Biconomy

Biconomy publishes 3 APIs on the APIs.io network: instructions API, mee API, and root API. Tagged areas include Account Abstraction, Blockchain, Bundler, Cross-Chain, and DeFi.

The Biconomy catalog on APIs.io includes 1 JSON-LD context and 2 Spectral governance rulesets.

Biconomy’s developer surface includes authentication, developer portal, documentation, engineering blog, support, and 49 more developer resources.

🌐 Visit website 📡 Source on GitHub

50.4/100 developing ▬ flat Agent 37/100 agent ready Full breakdown ↓
scored 2026-07-28 · rubric v0.6

AccessFreemiumSelf serve⚡ Free to try

8 APIs

Account AbstractionBlockchainBundlerCross-ChainDeFiERC-4337ERC-7579ERC-7702EthereumGas AbstractionGaslessMEEPaymasterSmart AccountsSmart SessionsWalletsWeb3

Kin Score

Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6

Composite quality — 50.4/100 · developing

Contract Quality 18.4 / 25

Developer Ergonomics 8.3 / 20

Commercial Clarity 5.8 / 20

Operational Transparency 4.1 / 13

Governance 8.3 / 12

Discoverability 5.6 / 10

Agent readiness — 37/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 7 / 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

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/biconomy: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 8

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

Biconomy Bundler API

Biconomy's open-source ERC-4337 TypeScript Bundler. Implements eth_sendUserOperation, eth_estimateUserOperationGas, eth_getUserOperationByHash, eth_getUserOperationReceipt, and ...

Biconomy Sponsorship Paymaster

ERC-4337 paymaster service that fronts gas on behalf of end users so dApps can offer gasless UX. Two modes — full sponsorship (developer pays gas, post-paid invoiced monthly) an...

Biconomy Nexus Smart Account

Nexus is Biconomy's ERC-7579 modular smart contract account, audited by CodeHawks-Cyfrin (Sept 2024), Spearbit (Oct/Nov 2024), Zenith (Mar 2025), and Pashov (Mar 2025), and pre-...

Biconomy Smart Sessions API

Smart Sessions is a delegated-execution framework layered on Nexus. A session key is granted a scoped set of policies (Sudo, Universal Action, Time Range, Usage Limit) that boun...

Biconomy AbstractJS SDK

AbstractJS (@biconomy/abstractjs) is Biconomy's TypeScript-first SDK with a Viem-inspired API. Wraps the Supertransaction API and Nexus smart account operations, exposing create...

Biconomy instructions API

The instructions API from Biconomy — 2 operation(s) for instructions.

Biconomy mee API

The mee API from Biconomy — 1 operation(s) for mee.

Biconomy root API

The root API from Biconomy — 2 operation(s) for root.

Scroll for all 8

Pricing Plans 1

Published pricing tiers and plan structures.

Biconomy Plans Pricing

2 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Biconomy Rate Limits

3 limits

RATE LIMITS

FinOps 1

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

Biconomy Finops

FINOPS

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Biconomy Context

24 classes · 3 properties

JSON-LD

Spectral Rules 2

Spectral governance rulesets for linting and validating these APIs.

Biconomy API Rules

5 rules · 3 warnings 2 info

SPECTRAL

Biconomy API Rules

6 rules · 4 errors 2 warnings

SPECTRAL

JSON Schema 2

Standalone JSON Schema definitions for this provider's data models.

Biconomy MEE Quote Request

8 properties

JSON SCHEMA

Biconomy MEE Quote Response

3 properties

JSON SCHEMA

JSON Structure 1

JSON Structure definitions describing this provider's data shapes.

Biconomy Supertransaction Structure

1 properties

JSON STRUCTURE

Examples 2

Example request and response payloads for these APIs.

Biconomy Execute Example

3 fields

EXAMPLE

Biconomy Quote Eoa 7702 Example

3 fields

EXAMPLE

Security Posture 2

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

Biconomy Authentication

apiKey · 1 scheme

SECURITY

Biconomy Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

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

Biconomy Agentic Access

5 operations · 5 acting

5 operations · 5 acting

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

Portal

Documentation 27

Reference material describing how the API behaves

Documentation

Documentation

Documentation

Documentation

Documentation

Documentation

Documentation

Documentation

Documentation

Documentation

Documentation

Documentation

Documentation

Documentation

Documentation

Documentation

Documentation

Documentation

Documentation

Documentation

Documentation

Documentation

Documentation

Documentation

Documentation

Documentation

Documentation

Scroll for all 27

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

Design & Contract 2

Pagination, idempotency, versioning, errors, and events

Rules

Build 12

SDKs, sample code, and the tooling you integrate with

SDKs

Scroll for all 12

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

Authentication

Operate 2

Status, limits, changes, and where to get help

Support

Commercial 2

Pricing, plans, and the legal terms of use

Plans

FinOps

Company 3

The organization behind the API

Blog

Twitter

Other 2

Properties that don't map to a standard resource type

Source (apis.yml)

