11%yes · live odds
Do not citeUnder-measured: 1 of 6 pillarsMeasurement certainty Low
Odds via Polymarket public API. Verdict is an experimental market-quality diagnostic, not advice.
+5.0 pts 24h

Part of event: US-Canada diplomatic agreement to lower tariffs by...? · us-canada-diplomatic-agreement-to-lower-tariffs-by-august-31

Market structure and 24h change as reported by Polymarket's public API.

Top of book

Best bid

0.100

Best ask

0.110

Spread

9.5% of mid

1.00 pts

As reported by Polymarket's public API at 18:58 UTC; top of book, not full depth; per-side depth not shown. The spread is shown against the midpoint of the two quotes above, which is arithmetic on the venue's figures, not a figure the venue reports.

Volume

24h volume

$13,312

Total volume

$20,247

Volume as reported by Polymarket's public API.

Resolution rules

Rules as stated by Polymarket, reproduced verbatim. Convexly has not independently reviewed them and does not endorse them; the rating's resolution-reliability pillar treats rule text as present but not independently reviewed.

This market will resolve to “Yes” if a diplomatic agreement between the United States and Canada to lower US tariffs on Canada is announced by September 30, 2026, 11:59 PM ET. A diplomatic agreement to lower US tariffs on Canada refers to an official agreement, treaty, deal, or substantially similar diplomatic instrument that commits or obligates the United States to lower any tariffs on Canada, or includes the lowering of US tariffs on Canada as part of its stated terms. Any reduction, revocation, or suspension of US tariffs on Canada, or the canceled or suspended implementation of previously announced tariffs not yet effective, mutually announced as part of a diplomatic agreement, will qualify as lowering tariffs. All listed countries must announce their acceptance of the same qualifying diplomatic agreement. A joint announcement will qualify, as will separate announcements from each entity of its own acceptance of an agreement which, taken together, directly indicate that all the listed countries accepted the same agreement. Separate announcements of individual policies will not qualify if the policies are not announced as part of a diplomatic agreement. Each announcement must be a declarative statement that clearly and unambiguously communicates acceptance of an agreement. Statements that reference ongoing negotiations or a prospective agreement, or that allude to or express support for an agreement without confirming acceptance of the agreement, do not qualify. A qualifying announcement need not reference the agreement by name or use specific terminology, provided it clearly communicates acceptance of an agreement. Whether announcements from the listed countries represent a diplomatic agreement and whether such an agreement qualifies will be primarily determined through the announcements themselves. Where an announcement is made by all listed countries but, based on the announcements, it remains ambiguous whether the announcements represent a qualifying diplomatic agreement between the countries or whether the agreement qualifies, this market will remain open until either i) definitive confirmation that the announcements represent a qualifying diplomatic agreement between the listed entities is achieved through further announcements from the listed countries or a consensus of credible reporting or ii) 14 calendar days (ET) have passed after the date that the last country made their first potentially qualifying announcement. If this period would extend past the end date, this market will remain open to allow for 14 full calendar days to pass. If, at the end of the fourteenth calendar day, no definitive confirmation has been achieved, the announcements will be adjudicated based on the totality of information available from the resolution sources at that time. No single statement, denial, or presentation of evidence will govern where it is contradicted by the totality of information. The resolution sources for this market will be official information from the governments of the United States and Canada and a consensus of credible reporting.Show the full rules text

