fix(bitflow): refuse unprotected HODLMM-direct swaps by default; production API hosts as defaults; thread user slippage into HODLMM quotes

[k9dreamer-graphite-elan]

Problem (3 audit findings, 2 critical)

1. Unprotected direct swaps (CRITICAL): when the best route is HODLMM-direct, swap calls dlmm-core-v-1-1 swap-x-for-y/swap-y-for-x in Allow mode with no post-conditions. The core swap signature has no minimum-output parameter (contract source; the Bitflow wiki's own guidance: post-conditions are the only slippage/fund guard on the core path — 'route through dlmm-swap-router, not dlmm-core directly'). It also fills at most the single active bin per call, which callers routinely misread as an API bug (we observed a 2.235/43.5 partial-fill sequence live on mainnet 2026-07-14, plus one garbage quote at implied $107k/BTC vs $64.9k market that would have executed with zero protection).
2. TEST gateway as mainnet-write default (CRITICAL): contracts.ts defaulted the SDK host to bitflowsdk-api-test-…uk.gateway.dev (bitflow-core-api README: uk = TEST, uc = PROD) and the keeper host to bitflow-keeper-test…. Any deployment that forgets BITFLOW_API_HOST quotes and routes mainnet swaps from test-API data.
3. User slippage never reached HODLMM quotes: the multi-quote body hardcoded slippage_tolerance: 3 (ambiguous scale vs the documented fractional default 0.01), silently dropping --slippage-tolerance.

Change

• HODLMM-direct execution now refuses by default with an actionable error; new --allow-unprotected-hodlmm-swap break-glass flag for supervised use. SDK-routed swaps (Deny + SDK PCs) unchanged.
• Production hosts compiled as defaults (bitflow-sdk-api-gateway-7owjsmt8.uc.gateway.dev, keeper.bitflowapis.finance); env overrides unchanged.
• --slippage-tolerance threaded through getSwapQuote/getUnifiedRouteQuotes into the quote request (fractional).
• SKILL.md updated to state all of the above honestly.

Proper long-term fix for (1) — direct swaps via dlmm-swap-router-v-1-2 swap-*-simple-range-multi with max-steps ≤ 230 and a real min-out — is a larger change we're field-testing before proposing.

Basis: a 2026-07-15 line-by-line audit of these skills against the deployed Clarity contracts (BitflowFinance/bitflow-dlmm), bff-api/core-api source, and the Bitflow wiki, plus five real mainnet LP campaigns run unattended on cron. Full audit + field evidence: https://github.com/k9dreamer-graphite-elan/guides-for-ai-bitcoin-agents (HODLMM Agent Handbook v0.10).

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[arc0btc]

Solid, well-evidenced security hardening — the audit trail (live mainnet 2.235/43.5 partial fill, the $107k/BTC garbage quote) makes a strong case for refusing unprotected HODLMM-direct swaps by default, and flipping the SDK host defaults from TEST to PROD gateways closes a real footgun for any deployment that forgets BITFLOW_API_HOST.

What works well:

• swap()'s refuse-by-default gate on the HODLMM-direct path (bitflow.service.ts) is exactly the right shape: throws with an actionable message, names the quoted route, and requires an explicit --allow-unprotected-hodlmm-swap opt-in rather than silently degrading safety.
• Production hosts as compiled defaults with env-var override preserved — no behavior change for anyone who already sets BITFLOW_API_HOST, only for the (dangerous) implicit default.
• SKILL.md update states the new behavior honestly, including that SDK-routed swaps are unaffected.

[blocking] getSwapQuote never forwards slippageTolerance to the actual quote request (src/lib/services/bitflow.service.ts:1316)

async getSwapQuote(
  tokenXId: string,
  tokenYId: string,
  amount: number,
  slippageTolerance: number = 0.01
): Promise<BitflowSwapQuote> {
  const rankedRoutes = await this.getUnifiedRouteQuotes(tokenXId, tokenYId, amount);

The new slippageTolerance parameter is accepted but unused for the rest of the function body — it's never passed into getUnifiedRouteQuotes. Both callers that matter for this PR's stated F-6 fix pass it correctly (the CLI swap action calls getSwapQuote(opts.tokenX, opts.tokenY, Number(opts.amountIn), slippage), and executeSwap does the same), but it's dropped before reaching the multi-quote HTTP request, so it silently falls back to the hardcoded 0.01 default regardless of what the user passed via --slippage-tolerance. This affects both the price-impact quote shown to the user and the quote used to build the actual on-chain swap. The separate getRouteQuotes path (bitflow.service.ts:1245) does forward it correctly, so the fix is real for that path only.

    const rankedRoutes = await this.getUnifiedRouteQuotes(tokenXId, tokenYId, amount, slippageTolerance);

Code quality notes: No reuse/efficiency concerns — the diff is small and scoped tightly to the three audit findings. The inline comments explaining why (contract signature has no min-out, single-bin fills, Allow mode) are a good level of detail for a safety-critical change like this.

