// MCP TOKEN COST

The Breakpoint MCP server costs 50,963 tokens before the first call.

Every request your agent makes carries every tool definition this server exposes — context your code, documents and conversation can't use, mostly for tools the agent never calls. You don't need them all in the window, and you don't have to pay for them.

QUICK ANSWER The Breakpoint MCP server's 280 tool definitions consume 50,963 tokens — 25% of a 200k context window, and 27× the median MCP server (1,866 tokens). A scoped grant exposing only the tools you use cuts that roughly in proportion.

MEASURED FROM SCHEMAS tiktoken o200k_base · rank #78 of 12,801 measured servers · refreshed every build Method →

// CONTEXT WINDOW SHARE

What that costs 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 25%

1M WINDOW 5.1%

Corpus context: Breakpoint ranks #78 of 12,801 measured MCP servers by definition cost. The median is 1,866 tokens, p90 is 13,646, and the heaviest (Ainumbers Mcp Apps) is 442,891 — 221% of a 200k window on its own. New to this? See MCP token cost and context window in the glossary.

Token cost is one axis. See the risk picture across your whole stack →

// PER-TOOL BREAKDOWN

Where the 50,963 tokens go.

Each row is one tool definition as a tools/list entry — name, description and input schema — counted with o200k_base. Average: 182 tokens per tool.

