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Rhumb MCP

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Agent-native tool intelligence — discover, score, and compare 600+ APIs across 16 MCP tools. Zero-signup discovery, AN Score methodology, failure mode data, and managed execution.

Install
How to run this server
[ { "cmd": "npx -y --package", "imports": [] } ]
server path: rhumb-mcp
Tools
What this server exposes
find_services
Search indexed Services by what you need them to do
get_score
Get the full AN Score breakdown for a Service: execution quality, access readiness, autonomy level, tier label, and freshness
get_alternatives
Find alternative Services, ranked by AN Score
get_failure_modes
Get known failure patterns, impact severity, and workarounds for a service
discover_capabilities
Browse Capabilities by domain or search text
resolve_capability
Given a Capability ID, and optionally a credential mode, returns ranked providers with health status, cost per call, auth methods, endpoint patterns, execute guidance, and machine-readable recovery fields like recovery_hint.resolve_url, recovery_hint.credential_modes_url, and, when applicable, recovery_hint.alternate_execute_hint or recovery_hint.setup_handoff, plus typo recovery when the capability ID is wrong
execute_capability
Call a Capability through Rhumb Resolve
estimate_capability
Estimate the active execution rail, cost, and health before a Capability call; anonymous direct system-of-record paths also preserve machine-readable execute_readiness handoffs
credential_ceremony
Get step-by-step instructions to obtain API credentials for a Service
check_credentials
Inspect live credential-mode readiness, globally or for a specific Capability
rhumb_list_recipes
List the current published Rhumb Layer 3 recipe catalog
rhumb_get_recipe
Get the full published definition for a Rhumb recipe, including input/output schemas and step topology
rhumb_recipe_execute
Execute a published Rhumb Layer 3 recipe once one is live in the public catalog
get_receipt
Retrieve an execution receipt by ID
budget
Check or set your call spending limit
spend
Get your spending breakdown for a billing period: total USD spent, call count, average cost per call, broken down by Capability and by provider
check_balance
Check your current Rhumb credit balance in USD
get_payment_url
Get a checkout URL to add credits to your Rhumb balance
get_ledger
Get your billing history: charges (debits), top-ups (credits), and auto-reload events
routing
Get or set how Rhumb auto-selects providers when you don't specify one in execute_capability
usage_telemetry
Get your execution analytics — calls, latency, errors, costs, and provider health for your Rhumb usage
Configuration
Environment & auth
authnone
envRHUMB_API_KEY
Resources
Rhumb MCP — MCP Server · libregistry