2× the context. ½ the cost.
a Claude Code plugin that compresses agent context per turn with a learned curator — model traffic goes straight from your machine to Anthropic, never through our cloud, and savings are measured per-request, never estimated.
claude plugin marketplace add https://github.com/daseinlabs/claude-pluginsdemo
install, run, ask for the number
two commands to install. one skill to see what you saved.
~ — claude code
illustrative session — your numbers come from per-request count_tokens measurement, never an estimate.
how it works
local proxy, hosted brain
install the plugin
one command in Claude Code — no base-URL surgery, no wire config. agents, hooks, and the savings status line arrive as plugin surfaces.
a local proxy curates each turn
chunking, freezing, and splicing happen on your machine. the hosted brain returns keep/cut scores; the proxy applies the cut, and your request rides your own credentials to Anthropic.
savings are measured, not modeled
every request runs a free count_tokens probe of the original body against what was actually billed. no modeled baseline, no extrapolation — if the ledger is empty, the report says so.
what you get
a learned curator, with receipts
learned curator
a GNN scores every chunk of context, every turn. the proxy applies keep/cut locally. the model sees what matters.
exploration mapsfree tier
a parsec:explore agent maps the repo up front. the agent stops re-discovering the same files every session.
no-reread hookfree tier
re-reading a file already in context gets denied with a pointer to where it lives. a loop-breaker catches the same command run on repeat.
honest measurement
every request runs a count_tokens probe of the original body. savings are measured against what you were actually billed — never modeled.
data plane local
model traffic leaves your machine, with your credentials. subscription tokens never touch our cloud.
fail open
every layer degrades to passthrough on error. fail-opens are counted and visible, not hidden.
the product
what it looks like
a ledger, not a chart deck: dollars saved per request on the dashboard, and the same accounting surfaced in your session.
usage & savings
By model
| Model | Requests | Tokens saved | Cost saved |
|---|---|---|---|
| claude-opus-5 | 118 | 486k | $5.12 |
| claude-sonnet-5 | 284 | 913k | $2.29 |
Read src/lib/platform.ts
re-read denied: file already in context (insist once to override)
parsec 12.4k saved
illustrative — rendered UI, not screenshots; numbers shown are examples.
measurement honesty
measured, never modeled
before curation touches anything, the proxy calls Anthropic's free count_tokens on the original request body — the exact bytes you would have sent.
after the response comes back, it records what you were actually billed. the savings number is the difference between the two, computed per request.
every row lands in a local ledger — ~/.parsec/ledger.jsonl — that you can open and read yourself.
if the probe fails, the row records a hole — never an invented number.
{ "counterfactual_input_tokens": 21968, "billed_input_tokens": 1204, "cache_read_tokens": 9861, "model": "claude-sonnet-5", "request_id": "req_011CQx…", "fail_open": false }
testimonials
what engineers say
“By turn thirty our agents were dragging the entire transcript into every request. parsec was the first tool that trimmed it without asking me to trust a summary I couldn't inspect.”
“The ledger is what convinced me. Every request shows the counterfactual next to what was actually sent — I didn't have to believe a dashboard, I could read the receipts.”
“My Max plan used to hit the weekly wall by Thursday. Long agent sessions just keep going now — same model, same credentials, nothing routed through anyone else's cloud.”
tiers
start free. the learned curator is the upgrade.
the free plugin is a real product, not a demo. paid tiers add the brain — the part that stays server-side.
free
start herethe plugin
free
- exploration maps
- no-reread hook
- savings status line
- runs on your plan or key — no account needed
pro
plugin + local proxy
coming soon
- the full learned curator via the hosted scoring API
- tool-schema prune
- governor
team
hosted BYOK gateway in our cloud
coming soon
- API keys only — never subscription tokens
- zero local install
- centralized reporting
enterprise
self-host
talk to us
- licensed checkpoints
- containerized stack
- on-prem fine-tuning on your traces
on subscription plans there is no per-token bill — the win is more Claude Code inside the same rate limits.
faq
straight answers
does my code go to your servers?
on the pro tier, the local proxy sends chunk text and structural features to our scoring API over TLS and gets keep/cut scores back — your model requests never route through us; they leave your machine with your own credentials. on the free tier, nothing is sent to us at all. the one exception is the hosted team gateway, where you explicitly choose to run the proxy in our cloud with a BYOK API key.
can I use my Claude subscription (Max plan)?
yes. traffic leaves your machine with your own OAuth token, same as stock Claude Code — the rewriting happens locally. we never route subscription tokens through our cloud; the hosted gateway is BYOK API keys only.
what happens when your API is down?
the proxy fails open. your request passes through uncompressed, so a scoring outage never blocks a session. fail-open events are counted and visible, not silently swallowed.
how are savings calculated?
per request, the proxy runs a count_tokens probe on the original body and compares it against what was actually billed. that measured counterfactual is the only source of savings numbers — never a modeled baseline. the ledger is kept locally, alongside your traffic.
does it train on my data?
no by default. telemetry is opt-in and tiered, and the default is off. you can preview exactly what would upload before opting in, and purge requests are honored.
is it open source?
the client stack — plugin, proxy, engine, mapgen, contracts — is MIT. the trained model and the training stack are not. we open-source the deterministic shell and sell the brain.
get started
two commands from here
claude plugin marketplace add https://github.com/daseinlabs/claude-plugins
claude plugin install parsec@parsec-marketplace
the free tier needs no account — exploration maps, the no-reread hook, and the savings ledger run from the plugin alone.