Requirements
- Target platform
- OpenClaw
- Install method
- Manual import
- Extraction
- Extract archive
- Prerequisites
- OpenClaw
- Primary doc
- SKILL.md
Tencent SkillHub Β· Developer Tools
ERC-8128
Sign and verify HTTP requests with Ethereum wallets using ERC-8128. Use when building authenticated APIs that need wallet-based auth, making signed requests...
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Sign and verify HTTP requests with Ethereum wallets using ERC-8128. Use when building authenticated APIs that need wallet-based auth, making signed requests...
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Install for OpenClaw
Quick setup
- Download the package from Yavira.
- Extract the archive and review SKILL.md first.
- Import or place the package into your OpenClaw setup.
Package facts
- Download mode
- Yavira redirect
- Package format
- ZIP package
- Source platform
- Tencent SkillHub
- What's included
- SKILL.md, references/cli.md
Validation
- Use the Yavira download entry.
- Review SKILL.md after the package is downloaded.
- Confirm the extracted package contains the expected setup assets.
Install with your agent
Agent handoff
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Trust & source
Release facts
- Source
- Tencent SkillHub
- Verification
- Indexed source record
- Version
- 1.0.0
Provenance
- Publisher
- jacopo-eth
- Source page
- View original listing
- Canonical URL
- Open canonical page
Documentation
ERC-8128: Ethereum HTTP Signatures
ERC-8128 extends RFC 9421 (HTTP Message Signatures) with Ethereum wallet signing. It enables HTTP authentication using existing Ethereum keysβno new credentials needed. π Full documentation: erc8128.slice.so
When to Use
API authentication β Wallets already onchain can authenticate to your backend Agent auth β Bots and agents sign requests with their operational keys Replay protection β Signatures include nonces and expiration Request integrity β Sign URL, method, headers, and body
Packages
PackagePurpose@slicekit/erc8128JS library for signing and verifying@slicekit/erc8128-cliCLI for signed requests (erc8128 curl)
Sign requests
import { createSignerClient } from '@slicekit/erc8128' import type { EthHttpSigner } from '@slicekit/erc8128' import { privateKeyToAccount } from 'viem/accounts' const account = privateKeyToAccount('0x...') const signer: EthHttpSigner = { chainId: 1, address: account.address, signMessage: async (msg) => account.signMessage({ message: { raw: msg } }), } const client = createSignerClient(signer) // Sign and send const response = await client.fetch('https://api.example.com/orders', { method: 'POST', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify({ amount: '100' }), }) // Sign only (returns new Request with signature headers) const signedRequest = await client.signRequest('https://api.example.com/orders')
Verify requests
import { createVerifierClient } from '@slicekit/erc8128' import type { NonceStore } from '@slicekit/erc8128' import { createPublicClient, http } from 'viem' import { mainnet } from 'viem/chains' // NonceStore interface for replay protection const nonceStore: NonceStore = { consume: async (key: string, ttlSeconds: number): Promise<boolean> => { // Return true if nonce was successfully consumed (first use) // Return false if nonce was already used (replay attempt) } } const publicClient = createPublicClient({ chain: mainnet, transport: http() }) const verifier = createVerifierClient(publicClient.verifyMessage, nonceStore) const result = await verifier.verifyRequest(request) if (result.ok) { console.log(`Authenticated: ${result.address} on chain ${result.chainId}`) } else { console.log(`Failed: ${result.reason}`) }
Sign options
OptionTypeDefaultDescriptionbinding"request-bound" | "class-bound""request-bound"What to signreplay"non-replayable" | "replayable""non-replayable"Include noncettlSecondsnumber60Signature validitycomponentsstring[]βAdditional components to signcontentDigest"auto" | "recompute" | "require" | "off""auto"Content-Digest handling request-bound: Signs @authority, @method, @path, @query (if present), and content-digest (if body present). Each request is unique. class-bound: Signs only the components you explicitly specify. Reusable across similar requests. Requires components array. π See Request Binding for details.
