APIs.io MCP server
142 tools · Last check that passed 27 Oct 2026, 01:50 UTC
APIs.io's own remote MCP server gives an agent search across the APIs.io catalog of public API providers, their APIs, specifications and ratings, free with no key, and analysis across the catalog on a paid plan. Once a day, Stackduke connects to it the way any MCP client would, with no account and no sign-in, and lists its tools. It never runs them.
All 142 tools
| Tool | Counted as |
|---|---|
delete_list | Deletes |
delete_saved_search | Deletes |
unwatch_listing | Deletes |
add_to_list | Changes things |
apis_io_search | Changes things |
claim_listing | Changes things |
cohort_failures | Changes things |
cohort_history | Changes things |
correct_facts | Changes things |
create_list | Changes things |
dispute_finding | Changes things |
find_agents | Changes things |
find_capabilities | Changes things |
find_cohorts | Changes things |
find_investors | Changes things |
find_openapis | Changes things |
find_overlays | Changes things |
find_tag_groups | Changes things |
generate_artifact | Changes things |
get_api | Changes things |
get_openapi | Changes things |
get_provider_facets | Changes things |
insights_adoption | Changes things |
insights_overview | Changes things |
match_providers | Changes things |
register_agent | Changes things |
report_correction | Changes things |
report_gap | Changes things |
request_check | Changes things |
run_saved_search | Changes things |
save_search | Changes things |
saved_search_net_new | Changes things |
set_visibility | Changes things |
simulate_fixes | Changes things |
story_leads | Changes things |
submit_artifact | Changes things |
submit_feedback | Changes things |
tag_group_tags | Changes things |
watch_listing | Changes things |
agent_readiness_dimensions | Said to only read |
check_status | Said to only read |
cohort_capabilities | Said to only read |
cohort_rankings | Said to only read |
cohort_scores | Said to only read |
cohort_stats | Said to only read |
company_gaps | Said to only read |
compare_cohorts | Said to only read |
compare_providers | Said to only read |
deprecated_operations | Said to only read |
enrich_provider | Said to only read |
export_dataset | Said to only read |
export_stack | Said to only read |
find_agent_readiness | Said to only read |
find_apis | Said to only read |
find_apis_json | Said to only read |
find_arazzo | Said to only read |
find_areas | Said to only read |
find_artifacts | Said to only read |
find_asyncapis | Said to only read |
find_channels | Said to only read |
find_collections | Said to only read |
find_company_insights | Said to only read |
find_countries | Said to only read |
find_estates | Said to only read |
find_examples | Said to only read |
find_extensions | Said to only read |
find_finops | Said to only read |
find_graphql | Said to only read |
find_industries | Said to only read |
find_json_ld | Said to only read |
find_json_schemas | Said to only read |
find_json_structures | Said to only read |
find_mcp | Said to only read |
find_operations | Said to only read |
find_plans | Said to only read |
find_postman | Said to only read |
find_providers | Said to only read |
find_rate_limits | Said to only read |
find_rating_movers | Said to only read |
find_ratings | Said to only read |
find_regions | Said to only read |
find_regulations | Said to only read |
find_rules | Said to only read |
find_scopes | Said to only read |
find_security | Said to only read |
find_similar_apis | Said to only read |
find_similar_providers | Said to only read |
find_skills | Said to only read |
find_tags | Said to only read |
find_vcs | Said to only read |
gap_analysis | Said to only read |
get_agent_readiness | Said to only read |
get_api_artifacts | Said to only read |
get_area | Said to only read |
get_area_leaders | Said to only read |
get_capability | Said to only read |
get_capability_edges | Said to only read |
get_cohort | Said to only read |
get_company_insight | Said to only read |
get_country | Said to only read |
get_country_leaders | Said to only read |
get_estate | Said to only read |
get_extension | Said to only read |
get_industry | Said to only read |
get_industry_leaders | Said to only read |
get_list | Said to only read |
get_playground_apis | Said to only read |
get_prices | Said to only read |
get_provider | Said to only read |
get_provider_apis | Said to only read |
get_provider_artifacts | Said to only read |
get_provider_business_capabilities | Said to only read |
get_provider_capabilities | Said to only read |
get_provider_estate | Said to only read |
get_provider_evidence | Said to only read |
get_provider_onboarding | Said to only read |
