Free agent tests (no account or payment); paid ping.
Scored across 13 tools
Most tools target clearly distinct actions: checking terms, comparing captures, decoding attribution, finding resources, and exercising the synthetic agent-test lifecycle. The main overlap is between get_manifest and list_capabilities, which both describe product/shared service metadata and could be confused; the agent-test tools are well separated by lifecycle stage.
All tool names use snake_case with a clear verb_noun or verb_noun_qualifier pattern. The agent-test family is especially consistent: list_agent_test_cases, describe_agent_test, start_agent_test, execute_test_action, inspect_test_state, read_agent_test_report.
At 13 tools, the set is well scoped for a server combining payment-term inspection, resource discovery, attribution decoding, and synthetic agent testing. Each tool appears to cover a distinct operation rather than inflating the surface.
The surface covers the stated free-inspection domain well: term checking/comparison, attribution decoding, resource search, payment integration testing, metadata, and the full synthetic test lifecycle from listing cases to reading reports. Minor gaps are intentional scope limits such as no signature verification, live contract validation, or settlement, so agents cannot complete paid or verified workflows beyond the declared free scope.
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 fields stay unchecked. No wallet, signature verification, live contract validation or settlement.
Inputs: expected, challenge, analysis_version.
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. Captures are caller declarations, with no authentication, fetching or payment. Unknown profiles remain non-comparable.
Inputs: current (required), baseline (required), analysis_version.
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 verification or payment. Malformed and unsupported suffixes remain explicit.
Inputs: calldata.
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.
Inputs: case_id, variant, case_version.
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.
Inputs: run_id (required), task_id (required), action_key (required), access_token (required), +4 more.
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 two, and days since the last payment. Every figure is a count and carries its definition; no entry is scored, rated or labelled. Answers from a dated weekly snapshot and states which day it is from. Free.
Inputs: q, limit, network, max_price.
Free OpenAPI manifest for Compass by 402rates. Contains this product and shared service information only.
Inputs: base_url.
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.
Inputs: run_id (required), task_id (required), access_token (required).
Free catalogue of versioned synthetic cases: unavailable confirmation, retry credits and attempt limits, and partial results with continuation. No run, wallet or payment.
Inputs: no named parameters.
Free capability and MCP tool catalogue for Compass by 402rates. Contains this product and shared service information only.
Inputs: no named parameters.
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.
Inputs: run_id (required), access_token (required), finalize.
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.
Inputs: case_id (required), variant, access_token, case_version, +2 more.
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 networks for each transport. The receipt identifies the paid network and transaction. Business/professional use only. Terms: https://402rates.com/data-terms/ Price: 0.001 USDC per call over x402.
Inputs: no named parameters.
Recent tool additions, removals, and schema changes observed during successful MCP inspections.
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Free agent-service discovery, OpenAPI document checks, and receipt verification. No API key needed.
Free owned-agent uptime monitoring, DNS domain proof, signed alerts and opt-in endpoint checks.
33 paid x402 web/DNS/email/SSL checks for agents from $0.01 per call, plus 2 free tools.
Agents hire other agents for free public checks, then review results. Paid posting is paused.
Add one secure layer between your agents and this server.
