thirdweb

thirdweb is a full-stack web3 development platform. Its HTTP APIs unify wallet management, transaction execution, smart contract read/write, token and NFT operations, fiat-to-crypto payments and bridging, indexed on-chain data, and an AI blockchain interface across thousands of EVM chains and Solana, authenticated with a client ID or secret key.

thirdweb publishes 9 APIs on the APIs.io network, including Authentication API, Contracts API, Engine API, and 6 more. Tagged areas include Web3, Blockchain, Wallets, Smart Contracts, and Payments.

thirdweb’s developer surface includes authentication, engineering blog, documentation, and 8 more developer resources.

🌐 Visit website 📡 Source on GitHub

35.2/100 thin ▬ flat Agent 26/100 agent aware saas Full breakdown ↓
scored 2026-09-14 · rubric v0.22.0

AccessFreemiumSelf serve⚡ Free to try

1 APIs

Web3 Blockchain Wallets Smart Contracts Payments Indexer

Kin Score

Kin Score How this is scored →
scored 2026-09-14 · rubric v0.22.0

Composite quality — 35.2/100 · thin

Contract Quality 9.3 / 19

Developer Ergonomics 4.8 / 15

Access Clarity 5.9 / 15

Operational Transparency 3.3 / 10

Contract Governance 0.0 / 9

Discoverability 5.1 / 8

Regulatory Posture 2.8 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 26/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Regulatory Posture applies to this provider. Its tags matched the Payments regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/thirdweb: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 9

Individual APIs this provider publishes, each with its own machine-readable definition.

thirdweb Authentication API

Wallet authentication flows.

thirdweb Contracts API

Smart contract read, write, and deployment.

thirdweb Engine API

Backend transaction execution with server wallets.

thirdweb Insight API

Indexed on-chain events, transactions, tokens, and NFTs.

thirdweb Nebula API

AI blockchain interface.

thirdweb Payments API

Bridge, swap, convert, onramp, and x402 payments.

thirdweb Tokens API

Token creation, listing, and ownership.

thirdweb Transactions API

Transaction submission and status.

thirdweb Wallets API

User and server wallet management, signing, and transfers.

Scroll for all 9

Open Collections 11

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

API Collection

OPEN COLLECTION

thirdweb Authentication API

OPEN COLLECTION

thirdweb Authentication Contracts API

OPEN COLLECTION

thirdweb Authentication Engine API

OPEN COLLECTION

thirdweb Authentication Insight API

OPEN COLLECTION

thirdweb Authentication Nebula API

OPEN COLLECTION

thirdweb Authentication Payments API

OPEN COLLECTION

thirdweb Authentication Tokens API

OPEN COLLECTION

thirdweb Authentication Transactions API

OPEN COLLECTION

thirdweb Authentication Wallets API

OPEN COLLECTION

thirdweb API

OPEN COLLECTION

Scroll for all 11

Pricing Plans 1

Published pricing tiers and plan structures.

Thirdweb Plans Pricing

5 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Thirdweb Rate Limits

6 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Thirdweb Finops

FINOPS

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Thirdweb Authentication

apiKey/http · 4 schemes

SECURITY

Thirdweb Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Thirdweb Agentic Access

42 operations · 23 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

Company 3

The organization behind the API

Blog

Blog

LinkedIn

Website

Website

Source (apis.yml)