Verify policy
OptionTypeDefaultDescriptionmaxValiditySecnumber300Max allowed TTLclockSkewSecnumber0Allowed clock driftreplayablebooleanfalseAllow nonce-less signaturesclassBoundPoliciesstring[] | string[][]βAccepted class-bound component sets π See Verifying Requests and VerifyPolicy for full options.
CLI: erc8128 curl
For CLI usage, see references/cli.md. Quick examples: # GET with keystore erc8128 curl --keystore ./key.json https://api.example.com/data # POST with JSON erc8128 curl -X POST \ -H "Content-Type: application/json" \ -d '{"foo":"bar"}' \ --keyfile ~/.keys/bot.key \ https://api.example.com/submit # Dry run (sign only) erc8128 curl --dry-run -d @body.json --keyfile ~/.keys/bot.key https://api.example.com π See CLI Guide for full documentation.
Express middleware
import { verifyRequest } from '@slicekit/erc8128' import type { NonceStore } from '@slicekit/erc8128' import { createPublicClient, http } from 'viem' import { mainnet } from 'viem/chains' const publicClient = createPublicClient({ chain: mainnet, transport: http() }) // Implement NonceStore (Redis example) const nonceStore: NonceStore = { consume: async (key, ttlSeconds) => { const result = await redis.set(key, '1', 'EX', ttlSeconds, 'NX') return result === 'OK' } } async function erc8128Auth(req, res, next) { const result = await verifyRequest( toFetchRequest(req), // Convert Express req to Fetch Request publicClient.verifyMessage, nonceStore ) if (!result.ok) { return res.status(401).json({ error: result.reason }) } req.auth = { address: result.address, chainId: result.chainId } next() }
Agent signing (with key file)
import { createSignerClient } from '@slicekit/erc8128' import type { EthHttpSigner } from '@slicekit/erc8128' import { privateKeyToAccount } from 'viem/accounts' import { readFileSync } from 'fs' const key = readFileSync(process.env.KEYFILE, 'utf8').trim() const account = privateKeyToAccount(key as `0x${string}`) const signer: EthHttpSigner = { chainId: Number(process.env.CHAIN_ID) || 1, address: account.address, signMessage: async (msg) => account.signMessage({ message: { raw: msg } }), } const client = createSignerClient(signer) // Use client.fetch() for all authenticated requests
Verify failure reasons
type VerifyFailReason = | 'missing_headers' | 'label_not_found' | 'bad_signature_input' | 'bad_signature' | 'bad_keyid' | 'bad_time' | 'not_yet_valid' | 'expired' | 'validity_too_long' | 'nonce_required' | 'replayable_not_allowed' | 'replayable_invalidation_required' | 'replayable_not_before' | 'replayable_invalidated' | 'class_bound_not_allowed' | 'not_request_bound' | 'nonce_window_too_long' | 'replay' | 'digest_mismatch' | 'digest_required' | 'alg_not_allowed' | 'bad_signature_bytes' | 'bad_signature_check' π See VerifyFailReason for descriptions.
Key Management
For agents and automated systems: MethodSecurityUse Case--keyfileMediumUnencrypted key file, file permissions for protection--keystoreHighEncrypted JSON keystore, password requiredETH_PRIVATE_KEYLowEnvironment variable, avoid in productionSigning serviceHighDelegate to external service (SIWA, AWAL)
Documentation
Full docs: erc8128.slice.so Quick Start: erc8128.slice.so/getting-started/quick-start Concepts: erc8128.slice.so/concepts/overview API Reference: erc8128.slice.so/api/signRequest ERC-8128 Spec: GitHub
Category context
Code helpers, APIs, CLIs, browser automation, testing, and developer operations.
Source: Tencent SkillHub
Largest current source with strong distribution and engagement signals.
Package contents
Included in package
2 Docs
- SKILL.md
- references/cli.md