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Biconomy

Biconomy is the onchain orchestration layer for multi-chain applications, founded in 2019 and headquartered in Singapore. Its Modular Execution Environment (MEE) composes multi-step, cross-chain blockchain workflows — swaps, bridges, DeFi vault deposits, arbitrary contract calls — into a single user signature across 20+ EVM mainnets, handling sequencing, runtime parameter injection, bridge timing, gas abstraction, simulation-based async execution and failure recovery on the developer's behalf. The commercial surface is a REST Supertransaction API (POST /v1/quote, POST /v1/execute) plus the TypeScript AbstractJS SDK, both sitting on the same engine and the same project API key. Underneath, Biconomy ships open-source account-abstraction infrastructure: an ERC-4337 bundler, ERC-4337 paymasters for gas sponsorship and pay-in-token flows, and Nexus, an ERC-7579 modular smart account audited by Cyfrin, Spearbit, Zenith and Pashov. Smart Sessions layers scoped, time-limited, revocable on-chain delegation on top, which is how AI agents and automations transact on a user's behalf without holding their key. Biconomy also authored ERC-8211 for composable batching.

agent ready

Solid contracts, transparent operations, and an easy start — typically complete on four or five facets with one clear soft spot.

Kin Score

API Evangelist profiles Biconomy the way a machine reads it — 30 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 — Biconomy scores 58.3/100 (strong), with a separate agent-readiness read of 38/100 (agent ready). 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 Kin Score How this is scored →
scored 2026-09-10 · rubric v0.20.0
Biconomy Kin Score — API readiness rating by API Evangelist

Put this on your own site. The badge is drawn live from Biconomy's current Kin Score — paste it once and it updates itself every time the score is recomputed. It follows your visitor's light or dark setting, and it links back here so anyone who sees it can read the full breakdown.

<!-- Kin Score · API Evangelist -->
<a href="https://providers.apievangelist.com/providers/biconomy/"
   title="Biconomy on API Evangelist — API profile and Kin Score">
  <img src="https://apis.io/badge/biconomy.svg"
       alt="Biconomy Kin Score — API readiness rating by API Evangelist" width="150" height="150" loading="lazy">
</a>

More shapes, themes and sizes → · Score as JSON · How badges work

How we profile Biconomy

Each block below is one kind of artifact we hold for Biconomy. 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 10

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.

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.

Biconomy Dashboard Public API

GET /api/public/projects/me/supertransactions returns a project's full supertransaction history for reporting, reconciliation and gas-spend accounting. Each item carries the sup...

Biconomy MEE Explorer API

Status and tracking surface for a submitted supertransaction. GET /v1/explorer/{supertxHash} returns the terminal execution state (SUCCESS, FAILED) with execution details, authe...

Scroll within the panel for all 10 ·

Open Collections 4

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).

MCP Servers 2

Model Context Protocol servers expose these APIs directly to AI agents. We profile them because agent-native access is the fastest-growing way this provider's capabilities actually get used.

Model Context Protocol servers that expose these APIs to AI agents.

Biconomy Docs MCP Server

Biconomy runs a hosted, anonymous-access MCP server on its documentation host. It is a DOCUMENTATION server, not an execution server: the three tools search, browse and give fee...

MCP SERVER

Pricing Plans 1

Pricing is part of the interface. Machine-readable plans tell you what a tier costs and includes before you commit — one of the things the Kin Score reads for access clarity — renamed from commercial clarity in rubric 0.12, because a free statutory interface has access terms and no commercial ones.

Published pricing tiers and plan structures.

Rate Limits 1

Rate limits are the difference between a demo that works and a production integration that doesn't fall over. Publishing them is an operational-transparency signal — and a hard requirement for any agent that plans its own throughput.

Documented rate limits and quota policies.

Biconomy Rate Limits

3 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals let a buyer model the financial operations of an API before it's live. We profile them for the same reason we profile pricing: the money is part of the contract.

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

Semantic Vocabularies 1

JSON-LD contexts give the data shared meaning across APIs. We profile them because semantics are what let a machine reconcile 'customer' here with 'customer' somewhere else.

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

Biconomy Context

24 classes · 3 properties

JSON-LD

Spectral Rules 2

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.

Biconomy API Rules

5 rules · 3 warnings

SPECTRAL

Biconomy API Rules

6 rules · 4 errors · 2 warnings

SPECTRAL

JSON Schema 2

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.

Biconomy MEE Quote Request

8 properties

JSON SCHEMA

Biconomy MEE Quote Response

3 properties

JSON SCHEMA

JSON Structure 1

JSON Structure captures the data shapes in a form built for tooling — a complement to JSON Schema that keeps the model machine-legible.

JSON Structure definitions describing this provider's data shapes.

Biconomy Supertransaction Structure

1 properties

JSON STRUCTURE

Examples 2

Real request and response payloads are what turn a spec from abstract into obvious — and they're one of the twelve things an agent needs to call an API correctly on the first try.

Example request and response payloads for these APIs.

Security 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.

Biconomy Authentication

apiKey/http-bearer · 3 schemes

SECURITY

Biconomy Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

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.

Biconomy Agentic Access

5 operations · 5 acting

5 operations · 5 acting

AGENTIC

Resources

Every other property we hold for Biconomy — 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.

Design & Contract 7

Pagination, idempotency, versioning, errors, and events

Scroll within the panel for all 7 ·

Access & Security 2

Authentication, authorization, and security posture

Commercial 2

Pricing, plans, and the legal terms of use

Other 4

Properties that don't map to a standard resource type

← All providers · Data indexed from github.com/api-evangelist/biconomy · machine-readable index on apis.io

Where this information came from

This is an independent, third-party profile of Biconomy, 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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On a security or compliance team? Put security in the subject line and you will get a person, not a form — we will tell you exactly which public URLs this profile was built from.