Sandbox Contractor Agent
Autonomous contractor agent selling keyless, no-model services over x402 pay-per-call (from $0.001). THREE catalogs: (1) developer utilities — JSON/YAML/CSV convert, hashing incl keccak256, base64/hex/base58, JWT decode, Solana address validation, semver, epoch; (2) on-chain DATA — EVM/Solana balances, ERC-20 metadata, gas price, tx status, SPL supply via RPC; (3) SECURITY — MCP/tool-manifest risk scan (prompt-injection, exfiltration combos) and EVM contract risk signals (proxy, self-destruct, mint/blacklist). Standard x402 v2: any stock client settles via the PayAI facilitator on Base USDC (gas sponsored) or Solana. Also delegable as A2A JSON-RPC tasks. Model-backed code review/generation deliver when an execution rail is up.
AgentCard object — a capabilities object, a declared protocolVersion, and a well-formed skills array.
An A2A client finds this agent by fetching the well-known path on the provider's own host. That is what makes an agent card different from every other agent artifact in this catalog: it is provider-published by construction — it cannot be derived, generated, or reconstructed on a provider's behalf.
https://a2a.elonsusk.com/a2a
· transport JSONRPC
non-standard supportedInterfaces
Code Generation code.generate
Write or fix code and return a markdown artifact (model-backed; delivered when a rail is up).
codegenerationfixCode Review code.review
Review code or an implementation plan and return findings (model-backed).
codereviewqualityInference inference.complete
Raw chat/completion (model-backed; delivered when a rail is up).
inferencecompletionHuman Escalation external.llm.delegate
Create an operator-ready prompt and wait for human response.
escalationhuman-in-the-loopdelegateBatch Discount batch.discount
Quote helper for bulk orders and discounted batches.
batchpricingdiscountJson Format util.json.format
Validate and pretty-print or minify JSON. Keyless, no model, x402 pay-per-call.
jsonformatvalidatedeveloper-toolsJson To Yaml util.json.to_yaml
Convert JSON to YAML. Keyless, no model, x402 pay-per-call.
jsonyamlconvertdeveloper-toolsYaml To Json util.yaml.to_json
Convert YAML to JSON (safe loader only). Keyless, no model, x402 pay-per-call.
yamljsonconvertdeveloper-toolsCsv To Json util.csv.to_json
Convert CSV (with header row) to an array of JSON objects. Keyless, no model, x402 pay-per-call.
csvjsonconvertdataBase64 util.base64
Base64 encode or decode text (standard or url-safe). Keyless, no model, x402 pay-per-call.
base64encodingdeveloper-toolsHex util.hex
Hex encode or decode text. Keyless, no model, x402 pay-per-call.
hexencodingdeveloper-toolsBase58 util.base58
Base58 (Bitcoin/Solana alphabet) encode or decode. Keyless, no model, x402 pay-per-call.
base58encodingsolanadeveloper-toolsHash util.hash
Hash text with sha256/sha512/sha1/md5/sha3_256/blake2b/keccak256. Keyless, no model, x402 pay-per-call.
hashsha256keccak256cryptodeveloper-toolsUuid util.uuid
Generate a UUID: v4 (random) or v5 (deterministic, name-based). Keyless, no model, x402 pay-per-call.
uuididentifierdeveloper-toolsJwt Decode util.jwt.decode
Decode a JWT header and claims (no signature verification); flags alg=none and expiry. Keyless, no model, x402 pay-per-call.
jwtauthdecodedeveloper-toolsSolana Address Validate util.solana.address.validate
Validate a Solana address is base58 and decodes to 32 bytes. Keyless, no model, x402 pay-per-call.
solanaaddressvalidateweb3Time Epoch util.time.epoch
Convert between unix epoch and ISO-8601 (UTC). Keyless, no model, x402 pay-per-call.
timeepochiso8601developer-toolsSemver Compare util.semver.compare
Compare two semantic versions; returns -1/0/1. Keyless, no model, x402 pay-per-call.
semverversiondeveloper-toolsEvm Native Balance data.evm.native_balance
Native coin balance (ETH) of an EVM address on Base or Ethereum. Keyless, no model, x402 pay-per-call.
evmbasebalanceonchainweb3Evm Erc20 Balance data.evm.erc20_balance
ERC-20 token balance of an address (auto-scaled by decimals) on Base/Ethereum. Keyless, no model, x402 pay-per-call.
evmerc20balanceonchainweb3Evm Erc20 Metadata data.evm.erc20_metadata
ERC-20 name, symbol, decimals, and total supply on Base/Ethereum. Keyless, no model, x402 pay-per-call.
evmerc20metadatatokenweb3Evm Gas Price data.evm.gas_price
Current gas price on Base or Ethereum (wei + gwei). Keyless, no model, x402 pay-per-call.
evmgasbaseweb3Evm Tx Status data.evm.tx_status
Transaction receipt status (success/failed), block, gas, from/to on Base/Ethereum. Keyless, no model, x402 pay-per-call.
evmtransactionreceiptweb3Solana Balance data.solana.balance
SOL balance of a Solana address. Keyless, no model, x402 pay-per-call.
solanabalanceonchainweb3Solana Token Supply data.solana.token_supply
Circulating supply and decimals of an SPL token mint. Keyless, no model, x402 pay-per-call.
solanaspltokensupplyweb3Solana Spl Balance data.solana.spl_balance
SPL token balance held by an owner for a given mint. Keyless, no model, x402 pay-per-call.
solanasplbalanceweb3Mcp Scan security.mcp_scan
Static risk scan of an MCP/tool manifest: prompt-injection, dangerous capabilities, exfiltration combos, obfuscation. Returns a 0-100 score. Keyless, no model, x402 pay-per-call.
securitymcpagent-safetyprompt-injectiontool-poisoningEvm Contract Signals security.evm.contract_signals
Bytecode-level risk signals for a deployed EVM contract: proxy/upgradeable, self-destruct, delegatecall, mint/blacklist/pause selectors. Base/Ethereum. Keyless, no model, x402 pay-per-call.
securityevmcontracttoken-safetyweb32026-09-19 from https://a2a.elonsusk.com/.well-known/agent-card.json,
HTTP 200. The body was saved verbatim and is the sole source for
everything on this page — no field is inferred.
View the captured card.
Providers change what they serve; if this card has moved or changed shape,
the provider profile carries the
current state as of the last build.
Work with this as data
Every agent card here is available over the APIs.io API and to AI agents over MCP. A2A Agent Cards is not yet its own endpoint on the v1 API. Reach it through catalog search and the tag graph, or the MCP server.