aid: biconomy
url: https://raw.githubusercontent.com/api-evangelist/biconomy/refs/heads/main/apis.yml
apis:
- aid: biconomy:biconomy-bundler-api
  name: Biconomy Bundler API
  tags:
  - Account Abstraction
  - ERC-4337
  - Bundler
  - UserOps
  humanURL: https://github.com/bcnmy/bundler
  properties:
  - url: https://github.com/bcnmy/bundler
    type: SourceCode
  - url: https://docs.biconomy.io/contracts-and-audits/supported-chains
    type: Documentation
  description: Biconomy's open-source ERC-4337 TypeScript Bundler. Implements eth_sendUserOperation, eth_estimateUserOperationGas,
    eth_getUserOperationByHash, eth_getUserOperationReceipt, and eth_supportedEntryPoints across both EntryPoint v0.6.0 and
    v0.7.0. Hosted bundler endpoints are issued per project from the Biconomy Dashboard.
- aid: biconomy:biconomy-sponsorship-paymaster
  name: Biconomy Sponsorship Paymaster
  tags:
  - Account Abstraction
  - ERC-4337
  - Paymaster
  - Gas Sponsorship
  - Gasless
  humanURL: https://docs.biconomy.io/gasless-apps/sponsorship
  properties:
  - url: https://docs.biconomy.io/gasless-apps
    type: Documentation
  - url: https://docs.biconomy.io/gasless-apps/sponsorship
    type: Documentation
  - url: https://docs.biconomy.io/gasless-apps/testnet-sponsorship
    type: Documentation
  - url: https://docs.biconomy.io/gasless-apps/pay-in-tokens
    type: Documentation
  - url: https://github.com/bcnmy/biconomy-paymasters
    type: SourceCode
  - url: https://dashboard.biconomy.io
    type: Dashboard
  description: ERC-4337 paymaster service that fronts gas on behalf of end users so dApps can offer gasless UX. Two modes
    — full sponsorship (developer pays gas, post-paid invoiced monthly) and pay-in-tokens (user pays gas in ERC-20). All sponsorship
    limits (per-tx USD cap, per-user daily cap, allowed contracts, chain whitelist) are configured per project in the Biconomy
    Dashboard and enforced before /v1/quote returns a sponsored quote.
- aid: biconomy:biconomy-nexus-smart-account
  name: Biconomy Nexus Smart Account
  tags:
  - Account Abstraction
  - ERC-4337
  - ERC-7579
  - Smart Accounts
  - Modules
  humanURL: https://github.com/bcnmy/nexus
  properties:
  - url: https://github.com/bcnmy/nexus
    type: SourceCode
  - url: https://github.com/bcnmy/nexus/wiki
    type: Documentation
  - url: https://docs.biconomy.io/contracts-and-audits
    type: Documentation
  - url: https://docs.biconomy.io/contracts-and-audits/supported-chains
    type: Documentation
  description: Nexus is Biconomy's ERC-7579 modular smart contract account, audited by CodeHawks-Cyfrin (Sept 2024), Spearbit
    (Oct/Nov 2024), Zenith (Mar 2025), and Pashov (Mar 2025), and pre-deployed across 20+ EVM mainnets. Supports the four
    ERC-7579 module types (validator, executor, hook, fallback) and is the underlying account implementation behind eoa-7702
    mode of the MEE API.
- aid: biconomy:biconomy-smart-sessions-api
  name: Biconomy Smart Sessions API
  tags:
  - Account Abstraction
  - Smart Sessions
  - Agents
  - Automation
  - Policies
  humanURL: https://docs.biconomy.io/agents-automation
  properties:
  - url: https://docs.biconomy.io/agents-automation
    type: Documentation
  - url: https://docs.biconomy.io/agents-automation/implementation
    type: Documentation
  - url: https://docs.biconomy.io/agents-automation/agent-types
    type: Documentation
  - url: https://docs.biconomy.io/agents-automation/policies
    type: Documentation
  - url: https://docs.biconomy.io/agents-automation/policies/sudo
    type: Documentation
  - url: https://docs.biconomy.io/agents-automation/policies/universal-action
    type: Documentation
  - url: https://docs.biconomy.io/agents-automation/policies/time-range
    type: Documentation
  - url: https://docs.biconomy.io/agents-automation/policies/usage-limit
    type: Documentation
  - url: https://docs.biconomy.io/sdk-reference/sessions
    type: Documentation
  - url: https://github.com/bcnmy/session-permissioned-intents
