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Feat/add morphtx#142
MarvelFisher wants to merge 4 commits intomainfrom
feat/add_morphtx

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@MarvelFisher MarvelFisher commented Apr 1, 2026

Summary by CodeRabbit

  • Documentation
    • Added a comprehensive MorphTx technical specification covering typed transaction formats, version behavior, activation rules, fee mechanics, reference indexing, RPC mappings, and SDK guidance.
    • Added a developer-facing MorphTx guide with encoding, signing, validation rules, examples, and integration notes.
    • Reorganized navigation to group MorphTx materials and updated a document title from “AltFeeTx Technical Specification” to “Alternative Fee”.

@MarvelFisher MarvelFisher requested a review from a team as a code owner April 1, 2026 07:50
@MarvelFisher MarvelFisher requested review from Web3Jumb0 and removed request for a team April 1, 2026 07:50
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coderabbitai bot commented Apr 1, 2026

📝 Walkthrough

Walkthrough

Documentation updates: renamed AltFeeTx front-matter title, added two new MorphTx specification/developer docs defining the EIP-2718 0x7F typed transaction (V0/V1, Alt Fee, Reference/Memo, wire/signing rules), and reorganized the GetStarted sidebar to nest AltFeeTx under a new "MorphTx Technical Specification" category.

Changes

Cohort / File(s) Summary
AltFeeTx metadata
docs/about-morph/10-altfeetx.md
Front-matter title changed from "AltFeeTx Technical Specification" to "Alternative Fee".
MorphTx specification docs
docs/about-morph/11-morphtx.md, docs/about-morph/12-morphtx-developer.md
Added comprehensive MorphTx spec and developer guide: defines EIP-2718 0x7F typed transaction, V0/V1 wire formats, Alt Fee token-denominated gas semantics, Reference/Memo fields and index, signing-hash formulas, RPC mappings (eth and morph), fork activation rules (Emerald/Jade), receipt/index storage details, validation/error cases, and SDK guidance.
Sidebar update
sidebars.js
Replaced flat about-morph/altfeetx entry with a "MorphTx Technical Specification" category linking to about-morph/morphtx and containing about-morph/altfeetx as a child (collapsed: false).

Sequence Diagram(s)

(omitted)

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

Possibly related PRs

Suggested reviewers

  • Web3Jumb0
  • twcctop

Poem

🐰 I hopped through docs with ears held high,
A MorphTx seed beneath the sky,
Titles shifted, references stored,
Sidebars nested, pages poured,
I nibble bytes and give a tiny sigh.

🚥 Pre-merge checks | ✅ 3
✅ Passed checks (3 passed)
Check name Status Explanation
Description Check ✅ Passed Check skipped - CodeRabbit’s high-level summary is enabled.
Title check ✅ Passed The title 'Feat/add morphtx' is related to the main change, which introduces MorphTx technical documentation with new spec pages and sidebar updates.
Docstring Coverage ✅ Passed No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

✏️ Tip: You can configure your own custom pre-merge checks in the settings.

✨ Finishing Touches
🧪 Generate unit tests (beta)
  • Create PR with unit tests
  • Commit unit tests in branch feat/add_morphtx

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Actionable comments posted: 2

🤖 Prompt for all review comments with AI agents
Verify each finding against the current code and only fix it if needed.

Inline comments:
In `@docs/about-morph/11-morphtx.md`:
- Around line 282-284: The V0 detection rule is contradictory: the condition
"firstByte >= 0xC0 or firstByte == 0x00" conflicts with the later statement that
V0 starts with an RLP list byte (>= 0xC0). Update the doc so the V0 rule only
classifies RLP list prefixes (firstByte >= 0xC0) as V0 and remove the "firstByte
== 0x00" clause (or explicitly mark 0x00 as invalid/handled separately), and
make the same correction for the corresponding lines referenced around the
second occurrence (lines ~294-295) so both descriptions match and third-party
decoders are not misled.
- Line 127: Several fenced code blocks in the file are missing language
identifiers (triggering markdownlint MD040); update each triple-backtick fence
(``` ) throughout the document to include the appropriate language label (for
example ```js, ```bash, ```json, ```text) that matches the block content so
rendering/tooling and static analysis pass; target every missing-fence instance
called out in the review and ensure each fence uses a correct language token
rather than a bare ``` to resolve MD040.
🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

  • Push a commit to this branch (recommended)
  • Create a new PR with the fixes

ℹ️ Review info
⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: b3968986-b575-4441-b384-d831f5472383

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Reviewing files that changed from the base of the PR and between 3959b53 and 80fac6b.

