Apis Io

START HERE. Federated overview of the APIs.io catalog for a query: the top matching APIs, providers, AND tags in one call, each with its total match count. Filter by tags, artifact types, industry, region, rating band. `limit` is per section. To page/sort the full list of ONE type, use find_apis / f

Paginated, sortable list of APIs across providers — filter by tag, provider, artifact type, industry, region, or rating band. Use apis_io_search first for a cross-type overview.

Full detail for one API by aid (provider:api-slug); set include=["content"] to inline artifact bodies.

Paginated, sortable list of providers — filter by text, tag, artifact type, industry, region, rating band, or access model (pricing/onboarding/try_now/public). Use apis_io_search first for a cross-type overview.

Full detail for one provider: profile, rating, and the APIs it publishes. The heavy `collections` and `common` sections are omitted by default (their counts are still reported) — pass view=full for the whole document, or fields=["common"] for a section. Narrow for cheap reads: fields=["score"] retur

Paginated, sortable list of tags in the taxonomy. Use apis_io_search first for a cross-type overview.

One tag: its metadata, neighbor tags, and a top sample of its providers and APIs (with totals). Use find_apis?tags=slug / find_providers?tags=slug for the full ranked list, or view=full here.

Browse industry verticals; sort by provider/API count.

One industry: metadata + a top sample of its member providers (ranked, with the total). Use find_providers?industry=slug for the full list, or view=full here.

Browse geographic regions; sort by provider/API count.

One region: metadata + a top sample of its member providers (ranked, with the total). Use find_providers?region=slug for the full list, or view=full here.

Browse the API Evangelist areas taxonomy (authentication, webhooks, payments, …) — curated, scored provider indexes. Search by text; sort by provider count.

One area: metadata, its dedicated site link, and a top sample of member providers (with the total). Use find_providers?area=slug for the full list, or view=full here.

Ranked ratings leaderboard — filter by band, score range, trend, or facet threshold. Sort by composite (default), delta (biggest gainers), or any quality facet (governance, security, …) to rank providers by that dimension.

One provider's full rating breakdown (composite, band, trend, six facets).

The rubric — bands, facet weights, trend thresholds — so an agent can interpret any score.

Find artifacts of ANY one type across the catalog — the cross-type entry point. Each type also has a dedicated find_<type> tool (find_mcp, find_rules, find_scopes, …) with sorts and filters unique to that type; prefer those when you know the type. Types: mcp, skills, rules, arazzo, plans, rate-limit

PRO — Compare 2+ providers side by side: composite/band, per-facet leaders, and an artifact-coverage matrix.

PRO — For each provider: high-value artifacts it lacks (MCP, Arazzo, Rules, Skills…), what its peers commonly publish but it lacks, and its score vs the peer median — plus stack-level gaps across the set.

PRO — What changed in the catalog since a date: providers added/updated, plus rating movement (up/down) from the latest scoring build.

Design an API stack — the best-rated catalog provider per capability, assembled into a stack. FREE preview = the top pick per capability; PRO = alternatives, per-pick artifact gaps, and an exportable APIs.json + Arazzo hint. Decompose the domain into capabilities first, then pass them here.

Every artifact a provider publishes — provider-level (MCP, security, scopes, rules, agentic-access) and per-API (OpenAPI, Arazzo, overlays, reference docs) — grouped by type with counts. by_type_counts is the full summary; pass `type` (e.g. OpenAPI, MCP) to scope the artifacts list to one type, sinc

One API's artifacts grouped by type (by_type_counts is the full summary); pass `type` to scope the list to one type (synonym-aware: MCP matches MCPServer), include=["content"] to inline the bodies.

An API's primary OpenAPI reference (url) — the top agent intent; set include=["content"] to inline the spec body.

A getting-started view for a provider — website, portal, signup, docs, authentication, base URLs, and first steps assembled from its registered links.

Providers similar to a given one (alternatives) by shared tags, industry, region, and artifact coverage.

APIs similar to a given one ("more like this") by shared tags.

PRO — Top-rated providers in an industry vertical.

PRO — Top-rated providers in a region.

PRO — Top-rated providers in a curated API Evangelist area.

PRO — A provider's rating movement: current score/band/trend and the implied previous-build point.

PRO — The biggest rating movers (up and down) since the previous scoring build.

OWNER — The weekly "what's worth writing" rollup: ranked story leads from the demand map crossed with rating movement — unmet demand (searched, no result), risers/fallers, and hot-but-thin capabilities. Each lead is a headline, its signal, and a suggested angle. include=["raw"] appends the underlyin

BUSINESS/license tier — the WHOLE dataset in one pull (not a 100-row page): `ratings` (every rated provider with facets, trend, rubric + provenance) or `providers` (the catalog with coverage + score). For media outlets and analysts licensing the data to publish rankings and trends. Attribute to apis

PRO — Valuable artifact types (MCP, Arazzo, Rules, Skills…) commonly missing across a whole industry — where the vertical is under-served.

PRO — Export a designed capability stack as an adoptable APIs.json document (with an Arazzo hint) the team can commit.

Browse profiled companies (Fortune 1000) by name; ranked by overall technology-readiness signal. Free discovery.

Cross-section ranking of the 40 tracked investment dimensions (AI, cloud, governance, security, …) by how many profiled companies show signal. Free.

Services, tools, or standards ranked by how many companies adopt them across the profiled set. Free.

Full demand-side profile for one company: 40-dimension readiness scores, adopted stack, and per-quarter history. Pro.

A company's weakest investment dimensions — where it is thin and a vendor could sell in. Pro.

