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ERC-4337 P-256 smart-account master (#164): plan + contracts E0–E8 + live mainnet infra & demo#171

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ERC-4337 P-256 smart-account master (#164): plan + contracts E0–E8 + live mainnet infra & demo#171
hanwencheng merged 19 commits into
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Summary

Resolves the design + first implementation of #164 — migrate the master authority to an ERC-4337 P-256 smart-account (passkey-only master, no exportable secp256k1 key on any device). Plan → contracts → live mainnet infra → end-to-end demo, sequenced E0–E8. Also folds in the #168 EVM-level correction and consolidates the deployed-address registry.

Auth model (locked): Solution A — account-only / full-intent. The passkey signs the userOpHash, which commits the entire UserOp (callData + nonce + chainId + entryPoint), so the signature is a provably-complete full-intent authorization. That lets us retire the hand-rolled per-op K11 challenge + nonces in the registry/scope and replace them with msg.sender == masterAccount + the EntryPoint nonce.

Verified on Heima mainnet (chainId 212013)

  • EntryPoint v0.7 (canonical eth-infinitism bytecode) deployed: 0x6672E1b315332167aBA12E0B1d3532a7e9B1ADE9
  • P256AccountFactory deployed: 0x1ccCe65b22De81aDA4F378FeAf7503d93f5d27a3 (CREATE2 determinism smoke-verified)
  • E8 end-to-end: a passkey-only master (no secp256k1 key) deployed an account via the factory and landed a real master mutation (addSigner) via a WebAuthn-signed UserOp through handleOps — acct 0x3e79925F41E46CA87DD1103a572af7449CCd25a9, activeSignerCount 1→2.
  • The WebAuthn UserOp signer was validated against the live K11Verifier (verifyAssertion → true, zero gas) before any spend.

What landed

  • E0 — threat-model delta (docs/plan/chain/erc4337-threat-model.md): userOpHash-is-full-intent, ED-aware funding + Sybil resistance (broker-co-signed sponsorship gate), bundler trust, review checklist.
  • E1 — EntryPoint v0.7 + P256AccountFactory deployed live + recorded.
  • E2P256Account (WebAuthn via the deployed K11Verifier; multi-passkey signer set; execute/executeBatch) + P256AccountFactory (CREATE2). Codex-reviewed, 1 P2 fixed (verifier/decode reverts → SIG_VALIDATION_FAILED).
  • E3AgentKeysScope thinned to account-auth (in-contract K11 + scopeNonce retired; setScopeWithWebauthnsetScope). E4 — agent bind/revoke closed structurally (master = account ⇒ passkey-gated, no new code).
  • E5 — guardian M-of-N social recovery (generation rotation; independent of the lost primary passkey).
  • E6VerifyingPaymaster (broker-co-signed sponsorship = the Sybil gate; ED-aware) + scripts/erc4337-bundler.sh (unsafe-mode runner — Heima's Frontier RPC has no debug_traceCall).
  • E7harness/scripts/erc4337-webauthn-sign.py WebAuthn UserOp signer.
  • E8harness/erc4337-master-e8.sh, landed on harness/phase1-wire-demo.sh as phase6 (default in --real, skipped in --light); opt out --skip-6 / AGENTKEYS_ERC4337_E8=0. Runbook updated.
  • Docs/infra: docs/contracts.md is the new single deployed-address registry (anchored from arch.md §5; docs/spec/deployed-contracts.md → redirect; CLAUDE.md ref updated). docs: Heima EVM level is Cancun, not London (correct the rationale; keep the foundry pin) #168 stale "London EVM" comments corrected to Cancun in P256Verifier.sol / SidecarRegistry.sol / P256Verifier.t.sol.
  • Tests: 71 green (AgentKeysV1 25 · P256Account 23 · VerifyingPaymaster 6 · K11Verifier 9 · P256Verifier 8).

What did NOT land (residuals — by design)

  • Coordinated cutover redeploy is pending. The live registry/scope still run the old auth, and the live factory embeds the E2-era account (deployed before E5) — so on-chain accounts have addSigner (what E8 exercised) but not yet recover(). Cutover redeploys the factory (E3/E5-complete account) + registry + scope, and updates the broker scope-mint, heima-scope-set.sh (setScopeWithWebauthnsetScope), operator-workstation.env (env_set the EntryPoint/factory), verify-heima-contracts.sh, and arch.md §10/§12. CI skips first-master, so nothing breaks meanwhile. Full list in the plan §3.1.
  • Bundler not stood up live — direct handleOps proves the path; the bundler is the always-on automation layer.

Reviewer notes

Relationships: resolves #164 · unblocks #163 · builds on #166, #168 · spawned #170.