⛔ Files ignored due to path filters (1)
  • pnpm-lock.yaml is excluded by !**/pnpm-lock.yaml
📒 Files selected for processing (3)
  • docs/about-morph/10-altfeetx.md
  • docs/about-morph/11-morphtx.md
  • sidebars.js

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Actionable comments posted: 3

🧹 Nitpick comments (1)
docs/about-morph/12-morphtx-developer.md (1)

127-127: Add language identifiers to fenced code blocks (MD040).

Multiple fences are unlabeled. Add explicit languages (for example text, go, json, python) to satisfy markdownlint and improve rendering/tooling.

Also applies to: 192-192, 223-223, 247-247, 279-279, 300-300, 315-315, 332-332, 367-367, 376-376, 410-410, 475-475, 629-629, 852-852, 860-860, 1001-1001, 1038-1038, 1058-1058, 1075-1075, 1089-1089

🤖 Prompt for AI Agents
Verify each finding against the current code and only fix it if needed.

In `@docs/about-morph/12-morphtx-developer.md` at line 127, Several fenced code
blocks use bare triple backticks (```) without language identifiers; update each
unlabeled fence (the ``` markers) to include an appropriate language tag (e.g.,
```text, ```json, ```go, ```python) so markdownlint MD040 is satisfied and
tooling renders correctly; apply this change to every unlabeled fence throughout
the document (replace each ``` with ```<language> matching the block content).
🤖 Prompt for all review comments with AI agents
Verify each finding against the current code and only fix it if needed.

Inline comments:
In `@docs/about-morph/11-morphtx.md`:
- Around line 508-509: The receipt example currently shows V1-only fields
(`version`, `reference`, `memo`) while the shown transaction is V0; either
remove `version`, `reference`, and `memo` from the V0-shaped receipt JSON or
change the example to a V1 transaction (e.g., set `"version": "0x1"`) so the
fields match the documented visibility rules; apply the same fix to the other
examples referenced (the blocks around the second and third occurrences) and
ensure examples and surrounding text remain consistent with the `omitempty` V1+
rule.

In `@docs/about-morph/12-morphtx-developer.md`:
- Around line 282-284: The docs incorrectly classify firstByte == 0x00 as V0
despite stating V0 is an RLP list prefix (firstByte >= 0xC0); update the
algorithm text so the V0 branch only includes firstByte >= 0xC0 (and not 0x00)
wherever the rule appears (e.g., the lines mentioning "if firstByte >= 0xC0 or
firstByte == 0x00" and the repeated occurrence at 294-295), and clarify that
firstByte == 0x00 is handled by the V1/zero-byte rule instead to avoid
contradicting the RLP list-prefix definition.
- Around line 508-509: The example receipts in
docs/about-morph/12-morphtx-developer.md are inconsistent with the stated field
visibility: V0 transactions should only show feeTokenID and feeLimit, while
version/reference/memo are V1+; update the sample JSON blocks (the ones showing
"version": "0x0" and reference/memo: null) to be consistent by either changing
"version" to a V1 value and keeping reference/memo fields populated, or by
removing the reference and memo fields (and keeping version as 0x0) so V0 only
shows feeTokenID and feeLimit; ensure all other instances mentioned (the other
sample blocks around the same sections) are updated similarly so version,
reference, and memo only appear for V1+ examples.

---

Nitpick comments:
In `@docs/about-morph/12-morphtx-developer.md`:
- Line 127: Several fenced code blocks use bare triple backticks (```) without
language identifiers; update each unlabeled fence (the ``` markers) to include
an appropriate language tag (e.g., ```text, ```json, ```go, ```python) so
markdownlint MD040 is satisfied and tooling renders correctly; apply this change
to every unlabeled fence throughout the document (replace each ``` with
```<language> matching the block content).
🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

  • Push a commit to this branch (recommended)
  • Create a new PR with the fixes

ℹ️ Review info
⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: e14027b7-430d-4f3f-93ad-ba6b839fc467

📥 Commits

Reviewing files that changed from the base of the PR and between 80fac6b and 3e2d378.

