Grapefruit is an open-source suite for testing the security of iOS and Android mobile applications by instrumenting running apps and exposing their behavior through a web interface. Security researchers use it to inspect, intercept, and modify app functions, files, and cryptographic operations. Catalogue add-ons extend workflows for operating Grapefruit.
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 skills add ChiChou/grapefruit --skill igfgit clone --depth 1 https://github.com/ChiChou/grapefruitWrote 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.
[](https://agentmods.dev/skills/chichou/grapefruit/igf)<a href="https://agentmods.dev/skills/chichou/grapefruit/igf"><img src="https://agentmods.dev/badge/skills/chichou/grapefruit/igf/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.
<a href="https://agentmods.dev/skills/chichou/grapefruit/igf"><img src="https://agentmods.dev/badge/skills/chichou/grapefruit/igf.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 4 findings, up to high
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- high Privilege Escalation · line 228 Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
- high Privilege Escalation · line 229 Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
- medium Rogue Agent · line 93 Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
- medium Rogue Agent · line 112 Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00038 | $0.00945 |
| Opus 5.5 | $0.00015 | $0.00378 |
| Sonnet 5.5 | $0.00008 | $0.00189 |
| Haiku 4.5 | $0.00004 | $0.00094 |
Grade A, and why
igf scanned grade A with 1 finding 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 16d ago.
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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
curl -s http://localhost:31337/api/devices How it starts
The opening of the file, as written. The whole thing — 98 lines — stays where its author put it; the contents beside it link to each section on GitHub.
IGF CLI
Scope
Use IGF for platform-specific inspection (storage, keychain/keystore, manifests, frameworks) and managed captures with persisted evidence and hook snapshots. Use Frida's Python API or CLI for custom scripts, memory operations, threads, module/symbol enumeration, and basic process metadata. Attach a separate Frida session for that work.
The CLI and its daemon do not expose script.*, memory.*, threads.*,
symbol.* (except platform-specific symbol.strings), info.processInfo,
webview.evaluate, jsc.run, or rn.inject.
Commands
igf rpc [target options] <namespace.method> [args...]
igf session ls --json
igf session open [target options]
igf session close <id>
igf session gc
igf daemon stop
igf setup [--global]
Target options:
--device <id> --platform <ios|android> --bundle <id>for an app.--device <id> --platform <ios|android> --pid <pid> [--name <name>]for a process.--session <id>to reuse an explicit daemon session.
Reuse the target supplied by the user. -L <label> selects an isolated daemon;
--project <path> selects its data directory. --replace replaces an active iOS
app session when needed. --json requests predictable machine output.
RPC arguments are positional JSON values or plain strings. Use the actual
namespace and method names from agent/src/{fruity,droid}/router.ts and their
exported modules; there are no igf agent, igf device, igf log, or
igf history subcommands.
Examples
# Inspect app storage
igf rpc --device DEVICE --platform android --bundle com.example.app fs.roots
igf rpc --session SESSION fs.ls /data/user/0/com.example.app
igf rpc --session SESSION sqlite.tables /path/to/database
igf rpc --session SESSION sqlite.dump /path/to/database users
# Inspect app metadata
igf rpc --device DEVICE --platform android --bundle com.example.app app.info
igf rpc --device DEVICE --platform ios --bundle com.example.app info.plist
# Manage captures
igf rpc --session SESSION pins.list
igf rpc --session SESSION pins.start crypto
igf rpc --session SESSION pins.snapshot
igf rpc --session SESSION pins.stop crypto
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.
- 16d ago Changed · -216 lines · -13 tokens per session ecf71a069f22
- 1mo ago First seen · 314 lines · 51 tokens per session scan A 9830a49fb526
igf is a skill published in the GitHub repository ChiChou/grapefruit (1,401 stars, last pushed 16d ago), licensed MIT. It adds 38 tokens to every session and 945 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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