Rates by 402rates
https://api.402rates.com/mcp/rates ↗
Description
Source-backed treasury data, settlement costs. Free instrument records and history.
What our measurements say
Rates by 402rates is a remote MCP server published at api.402rates.com. It has been probed 6 times since 9/12/2026. It answered in 6 of them (100.0%), a near-uninterrupted record. Median response time is 168 ms, placing it among the faster endpoints. It offers a narrow, focused set of 9 tools. On the protocol side it still runs 2025-11-25 and has not moved to the newer spec.
Agent readability score
Can an LLM agent pick the right tool here — names, descriptions and parameter clarity are assessed.
Agent readability score
Strengths
- Some tool names clearly indicate their purpose (e.g., 'get_rwa_instrument').
- Descriptions mention 'free' access and shared service information for transparency.
Weaknesses
- Multiple descriptions are cut off mid-sentence, reducing usability.
- Parameter definitions lack detailed type specifications and required/optional clarity.
- Tool overlap exists (e.g., 'cheapest_settlement_chain' vs. 'compare_settlement_costs').
compare_rwa_snapshots— Incomplete description truncates critical details about data authentication.get_rwa_instrument— Parameter 'ticker' lacks context on valid input formats.cheapest_settlement_chain— Overlaps with 'compare_settlement_costs' without clear differentiation.
Verdict
Event narrative
Sign up free to generateRaw observations
Schema compliance
tools/list structure, inputSchema validity, and a functional smoke test — the components of the 0-100 score.
- tools/list schema valid
- inputSchema is valid JSON Schema
- Smoke test not run this round
- Cold-start: cold 43ms → warm 47ms (penalty 0ms)
Tools
Tools the server advertised in the latest measurement — measured, not catalog-claimed.
compare_rwa_snapshotsFree comparison of two supplied 402rates Treasury snapshots: yield, issuer divergence, source identifiers, calculation windows and data availability. Reports numeric threshold crossings without assigning economic significance. No new data access, authentication of snapshots, historical reconstruction or automatic monitoring. Examples are synthetic.
beforeobjectafterobjectthreshold_bpsnumber
list_capabilitiesFree capability and MCP tool catalogue for Rates by 402rates. Contains this product and shared service information only.
get_manifestFree OpenAPI manifest for Rates by 402rates. Contains this product and shared service information only.
base_urlstring
get_rwa_instrumentReturns the free frozen-contract state view for one tracked tokenized treasury: identity, Open Treasury Yield Basis result or explicit unavailable reason, issuer-term evidence cells, verified deployments and evidence dates. Three distinct tickers are free per caller in a rolling hour; repeats stay free, and the fourth returns BREADTH_LIMIT with the paid complete-snapshot path. An omitted ticker returns only the known ticker list.
tickerstring
get_rwa_historyReturns free normalized observations for one tracked instrument, one reconstructible recorder source and one inclusive date window. Every point carries value, date, source id, revision and source-time versus read-time dating. Omit source_id to list the instrument's audited sources. The five current-only issuer series return HISTORY_SOURCE_RESERVED with the data-use URL, never an empty gap. Shares the instrument view's three-ticker rolling-hour breadth limit.
tickerstringsource_idstringdate_fromstringdate_tostring
cheapest_settlement_chainReturns only the single cheapest chain for a USDC transfer right now, its total transaction fee in USD, the scope of that figure and how long it stays valid. Free and deliberately minimal: no per-chain table, no runner-up, no fee components and no source provenance. The paid tool compare_settlement_costs returns the full comparison with every input disclosed.
chainsstring
compare_settlement_costsMeasured USDC transfer costs on Base, Polygon, Arbitrum, Ethereum and XDC: simulated gas, current token prices, fresh chain heads and applicable rollup L1 fees. Inputs and block references accompany each figure. Cheapest first; unmeasurable chains are excluded, not estimated. Business/professional use only. Terms: https://402rates.com/data-terms/ Price: 0.01 USDC per call over x402.
chainsstring
get_rwa_yieldsRealised 30-day yields for 13 tokenized treasury funds under the Open Treasury Yield Basis. Measured rows use NAV, price or verified passive-holder balances, with observations, sources and dates. Issuer figures and differences appear where available. Quoted and unavailable rows stay explicit; free coverage lists funds and gaps. Business/professional use only. Terms: https://402rates.com/data-terms/ Price: 0.03 USDC per call over x402.
instrumentsstring
get_rwa_instrumentsComplete evidence snapshot for 13 tokenized treasury funds: yield or gap, measured size, subscription/redemption minimums, fees, settlement, access conditions, chain conflicts, quotes, URLs and dates. Same records as the free instrument view. Internal use with attribution included; continuous access, change notices and customer-facing use are separate. Business/professional use only. Terms: https://402rates.com/data-terms/ Price: 5 USDC per call over x402.
Availability history
Event log
Derived by comparing consecutive probes — changes in era, protocol version, build and reachability.
- Added to watch — era: Legacy
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