📒 Files selected for processing (2)
  • docs/about-morph/11-morphtx.md
  • docs/about-morph/12-morphtx-developer.md

Comment on lines +282 to +284
if firstByte >= 0xC0 or firstByte == 0x00:
→ V0 format (first byte is RLP list prefix)
→ Decode entire payload as RLP list
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⚠️ Potential issue | 🟠 Major

Fix conflicting V0 decode rule.

The algorithm classifies firstByte == 0x00 as V0, but the rationale says V0 is an RLP list prefix (>= 0xC0). This contradiction can break third-party decoders.

Suggested doc fix
-if firstByte >= 0xC0 or firstByte == 0x00:
+if firstByte >= 0xC0:
     → V0 format (first byte is RLP list prefix)
     → Decode entire payload as RLP list

Also applies to: 294-295

🤖 Prompt for AI Agents
Verify each finding against the current code and only fix it if needed.

In `@docs/about-morph/12-morphtx-developer.md` around lines 282 - 284, The docs
incorrectly classify firstByte == 0x00 as V0 despite stating V0 is an RLP list
prefix (firstByte >= 0xC0); update the algorithm text so the V0 branch only
includes firstByte >= 0xC0 (and not 0x00) wherever the rule appears (e.g., the
lines mentioning "if firstByte >= 0xC0 or firstByte == 0x00" and the repeated
occurrence at 294-295), and clarify that firstByte == 0x00 is handled by the
V1/zero-byte rule instead to avoid contradicting the RLP list-prefix definition.

Comment on lines +508 to +509
> Note: `version`, `reference`, `memo` fields only appear for V1+ transactions (`omitempty`). V0 transactions only return `feeTokenID` and `feeLimit`.

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⚠️ Potential issue | 🟡 Minor

Align receipt examples with V1+ field visibility.

The sample receipt shows "version": "0x0" with reference/memo: null, but the text/table says these fields are V1+ only. Please make the example consistent (either V1 values or omit those fields for V0).

Also applies to: 514-523, 934-937

🤖 Prompt for AI Agents
Verify each finding against the current code and only fix it if needed.

In `@docs/about-morph/12-morphtx-developer.md` around lines 508 - 509, The example
receipts in docs/about-morph/12-morphtx-developer.md are inconsistent with the
stated field visibility: V0 transactions should only show feeTokenID and
feeLimit, while version/reference/memo are V1+; update the sample JSON blocks
(the ones showing "version": "0x0" and reference/memo: null) to be consistent by
either changing "version" to a V1 value and keeping reference/memo fields
populated, or by removing the reference and memo fields (and keeping version as
0x0) so V0 only shows feeTokenID and feeLimit; ensure all other instances
mentioned (the other sample blocks around the same sections) are updated
similarly so version, reference, and memo only appear for V1+ examples.

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♻️ Duplicate comments (13)
docs/about-morph/11-morphtx.md (13)

696-701: ⚠️ Potential issue | 🟡 Minor

Add language identifier to V0 signing hash formula.

The V0 signing hash specification lacks a language identifier (MD040). Add text or pseudocode for consistency.

📝 Proposed fix
-```
+```text
 sigHash = keccak256(0x7F || rlp([
     chainID, nonce, gasTipCap, gasFeeCap, gas, to, value, data,
     accessList, feeTokenID, feeLimit
 ]))
🤖 Prompt for AI Agents
Verify each finding against the current code and only fix it if needed.

In `@docs/about-morph/11-morphtx.md` around lines 696 - 701, The V0 signing hash
block is missing a language identifier for the fenced code, so update the code
fence containing the V0 signing hash (the sigHash = keccak256(0x7F || rlp([ ...
])) formula) to include a language tag such as text or pseudocode (e.g., ```text
or ```pseudocode) so the snippet is correctly labeled; locate the fenced block
showing sigHash, keccak256, rlp and add the chosen identifier to the opening
backticks.

