FlexYield

Name: FlexYield
Author: JadeMind GmbH

AgentA2AMCP

RPC gateway for agents: six mainnets, measured failover, a key without signup, pay per call in USDC.

by JadeMind GmbHhomepage ↗v1.4.0

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Evidence

Everything here was measured by our prober or read from a registry. Nothing is self-reported.

30-day availability91/95 checks ok

Tools observed via MCP handshake

get_key — Get a FlexYield API key with no signup: public supply, 10,000 weighted units per UTC day, 5 requests/s, every tool. Use it once, when you have no key yet; then
bind_key_start — Step 1 of binding the API key you are calling with to a wallet: returns the exact SIWE (EIP-4361) message that wallet must sign. Use it when your key came from
bind_key_complete — Step 2 of binding the API key you are calling with to a wallet: pass the wallet's signature over the message from bind_key_start. Use it right after bind_key_st
claim_agent_start — Step 1 of claiming an agent by its EVM address for the account you are calling with: returns the exact SIWE message the agent's wallet must sign. Use it when an
claim_agent_complete — Step 2 of claiming an agent: verify the wallet's signature over the message from claim_agent_start and equip the agent with its own budgeted API key (default 50
create_api_key — Create an additional API key on the account you are calling with (a name, optional monthly unit cap). Use it to give a service or a teammate its own key with it
configure_key — Configure one API key of your account by id: monthly_request_cap (a monthly unit budget; omitted = unchanged, 0 = remove the cap), enabled (the list of services
revoke_api_key — Revoke one API key of your account by id; calls with that key stop working immediately and the key cannot be restored. Use it when a key leaked or a service is
list_api_keys — List the API keys of your account (scope='keys', default) or its agent fleet with wallet claims and budgets (scope='agents'). Use it to find a key id before con
get_billing_status — Billing state of your account: tier, whether payments are live, the subscription (plan, interval, price in USD cents, status, period end, cancel-at-period-end),
configure_services — Read or change the account-wide service settings: which gateway services (rpc, data, gas, tx_status, ens, prices, contracts, utils) are enabled and an optional
update_account — Update your account's preferences: notifications (notify_incidents, time_zone) and/or the insights that tailor the service (use_case, team_size, volume, region,
join_enterprise_wishlist — Send FlexYield an enterprise wishlist: what would need to be true for you to run on FlexYield (chains, SLAs, compliance, features, prices; max 1000 chars) plus
join_waitlist — Join the FlexYield early-access waitlist with an email and a qualifier (developer, investor or curious). Use it only when a human asked to be kept informed; an
list_plans — List FlexYield's public plans: price in integer USD cents, billing interval, monthly included units and burst rate limits, plus the enterprise line and the sign
get_usage — Your account's usage in one of three views. view='report': requests, weighted units, errors and latency per key, method and chain over a look-back window (hours
get_statement — Your account's statement for one billing period (default: the current one): invoice facts plus usage grouped by API key or agent, chain and method class — reque
manage_tickets — Your support tickets with FlexYield. action='create' (subject, message, optional request_id of the failing call, optional category) opens a ticket with the call
manage_feedback — Product feedback to FlexYield. action='submit' (kind: 'feature' | 'chain' | 'praise' | 'complaint' | 'other', title, optional body, optional chain) files it and
get_balances — Native balance and ERC-20 token balances of an address on one chain (eth_mainnet, base_mainnet, arbitrum_one, optimism_mainnet, polygon_pos, solana_mainnet; tok
get_history — Recent asset transfers (sent and received, newest first) of an address on one EVM chain with a data-capable upstream. Use it to answer 'what moved in or out of
get_prices — Prices. kind='gas' (chain): EIP-1559 gas recommendations (slow/standard/fast) computed from our pool on an EVM chain, 1 weighted unit. kind='token' (symbols, co
get_tx_status — Status of one transaction hash on any supported chain: confirmed, failed, pending or unknown, with confirmations and gas on EVM chains or slot and commitment on
resolve_ens — ENS resolution on Ethereum mainnet: pass a name ('vitalik.eth') to get its address, or an address (0x…) to get its reverse-record name, read on-chain through ou
get_abi — The verified ABI of a contract (with its name and match level) from Sourcify's open dataset on eth_mainnet, base_mainnet, arbitrum_one, optimism_mainnet or poly
decode_calldata — Decode a transaction's calldata against the target contract's verified ABI (Sourcify): the function signature, its selector and the argument values (static type
convert_evm — Offline EVM utilities, no chain call: op='checksum' (EIP-55 checksum and validity of input=address), op='convert' (unit conversion wei…gwei…eth: input=value, fr
verify_signature — Verify a signature offline: mode='personal' checks an EIP-191 personal_sign signature (message, 65-byte 0x signature, optional expected address); mode='siwe' ch
what_can_i_do — The status overview of the API key you are calling with: its door (how it was obtained: public via get_key, wallet-bound, or adopted by a paying owner), its tie
get_quote — Quote one JSON-RPC call before making it: the weighted units it costs (standard 1, heavy 2, or not offered) and the USD per 1M units on every lane (a lane = a p
explain_error — Explain a FlexYield error code (e.g. -32007): what it means, the steps to take and its doorway (the path past the limit that caused it). Use it whenever a call
recommend — A recommendation from our live measurements. what='chain': which chain fits a task (optional family, candidates, prefer), ranked from our probes and method rule
migrate — A compatibility report for switching your RPC provider to FlexYield: paste your current config as text (endpoint URLs, env lines, code) and get every endpoint m
buy_pack — Start the purchase of a prepaid unit pack (size 's': 1.2M units $10, 'm': 7M $50, 'l': 32M $200, +5 % units when bought here) and get a checkout URL the account
rpc_call — Send one JSON-RPC call through the FlexYield gateway — the same routing, failover, cache and meter as POST /rpc/{chain}. chain: 'eth_mainnet' | 'base_mainnet' |

