¶1 This appeal follows a successful suit for contribution by one guarantor, Keith G. and Julie B. Carpenter, against another, Larry D. and Kathleen L. Johnson, on an agreement to guarantee a construction bond (a guaranteed indemnity agreement). Both had signed a guaranteed indemnity agreement by which they agreed to indemnify a bonding company, Hartford Fire Insurance Company, for any payments that company made pursuant to the bond. The problem is the trial court required contribution based on an indemnity agreement (June 8, 1999 agreement) that had been used to secure bonding to bid a discrete project (Manchester Project). But the Carpenters paid the Hartford based on another indemnity agreement (May 20, 1999 agreement) that had been used to secure bonding for a totally separate project (McCormick & Baxter Project). The Johnsons had no interest in the McCormick & Baxter Project and had not signed the guaranteed indemnity agreement to secure the bond for that project. We conclude, then, that the Carpenters had no claim in equity for contribution against the Johnsons under either agreement, and we reverse the trial court’s judgment awarding contribution.
FACTS
¶2 Remtech Inc. and its owners, Keith and Julie Carpenter, signed a general indemnity agreement on May 20,1999, to secure the bonding necessary to bid on a project in the state of Oregon called the McCormick & Baxter Project. The indemnity agreement requires payment to the bonding *622company, Hartford Fire Insurance Company, in the event Hartford had to pay out of its construction bond. Larry and Kathleen Johnson and their company, Dustcoating Inc., did not sign the general indemnity agreement, the May 20, 1999 agreement used to secure bonding for the McCormick & Baxter Project, and had no interest in that project, financial or otherwise.
¶3 Dustcoating and the Johnsons did, however, sign a separate general indemnity agreement on June 8, 1999, to help Remtech and the Carpenters secure the necessary bonding to bid on a Corps of Engineers project known as the Manchester Project. The plan was that the Johnsons and Dustcoating would have significant subcontracts on the Manchester Project. The Manchester Project, however, was canceled. And so, of course, no claims were ever made against the Manchester Project bond or the June 8, 1999 general indemnity agreement.
¶4 Remtech failed to pay two subcontractors on the McCormick & Baxter Project, however, and Hartford stepped in and paid those obligations. Hartford then sued the Carpenters and Remtech in San Juan County Superior Court for the sums it paid out on its bond. Hartford’s complaint specifically alleged that the Carpenters and Remtech were obligated because of the May 20, 1999 general indemnity agreement. The Carpenters paid the full amount of Hartford’s claim. Hartford then signed a settlement agreement and dismissed its suit. The Carpenters’ settlement agreement with Hartford specifically referred to the McCormick & Baxter Project and to “a” general indemnity agreement. Neither Dustcoating nor the Johnsons were party to any of the San Juan County proceedings.
¶5 The Carpenters then sued the Johnsons and Dustcoating for contribution under the June 8, 1999 general indemnity agreement — the agreement used to secure bonding for the Manchester Project. They claimed that the unqualified language used in both agreements — “will indemnify . . . from all loss . . . because of having furnished any Bond” — obligated the Johnsons to contribute to the *623settlement of the claims against the bond for the McCormick & Baxter Project. Clerk’s Papers (CP) at 23, 62. The trial court agreed with the Carpenters that the categorical language used in these bonds gave rise to an equitable cause of action for contribution and required the Johnsons and Dustcoating to pay the Carpenters and Remtech a portion of its settlement with Hartford.
¶6 The Johnsons and Dustcoating appeal.
DISCUSSION
¶7 The Carpenters argue, on good authority, that contractual co-obligors have a right of contribution over and against one another when they are equally liable for the same debt. Sound Built Homes, Inc. v. Windermere Real Estate/S., Inc., 118 Wn. App. 617, 633-34, 72 P.3d 788 (2003). They are correct. But that contention begs the essential question in this dispute: are these parties equally liable on the same debt? And for us, they are not.
¶8 The essential facts here are undisputed. The question of whether the Carpenters are entitled to contribution is, therefore, a question of law that we will review de novo. Bank of Am., NA v. Prestance Corp., 160 Wn.2d 560, 564, 160 P.3d 17 (2007).
¶9 Two concepts structure our analysis here: the distinction between law and equity and the “context rule.” First, this is a suit in equity for contribution; it is not a suit in law on a contract. The distinction is important. A suit for contribution invokes the equitable powers of the court. Appleford v. Snake River Mining, Milling & Smelting Co., 122 Wash. 11, 15, 210 P. 26 (1922). A suit on a contract does not. Karnatz v. Murphy Pac. Corp., 8 Wn. App. 76, 81, 503 P.2d 1145 (1972).
¶10 Contribution, and specifically the right to contribution between coguarantors, then, is a right based only in equity. Appleford, 122 Wash, at 15. It is not a legal right, unless, of course, the parties here specifically agreed to contribution. They did not.
*624¶11 The right of contribution arises from the court’s willingness to imply an obligation to contribute. Id. The idea is that the guarantors “impliedly agreed that if there should be any liability each would contribute his just portion.” Id. Underlying this implied agreement is the assumption — an equitable assumption — that the instrument out of which the right to contribution should arise was paid or satisfied by one guarantor for the benefit of both guarantors. Id. So underlying this equitable right is the condition that the party against whom contribution is sought was obligated to pay the principal debt in the first place. Id.