This market will resolve to “Yes” if a diplomatic agreement between the United States and Canada to lower US tariffs on Canada is announced by September 30, 2026, 11:59 PM ET. A diplomatic agreement to lower US tariffs on Canada refers to an official agreement, treaty, deal, or substantially similar diplomatic instrument that commits or obligates the United States to lower any tariffs on Canada, or includes the lowering of US tariffs on Canada as part of its stated terms. Any reduction, revocation, or suspension of US tariffs on Canada, or the canceled or suspended implementation of previously announced tariffs not yet effective, mutually announced as part of a diplomatic agreement, will qualify as lowering tariffs. All listed countries must announce their acceptance of the same qualifying diplomatic agreement. A joint announcement will qualify, as will separate announcements from each entity of its own acceptance of an agreement which, taken together, directly indicate that all the listed countries accepted the same agreement. Separate announcements of individual policies will not qualify if the policies are not announced as part of a diplomatic agreement. Each announcement must be a declarative statement that clearly and unambiguously communicates acceptance of an agreement. Statements that reference ongoing negotiations or a prospective agreement, or that allude to or express support for an agreement without confirming acceptance of the agreement, do not qualify. A qualifying announcement need not reference the agreement by name or use specific terminology, provided it clearly communicates acceptance of an agreement. Whether announcements from the listed countries represent a diplomatic agreement and whether such an agreement qualifies will be primarily determined through the announcements themselves. Where an announcement is made by all listed countries but, based on the announcements, it remains ambiguous whether the announcements represent a qualifying diplomatic agreement between the countries or whether the agreement qualifies, this market will remain open until either i) definitive confirmation that the announcements represent a qualifying diplomatic agreement between the listed entities is achieved through further announcements from the listed countries or a consensus of credible reporting or ii) 14 calendar days (ET) have passed after the date that the last country made their first potentially qualifying announcement. If this period would extend past the end date, this market will remain open to allow for 14 full calendar days to pass. If, at the end of the fourteenth calendar day, no definitive confirmation has been achieved, the announcements will be adjudicated based on the totality of information available from the resolution sources at that time. No single statement, denial, or presentation of evidence will govern where it is contradicted by the totality of information. The resolution sources for this market will be official information from the governments of the United States and Canada and a consensus of credible reporting.

Resolution mechanics

Resolution parameters as stated by Polymarket.

Resolved by (UMA adapter)
0x65070BE91477460D8A7AeEb94ef92fe056C2f2A7
Proposer bond
$500 proposer bond
Proposer reward
$5 proposer reward

Market Trust diagnostic · v0.2 candidate

US-Canada diplomatic agreement to lower tariffs by September 30?

This market is not in the v0.1 daily card set yet. The v0.2 diagnostic scorecard below shows the per-pillar contribution from the latest materializer run, with visible caveats and evidence-status separation.

Why this rating

Why this rating

Composite 48 · Do not cite

Measurement certainty

Low

1 measured · 3 modeled · 2 not assessed

Certainty reflects how much of this market we measured, not how good the market is.

  • CoherenceModeled estimatefixed rules, not a per-market measurementweight 25.0

    No full-provenance CME signal is linked to this condition in the current ledger window; absence of a signal is not proof of coherence.

    • · no linked cme signal in window
    • · absence of signal not proof of coherence
    • · CME signal window: 7 days
    • · recent full provenance signals: 19
    50+17.9
  • ExecutabilityModeled estimatefixed rules, not a per-market measurementweight 20.0

    Executability scored as worse-of(spread, depth) from a single orderbook snapshot; the two were merged from the former liquidity + depth pillars to stop double-counting one correlated source.

    • · executability takes the worse of spread and depth
    • · spread: top-of-book spread 1.0c
    • · spread: spread is 1% of mid, tight relative to price
    • · spread: depth approximated from a probability-point band and split evenly per side; a per-side breakdown is not yet available
    15+4.3
  • Resolution reliabilityModeled estimatefixed rules, not a per-market measurementweight 20.0

    Resolution source and rule text are present but not independently reviewed.

    • · resolution metadata present manual review pending
    70+20.0
  • Participant flowNot assessednot yet measured for this marketweight 20.0

    No participant flow rollup materialized yet.

    • · participant flow pending
    not assessed
  • Integrity-risk screenNot assessednot yet measured for this marketweight 10.0

    No participant concentration rollup materialized yet.

    • · missing input
    not assessed
  • Audit completenessMeasuredweight 5.0

    3 linked artifacts; 1 missing hashes; 0 stale/failing sources.

    • · artifact hash missing
    • · source watermarks healthy
    85+6.1

How it adds up: composite = Σ(score × weight) / Σ(weight) across measured + heuristic pillars only. Pending and data-rights-blocked pillars are excluded from both numerator and denominator. Total contributing weight = 70.0 of 100.0; the remaining 30.0 is unmeasured.

Caveat: 2 pillars not assessed yet; the score will recompute as the substrate fills in.

Structural coherence read

The Coherent Markets Engine checks this market's pricing for structural inconsistencies against related markets. Whether a current signal exists, and its construction, is included with Researcher.

See Researcher

Market opened 2026-08-26 · minimum order size 5 shares · price tick size 0.010 · as stated by Polymarket.