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 skills/ssube/conclave/matrixnpx skills add ssube/conclave --skill matrixgit clone --depth 1 https://github.com/ssube/conclaveWhat 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 | $0.00042 | $0.01354 |
| Opus 5 | $0.00021 | $0.00677 |
| Sonnet 5 | $0.00008 | $0.00271 |
| Haiku 4.5 | $0.00004 | $0.00135 |
Grade A, and why
matrix 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 2d 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.
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 — 165 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Matrix Skill
Unified Matrix communication tool with structured error handling, rate-limit awareness, and room alias resolution.
Actions
| Action | Description |
|---|---|
send |
Send a text message to a room |
read |
Read recent messages from a room (chronological, with filters) |
rooms |
List all joined rooms |
attach |
Upload and send a file (auto-detects image/video/audio) |
react |
Send a reaction to an event |
reactions |
Query reactions on a specific event (with fallback scan) |
batch |
Send multiple files with pacing to avoid rate limits |
Usage
python3 {baseDir}/matrix.py <command> [options]
Send a message
# Send to default room
python3 {baseDir}/matrix.py send "Hello from the agent"
# Send to a specific room by alias
python3 {baseDir}/matrix.py send "Status update" --room home
# Send to a room by full alias
python3 {baseDir}/matrix.py send "Hello" --room '#general:example.com'
# Send to a room by ID
python3 {baseDir}/matrix.py send "Hello" --room '!abc123:example.com'
Read messages
# Read last 2 hours from default room
python3 {baseDir}/matrix.py read --room home
# Read last 30 minutes, compact format
python3 {baseDir}/matrix.py read --room home --since 30 --compact
# Filter to a specific user, humans only
python3 {baseDir}/matrix.py read --room home --from ssube --humans-only
# Check all joined rooms
python3 {baseDir}/matrix.py read --all --humans-only
# Output as JSON
python3 {baseDir}/matrix.py read --room home --json
List rooms
python3 {baseDir}/matrix.py rooms
Send a file
# Upload and send an image (auto-detected)
python3 {baseDir}/matrix.py attach --file /path/to/image.png --room home
# Upload with a caption (sent as separate text message before the file)
python3 {baseDir}/matrix.py attach --file /path/to/video.mp4 --caption "Check this out" --room home
React to a message
python3 {baseDir}/matrix.py react '$eventId' --emoji "👍" --room home
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 2d ago First seen · 165 lines · 42 tokens per session scan A ea306f7e253a
matrix is a skill published in the GitHub repository ssube/conclave (2 stars, last pushed 6mo ago), licensed MIT. It adds 42 tokens to every session and 1,354 once invoked, about $0.0002 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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