112 The second concept that underlies our analysis is this state’s so-called “context rule.” Berg v. Hudesman, 115 Wn.2d 657, 667, 801 P.2d 222 (1990). That rule provides an analytical framework to interpret the language of these general indemnity agreements to determine the intent of these parties when they signed the agreement. Id. To do so, we view the contract as a whole. Id. We include “the subject matter and objective of the contract, all circumstances surrounding its formation, the subsequent acts and conduct of the parties, statements made by the parties in preliminary negotiations, and usage of trade and course of dealings.” Tjart v. Smith Barney, Inc., 107 Wn. App. 885, 895, 28 P.3d 823 (2001). This approach permits us to then “discover the intent of the parties based on their real meeting of the minds, as opposed to insufficient written expression of their intent.” Id. Neither general indemnity agreement here refers to a specific bond or project. We must look, then, to not only the indemnity agreements but also the conduct of the parties and the context of these agreements. Id.
¶13 We turn first, to the two separate general indemnity agreements because one or both of those agreements imposed, or did not impose, upon the Johnsons the obligation to pay Hartford in the first place. And it is that obligation that generates the Carpenters’ right to contribution. Apple-ford, 122 Wash. at 15.
*625¶14 It is undisputed that Hartford sued on a specific agreement (the May 20, 1999 general indemnity agreement). That agreement secured bonding for a specific project — the McCormick & Baxter Project. The Johnsons and Dustcoating did not sign and had no obligations under the May 20, 1999 general indemnity agreement, and they had nothing to do with the McCormick & Baxter Project. Indeed, even Hartford concluded that the agreements were project specific and refused to sue on the June 8, 1999 general indemnity agreement that the Johnsons had signed. CP at 13-14. And, so, we conclude that the Johnsons never incurred the obligation to pay Hartford here because Hartford never sued to recover on any agreement the Johnsons were parties to; nor, for that matter, did Hartford sue to recover moneys paid on any project the Johnsons had any interest in, financial or otherwise.
¶15 The Carpenters insist, nonetheless, that their settlement agreement with Hartford extinguished any and all potential liability under any general indemnity agreement. And this, they argue, supports their equitable claim for contribution. Of course, the trial court agreed with them. But even were we to accept that the settlement agreement could give rise to an equitable claim for contribution (and we do not), we would reject that argument here.
¶16 The San Juan County Superior Court pleadings are helpful in undermining the Carpenters’ argument. Hartford’s complaint made claims for recovery under the May 20,1999 general indemnity agreement and only that agreement. The complaint did not make claims under the June 8, 999 general indemnity agreement. The wording of the settlement agreement between Hartford and the Carpenters also undermines the Carpenters’ argument. The agreement specifically referred to the McCormick & Baxter Project. CP at 279-80. It specifically referred to the claims of Remtech’s subcontractors on that job. And it referred to the specific suit Hartford filed in San Juan County Superior Court, cause no. 07-2-05048-6, to recover under the May 20, 1999 general indemnity agreement. Finally, the settlement *626agreement refers only to “a” (as in a single) general indemnity agreement, not several. CP at 279-80.
¶17 That the ultimate settlement agreement between the Carpenters and Hartford may have eliminated any potential claims Hartford had against the Johnsons and Dustcoating simply does not bear upon the reality that Hartford had no claims against the Johnsons and Dust-coating under the May 20, 1999 general indemnity agreement in the first place. The Johnsons and Dustcoating did not sign that general indemnity agreement, received no financial benefit from it, and, in short, had nothing to do with it. And Hartford sued and collected under only the May 20, 1999 general indemnity agreement.
¶18 By way of supplemental authority, the Carpenters suggest that it is not material that the obligations were created by separate agreements at different times. Schoenfeld v. Neher, 428 F.2d 152 (10th Cir. 1970); Schoenfeld v. Neher, 453 F.2d 896 (10th Cir. 1972). That authority is easily distinguished. Those cases involved a cosurety obligation on the same indebtedness. Here, the indebtedness arose out of the McCormick & Baxter Project, which, again, the Johnsons and Dustcoating had nothing to do with. The context surrounding the two general indemnity agreements reflect obligations on separate jobs. And the equitable right of contribution does not support a finding of equal liability on obligations not contemplated by the parties.
¶19 The idea underlying the right to equitable contribution is the fairness inherent in equally bearing a common burden. Karnatz, 8 Wn. App. at 81. It is not fair for one who has paid in full a common obligation not to be able to collect half of that payment from someone who was equally obligated. Id. at 81-82. For us, those equitable principles are not implicated here.
¶20 In sum, the Carpenters were sued on, Hartford collected on, and the Carpenters paid on a different general indemnity agreement than the one on which they now base their equitable right to contribution. We conclude that this *627is not equitable and they are, therefore, not entitled to contribution in equity.
¶21 We reverse the trial court and dismiss the suit.
Brown, J., concurs.