Airstack
Airstack is a Web3 data aggregation platform providing GraphQL and REST APIs for querying on-chain and off-chain data across multiple blockchains. Developers can query NFT ownership, token balances, wallet identities, ENS names, POAP badges, and cross-chain data in a single composable request. The platform indexes Ethereum, Polygon, Base, and other EVM-compatible chains, enabling complex cross-project queries without running your own infrastructure.
Limited machine-readable signal and partial portal coverage — documentation a human can read, but little a machine or agent can consume without scraping.
API Evangelist profiles Airstack the way a machine reads it — 34 machine-readable artifacts across 2 APIs, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — Airstack scores 29.1/100 (thin), with a separate agent-readiness read of 22/100 (agent aware). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance. Every facet and dimension name is a link: it opens that measurement's page on APIs.io, where the rating runs across the whole catalog — the exact checks that feed it, how every profiled provider distributes on it, and who is at the top of it.
Kin Score
How this is scored →scored 2026-09-10 · rubric v0.20.0
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title="Airstack on API Evangelist — API profile and Kin Score">
<img src="https://apis.io/badge/airstack/card.svg"
alt="Airstack Kin Score — API readiness rating by API Evangelist" width="340" height="120" loading="lazy">
</a>More shapes, themes and sizes → · Score as JSON · How badges work
How we profile Airstack
Each block below is one kind of artifact we hold for Airstack. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.
APIs 14
Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.
Individual APIs this provider publishes, each with its own machine-readable definition.
Airstack GraphQL API
The primary Airstack API offering composable GraphQL queries across on-chain and off-chain Web3 data. Query NFT balances, token transfers, wallet identities, ENS names, POAP bad...
Airstack Casts API
The Casts API from Airstack — 4 operation(s) for casts.
Airstack FIDs API
The FIDs API from Airstack — 1 operation(s) for fids.
Airstack HubEvents API
The HubEvents API from Airstack — 2 operation(s) for hubevents.
Airstack Links API
The Links API from Airstack — 3 operation(s) for links.
Airstack OnChainEvents API
The OnChainEvents API from Airstack — 3 operation(s) for onchainevents.
Airstack Reactions API
The Reactions API from Airstack — 4 operation(s) for reactions.
Airstack Storage API
The Storage API from Airstack — 1 operation(s) for storage.
Airstack SubmitMessage API
The SubmitMessage API from Airstack — 1 operation(s) for submitmessage.
Airstack UserData API
The UserData API from Airstack — 1 operation(s) for userdata.
Airstack Usernames API
The Usernames API from Airstack — 2 operation(s) for usernames.
Airstack ValidateMessage API
The ValidateMessage API from Airstack — 1 operation(s) for validatemessage.
Airstack Verifications API
The Verifications API from Airstack — 1 operation(s) for verifications.
Airstack Webhooks API
The Webhooks API from Airstack — 3 operation(s) for webhooks.
Scroll within the panel for all 14 ·
Open Collections 14
Open, tool-agnostic collections carry the same runnable value as Postman without locking you to one client — the portable, forkable form of the same exercise.
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
API Collection
OPEN COLLECTIONFarcaster Hub REST Casts API
OPEN COLLECTIONFarcaster Hub REST Casts FIDs API
OPEN COLLECTIONFarcaster Hub REST Casts HubEvents API
OPEN COLLECTIONFarcaster Hub REST Casts Links API
OPEN COLLECTIONFarcaster Hub REST Casts OnChainEvents API
OPEN COLLECTIONFarcaster Hub REST Casts Reactions API
OPEN COLLECTIONFarcaster Hub REST Casts Storage API
OPEN COLLECTIONFarcaster Hub REST Casts SubmitMessage API
OPEN COLLECTIONFarcaster Hub REST Casts UserData API
OPEN COLLECTIONFarcaster Hub REST Casts Usernames API
OPEN COLLECTIONFarcaster Hub REST Casts ValidateMessage API
OPEN COLLECTIONFarcaster Hub REST Casts Verifications API
OPEN COLLECTIONFarcaster Hub REST Casts Webhooks API
OPEN COLLECTIONScroll within the panel for all 14 ·
GraphQL 1
Where a provider ships GraphQL, the schema is the contract. We profile it alongside the REST surface so the whole interface is legible in one place.
GraphQL schemas published by this provider.
Airstack GraphQL API
Airstack exposes a composable GraphQL API for querying on-chain and off-chain Web3 data across multiple EVM-compatible blockchains. The API aggregates token balances, NFT metada...
GRAPHQLSpectral Rules 1
Governance rulesets we run against this provider's specs — the automated checks behind parts of the score. Profiling them makes the quality bar explicit and re-runnable, not a matter of opinion.
Airstack API Rules
SPECTRALJSON Schema 1
Standalone JSON Schema definitions describe the data models behind the API. We profile them so the shapes are validatable on their own — useful long after a single request is forgotten.
Standalone JSON Schema definitions for this provider's data models.
Airstack Farcaster Hub API Schemas
JSON SCHEMASecurity Posture 2
Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Agentic Access 1
An x-agentic-access contract marks which operations are safe for an agent to run on its own and which need a human in the loop. It is the difference between an API an agent can use and one it can use safely.
Recommended x-agentic-access execution contracts for AI agents.
Resources
Every other property we hold for Airstack — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.
Documentation 1
Reference material describing how the API behaves
Agent Surfaces 1
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 2
Pagination, idempotency, versioning, errors, and events
Build 5
SDKs, sample code, and the tooling you integrate with
Access & Security 2
Authentication, authorization, and security posture
Company 2
The organization behind the API
Other 3
Properties that don't map to a standard resource type
← All providers · Data indexed from github.com/api-evangelist/airstack · machine-readable index on apis.io
This is an independent, third-party profile of Airstack, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.
The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.
Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.
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