The supply↔demand join: apis.io providers whose product appears in a company's adopted stack, ranked by rating. Pro.

Find venture-capital firms by name, thesis tags, or category. Each carries a network-matched, rated portfolio graph. Sort by portfolio_on_network (default), portfolio_total, portfolio_rating, or name. Free.

One VC firm: identity, fund facts, and portfolio summary (totals, band distribution, average rating). Pass view=full to inline the whole portfolio. Free.

A VC firm's portfolio companies, each matched to the network and rated. Filter is_provider=true (only API providers), in_network=true, band, or min_score; sort by score (default), api_count, or name. The demand-side view of who a fund has backed. Free.

The reverse portfolio edge — which VC firms in the network back a given provider/company (by slug). Free.

Resolve ANY identifier — website URL, domain (stripe.com), or GitHub org (github.com/stripe) — to the apis.io provider it belongs to. Use this when you have a URL, not a slug. Free.

One call, pick your field groups — resolves a slug OR any identifier and returns exactly the groups you ask for, instead of chaining get_provider + get_provider_rating + get_provider_artifacts + get_provider_onboarding. Groups: profile, onboarding, artifacts (free); rating, insights (Pro). Free base

PRO — Persist the current search criteria as a named saved search you own, so you can re-run it and get net-new results later. Criteria use the same filters as apis_io_search. Requires an apis.io API key.

PRO — List the saved searches you own (name, criteria, when last run, how many matches are tracked).

PRO — Re-run one of your saved searches against the live catalog and return current matching providers.

PRO — What is NEW for a saved search since you last checked: providers that newly match your criteria. Advances the delta cursor, so each call reports only what changed since the previous call. The agent-native version of the demand report.

PRO — Delete a saved search you own.

PRO — Create a named, persistent list (a shortlist / stack you own) of providers or APIs. Requires an apis.io API key.

PRO — List the lists/shortlists you own.

PRO — Get a list you own, with each member resolved to its current name, band, and score.

PRO — Add providers/APIs (by slug or aid) to one of your lists.

PRO — Delete a list you own.

OpenAPI specifications across the catalog. The REST contract. get_openapi returns one API's primary spec with optional inlined body. Filter by q / tags / providers; include=["content"] inlines bodies. Use find_artifacts for cross-type search.

AsyncAPI (event-driven) specifications across the catalog. Event/streaming APIs. Filter by q / tags / providers; include=["content"] inlines bodies. Use find_artifacts for cross-type search.

AsyncAPI event channels across the catalog. Individual event channels (topics/streams). Filter by q / tags / providers; include=["content"] inlines bodies. Use find_artifacts for cross-type search.

GraphQL schemas across the catalog. GraphQL type systems. Filter by q / tags / providers; include=["content"] inlines bodies. Use find_artifacts for cross-type search.

Arazzo workflows across the catalog. Multi-step API workflows chaining operations. Filter by q / tags / providers; include=["content"] inlines bodies. Use find_artifacts for cross-type search.

MCP servers across the catalog. Model Context Protocol servers a provider offers to agents. Filter by q / tags / providers; include=["content"] inlines bodies. Use find_artifacts for cross-type search.

Agent Skills across the catalog. Packaged agent skills. Filter by q / tags / providers; include=["content"] inlines bodies. Use find_artifacts for cross-type search.

Spectral governance rulesets across the catalog. API design/linting rulesets. Filter by q / tags / providers; include=["content"] inlines bodies. Use find_artifacts for cross-type search.

OAuth scope catalogs across the catalog. The OAuth scopes an API defines. Pro tier. Filter by q / tags / providers; include=["content"] inlines bodies. Use find_artifacts for cross-type search.

Security artifacts across the catalog. Authentication, domain security, VDP, trust center. Pro tier. Filter by q / tags / providers; include=["content"] inlines bodies. Use find_artifacts for cross-type search.

Pricing plans across the catalog. An API's pricing tiers. Filter by q / tags / providers; include=["content"] inlines bodies. Use find_artifacts for cross-type search.

Rate-limit policies across the catalog. Declared throttling policies. Filter by q / tags / providers; include=["content"] inlines bodies. Use find_artifacts for cross-type search.

FinOps / billing models across the catalog. How usage is metered and billed. Filter by q / tags / providers; include=["content"] inlines bodies. Use find_artifacts for cross-type search.

Postman / Open collections across the catalog. Runnable request collections. Filter by q / tags / providers; include=["content"] inlines bodies. Use find_artifacts for cross-type search.

JSON-LD contexts across the catalog. Linked-data vocabularies. Filter by q / tags / providers; include=["content"] inlines bodies. Use find_artifacts for cross-type search.

JSON Schemas across the catalog. Standalone data schemas. Filter by q / tags / providers; include=["content"] inlines bodies. Use find_artifacts for cross-type search.

JSON Structures across the catalog. Data structures behind an API. Filter by q / tags / providers; include=["content"] inlines bodies. Use find_artifacts for cross-type search.

Example payloads across the catalog. Real request/response examples. Filter by q / tags / providers; include=["content"] inlines bodies. Use find_artifacts for cross-type search.

Postman collections across the catalog. Postman-format collections (by reference). Filter by q / tags / providers; include=["content"] inlines bodies. Use find_artifacts for cross-type search.

API vocabularies across the catalog. Controlled vocabularies a provider publishes. Filter by q / tags / providers; include=["content"] inlines bodies. Use find_artifacts for cross-type search.

APIs.json indexes across the catalog. The APIs.json discovery documents themselves. Filter by q / tags / providers; include=["content"] inlines bodies. Use find_artifacts for cross-type search.