MCP Server
Canon (wallstreet.wiki)
wiki.wallstreet/canon
What this MCP does
Searches a finance reference canon, explains regulatory thresholds and formulas, computes validated finance metrics, and produces verifiable citations and receipts.
Capabilities
Tools
13
tools
canon_batch
Compute many formulas at once
Run up to 50 computes in one call, for scenario grids and sensitivity tables. Each item returns its own receipt; the batch receipt id is sha256 over the sorted item receipt ids, so a whole table can be cited by one hash.
Read only
Idempotent
Input schema
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['items'], 'properties': {'items': {'type': 'array', 'items': {'type': 'object', 'required': ['formula', 'inputs'], 'properties': {'inputs': {'type': 'object', 'propertyNames': {'type': 'string'}, 'additionalProperties': {}}, 'formula': {'enum': ['options.bsm.price', 'options.bsm.greeks', 'options.implied_vol', 'options.put_call_parity', 'options.vertical_spread', 'options.kelly', 'options.expected_move', 'bonds.price', 'bonds.ytm', 'bonds.risk', 'hf.sharpe', 'hf.sortino', 'hf.max_drawdown', 'hf.fee_net', 'quant.annualize', 'quant.var_parametric', 'pe.irr', 'pe.multiples', 'vc.round', 'ma.accretion_dilution', 'ma.lbo_returns', 'credit.all_in_yield', 'credit.coverage', 'cal.is_trading_day', 'cal.holidays', 'cal.trading_days_between', 'cal.add_trading_days', 'cal.settlement', 'cal.next_expiration', 'cal.year_fraction'], 'type': 'string'}}}, 'maxItems': 50, 'minItems': 1}}}
canon_changes
What changed in the canon
Aggregated dated change events across every vertical, newest first. Poll this instead of re-crawling.
Read only
Open world
Input schema
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'properties': {'since': {'type': 'string', 'pattern': '^\\d{4}-\\d{2}-\\d{2}$', 'description': 'ISO date; only events on or after this date'}}}
canon_cite
Cite a canon entry
Ready-to-paste citation strings (markdown, plain, apa, bibtex) for one entry, with the reviewed date. Use when writing a report that quotes the canon.
Read only
Open world
Input schema
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['site', 'id'], 'properties': {'id': {'type': 'string', 'maxLength': 200, 'minLength': 1}, 'site': {'enum': ['wallstreet.wiki', 'hedgefund.wiki', 'options.wiki', 'fixed-income.wiki', 'quants.wiki', 'pe-finance.wiki', 'm-a.wiki', 'privatecredit.wiki', 'venture-capital.wiki'], 'type': 'string'}, 'format': {'enum': ['markdown', 'plain', 'apa', 'bibtex'], 'type': 'string'}}}
canon_compute
Compute with a receipt
Run one formula from the registry on validated inputs. Returns outputs, the convention used, citations, and a receipt whose id is sha256 over formula, version, canonical inputs and outputs. Invalid inputs return an explicit problem list and a working example instead of nulls.
Read only
Idempotent
Input schema
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['formula', 'inputs'], 'properties': {'inputs': {'type': 'object', 'description': 'Inputs keyed by name; see canon_describe_formula', 'propertyNames': {'type': 'string'}, 'additionalProperties': {}}, 'formula': {'enum': ['options.bsm.price', 'options.bsm.greeks', 'options.implied_vol', 'options.put_call_parity', 'options.vertical_spread', 'options.kelly', 'options.expected_move', 'bonds.price', 'bonds.ytm', 'bonds.risk', 'hf.sharpe', 'hf.sortino', 'hf.max_drawdown', 'hf.fee_net', 'quant.annualize', 'quant.var_parametric', 'pe.irr', 'pe.multiples', 'vc.round', 'ma.accretion_dilution', 'ma.lbo_returns', 'credit.all_in_yield', 'credit.coverage', 'cal.is_trading_day', 'cal.holidays', 'cal.trading_days_between', 'cal.add_trading_days', 'cal.settlement', 'cal.next_expiration', 'cal.year_fraction'], 'type': 'string'}}}
canon_contract
Prediction-market contract, normalised
Fetch one Kalshi (ticker) or Polymarket (slug or condition id) contract and return rules text, close time, resolution source and status in one shape. For a paid cross-venue identity check with a snapshot receipt, call GET /v1/contracts/compare over REST.
Read only
Open world
Input schema
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['venue', 'id'], 'properties': {'id': {'type': 'string', 'maxLength': 200, 'minLength': 1}, 'venue': {'enum': ['kalshi', 'polymarket'], 'type': 'string'}}}
canon_describe_formula
Describe a formula
Input schema with ranges and defaults, output names, stated convention, citations and test vectors for one formula.
