| name | midnight-status-codes:status-codes-lookup |
| description | Fast script-based lookup of Midnight error codes, status codes, and error types across all ecosystem components. Supports exact code lookup, regex search, source filtering, and category browsing. Use when you need to quickly identify what an error code means without reading full reference files. |
Midnight Status Code Lookup
A script-based tool for fast error code identification across the Midnight ecosystem.
Script Location
${CLAUDE_SKILL_DIR}/scripts/lookup.sh
The script requires jq to be installed. It reads codes.json from the same directory.
Modes
Exact Code Lookup
Find a specific error by its code number, error name, or known alias:
bash ${CLAUDE_SKILL_DIR}/scripts/lookup.sh --code 166
bash ${CLAUDE_SKILL_DIR}/scripts/lookup.sh --code ContractRuntimeError
bash ${CLAUDE_SKILL_DIR}/scripts/lookup.sh --code "InvalidTransaction::Custom(166)"
Matching is case-insensitive. Searches across code, name, and aliases fields.
Regex Search
Search across names, descriptions, aliases, codes, and categories using a regex pattern:
bash ${CLAUDE_SKILL_DIR}/scripts/lookup.sh --search "network.*id"
bash ${CLAUDE_SKILL_DIR}/scripts/lookup.sh --search "insufficient"
bash ${CLAUDE_SKILL_DIR}/scripts/lookup.sh --search "dust.*spend"
If 5 or fewer results match, each is shown in full detail. If more than 5 match, results are shown as a compact table.
List by Source
List all error codes emitted by a specific component:
bash ${CLAUDE_SKILL_DIR}/scripts/lookup.sh --source midnight-node
bash ${CLAUDE_SKILL_DIR}/scripts/lookup.sh --source compact-compiler
Available sources: compact-compiler, compact-js-sdk, compact-runtime, dapp-connector, jsonrpc-2.0, midnight-indexer, midnight-js, midnight-node, midnight-wallet, partner-chains, proof-server, substrate.
List All Sources
Show all available sources with entry counts:
bash ${CLAUDE_SKILL_DIR}/scripts/lookup.sh --sources
List by Category
List all error codes in a specific category:
bash ${CLAUDE_SKILL_DIR}/scripts/lookup.sh --category transaction-malformed
bash ${CLAUDE_SKILL_DIR}/scripts/lookup.sh --category deserialization
Output Format
Detailed Match (from --code or --search with ≤5 results)
=== MATCH: <source> / <code> ===
Code: <code>
Name: <name>
Source: <source>
Phase: <pipeline phase> # compact-compiler entries only
ID: <stable slug>
Category: <group name>
Category Description: <group description>
Severity: <error|warning|info>
Status: <retired> # only present when status == "retired"
Superseded by: <codes> # only present when superseded_by is non-empty
Class: <Error|TypeError|TaggedError:*> # only present on SDK/JS entries with a class field
Description: <what this error means>
Fixes:
- <actionable fix suggestion>
- <another suggestion>
Aliases: <comma-separated alternative names>
See Also: <related codes>
Verified: <repo>@<ref> · anchor: <file:line>
Reference: <plugin-relative path>#<heading-slug>
--- Begin reference section ---
<resolved anchor body from the referenced markdown file>
--- End reference section ---
===
The reference body between the --- Begin reference section --- and --- End reference section --- markers is resolved mechanically by resolve-anchor.sh: the script locates the heading whose slug matches the URL fragment in reference_anchor and copies the bytes from that heading down to (but not including) the next heading at the same or shallower depth. There is no LLM summarisation in this path. If the anchor cannot be resolved, lookup output prints Reference: BROKEN (or (anchor resolution failed: <reason>) inside the section block) instead of silently producing prose -- treat that as a data bug to fix in codes.json, not as an answer.
Compact Table (from --source, --category, or --search with >5 results)
=== SOURCE: <name> (<N> entries) ===
Code | Name | Category | Severity
---- | ---- | -------- | --------
166 | InvalidNetworkId | transaction-malformed | error
...
===
Interpreting Results
- Source tells you which component emitted the error. This determines where to investigate.
- Category groups related errors. The Category Description explains what all errors in that group have in common.
- Fixes are ordered by likelihood -- try the first suggestion first.
- Aliases are alternative names the same error is known by in different contexts (e.g., the Rust path vs. the Substrate encoding).
- See Also points to related errors that often co-occur or share root causes.
- Severity:
error = must be resolved, warning = should investigate, info = informational status.
- Status: retired means the code is no longer emitted by current source but older deployed components may still surface it; the linked
Superseded by codes are the current replacements and are the right targets for new error handling.
- Class appears only for JavaScript/TypeScript SDK entries.
null or absence means the throw site uses a bare Error / TypeError with no class identity, so message-substring matching is the only way to disambiguate.
Phase axis (compact-compiler entries)
Compact-compiler entries carry an additional phase field naming the pipeline stage that produced the diagnostic. Phases narrow investigation to a small set of upstream source files in LFDT-Minokawa/compact:
| Phase | Source files | Examples |
|---|
lexer | compiler/lexer.ss | unexpected EOF, invalid leading zero |
parser | compiler/parser.ss | parse error, unrecognized pragma |
frontend | compiler/frontend-passes.ss | include cycle, return in for |
name-res | compiler/analysis-passes.ss (early) | unbound identifier, no such export |
type-check | compiler/analysis-passes.ss, circuit-passes.ss | branch type mismatch, no compatible function |
witness | compiler/analysis-passes.ss | undeclared witness disclosure |
purity | compiler/analysis-passes.ss | exported circuit modifies sealed field |
zkir | compiler/zkir-passes.ss, zkir-v3-passes.ss, passes.ss | cross-contract not supported, ZKIR non-zero exit |
exit | compiler/program-common.ss | exit:0 / exit:1 / exit:254 / exit:255 |
runtime | runtime/src/error.ts | failed assert, version mismatch |
external | various | malformed contract-info file, source-file I/O |
Diagnostics from other components do not use phase.
Coverage audit
audit-compiler-coverage.sh is the regression guard for compiler bumps. It walks the upstream compiler tree pinned to verified_against.ref (currently compactc-v0.31.0), extracts every diagnostic template the compiler can emit, and reports any template that is not covered by some entry's code/aliases and not explicitly waived in coverage-allowlist.txt.
Run it with:
bash ${CLAUDE_SKILL_DIR}/scripts/audit-compiler-coverage.sh
The script clones the upstream compiler into /tmp/compact-stable-<ref> if no local clone is present, so the first run on a fresh machine takes longer. The expected future bump workflow is: bump verified_against.ref on a representative compiler entry, re-run the audit, then hand-curate the delta of newly-uncovered templates into fresh entries (or onto the allowlist with justification).
When to Use This vs. Reference Files
Use this lookup when you have a specific error code or message and need a quick answer. Use the midnight-status-codes:status-codes skill's reference files when you need deep context about an error category, want to understand the error hierarchy, or need to browse all errors from a component.
