402rates MCP server

Which servers in the official MCP registry are 402rates's own, whether they answer, and what they offer. A program checked each of these, nobody copied them from a product page.

read 2026-10-24

← Back to 402rates

Whose server it is

Registry namecom.402rates/compassverified in the MCP registry

The registry name sits under 402rates.com. The registry only lets a publisher use that namespace after proving control of the domain through DNS or HTTP.

When we asked itchecked 2026-10-24

Stateanswerschecked 2026-10-24
Tools13
Server calls itself402rates-compass
Server version0.5.0
Protocol version2025-06-18

On 2026-10-24 the server answered initialize and tools/list without a sign-in. First answer in 473 ms.

Should an agent connect itNot proven either way yet

Whether its tools do the product's job has not been judged yet.
Checked on 3 of the 7 days it takes to judge reliability.

Said by rules from the measurements above. The likely first call is a model's pick from the tool list; read its description before relying on it.

Measured dailydaily checks: 3, the first on 2026-10-24

INITE MCP scoreafter a weeka score needs 7 daily checks: 3 so far
Answeredmeasuring3 of the 7 daily checks it takes to print a share
Median first answer487 ms
Space in an agent's context≈ 3,240 tokensthe definitions of all its tools (13), which an agent carries on every turn
Tool definitionsA · 99 of 100
Typed results0 of 13 toolsdeclared outputSchema: results come typed, read once

Parameters without a description: in 1 of 13

Worth a look

None of the five warning signs in these definitions.

A program checks the server once a day: initialize and tools/list, no model. Tokens are the definitions' length at about four characters a token. The grade averages six checks of every tool's name, description, schema and annotations; it says how well the tools are described, not whether they work. The score weighs what was measured and nothing else: answering (30%), doing the product's job (25%), definitions (20%), context (10%) and use (15%). A part that was not measured is left out, and a hidden instruction caps the score at 40. The state of vendors' MCP servers: method and numbers →

Tools it offers13 tools · read 2026-10-24

list_agent_test_cases
Free catalogue of versioned synthetic cases: unavailable confirmation, retry credits and attempt limits, and partial results with continuation. No run, wallet or payment.
describe_agent_test
Free description of a versioned synthetic task, its limits and coverage. Optional case selection; omitted selection describes the original confirmation case. No run, payment or wallet.
start_agent_test
Create a free bounded synthetic run without an account. An optional finalized previous run and its token link a repeat of the same case version and scenario. No real purchase. Caller model costs remain external.
execute_test_action
Execute the selected case's action: synthetic order, retry attempt, page retrieval or result submission. Identical keys and input replay the stored outcome. Calls, effects and simulated credits remain observable. No real payment.
inspect_test_state
Read operation records for a synthetic task. Observation timestamps and state describe the test service only. No claim about client receipt or overall agent reliability.
read_agent_test_report
Read calls, timestamps, operations and resulting state. Optional finalization freezes the run. A linked repeat includes the previous frozen report while retained. No score, certification or judgment of the agent.
decode_payment_attribution
Free local decoding of an ERC-8021 schema-2 x402 builder-code suffix from supplied calldata. Separates application, facilitator, services and facilitator-reported metadata. No transaction lookup, receipt confirmation, identity…
compare_payment_terms
Free comparison of two unsigned captures for the same resource and method. Default analysis version 1 retains Exact EVM; version 2 compares documented Exact, Upto, Batch Settlement and Auth-Capture fields, limits and lifecycle terms…
check_payment_terms
Free inspection of unsigned x402 terms. Default analysis version 1 retains Exact EVM checks; analysis_version 2 inspects documented EVM Exact, Upto, Batch Settlement and Auth-Capture profiles, declared limits and lifecycle fields. Unknown…
list_capabilities
Free capability and MCP tool catalogue for Compass by 402rates. Contains this product and shared service information only.
find_x402_resource
Searches the x402 resource catalogue and returns matching paid endpoints with their price, the chains they accept, and their 30-day usage from the catalogue's own counters: total calls, distinct paying addresses, the ratio between the…
get_manifest
Free OpenAPI manifest for Compass by 402rates. Contains this product and shared service information only.
test_payment
Payment integration check for 0.001 USDC; no external data lookup. Returns time, rail, network mode and free/paid capabilities. HTTP payment options can include Base, Polygon, Arbitrum and XDC; the challenge lists currently available…

How to connect

Add the server to your MCP client config. Claude Desktop, Cursor and most other clients read this shape:

{
  "mcpServers": {
    "compass": {
      "type": "http",
      "url": "https://api.402rates.com/mcp/compass"
    }
  }
}

Add it

Claude Code, in a terminal

claude mcp add --transport http 402rates https://api.402rates.com/mcp/compass

Add to Cursor Add to VS Code

claude.ai, ChatGPT and other clients: add https://api.402rates.com/mcp/compass as a custom connector in the settings.

Other servers listed as 402rates's

com.402rates/ratesanswers, 13 toolsverified in the MCP registry

Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.