Uptime (30d)%100.0

Latency (p50)934 msfaster than 18% of servers

Protocol eralegacy

Tools66

dev.workers.kikoribera03.flat-rate-llm/x402-tools

https://flat-rate-llm.kikoribera03.workers.dev/mcp ↗

Description

61 x402 pay-per-call tools that chain: each answer names the next call. No API key, no account.

What our measurements say

dev.workers.kikoribera03.flat-rate-llm/x402-tools is a remote MCP server published at flat-rate-llm.kikoribera03.workers.dev. It has been probed 15 times since 9/12/2026. It answered in 15 of them (100.0%), a near-uninterrupted record. Median response time is 934 ms, a delay an agent will notice. It exposes a broad tool surface of 66 tools. On the protocol side it still runs 2025-11-25 and has not moved to the newer spec.

LegacyLegacy ⚠Website ↗Version: 1.0.0First probe: 2026-09-12 15:21:42Last probe: 2026-09-13 21:01:02

Agent readability score

Can an LLM agent pick the right tool here — names, descriptions and parameter clarity are assessed.

Agent readability score

Tool names are clear but descriptions lack contextual usage guidance and parameter clarity.based on measured tool list

Strengths

Tool names are generally descriptive and indicate their primary function.
Comprehensive coverage of EVM-related operations and utility functions.

Weaknesses

Descriptions often state functionality without explicitly explaining when to use the tool.
Parameter names and types are sometimes ambiguous or lack clear documentation of required/optional status.
Significant overlap between EVM tools (e.g., 'evm_balance' vs 'evm_erc20_balance') creates potential confusion for agents.

llm_completion — Parameter 'sistema' lacks clear explanation of its purpose or expected input format.
evm_token_price — Description cuts off mid-sentence, leaving critical details about the return value unexplained.
evm_call — Overlapping functionality with 'evm_receipt' and 'evm_estimate_gas' creates ambiguous tool selection scenarios.

Verdict

The toolset demonstrates strong technical coverage but suffers from inconsistent documentation quality. While tool names are generally clear, many descriptions lack contextual usage guidance, and parameter definitions are often insufficiently explained. The high number of EVM-related tools with similar purposes increases the risk of agent confusion during tool selection.

9/12/2026, 9:37:05 PM

Event narrative

No changes in compliance or smoke status observed during the period.

Risk: low

Advice

Continue monitoring for any future changes in compliance score or smoke status. Ensure alerts are configured for deviations from current values.

Supported versions

2025-11-25

as declared by server/discover + initialize

Capabilities

tools

Schema score

100

66 tools

Schema compliance

tools/list structure, inputSchema validity, and a functional smoke test — the components of the 0-100 score.

100/100

Excellent66 tools

tools/list schema valid
inputSchema is valid JSON Schema
Smoke test not run this round
Cold-start: cold 39ms → warm 38ms (penalty 1ms)

Tools

Tools the server advertised in the latest measurement — measured, not catalog-claimed.