aid: thirdweb
url: https://raw.githubusercontent.com/api-evangelist/thirdweb/refs/heads/main/apis.yml
name: thirdweb
kind: company
description: thirdweb is a full-stack web3 development platform. Its HTTP APIs unify wallet management, transaction execution,
  smart contract read/write, token and NFT operations, fiat-to-crypto payments and bridging, indexed on-chain data, and an
  AI blockchain interface across thousands of EVM chains and Solana, authenticated with a client ID or secret key.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/thirdweb.png
tags:
- Web3
- Blockchain
- Wallets
- Smart Contracts
- Payments
- Indexer
created: '2026-06-20'
modified: '2026-06-20'
specificationVersion: '0.23'
apis:
- aid: thirdweb:thirdweb-authentication-api
  name: thirdweb Authentication API
  description: Wallet authentication flows.
  humanURL: https://portal.thirdweb.com/reference
  baseURL: https://api.thirdweb.com
  tags:
  - Authentication
  properties:
  - type: OpenAPI
    url: openapi/thirdweb-authentication-api-openapi.yml
  - type: Documentation
    url: https://portal.thirdweb.com/reference
  - type: APIReference
    url: https://portal.thirdweb.com/reference
  - type: PostmanCollection
    url: collections/thirdweb.postman_collection.json
  - type: OpenCollection
    url: collections/thirdweb.opencollection.json
  - type: Documentation
    url: https://portal.thirdweb.com/engine
  - type: APIReference
    url: https://engine.thirdweb.com/reference
  - type: Documentation
    url: https://portal.thirdweb.com/insight
  - type: APIReference
    url: https://insight.thirdweb.com/reference
  - type: Documentation
    url: https://portal.thirdweb.com/nebula
  - type: APIReference
    url: https://nebula-api.thirdweb.com/reference
  - type: Documentation
    url: https://portal.thirdweb.com/payments
  - type: APIReference
    url: https://playground.thirdweb.com/payments/backend
  - type: Documentation
    url: https://portal.thirdweb.com/infrastructure/rpc-edge/overview
- aid: thirdweb:thirdweb-contracts-api
  name: thirdweb Contracts API
  description: Smart contract read, write, and deployment.
  humanURL: https://portal.thirdweb.com/reference
  baseURL: https://api.thirdweb.com
  tags:
  - Contracts
  properties:
  - type: OpenAPI
    url: openapi/thirdweb-contracts-api-openapi.yml
  - type: Documentation
    url: https://portal.thirdweb.com/reference
  - type: APIReference
    url: https://portal.thirdweb.com/reference
  - type: PostmanCollection
    url: collections/thirdweb.postman_collection.json
  - type: OpenCollection
    url: collections/thirdweb.opencollection.json
  - type: Documentation
    url: https://portal.thirdweb.com/engine
  - type: APIReference
    url: https://engine.thirdweb.com/reference
  - type: Documentation
    url: https://portal.thirdweb.com/insight
  - type: APIReference
    url: https://insight.thirdweb.com/reference
  - type: Documentation
    url: https://portal.thirdweb.com/nebula
  - type: APIReference
    url: https://nebula-api.thirdweb.com/reference
  - type: Documentation
    url: https://portal.thirdweb.com/payments
  - type: APIReference
    url: https://playground.thirdweb.com/payments/backend
  - type: Documentation
    url: https://portal.thirdweb.com/infrastructure/rpc-edge/overview
- aid: thirdweb:thirdweb-engine-api
  name: thirdweb Engine API
  description: Backend transaction execution with server wallets.
  humanURL: https://portal.thirdweb.com/reference
  baseURL: https://api.thirdweb.com
  tags:
  - Engine
  properties:
  - type: OpenAPI
    url: openapi/thirdweb-engine-api-openapi.yml
  - type: Documentation
    url: https://portal.thirdweb.com/reference
  - type: APIReference
    url: https://portal.thirdweb.com/reference
  - type: PostmanCollection
    url: collections/thirdweb.postman_collection.json
  - type: OpenCollection
    url: collections/thirdweb.opencollection.json
  - type: Documentation
    url: https://portal.thirdweb.com/engine
  - type: APIReference
    url: https://engine.thirdweb.com/reference
  - type: Documentation
    url: https://portal.thirdweb.com/insight
  - type: APIReference
    url: https://insight.thirdweb.com/reference
  - type: Documentation
    url: https://portal.thirdweb.com/nebula
  - type: APIReference
    url: https://nebula-api.thirdweb.com/reference
  - type: Documentation
