorized
STATUS
live
NAME
cid-fetch fetches the content behind an ipfs cid and optional path through public gateways, returning text, json, or base64 with a 5 mb cap
synonym alias of ipfs-fetch — reuses the canonical handler.
SYNOPSIS
POST https://x402.agentutility.ai/cid-fetch
     Content-Type: application/json
     X-PAYMENT:    <signed-transferWithAuthorization>

     { ... }
↳ first call → 402 Payment Required. Sign USDCtransferWithAuthorization, retry with theX-PAYMENT header.
DESCRIPTION

Fetches the content behind an IPFS CID and optional path through public gateways, returning text, JSON, or base64 with a 5 MB cap. Use it as a CID fetch API, IPFS content reader, or decentralized file fetcher.

INPUTrequest schema
propertytypedescriptionreq?
cidstringIPFS CID, CIDv0 (Qm... base58, 46 chars) or CIDv1 (bafy... base32). Required.required
pathstringOptional sub-path inside the IPFS directory, e.g. '/index.html' or 'metadata.json'. Leading slash optional.optional
max_bytesnumberMaximum response size in bytes. Default 1000000 (1 MB). Hard-capped at 5000000 (5 MB).optional
outputstringHow to return the content. 'base64' (default — safe for binary), 'text' (UTF-8 decode), or 'json' (UTF-8 decode + JSON.parse). Returns 502 if 'json' is requested and the body doesn't parse.
enum: base64 · text · json
optional
OUTPUTresponse shape
fieldtypedescription
cidstring
gateway_usedstring
content_typestring
size_bytesstring
contentstring
sourcestring
EXAMPLEStwo ways to call
EXAMPLE 1 · curl
curl -X POST https://x402.agentutility.ai/cid-fetch \
  -H 'Content-Type: application/json' \
  -d '{ }'
first response = 402 Payment Required with payment requirements; sign + retry with X-PAYMENT.
EXAMPLE 2 · mcp
# Install the MCP package for this endpoint's cluster
npx -y @agentutility/mcp-<cluster>

# Required: EVM private key with USDC on Base
export X402_PRIVATE_KEY=0x...

# Then call the cid-fetch tool from your MCP-aware agent.
MCP server handles payment automatically — your coding agent just calls the tool by name.
METADATA
tags
edge-marketcidfetchcid-fetch
methods
POST
cluster
edgemarket
price
$0.005 USDC per call
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basename-resolveResolves Coinbase Basenames (.base.eth) to Ethereum addresses and back, reading the Base mainnet L2 Resolver on-chain (no gas, no wallet).$0.005
current-balanceReads a wallet's current ERC-20 token balance with a read-only balanceOf call on Base, Ethereum, Arbitrum, Optimism, Polygon, BSC, or Ava…$0.005
defi-yield-poolsFilters and ranks thousands of DeFi yield-bearing pools by APY across every chain DeFiLlama tracks.$0.005
erc20-balanceReads an ERC-20 token balance on-chain across any supported EVM chain, including Base, Ethereum, Arbitrum, Optimism, and Polygon.$0.005
erc20-metadataReads ERC-20 token metadata: name(), symbol(), decimals(), and totalSupply() in parallel via public RPC on Base, Ethereum, Arbitrum, Opti…$0.005
flagged-tokensFeed of flagged risky Solana tokens: thin liquidity, extreme moves, sell pressure, very new pairs, and missing profile context.$0.005
SEE ALSO
agentutility · edgemarket · x402 · mcp · llms.txt · registry.json · bazaar.x402.org