Read only
Input schema
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['formula'], 'properties': {'formula': {'enum': ['options.bsm.price', 'options.bsm.greeks', 'options.implied_vol', 'options.put_call_parity', 'options.vertical_spread', 'options.kelly', 'options.expected_move', 'bonds.price', 'bonds.ytm', 'bonds.risk', 'hf.sharpe', 'hf.sortino', 'hf.max_drawdown', 'hf.fee_net', 'quant.annualize', 'quant.var_parametric', 'pe.irr', 'pe.multiples', 'vc.round', 'ma.accretion_dilution', 'ma.lbo_returns', 'credit.all_in_yield', 'credit.coverage', 'cal.is_trading_day', 'cal.holidays', 'cal.trading_days_between', 'cal.add_trading_days', 'cal.settlement', 'cal.next_expiration', 'cal.year_fraction'], 'type': 'string'}}}
canon_entity
Resolve a US issuer
Map a ticker (AAPL, BRK.B), a CIK, or a company name to one issuer id with every ticker and exchange, plus EDGAR filing locations. Use before joining prices, filings and news so identifiers line up; source is the SEC public ticker file.
Read only
Open world
Input schema
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['q'], 'properties': {'q': {'type': 'string', 'maxLength': 200, 'minLength': 1}, 'limit': {'type': 'integer', 'maximum': 50, 'minimum': 1}}}
canon_get_entry
Get one canon entry
Full definition and notes for one entry, by site and id (ids come from canon_search).
Read only
Open world
Input schema
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['site', 'id'], 'properties': {'id': {'type': 'string', 'maxLength': 200, 'minLength': 1, 'description': 'Entry id or slug, e.g. "modified-duration"'}, 'site': {'enum': ['wallstreet.wiki', 'hedgefund.wiki', 'options.wiki', 'fixed-income.wiki', 'quants.wiki', 'pe-finance.wiki', 'm-a.wiki', 'privatecredit.wiki', 'venture-capital.wiki'], 'type': 'string'}}}
canon_list_formulas
List formulas
The deterministic formula registry: id, site, summary, input names and citations. Call canon_describe_formula for a schema.
Read only
Input schema
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'properties': {}}
canon_search
Search the canon
Search defined terms and reference tables across all canon sites (options, fixed income, quants, PE, M&A, private credit, venture, hedge funds). Returns ranked hits with a citable url and the JSON source.
Read only
Open world
Input schema
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['q'], 'properties': {'q': {'type': 'string', 'maxLength': 200, 'minLength': 1, 'description': 'Search phrase, e.g. "modified duration" or "option pool shuffle"'}, 'site': {'enum': ['wallstreet.wiki', 'hedgefund.wiki', 'options.wiki', 'fixed-income.wiki', 'quants.wiki', 'pe-finance.wiki', 'm-a.wiki', 'privatecredit.wiki', 'venture-capital.wiki'], 'type': 'string', 'description': 'Restrict to one site'}, 'limit': {'type': 'integer', 'default': 10, 'maximum': 50, 'minimum': 1}}}
canon_sites
List canon sites
The sites in the .wiki finance canon with live entry counts and review dates.
Read only
Open world
Input schema
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'properties': {}}
canon_thresholds
Regulatory thresholds
Reference table of the regulatory figures agents get wrong: 13F, 13D and 13G, Form 4, Form PF tiers, adviser registration, 3(c)(1) and 3(c)(7), accredited investor, qualified client, Form D, CFTC 4.13(a)(3), ERISA 25 percent, AIFMD, HSR, Reg T. Each row carries the rule, authority, effective date, primary source and a confidence label. Filter by words or authority.
Read only
Input schema
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'properties': {'q': {'type': 'string', 'maxLength': 200}, 'authority': {'type': 'string', 'maxLength': 40}}}
canon_verify
Verify a receipt
Recompute a receipt from its inputs and confirm its id and outputs. Use it to check a number another agent or document claims came from this service.
Read only
Idempotent
Input schema
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['receipt'], 'properties': {'receipt': {'type': 'object', 'description': 'The receipt object returned by canon_compute', 'propertyNames': {'type': 'string'}, 'additionalProperties': {}}}}
History
Recent tool changes
Added
canon_cite
Sept. 17, 2026, 12:55 p.m.
Added
canon_contract
Sept. 17, 2026, 12:55 p.m.
Added
canon_thresholds
Sept. 17, 2026, 12:55 p.m.
Added
canon_entity
Sept. 17, 2026, 12:55 p.m.
Added
canon_batch
Sept. 17, 2026, 12:55 p.m.
Added
canon_verify
Sept. 17, 2026, 12:55 p.m.
Added
canon_compute
Sept. 17, 2026, 12:55 p.m.
Added
canon_describe_formula
Sept. 17, 2026, 12:55 p.m.
Added
canon_list_formulas
Sept. 17, 2026, 12:55 p.m.
Added
canon_changes
Sept. 17, 2026, 12:55 p.m.
Added
canon_get_entry
Sept. 17, 2026, 12:55 p.m.
Added
canon_search
Sept. 17, 2026, 12:55 p.m.
Added
canon_sites
Sept. 17, 2026, 12:55 p.m.
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