    url: https://portal.thirdweb.com/payments
  - type: APIReference
    url: https://playground.thirdweb.com/payments/backend
  - type: Documentation
    url: https://portal.thirdweb.com/infrastructure/rpc-edge/overview
- aid: thirdweb:thirdweb-insight-api
  name: thirdweb Insight API
  description: Indexed on-chain events, transactions, tokens, and NFTs.
  humanURL: https://portal.thirdweb.com/reference
  baseURL: https://api.thirdweb.com
  tags:
  - Insight
  properties:
  - type: OpenAPI
    url: openapi/thirdweb-insight-api-openapi.yml
  - type: Documentation
    url: https://portal.thirdweb.com/reference
  - type: APIReference
    url: https://portal.thirdweb.com/reference
  - type: PostmanCollection
    url: collections/thirdweb.postman_collection.json
  - type: OpenCollection
    url: collections/thirdweb.opencollection.json
  - type: Documentation
    url: https://portal.thirdweb.com/engine
  - type: APIReference
    url: https://engine.thirdweb.com/reference
  - type: Documentation
    url: https://portal.thirdweb.com/insight
  - type: APIReference
    url: https://insight.thirdweb.com/reference
  - type: Documentation
    url: https://portal.thirdweb.com/nebula
  - type: APIReference
    url: https://nebula-api.thirdweb.com/reference
  - type: Documentation
    url: https://portal.thirdweb.com/payments
  - type: APIReference
    url: https://playground.thirdweb.com/payments/backend
  - type: Documentation
    url: https://portal.thirdweb.com/infrastructure/rpc-edge/overview
- aid: thirdweb:thirdweb-nebula-api
  name: thirdweb Nebula API
  description: AI blockchain interface.
  humanURL: https://portal.thirdweb.com/reference
  baseURL: https://api.thirdweb.com
  tags:
  - Nebula
  properties:
  - type: OpenAPI
    url: openapi/thirdweb-nebula-api-openapi.yml
  - type: Documentation
    url: https://portal.thirdweb.com/reference
  - type: APIReference
    url: https://portal.thirdweb.com/reference
  - type: PostmanCollection
    url: collections/thirdweb.postman_collection.json
  - type: OpenCollection
    url: collections/thirdweb.opencollection.json
  - type: Documentation
    url: https://portal.thirdweb.com/engine
  - type: APIReference
    url: https://engine.thirdweb.com/reference
  - type: Documentation
    url: https://portal.thirdweb.com/insight
  - type: APIReference
    url: https://insight.thirdweb.com/reference
  - type: Documentation
    url: https://portal.thirdweb.com/nebula
  - type: APIReference
    url: https://nebula-api.thirdweb.com/reference
  - type: Documentation
    url: https://portal.thirdweb.com/payments
  - type: APIReference
    url: https://playground.thirdweb.com/payments/backend
  - type: Documentation
    url: https://portal.thirdweb.com/infrastructure/rpc-edge/overview
- aid: thirdweb:thirdweb-payments-api
  name: thirdweb Payments API
  description: Bridge, swap, convert, onramp, and x402 payments.
  humanURL: https://portal.thirdweb.com/reference
  baseURL: https://api.thirdweb.com
  tags:
  - Payments
  properties:
  - type: OpenAPI
    url: openapi/thirdweb-payments-api-openapi.yml
  - type: Documentation
    url: https://portal.thirdweb.com/reference
  - type: APIReference
    url: https://portal.thirdweb.com/reference
  - type: PostmanCollection
    url: collections/thirdweb.postman_collection.json
  - type: OpenCollection
    url: collections/thirdweb.opencollection.json
  - type: Documentation
    url: https://portal.thirdweb.com/engine
  - type: APIReference
    url: https://engine.thirdweb.com/reference
  - type: Documentation
    url: https://portal.thirdweb.com/insight
  - type: APIReference
    url: https://insight.thirdweb.com/reference
  - type: Documentation
    url: https://portal.thirdweb.com/nebula
  - type: APIReference
    url: https://nebula-api.thirdweb.com/reference
  - type: Documentation
    url: https://portal.thirdweb.com/payments
  - type: APIReference
    url: https://playground.thirdweb.com/payments/backend
  - type: Documentation
    url: https://portal.thirdweb.com/infrastructure/rpc-edge/overview
- aid: thirdweb:thirdweb-tokens-api
  name: thirdweb Tokens API
  description: Token creation, listing, and ownership.
  humanURL: https://portal.thirdweb.com/reference
  baseURL: https://api.thirdweb.com
  tags:
  - Tokens
  properties:
  - type: OpenAPI
    url: openapi/thirdweb-tokens-api-openapi.yml