601-609: ⚠️ Potential issue | 🟡 Minor

Add language identifier to V0 encoding specification.

The V0 encoding format block lacks a language identifier (MD040). Add text for consistency.

📝 Proposed fix
-```
+```text
 Format: 0x7F || RLP([14 fields])
🤖 Prompt for AI Agents
Verify each finding against the current code and only fix it if needed.

In `@docs/about-morph/11-morphtx.md` around lines 601 - 609, The code block that
documents the V0 encoding ("Format: 0x7F || RLP([14 fields])" and the field
list) is missing a language identifier; update the fenced code block to use a
"text" language tag (i.e., change the opening ``` to ```text) so the V0 encoding
block is annotated as plain text; locate the block containing the exact string
"Format: 0x7F || RLP([14 fields])" to make this change.

704-709: ⚠️ Potential issue | 🟡 Minor

Add language identifier to V1 signing hash formula.

The V1 signing hash specification lacks a language identifier (MD040). Add text or pseudocode for consistency.

📝 Proposed fix
-```
+```text
 sigHash = keccak256(0x7F || rlp([
     chainID, nonce, gasTipCap, gasFeeCap, gas, to, value, data,
     accessList, feeTokenID, feeLimit, version, reference, memo
 ]))
🤖 Prompt for AI Agents
Verify each finding against the current code and only fix it if needed.

In `@docs/about-morph/11-morphtx.md` around lines 704 - 709, The code block
showing the V1 signing hash formula is missing a fenced code language
identifier; update the fenced block that contains "sigHash = keccak256(0x7F ||
rlp([ ... ]))" to include a language tag such as "text" or "pseudocode" (e.g.,
change the opening ``` to ```text) so the snippet is flagged correctly; locate
the block containing the symbols sigHash, keccak256, and rlp and add the
identifier to the opening fence.

615-623: ⚠️ Potential issue | 🟡 Minor

Add language identifier to V1 encoding specification.

The V1 encoding format block lacks a language identifier (MD040). Add text for consistency.

📝 Proposed fix
-```
+```text
 Format: 0x7F || 0x01 || RLP([16 fields])
🤖 Prompt for AI Agents
Verify each finding against the current code and only fix it if needed.

In `@docs/about-morph/11-morphtx.md` around lines 615 - 623, The fenced code block
that describes the V1 encoding ("Format: 0x7F || 0x01 || RLP([16 fields])" and
the following Field order list) is missing a language identifier; update that
code fence to use ```text (i.e., change the opening triple backticks to ```text)
so the V1 encoding block includes the language identifier and matches the
project's markdown linting rules.

648-665: ⚠️ Potential issue | 🟡 Minor

Add language identifier to encoding/decoding paths diagram.

The encoding/decoding paths diagram lacks a language identifier (MD040). Add text for consistency.

📝 Proposed fix
-```
+```text
 Encoding:
   Transaction.MarshalBinary() → encodeTyped(buf)
🤖 Prompt for AI Agents
Verify each finding against the current code and only fix it if needed.

In `@docs/about-morph/11-morphtx.md` around lines 648 - 665, The fenced diagram
block showing the Encoding/Decoding paths (which includes lines like
Transaction.MarshalBinary(), encodeTyped(buf), MorphTx.encode(buf),
Transaction.UnmarshalBinary(bytes), MorphTx.decode(bytes[1:]), and
MorphTx.EncodeRLP/DecodeRLP) is missing a language identifier; update the
opening triple-backtick for that diagram to ```text so the block is explicitly
marked as plain text (i.e., replace ``` with ```text at the start of the
diagram).

139-148: ⚠️ Potential issue | 🟡 Minor

Add language identifier to the Reference generation examples.

The code block showing Reference generation patterns lacks a language identifier (MD040). Add solidity, javascript, or text depending on the intended syntax.

📝 Proposed fix
-```
+```solidity
 // Hash an order ID
 reference = keccak256("order-2026-03-30-00142")
🤖 Prompt for AI Agents
Verify each finding against the current code and only fix it if needed.