catalog0 params
FREE, no payment needed. Lists all 65 tools with a real example of the input and of the output each one returns, plus what a call costs and how to pay for it. Call this first if a tool answered HTTP 402.
llm_completion3 params · 1 required
LLM inference at a flat $1.00 per call, with no account, no API key and no token metering. POST a prompt, get the completion: the same price for 10 tokens or 4000, while metered gateways scale with usage. Automatic failover across several large models; typical response under 1s. Pay per call in USDC over x402 - nothing to sign up for. $1.00 per call, paid over x402 (USDC).
- promptstringrequired
- sistemastring
- maxTokensnumber
evm_balance2 params · 1 required
Native coin balance (ETH, MATIC...) for any address, on Base, Ethereum, Polygon, Arbitrum or Optimism. Flat price, no rate limits, no API key. Via eth_getBalance. $0.005 per call, paid over x402 (USDC).
- addressstringrequired
- chainstring
evm_erc20_balance3 params · 2 required
ERC20 token balance for any wallet - USDC, USDT, DAI or any token - via balanceOf. Returns the raw amount and the decimals so you can format it. Via eth_call (balanceOf). $0.005 per call, paid over x402 (USDC).
- addressstringrequired
- tokenstringrequired
- chainstring
evm_token_info2 params · 1 required
Name, symbol, decimals and total supply of any ERC20 contract in one call. Useful to label a token address before showing it to a user. Via eth_call. $0.005 per call, paid over x402 (USDC).
- tokenstringrequired
- chainstring
evm_token_price3 params · 1 required
Spot price of any ERC20 read straight from the deepest Uniswap V3 pool against USDC, on Base, Ethereum, Polygon, Arbitrum or Optimism. Returns the pool address, fee tier, liquidity, sqrtPriceX96, tick and block, so the number can be audited instead of trusted. No aggregator and no API key: the source is the chain itself. Via eth_call. $0.005 per call, paid over x402 (USDC).
- tokenstringrequired
- quotestring
- chainstring
evm_gas1 param
Current gas price and base fee for any supported chain, in wei and gwei, plus the cost estimate of a plain transfer. For agents planning a transaction. Via eth_gasPrice. $0.005 per call, paid over x402 (USDC).
- chainstring
evm_block1 param
Latest block height and timestamp of any supported chain, plus how old the chain head is in seconds. Tells an agent whether a node is in sync. Via eth_getBlockByNumber. $0.005 per call, paid over x402 (USDC).
- chainstring
evm_tx2 params · 1 required
Full transaction details by hash, merged with its receipt: from, to, value, gas used, status and block. One call instead of two. Via eth_getTransactionByHash. $0.005 per call, paid over x402 (USDC).
- hashstringrequired
- chainstring
evm_nonce2 params · 1 required
Next transaction nonce for any address, and whether the address is a contract. What an agent needs before signing a transaction. Via eth_getTransactionCount. $0.005 per call, paid over x402 (USDC).
- addressstringrequired
- chainstring
evm_is_contract2 params · 1 required
Tells whether an address is a smart contract or a plain wallet, and how big its bytecode is. A cheap safety check before sending funds. Via eth_getCode. $0.005 per call, paid over x402 (USDC).
- addressstringrequired
- chainstring
evm_chains0 params
Live health of every supported chain in one call: chain id, block height and how stale the head is. Use it to pick a chain that is actually responding. Via eth_getBlockByNumber. $0.005 per call, paid over x402 (USDC).

Availability history

Event log

Derived by comparing consecutive probes — changes in era, protocol version, build and reachability.

yesterdayAdded to watch — era: Legacy

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Markdown

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Raw observations

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https://flat-rate-llm.kikoribera03.workers.dev/mcp

Run	Era	Modern	ms	Legacy	ms	Versions
2026-09-13 21:01:02	Legacy	402	10678	200	541	2025-11-25
2026-09-13 18:57:30	Legacy	402	1081	200	987	2025-11-25
2026-09-13 16:52:42	Legacy	402	1352	200	1186	2025-11-25
2026-09-13 14:49:35	Legacy	402	791	200	460	2025-11-25
2026-09-13 12:47:19	Legacy	402	515	200	376	2025-11-25
2026-09-13 10:45:14	Legacy	402	934	200	499	2025-11-25
2026-09-13 08:43:04	Legacy	402	527	200	242	2025-11-25
2026-09-13 06:40:42	Legacy	402	11235	200	1087	2025-11-25
2026-09-13 04:35:29	Legacy	402	1105	200	1133	2025-11-25
2026-09-13 01:33:33	Legacy	402	11188	200	1027	2025-11-25

dev.workers.kikoribera03.flat-rate-llm/x402-tools

Description

What our measurements say

Agent readability score

Agent readability score

Strengths

Weaknesses

Verdict

Event narrative

Advice

Schema compliance

Tools

Availability history

Event log

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Raw observations

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