Trueline Workflow

Trueline MCP tools replace built-in Read/Edit/Grep with hash-verified, streaming, ref-based equivalents. Catches hallucinated edits, cuts tokens. Use in right order.

CLI vs MCP

The same six tools are also available as a standalone trueline shell binary (at bin/trueline in the repo), useful for shell scripts, CI pipelines, and git hooks where no MCP-aware agent is running. The same hash-verification guarantees apply.

trueline outline <paths...>
trueline read <paths...> [--ranges 10-20]
trueline search <pattern> <paths...> [-i] [-r] [--multiline] [-C N]
trueline edit <path> --edits @file|-|<flat flags>
trueline verify <path> --refs ...
trueline changes [paths...]   # alias: diff

Every subcommand accepts --help/-h. Pass --json on any subcommand for {ok, result} machine-readable output. Exit codes: 0 ok, 1 search no match, 2 tool error, 3 usage error.

Use MCP tools (this skill) for in-agent file work. Use the CLI for anything outside an agent context.

Tool cheat sheet

Three workflows

Pick one matching what you know.

1. Surgical (default) — know the target

trueline_search(file_paths, pattern) -> trueline_edit

No read step. trueline_search returns lines with hash prefixes plus ref. Feed straight into trueline_edit. Fastest. Use for renames, string swaps, bugfixes on named function.

2. Exploratory — need context first

trueline_outline -> trueline_read (targeted ranges) -> trueline_edit

Outline gives structure. Read only ranges you need. trueline_read accepts path:startLine-endLine inline for multiple slices in one call.

3. Re-entering — refs held across turns

trueline_verify(refs) -> re-read only stale ranges -> trueline_edit

Nothing changed -> edit straight away. Stale -> re-read just that range. Never re-read whole file on spec.

Worked example: search -> edit

trueline_search output:

->ab10	old line one
cd11	old line two
ref: ab10-cd11/efghij

Replace both:

trueline_edit(
  file_path=…,
  edits=[{ range: "ab10-cd11", ref: "ab10-cd11/efghij", content: "new line one\nnew line two" }]
)

• range uses hashLine identifiers verbatim from output.
• ref is the full range checksum (e.g. ab10-cd11/efghij) — copy verbatim, never guess.
• Wide ref (e.g. lines 1-157) valid for any sub-range inside. Don't re-read narrower.
• Lines prefixed with -> are matches; lines without -> are context. Both carry hashLine identifiers usable in range.

Load-bearing rules

Non-negotiable. Violations -> verification errors or silent data loss.

• Never fabricate refs. Copy the full ref (e.g. ab10-cd11/efghij) directly from output. Made-up ref fails verification.
• Hash prefixes (ab10) required. Not decoration — verify content at that line.
• action="insert_after" to add lines. Without it, range is replaced and content lost. To add next to existing lines, pass action: "insert_after".
• Don't re-read data you have. With ref and hashLine from prior search/read, go straight to trueline_edit.

Multi-file batches

Editing many files? Use Grep to find files, then pass all paths to one trueline_search call. Refs for every match in one round-trip.

Deferred tool loading

If trueline schemas deferred, load in one batch:

ToolSearch("+trueline read edit")

Loads all six schemas together. One call, not six.

Quick reference

• Exploration default: trueline_outline.
• Edit default: trueline_search -> trueline_edit.
• Review changes: trueline_changes.
• Refs between turns: trueline_verify.