🤖 Generated with Claude Code

…ch.md §5 anchor; deployed-contracts.md→redirect
…rotation, independent of primary passkey); +6 tests
…ship = Sybil gate) +6 tests; unsafe-mode bundler runner
…ter demo landed on phase1-wire-demo.sh (phase6); ran green on Heima mainnet (acct 0x3e79925F, addSigner via UserOp, no secp256k1 key)
…n --light; opt out --skip-6 / AGENTKEYS_ERC4337_E8=0) + runbook
…hase-0 agentkeys-cli guard (#164)

- erc4337-master-e8.sh: fresh (default) vs reuse (auto when $CI) modes; reuse uses a
  persistent passkey+fixed salt (deterministic account), funds only when low; delta
  assertion (count +1) works for both. Fix _has_code (cast code '0x' != empty).
- webauthn-sign.py: keygen idempotent (load-if-exists) so reuse keeps its address.
- phase1-wire-demo.sh: 0.2b real-mode guard fails loud if the on-PATH agentkeys lacks
  the 'agent' subcommand (the stale-binary cascade).
- runbook: document the two E8 modes + env vars.
…he stale-binary cascade) + runbook

0.2b now runs 'cargo build --release -p agentkeys-cli' so the master-side CLI Phase P
uses ($REPO_ROOT/target/release/agentkeys — already preferred at P.0/P.1) is current,
then verifies the actual binary has the 'agent' subcommand. Opt out AGENTKEYS_SKIP_CLI_BUILD=1.
Runbook: real-mode prereq + troubleshooting row document the build + manual fallback.
…sorbed the → byte into the var name (set -u: 'BEFORE: unbound variable')
… smoke, not a phase

Per arch.md §9 the 4337 account binds to the MASTER ONBOARDING ceremony (K11 at
stage 2, register the account at stage 4) = #164 E7, landing with the registry
cutover. The standalone erc4337-master-e8.sh uses a throwaway software passkey, so
it proves the mechanism but is NOT the ceremony (the real master K11 is in the
platform authenticator → needs a Touch ID assert). Remove phase6 + the call + the
--real header note from phase1-wire-demo.sh (keep the 0.2b Phase-P CLI guard).
Runbook + plan reframed; #164 E8 row → mechanism smoke, E7 → ceremony binding.
- #1 HIGH: VerifyingPaymaster.getHash now binds the paymaster gas limits
  (paymasterAndData[20:52]) so a valid broker sig can't be reused with inflated
  limits. +test_RejectsTamperedGasLimits.
- #3 MED: recover() dedups guardians by (pubX,pubY), not just credIdHash, so one
  physical key under two credIds can't satisfy an M>=2 quorum. +test.
- #2 HIGH (deployment-ordering): warn in AgentKeysScope @dev + threat-model §10 —
  never deploy the thinned scope before the registry cutover (else an EOA master
  could setScope with no biometric).
- #4/#5 documented in threat-model §10 (malleability is nonce-mitigated; recover-to-
  unusable-signer is operator error). 73 tests green.
@hanwencheng hanwencheng merged commit d7a5c8b into main Jun 2, 2026
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hanwencheng added a commit that referenced this pull request Jun 2, 2026
…4337, #168 Cancun, #166 bootstrap)

The chain side this plan waited on has landed; reconcile the web-wiring plan with it
and correct two now-false facts.

- Top status banner: ERC-4337 P-256 master account is IMPLEMENTED (#171, Solution A) —
  EntryPoint v0.7 + P256Account + factory + VerifyingPaymaster live on Heima mainnet; #164
  closed. Heima is Cancun, not London (#168). Bootstrap front-run fixed (#166). Defers to
  docs/plan/chain/erc4337-master-account.md.
- §11 (gating): retitled '✅ RESOLVED by #171 (historical)' + a correction note; the
  'does-NOT-auto-fix' block rewritten as 'all addressed' (bootstrap #166; full-intent
  structural via userOpHash; agent-bind/multi-device #171 E3/E4/E5); fixed the false
  'London / no PUSH0' claim → Cancun + pure-Solidity P-256 (~707k gas, no RIP-7212).
- §4.3 + §12 X4: the K11→chain bridge is now an ERC-4337 UserOp (passkey-signs userOpHash
  → broker-gated bundler / handleOps → P256Account); reference erc4337-webauthn-sign.py +
  erc4337-master-e8.sh. Retired the cast/--assertion-file path.
- §5a/§5b: onboarding stage 2 derives the P256Account (CREATE2 from passkey); stage 4 =
  one initCode+registerFirstMasterDevice UserOp (= chain-plan E7, routed through #163);
  bind/grant via UserOp; setScopeWithWebauthn→setScope (E3). §6 W2 + §9 risk updated.
- security-review.md: header marks every finding addressed (#166/#171); Cancun.
- data-model.md phone-first note + arch.md §22c.3: 'decided/London/delegate' → 'implemented
  #171 / Cancun #168 / passkey-signed UserOp'.