Provenance

Where this record came from

Every source is kept verbatim. Field changes are logged as events.

Official MCP Registryio.flexyield/gateway

first seen 1 mo ago · fetched 2 d agoopen ↗

A2A Agent Cardhttps://flexyield.io/.well-known/agent-card.json

first seen 21 d ago · fetched 7 d agoopen ↗

Field history (12 recent events)

7 d ago · declared · version → "1.4.0"
21 d ago · declared · name → "FlexYield"
21 d ago · declared · kind → "agent"
21 d ago · declared · protocols → ["a2a","mcp"]
21 d ago · declared · publisherUrl → "https://flexyield.io"
21 d ago · declared · publisherName → "JadeMind GmbH"
21 d ago · declared · homepageUrl → "https://flexyield.io/docs"
25 d ago · declared · version → "1.3.2"
25 d ago · declared · summary → "RPC gateway for agents: six mainnets, measured failover, a key without signup, pay per call in USDC."
25 d ago · declared · description → "RPC gateway for agents: six mainnets, measured failover, a key without signup, pay per call in USDC."
1 mo ago · declared · summary → "Blockchain RPC gateway: six mainnets, multi-provider failover, toolbox, per-agent keys. Free tier."
1 mo ago · declared · protocols → ["mcp"]

when	check	result	http	latency	detail
7 h ago	mcp initialize	ok	200	49 ms	server flexyield 1.4.0 · protocol 2025-06-18 · 35 tools
13 h ago	mcp initialize	ok	200	57 ms	server flexyield 1.4.0 · protocol 2025-06-18 · 35 tools
20 h ago	mcp initialize	ok	200	41 ms	server flexyield 1.4.0 · protocol 2025-06-18 · 35 tools
27 h ago	mcp initialize	ok	200	51 ms	server flexyield 1.4.0 · protocol 2025-06-18 · 35 tools
34 h ago	mcp initialize	ok	200	40 ms	server flexyield 1.4.0 · protocol 2025-06-18 · 35 tools
2 d ago	mcp initialize	ok	200	34 ms	server flexyield 1.4.0 · protocol 2025-06-18 · 35 tools
2 d ago	mcp initialize	ok	200	36 ms	server flexyield 1.4.0 · protocol 2025-06-18 · 35 tools
2 d ago	mcp initialize	ok	200	47 ms	server flexyield 1.4.0 · protocol 2025-06-18 · 35 tools
3 d ago	mcp initialize	ok	200	41 ms	server flexyield 1.4.0 · protocol 2025-06-18 · 35 tools
3 d ago	mcp initialize	ok	200	354 ms	server flexyield 1.4.0 · protocol 2025-06-18 · 35 tools

FlexYield

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