Tool	Category	Tokens	% of server
card_template_create	Write	1,130	2.2%
board_create	Write	906	1.8%
piece_template_create	Write	719	1.4%
board_tile_create	Write	699	1.4%
interact_add_drop_zone	Write	607	1.2%
card_deck_from_table	Read	571	1.1%
dbg_set_breakpoints	Write	550	1.1%
interact_make_draggable	Destructive	526	1.0%
piece_instance	Write	459	0.9%
runtime_peers_digest	Execute	446	0.9%
card_hand_layout	Write	433	0.8%
board_tile_place	Write	414	0.8%
dbg_goto	Destructive	398	0.8%
collisionshape_add	Write	397	0.8%
cs_dbg_launch	Execute	386	0.8%
runtime_await_condition	Read	382	0.7%
asset_gen_placeholder	Write	381	0.7%
backend_configure	Write	380	0.7%
dbg_data_breakpoints	Read	372	0.7%
piece_move	Write	369	0.7%
cs_code_action	Execute	359	0.7%
dbg_launch	Execute	353	0.7%
joint_create	Write	350	0.7%
card_set_face	Write	348	0.7%
tileset_add_source	Write	340	0.7%
runtime_screenshot_diff	Read	338	0.7%
collisionpolygon_add	Write	327	0.6%
inputmap_add_event	Write	321	0.6%
tileset_set_tile_collision	Write	319	0.6%
runtime_seed_rng	Write	317	0.6%
audio_player_create	Write	316	0.6%
anim_statemachine_add_transition	Write	314	0.6%
card_instance	Write	310	0.6%
tilemap_set_cells_rect	Write	306	0.6%
mp_wire_rpc	Write	304	0.6%
particles_set_process_material	Write	302	0.6%
godot_run_project	Execute	299	0.6%
tilemap_set_cell	Write	292	0.6%
cs_dbg_set_breakpoints	Write	291	0.6%
cs_rename	Write	291	0.6%
breakpoint_doctor	Execute	284	0.6%
gd_code_action	Execute	284	0.6%
mp_add_synchronizer	Write	272	0.5%
dbg_set_exception_breakpoints	Write	270	0.5%
project_search	Read	268	0.5%
vcs_stash	Destructive	264	0.5%
particles_create	Write	263	0.5%
cs_dbg_set_variable	Write	261	0.5%
tileset_add_tile	Write	258	0.5%
mp_setup_enet_peer	Write	252	0.5%
mp_scaffold_lobby	Write	248	0.5%
gd_rename	Write	247	0.5%
navagent_configure	Write	246	0.5%
cs_completion	Write	245	0.5%
anim_insert_key	Write	242	0.5%
runtime_node_add	Write	242	0.5%
runtime_assert_screen_text	Read	240	0.5%
cs_dbg_watch	Read	235	0.5%
control_set_layout_preset	Write	234	0.5%
runtime_inject_input	Write	233	0.5%
anim_tree_create	Write	232	0.5%
dbg_watch	Read	231	0.5%
anim_statemachine_add_state	Write	229	0.4%
body_create	Write	229	0.4%
docs_search	Read	228	0.4%
cs_dbg_set_exception_breakpoints	Write	226	0.4%
board_place	Write	224	0.4%
dbg_set_variable	Write	224	0.4%
screenshot_editor	Read	222	0.4%
gd_completion	Write	222	0.4%
physics_set_gravity	Write	221	0.4%
cs_dbg_restart	Execute	220	0.4%
mp_add_spawner	Write	219	0.4%
leaderboard_scaffold	Write	218	0.4%
area_set_gravity	Write	217	0.4%
csg_create	Write	212	0.4%
find_symbol	Read	211	0.4%
control_create	Write	210	0.4%
dbg_restart	Execute	209	0.4%
environment_create	Write	209	0.4%
runtime_assert_perf	Read	208	0.4%
resource_set_import_settings	Write	208	0.4%
anim_tree_add_node	Write	207	0.4%
gd_call_hierarchy	Read	206	0.4%
body_set_physics_material	Write	203	0.4%
control_set_size_flags	Write	201	0.4%
vcs_restore	Write	200	0.4%
runtime_state_digest	Execute	199	0.4%
theme_set_color	Write	199	0.4%
runtime_anim_play	Write	198	0.4%
shadermaterial_set_param	Write	196	0.4%
find_usages	Read	195	0.4%
node_set_property	Write	194	0.4%
runtime_step_frames	Execute	193	0.4%
cloudsave_scaffold	Write	192	0.4%
mp_setup_webrtc_peer	Write	190	0.4%
resource_create	Write	189	0.4%
resource_save	Write	189	0.4%
auth_scaffold	Write	188	0.4%
mesh_set_surface_material	Write	186	0.4%
tileset_create	Write	184	0.4%
vcs_blame	Execute	183	0.4%
theme_set_constant	Write	183	0.4%
runtime_assert_node_state	Read	182	0.4%
light_create	Write	180	0.4%
theme_set_stylebox	Write	180	0.4%
signal_connect	Write	178	0.3%
rigidbody_set_properties	Write	177	0.3%
tilemaplayer_create	Write	174	0.3%
anim_add_track	Write	173	0.3%
anim_remove_key	Destructive	172	0.3%
container_add_child	Write	172	0.3%
primitive_mesh_create	Write	172	0.3%
resource_set_property	Write	172	0.3%
runtime_set_property	Write	172	0.3%
vcs_branch_create	Write	171	0.3%
audio_bus_add_effect	Write	170	0.3%
project_add_autoload	Write	170	0.3%
project_set_setting	Write	168	0.3%
project_add_export_preset	Write	167	0.3%
theme_set_font	Write	167	0.3%
runtime_time_scale	Execute	166	0.3%
meshinstance_create	Write	166	0.3%
navregion_create	Write	165	0.3%
shadermaterial_create	Write	164	0.3%
scene_new	Write	163	0.3%
gd_formatting	Write	163	0.3%
runtime_emit_signal	Write	163	0.3%
gd_document_highlight	Write	162	0.3%
node_instantiate_scene	Write	162	0.3%
godot_export	Write	161	0.3%
mp_set_authority	Write	161	0.3%
control_set_anchors	Write	157	0.3%
gd_declaration	Write	155	0.3%