In `@docs/about-morph/11-morphtx.md` around lines 139 - 148, The fenced code block
showing Reference generation examples is missing a language identifier; update
the triple-backtick fence to include a language (e.g., solidity) so syntax
highlighting/linting passes (apply to the block containing
keccak256("order-2026-03-30-00142"), bytes32(uuid), and
keccak256(abi.encodePacked(merchantId, sessionId)) — add ```solidity before the
block and close with ``` after).

669-672: ⚠️ Potential issue | 🟡 Minor

Add language identifier to transaction hash formulas.

The transaction hash formulas lack a language identifier (MD040). Add text for proper rendering.

📝 Proposed fix
-```
+```text
 V0: keccak256(0x7F || RLP([14 fields including V,R,S]))
 V1: keccak256(0x7F || 0x01 || RLP([16 fields including V,R,S]))
🤖 Prompt for AI Agents
Verify each finding against the current code and only fix it if needed.

In `@docs/about-morph/11-morphtx.md` around lines 669 - 672, The fenced code block
showing the transaction hash formulas for V0 and V1 is missing a language
identifier; update the code fence that contains "V0: keccak256(0x7F || RLP([14
fields including V,R,S]))" and "V1: keccak256(0x7F || 0x01 || RLP([16 fields
including V,R,S]))" to include the text language identifier (i.e., change the
opening ``` to ```text) so the formulas render correctly.

631-642: ⚠️ Potential issue | 🟡 Minor

Add language identifier to version detection pseudocode.

The version detection algorithm lacks a language identifier (MD040). Add python, text, or pseudocode for proper rendering.

📝 Proposed fix
-```
+```python
 firstByte = inner_payload[0]
🤖 Prompt for AI Agents
Verify each finding against the current code and only fix it if needed.

In `@docs/about-morph/11-morphtx.md` around lines 631 - 642, The fenced code block
showing the version detection pseudocode (the snippet starting with "firstByte =
inner_payload[0]" and the following if/elif/else) needs a language identifier
for proper rendering; update the opening triple-backtick to include a language
tag (e.g., ```python) so the block becomes a Python code fence.

570-597: ⚠️ Potential issue | 🟡 Minor

Add language identifier to wire format diagram.

The wire format ASCII diagram lacks a language identifier (MD040). Add text for proper rendering.

📝 Proposed fix
-```
+```text
 ┌─────────────────────────────────────────────────────────┐
 │  Full wire format (MarshalBinary output)                │
🤖 Prompt for AI Agents
Verify each finding against the current code and only fix it if needed.

In `@docs/about-morph/11-morphtx.md` around lines 570 - 597, The fenced ASCII
diagram block in the docs (the code block showing "Full wire format
(MarshalBinary output)" with the box/lines) is missing a language identifier;
update the opening ``` fence to ```text so the diagram renders correctly—find
the code fence that begins the diagram (the triple-backtick before
"┌─────────────────────────────────────────────────────────┐") and change it to
include the text language tag.

715-725: ⚠️ Potential issue | 🟡 Minor

Add language identifier to signing flow diagram.

The signing flow diagram lacks a language identifier (MD040). Add text for proper rendering.

📝 Proposed fix
-```
+```text
 types.SignTx(tx, signer, privateKey)
   ├→ h = signer.Hash(tx)
🤖 Prompt for AI Agents
Verify each finding against the current code and only fix it if needed.

In `@docs/about-morph/11-morphtx.md` around lines 715 - 725, The code block
containing the signing flow diagram needs a language identifier so the markdown
linter renders it correctly; update the fenced block that starts with the triple
backticks before the diagram (which shows types.SignTx(tx, signer, privateKey),
signer.Hash(tx), MorphTx.sigHash(chainID), crypto.Sign, and tx.WithSignature) to
use a language tag of "text" (i.e., change ``` to ```text) so the diagram is
treated as plain text.

102-104: ⚠️ Potential issue | 🟡 Minor

Add language identifier to the formula code block.

The formula block lacks a language identifier, triggering markdownlint MD040. Add text or math to improve rendering consistency.

📝 Proposed fix
-```
+```text
 tokenAmount = ⌈(ethAmount × tokenScale) / tokenRate⌉
</details>

<details>
<summary>🤖 Prompt for AI Agents</summary>

Verify each finding against the current code and only fix it if needed.