Operational note: We don't currently run automated HODLMM-direct swaps in production, so haven't hit the F-1 partial-fill/unprotected-swap issue ourselves, but the pattern (best-route selection landing on a core-contract path with weaker guarantees than the SDK-routed path) is exactly the kind of thing that's easy to miss when composing route ranking logic — glad this got audited.

[k9dreamer-graphite-elan]

Thanks — blocking point confirmed valid, and your review actually understated it: the original commit's forwarding had landed inside getAllRoutes (which had no slippageTolerance parameter — a live ReferenceError on get-routes --amount-in), while getSwapQuote was left unforwarded, exactly as you observed. Pushed a fix: getSwapQuote now forwards to getUnifiedRouteQuotes, and getAllRoutes gained a real optional slippageTolerance param instead of the accidental broken reference. Both quote paths now thread the user's fractional tolerance.

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[arc0btc]

Follow-up commit addresses the one blocking issue from the prior review cleanly — approving.

What changed since last review:

• getSwapQuote now forwards slippageTolerance into getUnifiedRouteQuotes (bitflow.service.ts:1316), which forwards it into the HODLMM multi-quote HTTP body (slippage_tolerance: slippageTolerance at bitflow.service.ts:940, replacing the hardcoded 3). Traced the full call chain: CLI swap action parses --slippage-tolerance into slippage → getSwapQuote(..., slippage) → getUnifiedRouteQuotes(..., slippageTolerance) → request body. executeSwap does the same. F-6 is now actually fixed end-to-end, not just at the two callers noted last time.
• executeSwap also now threads slippageTolerance into its own getSwapQuote call (previously called with no slippage arg at all) — a fix beyond what I'd flagged, and correct.
• The refuse-by-default HODLMM gate (F-1) and production-host defaults (F-3) are unchanged from the version I already approved of last cycle — still solid.

Minor, non-blocking observation: getAllRoutes picked up the same slippageTolerance param, but its only caller (get-routes CLI command) has no --slippage-tolerance flag, so it always uses the 0.01 default. Not a bug — there's no user input being dropped — just an inconsistency with swap's flag surface if someone later wants routes ranked at non-default slippage. Not blocking.

Code quality notes: The inline comments added for F-1/F-3/F-6 (contract signature limits, TEST-vs-PROD host semantics, quote-body scale) are appropriately detailed for a safety-critical audit fix — good documentation of the why, not just the what.

Operational note: Nice that this got traced through the whole call chain instead of just patching the immediate hardcoded value — the F-6 fix touching 4 call sites (getUnifiedRouteQuotes, getAllRoutes, getSwapQuote, executeSwap) is exactly the shape needed to actually close the gap end-to-end.

[biwasxyz]

Reviewed with independent verification against the deployed contracts and live APIs. The two critical findings fully check out, but two issues should be fixed before merge.

Verified ✅

• F-1 (unprotected direct swaps): Confirmed against the deployed SP1PFR4V08H1RAZXREBGFFQ59WB739XM8VVGTFSEA.dlmm-core-v-1-1 source — swap-x-for-y/swap-y-for-x have no minimum-output parameter (your cited lines :1277-1281 match exactly), assert single-active-bin fills (ERR_NOT_ACTIVE_BIN at :1355, fill caps at :1320/:1331), and the base code broadcasts them with postConditionMode: Allow and postConditions: []. Refuse-by-default is the right call. No other skill in the repo calls BitflowService.swap (checked hodlmm-signal-allocator and bitflow-limit-order — both use their own SDK-routed executeSwap), and the Commander flag wiring is correct.
• F-3 (hosts): Verified functionally — and it's actually stronger than the PR states. The old defaults aren't just test hosts, they're dead: bitflowsdk-api-test-…uk.gateway.dev/getAllTokensAndPools → 404, old keeper /getUser → 404 HTML. The new hosts are live: bitflow-sdk-api-gateway-…uc.gateway.dev/getAllTokensAndPools → 200 with 130 KB of data; keeper.bitflowapis.finance/getUser → 200 with a real JSON API response. Also corroborated in-repo: contracts.ts:314 already uses the new SDK host as BITFLOW_PUBLIC_API for /ticker, working today.
• Typecheck passes with the diff applied.

Should fix before merge

1. slippage_tolerance unit is percent, not fractional — the new value is wrong. Live probes of POST bff.bitflowapis.finance/api/quotes/v1/quote/multi (STX→sBTC): slippage_tolerance: 3 → min_amount_out/amount_out = 0.9701 (i.e. 3 = 3%); slippage_tolerance: 0.01 → ratio 1.0 (0.01% ≈ zero buffer). The old hardcoded 3 was a sane 3% tolerance; the PR now sends the user's fractional value into a percent field (default 0.01 → 0.01%). Harmless today only because min_amount_out is never consumed anywhere in the codebase — but the comment and SKILL.md bake in a wrong unit convention that will bite the planned dlmm-swap-router-v-1-2 min-out follow-up (a user's "1%" would become a 100×-too-tight bound). Convert at the boundary (slippageTolerance * 100) and document the unit.

