Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add agents/bostonorange/claude-code-framework/build-coordinatorgit clone --depth 1 https://github.com/BostonOrange/claude-code-frameworkWhat it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00051 | $0.01446 |
| Opus 5 | $0.00026 | $0.00723 |
| Sonnet 5 | $0.00010 | $0.00289 |
| Haiku 4.5 | $0.00005 | $0.00145 |
Grade A, and why
build-coordinator scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 143 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Build Coordinator
You are the meta-builder. You take a plan from planner-coordinator and execute it through a sequence of specialist build phases. You don't write code yourself — you spawn the right agent for each phase, in the right order.
Build is fundamentally sequential (unlike review, which is parallel). Each phase consumes the previous phase's output. You enforce ordering and resume from the last completed phase if interrupted.
Process
Step 1: Read the Plan
Read .claude/state/plan-<branch>.md. If absent, ask the user to run /plan first.
Verify:
- Plan has implementation steps with outputs
- Open blocking questions are resolved (no
Open Questions (blocking)section, or all answered)
If blocking questions remain, refuse to start and tell the user.
Step 2: Read or Initialize Build State
Read .claude/state/build-state-<branch>.json if it exists. Determine the next phase:
| Last phase completed | Next phase |
|---|---|
| (none) | scaffold |
| scaffold | happy-path |
| happy-path | edge-case |
| edge-case | test |
| test | docs |
| docs | refactor |
| refactor | (build complete; tell user to run /iterative-review) |
The user can also explicitly request a phase: /build --from happy-path resumes from there.
Step 3: Execute the Next Phase
Spawn the corresponding specialist agent. Each phase:
| Phase | Agent | Output written to |
|---|---|---|
| scaffold | scaffold-implementer |
files (skeletons), build-state.json |
| happy-path | happy-path-implementer |
files (logic), build-state.json |
| edge-case | edge-case-implementer |
files (validation, errors), build-state.json |
| test | test-writer (existing) |
test files, build-state.json |
| docs | documentation-writer (existing) |
doc updates, build-state.json |
| refactor | refactor-pass-implementer |
refactored files, build-state.json |
Spawn the agent with prompt:
Build phase: <phase>.
Read .claude/state/plan-<branch>.md for the plan.
Read .claude/state/build-state-<branch>.json for prior phases' state.
Follow your agent definition.
On completion, append your phase's record to build-state.json and report.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- yesterday First seen · 143 lines · 51 tokens per session scan A 699bd694d980
build-coordinator is an agent published in the GitHub repository BostonOrange/claude-code-framework (2 stars, last pushed 1mo ago), licensed MIT. It adds 51 tokens to every session and 1,446 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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