In @docs/about-morph/11-morphtx.md around lines 102 - 104, The fenced formula
block containing tokenAmount = ⌈(ethAmount × tokenScale) / tokenRate⌉ is missing
a language identifier; update the code fence to include a language tag (e.g.,
add text or math before the line) so the block becomes a fenced code block
with a language identifier and improves markdownlint MD040 compliance and
rendering consistency.


</details>

---

`459-473`: _⚠️ Potential issue_ | _🟡 Minor_

**Add language identifier to the timeline diagram.**

The ASCII timeline diagram lacks a language identifier, triggering MD040. Add `text` to ensure proper rendering.



<details>
<summary>📝 Proposed fix</summary>

```diff
-```
+```text
 Timeline ──────────────────────────────────────────────────────────►
```
</details>

<details>
<summary>🤖 Prompt for AI Agents</summary>

Verify each finding against the current code and only fix it if needed.

In @docs/about-morph/11-morphtx.md around lines 459 - 473, The fenced code block
that renders the ASCII timeline (the block starting with and the line "Timeline ──────────────────────────────────────────────────────────►") is missing a language identifier; update the opening fence totext so the
diagram is explicitly marked as plain text (modify the triple-backtick that
precedes the "Timeline ..." line in the 11-morphtx.md block containing the ASCII
diagram).


</details>

---

`634-635`: _⚠️ Potential issue_ | _🟠 Major_

**V0 version-detection rule contradicts its documentation across multiple files.**

Line 634 in `docs/about-morph/11-morphtx.md` and line 282 in `docs/about-morph/12-morphtx-developer.md` both contain `if firstByte >= 0xC0 or firstByte == 0x00:` with the comment "V0 (first byte is RLP list prefix)". This is contradictory: RLP list prefixes are `>= 0xC0`, but `0x00` is not a valid RLP list prefix—it encodes a single zero byte. Either clarify why `0x00` is treated as V0, or remove it from the condition.

<details>
<summary>Proposed fix</summary>

```diff
-if firstByte >= 0xC0 or firstByte == 0x00:
+if firstByte >= 0xC0:
     → V0 (first byte is RLP list prefix)
```
</details>

<details>
<summary>🤖 Prompt for AI Agents</summary>

```
Verify each finding against the current code and only fix it if needed.

In `@docs/about-morph/11-morphtx.md` around lines 634 - 635, The V0 detection
conditional `if firstByte >= 0xC0 or firstByte == 0x00:` is inconsistent with
RLP semantics (0x00 is not a list prefix); update the rule in both
`11-morphtx.md` and `12-morphtx-developer.md` by either removing the `or
firstByte == 0x00` clause or adding a brief clarifying sentence explaining why a
lone 0x00 should be treated as V0, and ensure the comment “V0 (first byte is RLP
list prefix)” matches the changed logic and references the same rationale.
```

</details>

</blockquote></details>

</blockquote></details>

<details>
<summary>🤖 Prompt for all review comments with AI agents</summary>

Verify each finding against the current code and only fix it if needed.

Duplicate comments:
In @docs/about-morph/11-morphtx.md:

  • Around line 696-701: The V0 signing hash block is missing a language
    identifier for the fenced code, so update the code fence containing the V0
    signing hash (the sigHash = keccak256(0x7F || rlp([ ... ])) formula) to include
    a language tag such as text or pseudocode (e.g., text or pseudocode) so
    the snippet is correctly labeled; locate the fenced block showing sigHash,
    keccak256, rlp and add the chosen identifier to the opening backticks.
  • Around line 601-609: The code block that documents the V0 encoding ("Format:
    0x7F || RLP([14 fields])" and the field list) is missing a language identifier;
    update the fenced code block to use a "text" language tag (i.e., change the
    opening totext) so the V0 encoding block is annotated as plain text;
    locate the block containing the exact string "Format: 0x7F || RLP([14 fields])"
    to make this change.
  • Around line 704-709: The code block showing the V1 signing hash formula is
    missing a fenced code language identifier; update the fenced block that contains
    "sigHash = keccak256(0x7F || rlp([ ... ]))" to include a language tag such as
    "text" or "pseudocode" (e.g., change the opening totext) so the snippet
    is flagged correctly; locate the block containing the symbols sigHash,
    keccak256, and rlp and add the identifier to the opening fence.
  • Around line 615-623: The fenced code block that describes the V1 encoding
    ("Format: 0x7F || 0x01 || RLP([16 fields])" and the following Field order list)
    is missing a language identifier; update that code fence to use text (i.e., change the opening triple backticks to text) so the V1 encoding block
    includes the language identifier and matches the project's markdown linting
    rules.
  • Around line 648-665: The fenced diagram block showing the Encoding/Decoding
    paths (which includes lines like Transaction.MarshalBinary(), encodeTyped(buf),
    MorphTx.encode(buf), Transaction.UnmarshalBinary(bytes),
    MorphTx.decode(bytes[1:]), and MorphTx.EncodeRLP/DecodeRLP) is missing a
    language identifier; update the opening triple-backtick for that diagram to
    text so the block is explicitly marked as plain text (i.e., replace with
- Around line 139-148: The fenced code block showing Reference generation
examples is missing a language identifier; update the triple-backtick fence to
include a language (e.g., solidity) so syntax highlighting/linting passes (apply
to the block containing keccak256("order-2026-03-30-00142"), bytes32(uuid), and
keccak256(abi.encodePacked(merchantId, sessionId)) — add ```solidity before the
block and close with ``` after).
- Around line 669-672: The fenced code block showing the transaction hash
formulas for V0 and V1 is missing a language identifier; update the code fence
that contains "V0: keccak256(0x7F || RLP([14 fields including V,R,S]))" and "V1:
keccak256(0x7F || 0x01 || RLP([16 fields including V,R,S]))" to include the text
language identifier (i.e., change the opening ``` to ```text) so the formulas
render correctly.
- Around line 631-642: The fenced code block showing the version detection
pseudocode (the snippet starting with "firstByte = inner_payload[0]" and the
following if/elif/else) needs a language identifier for proper rendering; update
the opening triple-backtick to include a language tag (e.g., ```python) so the
block becomes a Python code fence.
- Around line 570-597: The fenced ASCII diagram block in the docs (the code
block showing "Full wire format (MarshalBinary output)" with the box/lines) is
missing a language identifier; update the opening ``` fence to ```text so the
diagram renders correctly—find the code fence that begins the diagram (the
triple-backtick before
"┌─────────────────────────────────────────────────────────┐") and change it to
include the text language tag.
- Around line 715-725: The code block containing the signing flow diagram needs
a language identifier so the markdown linter renders it correctly; update the
fenced block that starts with the triple backticks before the diagram (which
shows types.SignTx(tx, signer, privateKey), signer.Hash(tx),
MorphTx.sigHash(chainID), crypto.Sign, and tx.WithSignature) to use a language
tag of "text" (i.e., change ``` to ```text) so the diagram is treated as plain
text.
- Around line 102-104: The fenced formula block containing tokenAmount =
⌈(ethAmount × tokenScale) / tokenRate⌉ is missing a language identifier; update
the code fence to include a language tag (e.g., add ```text or ```math before
the line) so the block becomes a fenced code block with a language identifier
and improves markdownlint MD040 compliance and rendering consistency.
- Around line 459-473: The fenced code block that renders the ASCII timeline
(the block starting with ``` and the line "Timeline
──────────────────────────────────────────────────────────►") is missing a
language identifier; update the opening fence to ```text so the diagram is
explicitly marked as plain text (modify the triple-backtick that precedes the
"Timeline ..." line in the 11-morphtx.md block containing the ASCII diagram).
- Around line 634-635: The V0 detection conditional `if firstByte >= 0xC0 or
firstByte == 0x00:` is inconsistent with RLP semantics (0x00 is not a list
prefix); update the rule in both `11-morphtx.md` and `12-morphtx-developer.md`
by either removing the `or firstByte == 0x00` clause or adding a brief
clarifying sentence explaining why a lone 0x00 should be treated as V0, and
ensure the comment “V0 (first byte is RLP list prefix)” matches the changed
logic and references the same rationale.

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Reviewing files that changed from the base of the PR and between 3e2d378 and 1902eda.

📒 Files selected for processing (1)
  • docs/about-morph/11-morphtx.md

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