json-chamber-mcp

Chamber MCP — seal / open JSON. Slid Phi Labs.

Cloak (seal new JSON) needs a live license. Open of an already-sealed blob is both keys, no extra payment. Ciphertext does not expire.

Install / run

Terminal

npx -y json-chamber-mcp

config.json

{
  "mcpServers": {
    "json-chamber": {
      "command": "npx",
      "args": ["-y", "json-chamber-mcp"],
      "env": {
        "CHAMBER_MASTER_SECRET": "your-high-entropy-secret"
      }
    }
  }
}

Discovery

Surface	URL
Official registry id	`io.github.ceedot-rock/json-chamber-mcp`
Lab well-known	https://www.slidphilabs.com/.well-known/mcp.json
Lab llms.txt	https://www.slidphilabs.com/llms.txt
npm	`json-chamber-mcp` 1.2.0
Server schema	`server.json`
Product	https://www.slidphilabs.com/chamber

Hosted lab MCP (PCC + catalog): POST https://www.slidphilabs.com/mcp · Smithery: https://smithery.ai/servers/slidphi/lab

Pricing

SKU	What	Price
Chamber try	cloak new JSON	24 hours free
Chamber month	cloak license	$9
Chamber year	cloak license	$99
Open	already-sealed blob	keys only

Prices live on https://www.slidphilabs.com/chamber

Tools

Tool	Purpose
`chamber_status`	cloak try remaining / dead / purchased
`chamber_info`	pointer to live prices
`chamber_cloak`	seal JSON / text (licensed)
`chamber_open`	open sealed blob (keys only)
`chamber_hop_gate`	admit/reject hop (gate only)
`chamber_hop_reject_log`	live sanitized reject log

Hop-gate (ScanChunk / Rider SoT)

Admission layer in front of seal/open. Seal/open APIs are unchanged. No SettleHop / x402.

Wire is exact text (Agent-Rider agent-rider-c / PR #22), not JSON:

Code

CUNI ScanChunk
url=https://example.com/
etag="abc"
hash=sha256:…
agent_id=agt_1

Fields (allowlist): url · etag · hash · agent_id. Gate result wire is a single exact-text code string (not a JSON body).

Code	Meaning
`admit`	hop allowed
`reject.schema`	Chamber-local only (Rider does not emit)
`reject.extra`	unknown keys or wrong kind — fail-closed; do not bind; never rehydrate
`reject.hash`	empty / invalid hash
`reject.replay`	hash already seen
`reject.agent`	agent allowlist fail
`reject.empty`	empty / missing required fields (`url`, `hash`, `agent_id`)

Live reject.log is TSV ISO\tcode\tpreview (mirrors agent-rider-c/reject.log); preview truncates ~120 and flattens newlines. Extra-key values never rehydrate as next machine input.

PCC ≠ payment — PCC is the compression/storefront face; hop-gate codes are admission control, not billing.

MCP tools: chamber_hop_gate, chamber_hop_reject_log.

Python SDK: https://github.com/ceedot-rock/json-chamber-sdk
Product: https://www.slidphilabs.com/chamber
Contact: corey@slidphilabs.com

Chamber README