  chemSKI with tokens is a confluent graph rewrite system where all rewrites
are local, which moreover can be used to do SKI calculus reductions. The graph
rewrites of chemSKI are made conservative by the use of tokens. We thus achieve
several goals: conservative rewrites in a chemical style, a solution to the
problem of new edge names in a distributed, decentralized graphical reduction
and a new estimation of the cost of a combinatory calculus computation. This
formalism can be used either as an artificial chemistry or as a model of a
virtual decentralized machine which performs only local reductions. A programs
repository and the same article with simulations are available at github at
https://mbuliga.github.io/chemski/chemski-with-tokens.html