  - type: Documentation
    url: https://portal.thirdweb.com/reference
  - type: APIReference
    url: https://portal.thirdweb.com/reference
  - type: PostmanCollection
    url: collections/thirdweb.postman_collection.json
  - type: OpenCollection
    url: collections/thirdweb.opencollection.json
  - type: Documentation
    url: https://portal.thirdweb.com/engine
  - type: APIReference
    url: https://engine.thirdweb.com/reference
  - type: Documentation
    url: https://portal.thirdweb.com/insight
  - type: APIReference
    url: https://insight.thirdweb.com/reference
  - type: Documentation
    url: https://portal.thirdweb.com/nebula
  - type: APIReference
    url: https://nebula-api.thirdweb.com/reference
  - type: Documentation
    url: https://portal.thirdweb.com/payments
  - type: APIReference
    url: https://playground.thirdweb.com/payments/backend
  - type: Documentation
    url: https://portal.thirdweb.com/infrastructure/rpc-edge/overview
- aid: thirdweb:thirdweb-transactions-api
  name: thirdweb Transactions API
  description: Transaction submission and status.
  humanURL: https://portal.thirdweb.com/reference
  baseURL: https://api.thirdweb.com
  tags:
  - Transaction
  tags_raw:
  - Transactions
  properties:
  - type: OpenAPI
    url: openapi/thirdweb-transactions-api-openapi.yml
  - type: Documentation
    url: https://portal.thirdweb.com/reference
  - type: APIReference
    url: https://portal.thirdweb.com/reference
  - type: PostmanCollection
    url: collections/thirdweb.postman_collection.json
  - type: OpenCollection
    url: collections/thirdweb.opencollection.json
  - type: Documentation
    url: https://portal.thirdweb.com/engine
  - type: APIReference
    url: https://engine.thirdweb.com/reference
  - type: Documentation
    url: https://portal.thirdweb.com/insight
  - type: APIReference
    url: https://insight.thirdweb.com/reference
  - type: Documentation
    url: https://portal.thirdweb.com/nebula
  - type: APIReference
    url: https://nebula-api.thirdweb.com/reference
  - type: Documentation
    url: https://portal.thirdweb.com/payments
  - type: APIReference
    url: https://playground.thirdweb.com/payments/backend
  - type: Documentation
    url: https://portal.thirdweb.com/infrastructure/rpc-edge/overview
- aid: thirdweb:thirdweb-wallets-api
  name: thirdweb Wallets API
  description: User and server wallet management, signing, and transfers.
  humanURL: https://portal.thirdweb.com/reference
  baseURL: https://api.thirdweb.com
  tags:
  - Wallets
  properties:
  - type: OpenAPI
    url: openapi/thirdweb-wallets-api-openapi.yml
  - type: Documentation
    url: https://portal.thirdweb.com/reference
  - type: APIReference
    url: https://portal.thirdweb.com/reference
  - type: PostmanCollection
    url: collections/thirdweb.postman_collection.json
  - type: OpenCollection
    url: collections/thirdweb.opencollection.json
  - type: Documentation
    url: https://portal.thirdweb.com/engine
  - type: APIReference
    url: https://engine.thirdweb.com/reference
  - type: Documentation
    url: https://portal.thirdweb.com/insight
  - type: APIReference
    url: https://insight.thirdweb.com/reference
  - type: Documentation
    url: https://portal.thirdweb.com/nebula
  - type: APIReference
    url: https://nebula-api.thirdweb.com/reference
  - type: Documentation
    url: https://portal.thirdweb.com/payments
  - type: APIReference
    url: https://playground.thirdweb.com/payments/backend
  - type: Documentation
    url: https://portal.thirdweb.com/infrastructure/rpc-edge/overview
common:
- type: AgenticAccess
  url: agentic-access/thirdweb-agentic-access.yml
- type: DomainSecurity
  url: security/thirdweb-domain-security.yml
- type: Authentication
  url: authentication/thirdweb-authentication.yml
- url: https://blog.thirdweb.com/feed
  type: Blog
- type: GitHubOrganization
  url: https://github.com/thirdweb-dev
- type: LinkedIn
  url: https://www.linkedin.com/company/third-web
- type: Website
  url: https://thirdweb.com
- type: Documentation
  url: https://portal.thirdweb.com
- type: Plans
  url: plans/thirdweb-plans-pricing.yml
- type: RateLimits
  url: rate-limits/thirdweb-rate-limits.yml
- type: FinOps
  url: finops/thirdweb-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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