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io.apis/apis-io
io.apis/apis-io in the official MCP registry.
Endpoint https://apis.io/mcp. Source: github.com/api-search/apis-io-aws.
The registry describes it as: Discover, rate and compare APIs and providers in the APIs.io catalog; manage a listing you own.
We read its 142 tools on 2026-10-25. Nothing in them matched our tool-poisoning rules. It also sets server instructions, text a client puts in front of the model on connect; those were read too.
A clean read means these rules found nothing, not that the server is harmless. A server can change its tools at any time, which is why the index reads it again every week.
Tools it advertises
apis_io_search get_prices get_playground_apis find_apis get_api find_providers get_provider find_tags get_tag find_industries get_industry find_estates get_estate get_provider_estate find_regions get_region find_countries get_country find_areas get_area find_regulations get_regulation find_extensions get_extension find_ratings get_provider_rating find_cohorts get_cohort find_tag_groups get_tag_group tag_group_tags cohort_stats cohort_rankings cohort_scores find_operations deprecated_operations cohort_history cohort_failures cohort_capabilities compare_cohorts get_provider_operations get_provider_tools get_provider_schema get_provider_facets get_agent_readiness find_agent_readiness agent_readiness_dimensions find_capabilities get_capability get_capability_edges get_provider_business_capabilities get_provider_capabilities get_provider_evidence get_rating_rubric find_artifacts compare_providers gap_analysis whats_changed recommend_stack get_provider_apis and 82 more
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The badge reflects the latest weekly read: 
[](https://lazaretto.dev/mcp-registry/io-apis-apis-io)How this was checked
Lazaretto connects to the endpoint the way any MCP client does, asks the server to introduce itself and list its tools, and reads every name, description, parameter schema and server instruction for tool poisoning: hidden directive blocks, orders to read local secrets, parameters built to carry secrets or the conversation out, orders that redirect another server's tools, and invisible characters. It never calls a tool. What we found across the registry.
To run the same check every time Claude Code adds a server, install the free lazaretto-guard plugin. Browse every server in the index.