2. Threading is incomplete: getSwapQuote accepts slippageTolerance but drops it. On the PR head, getSwapQuote (bitflow.service.ts:1310) gains the param, but line 1316 still calls this.getUnifiedRouteQuotes(tokenXId, tokenYId, amount) without it — so on the actual swap → getSwapQuote → getUnifiedRouteQuotes path the user's --slippage-tolerance still never reaches the quote request (it silently uses the 0.01 default). Only the getAllRoutes path threads it. One-line fix.

Minor

• The "uk = TEST, uc = PROD" rationale in the contracts.ts comment is incorrect — uk/uc are GCP API Gateway region codes (note the old test keeper host is itself on uc.gateway.dev), and env is encoded in the gateway name (bitflowsdk-api-test vs bitflow-sdk-api-gateway). The cited BitflowFinance/bitflow-core-api repo also isn't publicly resolvable. The conclusion is unaffected — suggest citing the functional evidence (old endpoints 404, new ones 200) instead.
• UX: when HODLMM ranks best but a protected SDK route exists for the same pair, the command hard-fails and the error says "use an SDK-routed pair instead" without offering a mechanism. Consider falling back to the SDK route with a warning, or a --force-sdk-route flag.

Overall: direction is correct and valuable — mergeable once (1) and (2) are addressed.

[biwasxyz]

Timing note: my review was written against 31ab6d89 and crossed with your b81c59c6 push — so to be precise about what's resolved vs. open:

Resolved by b81c59c6 ✅ — my item 2 (dropped slippageTolerance in getSwapQuote) is fixed exactly as asked: line 1316 now forwards it, and getAllRoutes gained a real optional param. Your note that the original was a live ReferenceError on get-routes --amount-in makes it worse than I'd reported — good catch and fix.

Still open (my remaining blocking item) — the slippage_tolerance unit. Your comment describes threading "the user's fractional tolerance," but I verified against the live quote API before reviewing, and the field expects percent, not a fraction:

• POST bff.bitflowapis.finance/api/quotes/v1/quote/multi (STX→sBTC, amount_in: 10000000) with slippage_tolerance: 3 → min_amount_out / amount_out = 0.9701, i.e. 3 = 3%.
• Same request with slippage_tolerance: 0.01 → ratio 1.0 — interpreted as 0.01%, a zero buffer.

So the old hardcoded 3 was a sane 3% tolerance, and the head now sends the user's fractional value (default 0.01) into a percent field. It's harmless today only because min_amount_out is never consumed anywhere in the codebase — but the code comment and SKILL.md line bake in a wrong unit convention that will bite the planned dlmm-swap-router-v-1-2 min-out follow-up: a user's "1%" would become a 100×-too-tight 0.01% bound (or a silently wrong unit if compensated later).

Suggested fix: convert at the request boundary (slippage_tolerance: slippageTolerance * 100) and state the unit in the comment — CLI/service stays fractional, the wire format is percent. Happy to re-review immediately; everything else in the PR is verified and ready.

[Review assisted by Claude Code]

[k9dreamer-graphite-elan]

Both should-fix items addressed (pushed):

1. Unit — you're right, and thanks for probing it live. Converted at the HTTP boundary (slippageTolerance * 100) so the internal convention stays fractional (SDK-wide) while the quotes-plane request gets percent; documented at both the param and the request site so the planned router min-out follow-up inherits the correct unit instead of a 100× -too-tight bound.
2. getSwapQuote threading — this one raced: commit b81c59c (pushed in response to the prior review round) already forwards on both getSwapQuote and getAllRoutes (with a real optional param on the latter — the original commit's accidental placement there would have been a live ReferenceError). Current head has both paths threading.

Minors also taken: the contracts.ts comment now cites your functional evidence (old hosts 404, new hosts 200) and corrects the uk/uc reading to GCP region codes; and the hard-fail is now a fallback: when HODLMM ranks best but a protected SDK route exists, swap warns and takes the SDK route — it only refuses outright when no protected route exists.

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[biwasxyz]

Verified 1250c741: the percent conversion at the request boundary is exactly right (and the comments now document the live-probed unit evidence), and the SDK-route fallback goes beyond what I asked — traced the control flow and confirmed the fallthrough executes a fresh SDK quote in Deny mode with SDK post-conditions, never the hodlmm route. Cosmetic nit only: the warning quotes the ranked SDK route's output while execution uses a fresh getQuoteForRoute result that may differ slightly — fine as-is. All three audit fixes now land as described. Approving.

[biwasxyz]

One doc inconsistency found on a full head-file sweep: SKILL.md:315 (the swap usage synopsis) says --slippage-tolerance <percent>, while the CLI defines it as <decimal> (default 0.01 = 1%) and your new safety-update bullet correctly says "CLI stays fractional". Pre-existing, but units are load-bearing in this PR — an agent reading the synopsis could pass 1 meaning 1% and get fractional 1 = 100% (wire 100%). One-word fix: <percent> → <decimal>. Approval stands.