GitNexus/gitnexus/skills/gitnexus-exploring.md
Gergő Magyar 9ff7337f1e
fix(mcp): rename query/cypher params so Claude Code can call them (#2186)
* fix(mcp): advertise search_query/statement params for query/cypher tools (#2175)

Claude Code drops a tool-call argument named exactly 'query', making the
query and cypher tools unusable from it. Rename the advertised required
parameters to search_query and statement so the client transmits them.
Handler-side backward-compat for the legacy 'query' key follows in the
next commit.

* fix(mcp): accept search_query/statement with legacy query fallback (#2175)

Resolve the new advertised param names in the backend while still accepting
the legacy 'query' key, so curl/HTTP, other MCP clients, the CLI, the group
path, and the internal executeCypher() all keep working. Alias is normalized
once at the callTool chokepoint (covers group-forward + search alias); query()
and cypher() dual-read defensively. New name wins when both are supplied.
Updates the required-error message and adds dual-accept unit + integration
coverage.

* fix(cli): pass canonical search_query/statement params to query/cypher tools (#2175)

Stop the CLI from depending on the deprecated 'query' alias. No user-facing
change — the positional args are unchanged and the backend accepts both keys.

* fix(mcp): generators advertise search_query in query() examples (#2175)

Update the three doc/example generators (ai-context AGENTS/CLAUDE block,
skill-gen community skills, resources repo hint) so future analyze runs emit
query({search_query: ...}) — the param name Claude Code actually transmits.
Tests assert the new form is present and the legacy query({query: form is
absent (the #2059 generator-test pattern).

* docs(mcp): advertise search_query/statement in skill & guidance examples (#2175)

Sync the committed agent-facing docs to the renamed params so a Claude Code
agent following them emits the transmittable key: AGENTS.md/CLAUDE.md gitnexus
block, the canonical gitnexus/skills/* source and its installed/plugin/cursor
mirrors, and the README examples. Scoped rewrite of the two call prefixes only
(query({query: -> search_query, cypher({query: -> statement).

* style(mcp): prettier line-wrap for #2175 alias-resolution edits

* fix(review): uniform search_query precedence + cypher empty guard (#2175)

Code-review findings (correctness/adversarial/api-contract/maintainability
consensus):
- Group-mode query inverted the 'new name wins' rule: the callTool chokepoint
  backfilled params.query only when empty and the @group-forward read
  params.query directly, so a both-keys (or whitespace-legacy) group call let
  the legacy value win — unlike the local path. Replace the hidden param
  mutation with a self-contained 'search_query ?? query' resolve at the
  group-forward; precedence is now uniformly new-wins at every consumer site.
- cypher() now returns the same friendly required-param error as query() when
  neither statement nor query is supplied, instead of a raw DB prepare error.
- Document the legacy alias as permanent (third-party clients may send query=).
Adds group-forward alias tests (both-keys + legacy-only), empty/whitespace
search_query, the search-alias path, and the cypher empty-statement guard.

* fix(review): non-string alias safety + drop stale chokepoint comment (#2175)

Tri-review findings (correctness/adversarial/security + maintainability):
- Non-string statement/search_query/query (the MCP envelope is not
  schema-validated) hit .trim() and threw TypeError to the server boundary
  instead of a friendly required-param error. Introduce resolveAliasString()
  (new name wins; non-string -> undefined) used by query(), cypher(), and the
  group-forward, so all three return the structured error. Empirically verified
  (123 ?? '' -> 123, (123).trim() throws) — this overrides a critic refutation
  that mis-read ?? as a string coercion.
- Remove the stale query() comment claiming alias resolution happens at a
  callTool chokepoint; that mutation was removed earlier in this PR — each site
  resolves the alias itself.
- Document GroupToolPort.query's intentionally-narrower required type vs the
  wider LocalBackend impl.
Adds non-string and empty-new-key precedence tests.

* fix(mcp): alias falls back to legacy value when new key is blank (#2175)

PR #2186 review finding: resolveAliasString used `canonical ?? legacy`
(nullish), so an explicitly empty/whitespace new-name value (e.g.
{search_query:'', query:'real'}) won and was rejected — discarding a valid
legacy value, contradicting the 'new name wins when both supplied' intent.
Resolve to the first NON-BLANK string instead (new preferred when it carries
a real value, else legacy). Covers query(), cypher(), and the group-forward
(all route through the helper); non-string still resolves to a friendly error.
Flips the presence-based test and adds whitespace/cypher/group fallback cases.

* fix(mcp): drop legacy "query" mention from query/cypher schema descriptions (#2175)

PR #2186 review finding: the search_query/statement inputSchema descriptions
named the legacy "query" key — the exact arg Claude Code drops — and
description text is read by an LLM choosing arguments, weakly nudging it to
send "query". Trim the descriptions to their clean form and move the
legacy-alias note to a code comment next to the schema (preserved for
maintainers / non-CC clients). properties/required unchanged (no `query`).
2026-06-13 10:24:16 +01:00

2.9 KiB

name description
gitnexus-exploring Use when the user asks how code works, wants to understand architecture, trace execution flows, or explore unfamiliar parts of the codebase. Examples: "How does X work?", "What calls this function?", "Show me the auth flow"

Exploring Codebases with GitNexus

When to Use

  • "How does authentication work?"
  • "What's the project structure?"
  • "Show me the main components"
  • "Where is the database logic?"
  • Understanding code you haven't seen before

Workflow

1. READ gitnexus://repos                          → Discover indexed repos
2. READ gitnexus://repo/{name}/context             → Codebase overview, check staleness
3. query({search_query: "<what you want to understand>"})  → Find related execution flows
4. context({name: "<symbol>"})            → Deep dive on specific symbol
5. READ gitnexus://repo/{name}/process/{name}      → Trace full execution flow

If step 2 says "Index is stale" → run node .gitnexus/run.cjs analyze in terminal.

Checklist

- [ ] READ gitnexus://repo/{name}/context
- [ ] query for the concept you want to understand
- [ ] Review returned processes (execution flows)
- [ ] context on key symbols for callers/callees
- [ ] READ process resource for full execution traces
- [ ] Read source files for implementation details

Resources

Resource What you get
gitnexus://repo/{name}/context Stats, staleness warning (~150 tokens)
gitnexus://repo/{name}/clusters All functional areas with cohesion scores (~300 tokens)
gitnexus://repo/{name}/cluster/{name} Area members with file paths (~500 tokens)
gitnexus://repo/{name}/process/{name} Step-by-step execution trace (~200 tokens)

Tools

query — find execution flows related to a concept:

query({search_query: "payment processing"})
→ Processes: CheckoutFlow, RefundFlow, WebhookHandler
→ Symbols grouped by flow with file locations

context — 360-degree view of a symbol:

context({name: "validateUser"})
→ Incoming calls: loginHandler, apiMiddleware
→ Outgoing calls: checkToken, getUserById
→ Processes: LoginFlow (step 2/5), TokenRefresh (step 1/3)

Example: "How does payment processing work?"

1. READ gitnexus://repo/my-app/context       → 918 symbols, 45 processes
2. query({search_query: "payment processing"})
   → CheckoutFlow: processPayment → validateCard → chargeStripe
   → RefundFlow: initiateRefund → calculateRefund → processRefund
3. context({name: "processPayment"})
   → Incoming: checkoutHandler, webhookHandler
   → Outgoing: validateCard, chargeStripe, saveTransaction
4. Read src/payments/processor.ts for implementation details