    type: SourceCode
  description: Smart Sessions is a delegated-execution framework layered on Nexus. A session key is granted a scoped set of
    policies (Sudo, Universal Action, Time Range, Usage Limit) that bound what an agent or automation can execute on behalf
    of the owner. Intended for agents, recurring automations, and intent-flow access without re-prompting the owner for every
    transaction.
- aid: biconomy:biconomy-abstractjs-sdk
  name: Biconomy AbstractJS SDK
  tags:
  - SDK
  - TypeScript
  - Account Abstraction
  - MEE
  humanURL: https://docs.biconomy.io/overview/abstractjs
  properties:
  - url: https://docs.biconomy.io/overview/abstractjs
    type: Documentation
  - url: https://docs.biconomy.io/overview/abstractjs/setup
    type: Documentation
  - url: https://docs.biconomy.io/overview/abstractjs/composable-batching
    type: Documentation
  - url: https://docs.biconomy.io/overview/abstractjs/cross-chain
    type: Documentation
  - url: https://docs.biconomy.io/overview/abstractjs/conditional-execution
    type: Documentation
  - url: https://docs.biconomy.io/overview/abstractjs/cleanup
    type: Documentation
  - url: https://docs.biconomy.io/overview/abstractjs/estimating-gas
    type: Documentation
  - url: https://docs.biconomy.io/overview/abstractjs/batch-calls
    type: Documentation
  - url: https://docs.biconomy.io/sdk-reference
    type: Documentation
  - url: https://github.com/bcnmy/abstractjs
    type: SourceCode
  - url: https://www.npmjs.com/package/@biconomy/abstractjs
    type: SDKs
  description: AbstractJS (@biconomy/abstractjs) is Biconomy's TypeScript-first SDK with a Viem-inspired API. Wraps the Supertransaction
    API and Nexus smart account operations, exposing createMeeClient, getQuote, executeQuote, and waitForSupertransactionReceipt
    helpers, plus composable instruction builders for cross-chain orchestration, conditional execution, runtime balance injection,
    and cleanup.
- aid: biconomy:biconomy-instructions-api
  name: Biconomy instructions API
  description: The instructions API from Biconomy — 2 operation(s) for instructions.
  humanURL: https://docs.biconomy.io/overview/supertransaction-api
  baseURL: https://api.biconomy.io
  tags:
  - instructions
  properties:
  - type: OpenAPI
    url: openapi/biconomy-instructions-api-openapi.yml
  - type: Documentation
    url: https://docs.biconomy.io/overview/supertransaction-api
  - type: Documentation
    url: https://docs.biconomy.io/overview/supertransaction-api/get-quote
  - type: Documentation
    url: https://docs.biconomy.io/overview/supertransaction-api/quote-eoa
  - type: Documentation
    url: https://docs.biconomy.io/overview/supertransaction-api/quote-smart-account
  - type: Documentation
    url: https://docs.biconomy.io/overview/supertransaction-api/quote-7702
  - type: Documentation
    url: https://docs.biconomy.io/overview/supertransaction-api/sign-payload
  - type: Documentation
    url: https://docs.biconomy.io/overview/supertransaction-api/execute
  - type: JSONSchema
    url: json-schema/biconomy-quote-request-schema.json
  - type: JSONSchema
    url: json-schema/biconomy-quote-response-schema.json
  - type: JSONStructure
    url: json-structure/biconomy-supertransaction-structure.json
  - type: JSONLD
    url: json-ld/biconomy-context.jsonld
  - type: Examples
    url: examples/biconomy-quote-eoa-7702-example.json
  - type: Examples
    url: examples/biconomy-execute-example.json
- aid: biconomy:biconomy-mee-api
  name: Biconomy mee API
  description: The mee API from Biconomy — 1 operation(s) for mee.
  humanURL: https://docs.biconomy.io/overview/supertransaction-api
  baseURL: https://api.biconomy.io
  tags:
  - mee
  properties:
  - type: OpenAPI
    url: openapi/biconomy-mee-api-openapi.yml
  - type: Documentation
    url: https://docs.biconomy.io/overview/supertransaction-api
  - type: Documentation
    url: https://docs.biconomy.io/overview/supertransaction-api/get-quote