Incorporates #163 comments (codex prerequisites + Kailai's Cancun/P-256 feasibility).
hanwencheng added a commit that referenced this pull request Jun 2, 2026
…162)

* docs(web-flow): plan to wire parent-control UI to real backends (learn from wire demo)

Add docs/plan/web-flow/wire-real-paths.md — an execution plan for turning every
narrated / in-memory-stub path in the parent-control UI + daemon ui-bridge into the
SAME real calls harness/phase1-wire-demo.sh makes (broker auth, broker cap-mint,
on-chain cast writes, S3-backed memory worker).

Key decisions captured:
- Daemon-as-orchestrator: browser → daemon ui-bridge only; daemon makes the real
  broker/chain/worker calls (the data-model.md seam).
- Reuse what exists: the daemon's proxy.rs broker client (reqwest + bearer +
  fail-closed) for broker calls; shell out to the existing agentkeys CLI +
  scripts/heima-*.sh (cast) for chain writes — no new Rust chain client.
- The load-bearing K11 bridge: browser does navigator.credentials WebAuthn → daemon
  injects the assertion into the chain tx via a new --assertion-file mode on
  heima-scope-set.sh (avoids a double Touch ID).
- Per-flow wiring tables (onboarding §9 stages 0–4, pairing §10.2, memory) mapping
  UI surface → data-model.md endpoint → real backend call → arch ref.
- Sequenced phases W0–W6, harness-parity test, and reconciliation of stale specs
  (superseded bootstrap endpoints, --upgrade no-op).

Cross-linked from issue-9step-flow.md as the execution detail for P2.1–P2.4.

* docs(web-flow): phone-first host model + verified gating decision + WASM lift scope

Amends the wiring plan for the phone-first reality (most operators have only a
phone, no desktop), keeping one consistent implementation across hosts:

- wire-real-paths.md §0.5 (host-model decision): factor the master-plane logic into
  one portable agentkeys-core hosted as WASM (web) / native lib (mobile, via UniFFI) /
  daemon (desktop), all behind the same lib/client AgentKeysClient contract. The daemon
  is demoted to one host, not a requirement; the broker is the only always-on component;
  the master plane is event-driven + biometric-gated (push-woken).
- wire-real-paths.md §11 (gating decision, VERIFIED): read SidecarRegistry.sol +
  AgentKeysScope.sol. Every master write is msg.sender-bound to the operator secp256k1
  key; the K11 P-256 assertion is an additional gate, not a substitute. => no relayer /
  key-free path without a contract change. Phone holds the secp256k1 key in the Keychain
  (SE is P-256-only, so it seals the K11 passkey, not the EVM key); browser/WASM cannot
  custody it and must delegate the broadcast. Fork (A) keep msg.sender-bound vs (B) move
  to assertion-only auth — recommend (A) for the phone MVP.
- wire-real-paths.md §12 (WASM lift scope): agentkeys-core carve-out, wasm-bindgen
  exports, CoreBackend, WebAuthn interop, chain-write delegation — shared with the future
  mobile UniFFI shell.
- data-model.md: flag the browser-direct prohibition as desktop-first, relaxed for the
  master plane (chain writes still constrained per §11).
- arch.md §22c.3: master control-plane host-model paragraph (defers to the plan).

* docs(web-flow): adversarial security review of §11 gating (codex) — (A) not sound as written

Codex adversarial review of the §11 gating decision, verified against the contracts.
Verdict: fork (A) is the right direction (contracts are NOT assertion-only-safe) but
NOT sound as written. Findings (full doc: wire-real-paths-security-review.md):
- CRITICAL: registerFirstMasterDevice unauthenticated first-call-wins → front-runnable
  operator lockout (SidecarRegistry.sol:100-123).
- HIGH: registerAgentDevice/revokeAgentDevice are msg.sender-only, no K11 (:214-251) —
  a compromised master EVM key binds rogue agents with no biometric.
- HIGH: add-master K11 challenge omits newActorOmni + K11 cred/pubkey/attestation (:167-193).
- HIGH: 'phone holds the key' = software secp256k1 root (not SE-sealed) — weaker than the
  K11 hardware promise; model it as a first-class key.
- HIGH: single global operatorMasterWallet (:66) ⇒ multi-device/recovery story incomplete.
- HIGH: browser→host delegation needs a native confirmation that re-derives the challenge.
- MEDIUM: AgentKeysScope doesn't update WebAuthn signCount; fork (B) unsafe until full-intent
  K11 binding lands on every path.
Confirms the relayer analysis: non-custodial relayer impossible under (A) without
meta-tx/ERC-4337 (EIP-2771 sponsors gas but still needs the secp key).
§11 recommendation updated to reflect 'not sound as written' + required-changes checklist.