inputmap_add_action	Write	154	0.3%
runtime_assert_scene_structure	Write	154	0.3%
example_snippet	Read	150	0.3%
gd_type_definition	Write	150	0.3%
runtime_anim_stop	Execute	148	0.3%
node_add	Write	148	0.3%
resource_duplicate	Write	147	0.3%
editorsettings_get_set	Read	146	0.3%
camera_create	Write	146	0.3%
environment_set_sky	Write	146	0.3%
joint_set_bodies	Write	145	0.3%
scene_pack	Write	145	0.3%
class_reference	Read	144	0.3%
runtime_get_log	Read	144	0.3%
signal_add_user_signal	Write	144	0.3%
vcs_show	Read	143	0.3%
node_set_editable_instance	Write	143	0.3%
signal_emit	Execute	143	0.3%
runtime_peer_stop	Execute	141	0.3%
gd_document_color	Read	141	0.3%
gd_implementation	Write	141	0.3%
shader_create	Write	141	0.3%
main_screen_set	Write	140	0.3%
gd_signature_help	Read	139	0.3%
cs_references	Read	139	0.3%
node_find	Read	138	0.3%
area_set_monitoring	Write	135	0.3%
audio_bus_add	Write	135	0.3%
cs_dbg_attach	Write	134	0.3%
signal_disconnect	Write	134	0.3%
backend_detect	Read	133	0.3%
cs_signature_help	Read	133	0.3%
godot_output	Read	132	0.3%
audio_set_bus_layout	Write	132	0.3%
vcs_diff	Read	131	0.3%
shadermaterial_set_shader	Write	131	0.3%
gd_references	Read	130	0.3%
particles_set_texture	Write	130	0.3%
tilemap_get_cell	Read	129	0.3%
body_set_collision_mask	Write	127	0.2%
cs_hover	Write	127	0.2%
project_set_main_scene	Write	126	0.2%
vcs_log	Read	125	0.2%
body_set_collision_layer	Write	125	0.2%
filesystem_move	Destructive	125	0.2%
anim_get_track_keys	Read	123	0.2%
cs_definition	Read	122	0.2%
gd_semantic_tokens	Read	121	0.2%
anim_player_create	Write	121	0.2%
dbg_attach	Write	120	0.2%
runtime_node_remove	Destructive	118	0.2%
node_change_type	Write	117	0.2%
theme_create	Write	115	0.2%
anim_delete	Destructive	114	0.2%
inputmap_erase_action	Destructive	114	0.2%
audio_set_stream	Write	114	0.2%
cs_diagnostics	Read	113	0.2%
gd_definition	Read	113	0.2%
scene_get_dependencies	Read	112	0.2%
node_duplicate	Write	112	0.2%
dbg_step	Write	111	0.2%
editor_undo	Write	111	0.2%
node_move_child	Write	111	0.2%
vcs_add	Write	111	0.2%
project_remove_autoload	Destructive	109	0.2%
anim_create	Write	109	0.2%
vcs_branch_list	Read	108	0.2%
gd_hover	Read	108	0.2%
particles_set_lifetime	Write	108	0.2%
particles_set_amount	Write	107	0.2%
cs_workspace_symbols	Read	106	0.2%
runtime_anim_get_state	Read	106	0.2%
control_set_theme	Write	106	0.2%
audio_bus_set_volume	Write	105	0.2%
runtime_get_monitors	Read	104	0.2%
anim_set_loop	Write	103	0.2%
anim_set_length	Write	102	0.2%
node_set_owner	Write	101	0.2%
gd_diagnostics	Read	100	0.2%
shader_set_code	Destructive	100	0.2%
gd_workspace_symbols	Destructive	99	0.2%
dbg_scopes	Read	99	0.2%
dbg_variables	Read	99	0.2%
particles_set_emitting	Write	99	0.2%
runtime_get_tree	Read	98	0.2%
editor_redo	Write	98	0.2%
node_reparent	Write	98	0.2%
resource_get_import_settings	Read	96	0.2%
gd_folding_ranges	Read	95	0.2%
godot_import	Write	94	0.2%
scene_save_as	Write	94	0.2%
scene_close	Destructive	93	0.2%
vcs_commit	Write	93	0.2%
node_remove_from_group	Write	91	0.2%
gd_document_link	Read	91	0.2%
tilemap_clear	Destructive	89	0.2%
runtime_get_property	Read	88	0.2%
vcs_switch	Write	87	0.2%
breakpoint_ports	Read	86	0.2%
classdb_get_class	Read	86	0.2%
scene_reload	Destructive	85	0.2%
signal_list_connections	Read	84	0.2%
cs_dbg_step	Write	84	0.2%
dbg_stack_trace	Read	82	0.2%
node_delete	Destructive	81	0.2%
cs_dbg_variables	Read	81	0.2%
cs_dbg_scopes	Read	79	0.2%
main_screen_get	Read	75	0.1%
resource_get_property	Read	75	0.1%
node_add_to_group	Write	74	0.1%
node_get_property	Read	73	0.1%
project_list_settings	Read	73	0.1%
godot_stop	Execute	72	0.1%
scene_get_tree	Read	72	0.1%
node_list_properties	Read	71	0.1%
node_get_path	Read	70	0.1%
test_list	Read	70	0.1%
dbg_continue	Write	70	0.1%
runtime_screenshot	Read	68	0.1%
cs_dbg_stack_trace	Read	67	0.1%
node_rename	Write	65	0.1%
node_get_children	Read	64	0.1%
vcs_status	Read	64	0.1%
anim_list	Read	62	0.1%
filesystem_list	Read	62	0.1%
filesystem_create_dir	Write	62	0.1%
test_detect	Read	60	0.1%
signal_list	Read	58	0.1%
scene_open	Write	58	0.1%
selection_set	Write	58	0.1%
resource_load	Read	57	0.1%
cs_dbg_continue	Write	57	0.1%
cs_document_symbols	Read	56	0.1%
project_get_setting	Read	54	0.1%
gd_document_symbols	Read	52	0.1%
node_list_groups	Read	51	0.1%
inputmap_list	Read	49	0.1%
scene_list_open	Read	49	0.1%
godot_launch_editor	Execute	46	0.1%
filesystem_scan	Execute	46	0.1%
project_get_info	Read	40	0.1%
editor_get_state	Read	38	0.1%
editor_ping	Read	34	0.1%
selection_get	Read	32	0.1%
godot_version	Read	32	0.1%
scene_save	Write	30	0.1%