  - type: Documentation
    url: https://docs.biconomy.io/overview/supertransaction-api/quote-eoa
  - type: Documentation
    url: https://docs.biconomy.io/overview/supertransaction-api/quote-smart-account
  - type: Documentation
    url: https://docs.biconomy.io/overview/supertransaction-api/quote-7702
  - type: Documentation
    url: https://docs.biconomy.io/overview/supertransaction-api/sign-payload
  - type: Documentation
    url: https://docs.biconomy.io/overview/supertransaction-api/execute
  - type: JSONSchema
    url: json-schema/biconomy-quote-request-schema.json
  - type: JSONSchema
    url: json-schema/biconomy-quote-response-schema.json
  - type: JSONStructure
    url: json-structure/biconomy-supertransaction-structure.json
  - type: JSONLD
    url: json-ld/biconomy-context.jsonld
  - type: Examples
    url: examples/biconomy-quote-eoa-7702-example.json
  - type: Examples
    url: examples/biconomy-execute-example.json
- aid: biconomy:biconomy-root-api
  name: Biconomy root API
  description: The root API from Biconomy — 2 operation(s) for root.
  humanURL: https://docs.biconomy.io/overview/supertransaction-api
  baseURL: https://api.biconomy.io
  tags:
  - root
  properties:
  - type: OpenAPI
    url: openapi/biconomy-root-api-openapi.yml
  - type: Documentation
    url: https://docs.biconomy.io/overview/supertransaction-api
  - type: Documentation
    url: https://docs.biconomy.io/overview/supertransaction-api/get-quote
  - type: Documentation
    url: https://docs.biconomy.io/overview/supertransaction-api/quote-eoa
  - type: Documentation
    url: https://docs.biconomy.io/overview/supertransaction-api/quote-smart-account
  - type: Documentation
    url: https://docs.biconomy.io/overview/supertransaction-api/quote-7702
  - type: Documentation
    url: https://docs.biconomy.io/overview/supertransaction-api/sign-payload
  - type: Documentation
    url: https://docs.biconomy.io/overview/supertransaction-api/execute
  - type: JSONSchema
    url: json-schema/biconomy-quote-request-schema.json
  - type: JSONSchema
    url: json-schema/biconomy-quote-response-schema.json
  - type: JSONStructure
    url: json-structure/biconomy-supertransaction-structure.json
  - type: JSONLD
    url: json-ld/biconomy-context.jsonld
  - type: Examples
    url: examples/biconomy-quote-eoa-7702-example.json
  - type: Examples
    url: examples/biconomy-execute-example.json
name: Biconomy
tags:
- Account Abstraction
- Blockchain
- Bundler
- Cross-Chain
- DeFi
- ERC-4337
- ERC-7579
- ERC-7702
- Ethereum
- Gas Abstraction
- Gasless
- MEE
- Paymaster
- Smart Accounts
- Smart Sessions
- Wallets
- Web3
kind: contract
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/biconomy.png
access: 3rd-Party
common:
- type: AgenticAccess
  url: agentic-access/biconomy-agentic-access.yml
- type: DomainSecurity
  url: security/biconomy-domain-security.yml
- type: Authentication
  url: authentication/biconomy-authentication.yml
- url: https://www.biconomy.io
  name: Biconomy
  type: Portal
- url: https://docs.biconomy.io
  name: Documentation
  type: Documentation
- url: https://docs.biconomy.io/llms.txt
  name: LLMs.txt Index
  type: Documentation
- url: https://dashboard.biconomy.io
  name: Biconomy Dashboard
  type: Dashboard
- url: https://meescan.biconomy.io
  name: MEEScan Explorer
  type: Explorer
- url: https://github.com/bcnmy
  name: bcnmy GitHub Organization
  type: SourceCode
- url: https://github.com/bcnmy/nexus
  name: Nexus Smart Account
  type: SourceCode
- url: https://github.com/bcnmy/abstractjs
  name: AbstractJS SDK
  type: SourceCode
- url: https://github.com/bcnmy/bundler
  name: 4337 TypeScript Bundler
  type: SourceCode
- url: https://github.com/bcnmy/biconomy-paymasters
  name: Biconomy Paymasters
  type: SourceCode
- url: https://github.com/bcnmy/mee-node
  name: MEE Node
  type: SourceCode
- url: https://github.com/bcnmy/mee-contracts
  name: MEE Contracts
  type: SourceCode
- url: https://github.com/bcnmy/stx-contracts
