// MCP TOKEN COST

The Zetrix MCP server costs 7,518 tokens before the first call.

Connect Zetrix and its 55 tool definitions are loaded into the model's context on every request — 3.8% of a 200k window spent before your agent does anything.

QUICK ANSWER The Zetrix MCP server's tool definitions consume 7,518 tokens — 3.9× the median MCP server (1,905 tokens). A scoped grant exposing only the tools you use cuts that roughly in proportion.

MEASURED FROM SCHEMAS 55 tools · 7,518 tokens · 3.8% of 200k · 0.8% of 1M Method →

// CONTEXT WINDOW SHARE

What that buys before your agent starts working.

Tool definitions are overhead: they occupy context on every request and compete with your code, documents and conversation history for the same window.

200K WINDOW 3.8%

1M WINDOW 0.8%

Corpus context: Zetrix ranks #666 of 3,213 measured MCP servers by definition cost. The median is 1,905 tokens, p90 is 7,952, and the heaviest (Fusionauth) is 183,337 — 92% of a 200k window on its own.

// PER-TOOL BREAKDOWN

Where the 7,518 tokens go.

Each row is one tool definition as a tools/list entry — name, description and input schema — counted with o200k_base. Average: 137 tokens per tool.

Tool	Category	Tokens	% of server
zetrix_sdk_set_privilege	Write	437	5.8%
zetrix_sdk_invoke_contract_by_asset	Execute	410	5.5%
zetrix_sdk_invoke_contract	Execute	406	5.4%
zetrix_sdk_create_contract	Write	404	5.4%
zetrix_sdk_set_metadata	Write	397	5.3%
zetrix_sdk_upgrade_contract	Execute	395	5.3%
zetrix_sdk_send_asset	Write	393	5.2%
zetrix_sdk_activate_account	Write	386	5.1%
zetrix_sdk_send_gas	Write	381	5.1%
zetrix_sdk_issue_asset	Write	366	4.9%
zetrix_sdk_create_log	Write	352	4.7%
zetrix_contract_generate_advanced	Write	327	4.3%
zetrix_submit_transaction	Write	188	2.5%
zetrix_call_contract	Read	157	2.1%
zetrix_get_transaction_blob	Read	139	1.8%
zetrix_ws_submit_transaction	Write	139	1.8%
zetrix_contract_init_dev_environment	Write	108	1.4%
zetrix_test_transaction	Read	99	1.3%
zetrix_get_ledger	Read	97	1.3%
zetrix_sdk_call_contract	Read	91	1.2%
zetrix_get_account_assets	Read	90	1.2%
zetrix_crypto_verify	Read	87	1.2%
zetrix_get_balance	Read	87	1.2%
zetrix_crypto_validate_key	Read	80	1.1%
zetrix_contract_get_token_standard	Read	78	1.0%
zetrix_crypto_encrypt_key	Read	71	0.9%
zetrix_crypto_sign	Read	70	0.9%
zetrix_crypto_decrypt_key	Read	69	0.9%
zetrix_get_account_metadata	Read	63	0.8%
zetrix_get_transaction_cache	Read	61	0.8%
zetrix_get_transaction_history	Read	57	0.8%
zetrix_ws_connect	Write	54	0.7%
zetrix_get_block	Read	52	0.7%
zetrix_sdk_is_activated	Read	51	0.7%
zetrix_ws_subscribe_tx	Read	51	0.7%
zetrix_crypto_get_public_key	Read	50	0.7%
zetrix_get_account	Read	49	0.7%
zetrix_get_account_base	Read	49	0.7%
zetrix_sdk_get_nonce	Read	49	0.7%
zetrix_crypto_get_address	Read	48	0.6%
zetrix_sdk_get_balance	Read	48	0.6%
zetrix_version	Read	46	0.6%
zetrix_contract_get_structure_guide	Read	45	0.6%
zetrix_get_transaction	Read	44	0.6%
zetrix_multi_query	Read	44	0.6%
zetrix_contract_get_testing_guide	Read	42	0.6%
zetrix_crypto_generate_keypair	Write	41	0.5%
zetrix_contract_get_chain_functions	Read	40	0.5%
zetrix_contract_get_utils_functions	Read	40	0.5%
zetrix_create_keypair	Write	36	0.5%
zetrix_sdk_create_account	Write	34	0.5%
zetrix_get_latest_block	Read	33	0.4%
zetrix_check_health	Read	32	0.4%
zetrix_ws_status	Read	28	0.4%
zetrix_ws_disconnect	Write	27	0.4%

// SCOPED GRANT

Most agents use a handful of these tools. They pay for all 55.

A PolicyLayer grant exposes only the tools you allow — ungranted definitions are filtered out of the tool list, so they never enter the context window. Estimates below assume typical-weight tools (137 tokens each).

Grant scope	Definition cost	Reduction
All 55 tools (no gateway)	7,518 tokens	—
3 granted tools	~410 tokens	−95%
5 granted tools	~683 tokens	−91%
10 granted tools	~1,367 tokens	−82%

Model your own stack in the token-cost calculator, or see the Zetrix policy for what a sensible grant looks like.

//FAQ

Zetrix token-cost questions.

How many tokens does the Zetrix MCP server use?+

Its 55 tool definitions total 7,518 tokens — 3.8% of a 200k context window — measured with tiktoken o200k_base over the serialised tools/list payload. Exact counts vary slightly by client and model.

Why does Zetrix consume tokens before I send a message?+

MCP clients load every connected server's tool definitions — name, description, and input schema — into the model's context so it knows what it can call. That payload is charged against your context window on every request, whether or not a tool is used.

How do I reduce Zetrix's token usage?+

Expose fewer tools. A PolicyLayer grant scopes Zetrix to only the tools you allow — ungranted definitions are filtered out of the tool list, so they never enter the context window. A grant of 3 typical tools costs roughly 410 tokens, a 95% reduction.

Does deferred tool loading fix this?+

Partially, in some clients. Claude Code defers MCP tool schemas behind a tool-search step by default, and VS Code has experimental grouping — but you still pay tokens per search and reload, and Cursor, Windsurf and Gemini CLI load definitions upfront. Reducing the exposed tool set cuts the cost in every client.

// METHOD & REVIEW

How these numbers were measured.

Serialisation

Each tool is serialised as a tools/list entry — name, description, input schema — from the schemas in the PolicyLayer scan database. Clients differ slightly in framing, so treat counts as close estimates.

Tokeniser

tiktoken o200k_base (GPT-4o/o-series). Anthropic's current tokeniser isn't published, so Claude's exact counts will differ; for English text and JSON schemas the totals are close enough to treat these as estimates.

Deferred loading

Some clients now defer schema loading (Claude Code's tool search; VS Code experimental grouping). You still pay per search and reload — and Cursor, Windsurf and Gemini CLI load everything upfront.

Computed 07-06-2026 from the PolicyLayer scan database over all 55 catalogued Zetrix tools. Counts refresh with every site build.

Expose only the tools you use — the rest never enter your context.

A PolicyLayer grant scopes Zetrix to the tools you actually allow. Ungranted definitions never load, and every call that does run is checked against policy first.

SCOPE YOUR GRANT →

Free to start. No card required.

4,600+ MCP servers and 31,000+ tools scanned and risk-classified.