# Biconomy

**Canonical:** https://apis.io/providers/biconomy/  
**Website:** https://www.biconomy.io  
**APIs profiled:** 8

## Kin Score — 44.4 / 100 (developing)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 44.4).

| Facet | Score |
|---|---|
| Discoverability | 55.6 |
| Contract Quality | 71.3 |
| Governance | 25.0 |
| Contract Governance | 25.0 |
| Operational Transparency | 31.6 |
| Developer Ergonomics | 45.2 |
| Commercial Clarity | 28.9 |
| Access Clarity | 28.9 |

Regulatory layer — **Payments**: 26.6 (matched via tags).

## Agent readiness — 38.5 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | yes |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | verified |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | yes |

## Access

Freemium · Self-serve signup — onboarding: self-serve, pricing: freemium, trial: no (confidence: high).

## APIs (8)

- **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.

## Agentic access (1)

- **Biconomy Agentic Access** — 5 operations · 5 acting

## Security (2)

- **Biconomy Authentication** — apiKey · 1 scheme
- **Biconomy Domain Security** — TLSv1.3 · HSTS · DMARC

## Plans (1)

- **Biconomy Plans Pricing**

## 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

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/biconomy/). Scores are computed from the provider's own public artifacts under a published rubric.