fusebase-flow-specs

fusebase-flow-specs is a cursor rule for Cursor from fusebase-dev/fusebase-flow. It costs 0 tokens per session (540 once invoked), scanned A, original, MIT.

A set of writing rules for Fusebase Flow specification files. These files describe proposed work, decisions, handoffs, and backlog items for AI sessions rather than human readers.

In plain words
What is it for?
Use it when drafting specs, technical decisions, temporary handoffs, or backlog entries with consistent headings, tables, bullets, status labels, and precise references.
Why use it?
It keeps specifications concise, structured, and easy for an AI session to use without repeating context or hiding the decision in long prose.

Cursor rule for Cursor

Written for Cursor: installed under .cursor/. Also seen: mentions AGENTS.md.

Good fit Use it when drafting specs, technical decisions, temporary handoffs, or backlog entries with consistent headings, tables, bullets, status labels, and precise references.

Compare 6 cursor rules from other repositories ↓
Install with agentmods
npx agentmods add rules/fusebase-dev/fusebase-flow/fusebase-flow-specs
Install

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.

Clone the repo
git clone --depth 1 https://github.com/fusebase-dev/fusebase-flow

Made for: Cursor.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for fusebase-flow-specs

README.md
[![agentmods](https://agentmods.dev/badge/rules/fusebase-dev/fusebase-flow/fusebase-flow-specs/github.svg)](https://agentmods.dev/rules/fusebase-dev/fusebase-flow/fusebase-flow-specs)
Your own site
<a href="https://agentmods.dev/rules/fusebase-dev/fusebase-flow/fusebase-flow-specs"><img src="https://agentmods.dev/badge/rules/fusebase-dev/fusebase-flow/fusebase-flow-specs/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for fusebase-flow-specs

Your own site · 80×15
<a href="https://agentmods.dev/rules/fusebase-dev/fusebase-flow/fusebase-flow-specs"><img src="https://agentmods.dev/badge/rules/fusebase-dev/fusebase-flow/fusebase-flow-specs.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 0 Nothing until a file matches its globs; then the whole rule loads.
When invoked 540 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00000 $0.00540
Opus 5 $0.00000 $0.00270
Sonnet 5 $0.00000 $0.00108
Haiku 4.5 $0.00000 $0.00054

Measured today against content hash 50dbac8c3ec6, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

fusebase-flow-specs 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 today.

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.

.cursor/rules/fusebase-flow-specs.mdc · 41 lines

What it actually says

Fusebase Flow — Mode B (full) for spec-side artifacts

Files in this glob are read by AI sessions, not human readers. Optimize for AI context efficiency.

Mode B principles (full)

  1. Front-load the answer — first sentence/cell IS the answer; reasoning second.
  2. Tables over prose for structured data (3+ comparable rows → table).
  3. Bullets over paragraphs for enumerables (3+ items → bullets).
  4. Concrete over abstract — T17, sha:abc1234, repository.ts:42-58 — never "the earlier change".
  5. Predictable section names — use templates/ headers verbatim.
  6. No narrative storytelling — "Decision: X. Reason: Y. Alternatives: Z (rejected: A)." not "I considered X then thought about Y..."
  7. Cross-references precise — spec.md:42-58 not "see above".
  8. No restatement of context already in adjacent loaded files.
  9. Status fields tag-style — Status: DONE, Lock status: LOCKED.
  10. No hedging unless filing as a clarify item.
  11. Consistent vocabulary — use FLOW_RULES.md / AGENTS.md project-specific terms verbatim.
  12. No human-onboarding preamble — open with payload.

Substrates

  • docs/specs/<slug>/spec.mdtemplates/spec.md
  • docs/specs/<slug>/decisions.mdtemplates/decisions.md
  • docs/specs/<slug>/tasks.mdtemplates/tasks.md
  • docs/specs/<slug>/verification-gate.mdtemplates/verification-gate.md
  • docs/tmp/handoff/<YYYY-MM-DD>-<slug>-<stage>.md ← workflow templates in workflows/
  • docs/problem-catalog/<slug>/problem.mdtemplates/problem-catalog-entry.md

Anti-patterns

  • ASCII visuals in spec.md/decisions.md/tasks.md (visuals belong in chat per FR-08)
  • Restating constitution / spec content inside decisions.md
  • Free-form decision write-ups instead of letter-prefixed matrix
  • Long preambles ("This document captures...")
Changes

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.

  1. today First seen · 41 lines · 0 tokens per session scan A 50dbac8c3ec6

Subscribe to this mod's changes

fusebase-flow-specs is a cursor rule published in the GitHub repository fusebase-dev/fusebase-flow (9 stars, last pushed today), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 540 tokens. 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 2026-09-08.

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