* docs(web-flow): record ERC-4337 P-256 smart-account master as the confirmed decision

Supersedes the §11 fork-A-as-MVP framing. The master becomes an ERC-4337 smart account
whose validateUserOp verifies a P-256 (K11/passkey) signature; a bundler broadcasts, an
optional paymaster sponsors gas. Resolves the codex findings:
- removes the software-secp256k1 root (clients sign UserOps with the SE-sealed passkey only);
- key-free + relayer in one (no custodial relayer; bundler + paymaster);
- account address is the stable master → multiple passkeys + quorum recovery (multi-device gap);
- web + mobile become symmetric full masters → the browser→host delegation hop dissolves;
- reuses existing on-chain P-256 verify (K11Verifier.sol).
Residual (folded into the contract-hardening issue): authenticated first-master bootstrap
(CRITICAL), full-intent binding in validateUserOp, and Heima EntryPoint + Solidity-P-256
(London-level, no RIP-7212). Updated §0.5 table, §11 (decision block), §12 (X4/scope),
the security-review doc, and arch.md §22c.3.

* docs(web-flow): revise #162 plan for the landed chain work (#171 ERC-4337, #168 Cancun, #166 bootstrap)

The chain side this plan waited on has landed; reconcile the web-wiring plan with it
and correct two now-false facts.

- Top status banner: ERC-4337 P-256 master account is IMPLEMENTED (#171, Solution A) —
  EntryPoint v0.7 + P256Account + factory + VerifyingPaymaster live on Heima mainnet; #164
  closed. Heima is Cancun, not London (#168). Bootstrap front-run fixed (#166). Defers to
  docs/plan/chain/erc4337-master-account.md.
- §11 (gating): retitled '✅ RESOLVED by #171 (historical)' + a correction note; the
  'does-NOT-auto-fix' block rewritten as 'all addressed' (bootstrap #166; full-intent
  structural via userOpHash; agent-bind/multi-device #171 E3/E4/E5); fixed the false
  'London / no PUSH0' claim → Cancun + pure-Solidity P-256 (~707k gas, no RIP-7212).
- §4.3 + §12 X4: the K11→chain bridge is now an ERC-4337 UserOp (passkey-signs userOpHash
  → broker-gated bundler / handleOps → P256Account); reference erc4337-webauthn-sign.py +
  erc4337-master-e8.sh. Retired the cast/--assertion-file path.
- §5a/§5b: onboarding stage 2 derives the P256Account (CREATE2 from passkey); stage 4 =
  one initCode+registerFirstMasterDevice UserOp (= chain-plan E7, routed through #163);
  bind/grant via UserOp; setScopeWithWebauthn→setScope (E3). §6 W2 + §9 risk updated.
- security-review.md: header marks every finding addressed (#166/#171); Cancun.
- data-model.md phone-first note + arch.md §22c.3: 'decided/London/delegate' → 'implemented
  #171 / Cancun #168 / passkey-signed UserOp'.

Incorporates #163 comments (codex prerequisites + Kailai's Cancun/P-256 feasibility).
hanwencheng added a commit that referenced this pull request Jun 2, 2026
…cs/plan/ (#173)

Contracts: merge docs/contracts.md (#171 superset) and the spec/ deployed-contracts redirect into a single canonical docs/spec/deployed-contracts.md; restore the ABI-summary + re-deploy sections #171 trimmed; add an explicit prod-vs-test EVM deployer-wallet table (local 0xdE64..63Bc, test/CI 0x9FE9..F259). docs/contracts.md is now a redirect. Repoint arch.md §5 + CLAUDE.md + operator-runbook-wire + the erc4337 plan.

Plans: remove docs/spec/plans/. Active plans -> docs/plan/ (incl. the canonical milestones-roadmap + execution-plan); shipped/outdated -> docs/archived/ (issue-64/, issue-107-mcp-server-phase1, issue-144, issue-74-dev-key-service, agent-initiated-pairing-method-a, design-spec, eng-review-test-plan). Rewrite ~50 references repo-wide (docs, wiki, Rust doc-comments, Cargo.toml, harness/scripts, pm/, README) and depth-correct relative links in moved files. Rewrite docs/plan/README.md index.

Verified: broken-link scan shows zero broken links to any moved/contract file; code changes are comment/doc-string only (no logic touched).
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Migrate master authority to an ERC-4337 P-256 smart-account (resolves §11 gating findings)

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