// CUT THE COST

Your agent uses a handful of these tools. It pays for all 280.

You don't need all 280 of those definitions in the window. PolicyLayer is an MCP gateway that sits in front of Breakpoint: only the tools you grant are exposed to the agent, the rest never load. A smaller window means a sharper agent — less noise when it picks a tool — and every request costs less:

Grant scope	Definition cost	Reduction
All 280 tools (no gateway)	50,963 tokens	—
3 granted tools	~546 tokens	−99%
5 granted tools	~910 tokens	−98%
10 granted tools	~1,820 tokens	−96%

The risk dividend: 15 of these 280 tools are critical-risk (destructive or financial) and cost 2,487 tokens (5% of the definition load). Block them — the recommended starter policy — and you reclaim that context before tuning anything else.

Create a free account and register Breakpoint — nothing to install.
Grant only the tools you use — ungranted definitions never enter the context window.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CUT BREAKPOINT TOKEN COST →

Instant setup, no code required.

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

//FAQ

Breakpoint token-cost questions.

How many tokens does the Breakpoint MCP server use?+

Its 280 tool definitions total 50,963 tokens — 25% 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 Breakpoint 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 Breakpoint's token usage?+

Expose fewer tools. A PolicyLayer grant scopes Breakpoint 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 546 tokens, a 99% 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.

01

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.

02

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.

03

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 21-10-2026 from the PolicyLayer scan database over all 280 catalogued Breakpoint tools. Counts refresh with every site build.