  name: Cross-chain Supertransaction Contracts
  type: SourceCode
- url: https://github.com/bcnmy/erc8211-contracts
  name: ERC-8211 Contracts
  type: SourceCode
- url: https://github.com/bcnmy/entry-point-gas-estimations
  name: 4337 Gas Estimations SDK
  type: SourceCode
- url: https://github.com/bcnmy/session-permissioned-intents
  name: Smart Sessions Intents Demo
  type: SourceCode
- url: https://github.com/bcnmy/awesome-biconomy
  name: Awesome Biconomy
  type: Documentation
- url: https://www.npmjs.com/package/@biconomy/abstractjs
  name: '@biconomy/abstractjs on npm'
  type: SDKs
- url: https://docs.biconomy.io/sdk-reference
  name: AbstractJS SDK Reference
  type: Documentation
- url: https://docs.biconomy.io/sdk-reference/account
  name: Account Functions
  type: Documentation
- url: https://docs.biconomy.io/sdk-reference/client
  name: Client Methods
  type: Documentation
- url: https://docs.biconomy.io/sdk-reference/instructions
  name: Instructions
  type: Documentation
- url: https://docs.biconomy.io/sdk-reference/runtime
  name: Runtime Functions
  type: Documentation
- url: https://docs.biconomy.io/sdk-reference/conditions
  name: Conditions
  type: Documentation
- url: https://docs.biconomy.io/sdk-reference/sessions
  name: Smart Sessions API
  type: Documentation
- url: https://docs.biconomy.io/sdk-reference/utilities
  name: Utilities
  type: Documentation
- url: https://docs.biconomy.io/wallet-integrations
  name: Wallet Integrations
  type: Documentation
- url: https://docs.biconomy.io/wallet-integrations/privy/api
  name: Privy Integration
  type: Documentation
- url: https://docs.biconomy.io/wallet-integrations/turnkey/api
  name: Turnkey Integration
  type: Documentation
- url: https://docs.biconomy.io/wallet-integrations/para/api
  name: Para Integration
  type: Documentation
- url: https://docs.biconomy.io/wallet-integrations/external-wallets/api
  name: External Wallets Integration
  type: Documentation
- url: https://docs.biconomy.io/swaps-trading
  name: Swaps and Trading
  type: Documentation
- url: https://docs.biconomy.io/swaps-trading/gasless-swap
  name: Gasless Swap
  type: Documentation
- url: https://docs.biconomy.io/swaps-trading/cross-chain-swap
  name: Cross-Chain Swap
  type: Documentation
- url: https://docs.biconomy.io/swaps-trading/limit-order
  name: Limit Orders
  type: Documentation
- url: https://docs.biconomy.io/zaps
  name: Zaps (DeFi Vaults)
  type: Documentation
- url: https://docs.biconomy.io/agents-automation
  name: Agents and Automation
  type: Documentation
- url: https://docs.biconomy.io/gasless-apps
  name: Gasless Apps
  type: Documentation
- url: https://docs.biconomy.io/gasless-apps/sponsorship
  name: Sponsorship
  type: Documentation
- url: https://docs.biconomy.io/gasless-apps/pay-in-tokens
  name: Pay In Tokens
  type: Documentation
- url: https://docs.biconomy.io/contracts-and-audits
  name: Contracts and Audits
  type: Documentation
- url: https://docs.biconomy.io/contracts-and-audits/supported-chains
  name: Supported Chains
  type: Documentation
- url: https://www.biconomy.io/blog
  name: Blog
  type: Blog
- url: https://x.com/biconomy
  name: X / Twitter
  type: Twitter
- url: https://www.linkedin.com/company/biconomy
  type: LinkedIn
- url: https://discord.gg/biconomy
  name: Discord
  type: Support
- url: plans/biconomy-plans-pricing.yml
  name: Plans
  type: Plans
- url: rate-limits/biconomy-rate-limits.yml
  name: Rate Limits
  type: RateLimits
- url: finops/biconomy-finops.yml
  name: FinOps
  type: FinOps
- url: vocabulary/biconomy-vocabulary.yml
  name: Vocabulary
  type: Vocabulary
- url: rules/biconomy-rules.yml
  name: Spectral Rules
  type: Rules
include: []
maintainers:
- FN: Biconomy
  url: https://www.biconomy.io
  email: support@biconomy.io
overlays:
- type: APIs.io Search
  url: overlays/biconomy-apis-io-search.yml
- type: APIs.json Properties
  url: overlays/biconomy-apis-json-properties.yml
specificationVersion: '0.18'