get_provider_operations | Said to only read |
get_provider_rating | Said to only read |
get_provider_schema | Said to only read |
get_provider_tools | Said to only read |
get_rating_history | Said to only read |
get_rating_rubric | Said to only read |
get_region | Said to only read |
get_region_leaders | Said to only read |
get_regulation | Said to only read |
get_tag | Said to only read |
get_tag_group | Said to only read |
get_vc | Said to only read |
industry_gap_analysis | Said to only read |
insights_dimensions | Said to only read |
insights_industries | Said to only read |
list_lists | Said to only read |
list_saved_searches | Said to only read |
list_watches | Said to only read |
my_checks | Said to only read |
my_workspace | Said to only read |
readiness_gates | Said to only read |
recommend_stack | Said to only read |
resolve | Said to only read |
vc_portfolio | Said to only read |
what_can_i_fix | Said to only read |
whats_changed | Said to only read |
The tools the server listed at the last check that passed, at its default address and settings, with no sign-in; an account that signs in, or other settings, may see other tools. What a tool is counted as doing is Stackduke's cautious reading of the server's labels, the tool's name and its description: where they disagree it takes whichever says the tool can do most, so it overcounts on purpose. It does not say the server is safe, and it does not list what a tool cannot do. Descriptions are not shown, because they are written for models and may try to steer them.
Recent checks
11 of the last 11 checks passed
A check passes when the server lists its tools. Checked at https://apis.io/mcp.
Recent changes
21 Oct 2026, 09:27 UTC, after a check on 20 Oct 2026, 09:38 UTC
Inputs or outputs changed on add_to_list, agent_readiness_dimensions, apis_io_search, check_status, claim_listing and 15 more. 142 tools changed in all.
20 Oct 2026, 09:38 UTC, after a check on 19 Oct 2026, 10:04 UTC
Can do more The server's own labels changed on add_to_list, agent_readiness_dimensions, apis_io_search, check_status, claim_listing and 15 more. Inputs or outputs changed on add_to_list, agent_readiness_dimensions, apis_io_search, check_status, claim_listing and 13 more. 142 tools changed in all. Counted as able to do more: unwatch_listing (make changes that cannot be undone), get_provider_facets (create or change things).
19 Oct 2026, 10:04 UTC, after a check on 18 Oct 2026, 06:06 UTC
Can do more 1 tool added: find_overlays. Description rewritten on compare_providers, find_estates, find_finops, find_plans, find_rate_limits and 2 more. Inputs or outputs changed on find_finops, find_plans, find_rate_limits, register_agent. Counted as able to do more: find_overlays (create or change things).
From the scan of 27 Oct 2026, 01:52 UTC. "Changed" and "Can do more" count changes from the last 30 days; older ones stay listed here. A change made and undone between two checks is not seen. Every check is in the scanner's public data.
Know when APIs.io's tools change.
One email when APIs.io's official MCP server adds, removes or changes tools, with what changed. Nothing else.
What to watch for
- Some tools write. claim_listing, correct_facts, dispute_finding, set_visibility and request_check file requests about a listing that a person works on, and save_search, create_list and add_to_list write to the caller's own workspace. APIs.io's MCP server documentation
- On the pay-as-you-go plan, paid tools are charged per call from $0.005, and the balance tops itself up from a card when it runs low. APIs.io's plans
- Provider descriptions, API specifications and other documents published by API providers come back to the agent as text, and text an agent reads can carry instructions for it. OWASP, prompt injection
How to limit it
With APIs.io's own settings, as its documentation describes them. Stackduke has not tested them.
- Connect with no key when the agent only needs the free catalog, which APIs.io says anonymous clients get: search, providers, APIs, tags, artifacts and everything about one provider. APIs.io's MCP server documentation
- On pay-as-you-go, set spend caps that fit the agent. APIs.io says the caps always bind first, and are $50 a day and $500 a month unless you set others. APIs.io's plans
What Stackduke is designed to do
Stackduke is designed to sit between your agents and their MCP servers: to check each tool call against your rules before it runs, hold the risky ones for a person to approve, and keep a record of what was decided.
It does not yet forward or block tool calls for customers. Today it reads what this server offers and publishes what changes.